Geologic Names of 

North America 

Introduced in 

19364955

^GEOLOGICAL SURVEY BULLETIN 1056-A

Names of 

North America 

Introduced in 

1936-1955

By DRUID WILSON, WILLIAM J. SANDO? and RUDOLPH W. KOPF

Prepared with the assistance of BARBARA BEDETTE, JEAN L. EGGLETON, GRACE C. KEROHER, CAROLYN 

MANN, WILLIAM G. MELTON, JR., KATHERINE DENNISON PALMER, and JACK E. SMEDLEY

GEOLOGIC NAMES OF NORTH AMERICA

-G E O L O G I C AL SURVEY BULLETIN 1056-A

A compilation of new geologic names of 

North America, including Greenland, 

the finest Indies, the Pacific Island possessions of the United States, and the 

Trust Territory of the Pacific Islands

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1957
UNITED STATES DEPARTMENT OF THE INTERIOR 

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan, Director

'

For sale by the Superintendent of Documents, U. S. Government Printing Office 

Washington 25, D. C. - Price $1. (paper cover)
FOEEWOBD

The "Lexicon of geologic names of the United States" by M. Grace 

Wilmarth, published in 1938 and reprinted in 1951 and 1957, met a 

long standing need and continuing demand for a compilation of 

geologic names. Plans made for future compilations as new names 

and revisions appeared were interrupted during the years of World 

War II. In 1952 a sustained effort was begun toward review of geologic publications necessary to furnish a background for preparation 

of a new edition. After the review was brought up to date in 1956, 

the present compilation was prepared in order to furnish to the geologic profession, as quickly as possible, some of the essential data 

concerning the new names that have appeared since 1935. This compilation is the first step in the preparation of a revision of the lexicon.

The geologic names currently adopted for use by the U. S. Geological Survey are indicated in boldface type, as in Wilmarth's lexicon. The names so indicated have been used by Survey geologists 

in reports on areas in which they have made investigations; they 

constitute a part of the official nomenclature of the Survey and thus 

apply only to its members.

W. H. BEADLEY

Chief Geologist

ni

CONTENTS

Page 

Foreword.________________________________________________________ iii

Introduction._____________________________________________________ 1

Acknowledgments _________________________________________________ 4

Symbols _________________________________________________________ 4

Geologic names.___________________________________________________ 5

GEOLOGIC NAMES OF NORTH AMERICA

GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED

IN 1936-1955

By DRUID WILSON, WILLIAM J. SANDO, and BTTDOLPH W. KOPF

Prepared with the assistance of BABBAEA BEDETTE, JEAN L. EGGLETON, GBACE C. 

KEEOHEB, CABOLYN MANN, WHJJAM G. MEI/TON, JR., KATHEBINE DENNISON 

PAT.MEB, and JACK E. SMEDLEY

INTRODUCTION

The "Lexicon of geologic names of the United States (including 

Alaska)" by M. Grace Wilmarth was published as U. S. Geological 

Survey Bulletin 896 in 1938 and reprinted in 1951 and 1957. It has 

had wide circulation and use. The present work, listing the new 

names published in the period 1936-1955 and a few earlier names not 

included in Wilmarth's lexicon, is the initial result of a project begun 

in 1952 to continue for publication the compilation of new names and 

revisions of old names. More than 5,000 new names have appeared 

since publication of Wilmarth's lexicon. In order to publish a compilation of these names as quickly as possible, they were prepared in 

the present brief form, which, it is planned, will be superseded by a 

publication with more detailed information.

A majority of geologic names are formally proposed and defined in 

their initial publication; some, however, appear as formal names 

without being defined; and a few that are undefined and sometimes 

obscure seem to have potential value as formal names. If the initial 

reference is not sufficient to establish a name, a supplemental reference, 

when available, is added. For a few names of obscure usage, the reference or references cited indicate the known information, or lack of it.

The names of rock units of formal or seemingly formal usage derived from names of geographic localities or features are listed. Time 

terms and subsurface units are included if they have been defined or 

distinguished as a part of formal stratigraphy. Some names currently 

in use for rock units in Jamaica, British West Indies, that are based 

on f aunal or descriptive terms are also included.

Not all of the formally proposed names in Pleistocene glacial geology are entered; but the names of stages and substages, used in glacial
2 GEOLOGIC NAMES OF NORTH AMERICA

chronology, and the names of local deposits of till, silt, drift, and 

gravel, defined as rock units, are included. The names applied to 

moraines, eskers, terraces, and boulder trains for which physiography 

is an essential part of the definition are excluded, as well as the names 

of hypothetical glaciers, lakes, and rivers and stages of these features. 

The names of igneous bodies, such as batholiths, stocks, and sills, are 

omitted, but the rock units composing the bodies are entered if they 

are named. The names of units used in economic geology, such as 

coal beds, oil and gas sands, pegmatites, and mining terms, are omitted, 

inasmuch as they are not considered a part of formal stratigraphy 

and are, for the most part, of only local interest. The publications 

listed below contain useful information on the economic names in 

some local and particular areas.

L. E. Workman, chm., 1954, Lexicon of geologic names in Alberta and adjacent portions of British Columbia and Northwest Territories: Calgary, 

Alberta, Alberta Soc. Petroleum Geologists; supplement, 1955. (No pagination).

Louise Jordan, (in preparation), Subsurface stratigraphic names of Oklahoma : Okla. Geol. Survey.

O. P. Jenkins, 1943, Glossary of the geologic units of California: Calif. Dept. 

Nat. Res., Div. Mines Bull. 118, pt. 4, p. 673-687.

C. W. Jennings and E. W. Hart, 1956, Exploratory wells drilled outside of oil 

and gas fields in California to December 31, 1953: Calif. Dept. Nat. Res., 

Div. Mines Special Rept. 45, p. 5-8 (glossary).

H. R. Wanless, 1939, Pennsylvanian correlations in the eastern interior and 

Appalachian coal fields: Geol. Soc. America Special Paper 17, p. 74-112 

(glossary).

H. R. Wanless, 1946, Pennsylvanian geology of a part of the southern Appalachian coal field: Geol. Soc. America Mem. 13, p. 135-155 (glossary).

Anonymous, 1954, Names of Oklahoma coal beds: Hopper, v. 14, no. 8, p. 

121-134.

Some units are listed as cyclothems in order to avoid entering several contiguous units with the same geographic name. The first appearance of a name of a cyclothem as the name of one of its components, such as a clay, limestone, sandstone, or shale, is credited as the 

introduction of the name. Thus, the first reference under a cyclothem may refer to one of its components. Original appearance as 

the name of a coal bed has been disregarded inasmuch as the names 

of coal beds are economic terms and are not commonly considered a 

part of formal geologic nomenclature.

Ages of the units are given in terms of the standard major divisions 

of geologic time, as used by the U. S. Geological Survey. These generally are the terms of the authors cited. The parenthetic position is 

reserved for the minor age or rank designations or, in a few instances, 

the distinctive age terms of the authors. For the sake of consistency,
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 6

the designation early or late, where used by the authors with the age 

of rock units, is changed to lower or upper.

The politico-geographic area covered includes the continent of 

North America and its adjacent islands, Greenland, Trinidad and 

other islands off the coast of South America that are politically a part 

of the West Indies, all of the possessions of the United States, and the 

Trust Territory of the Pacific Islands presently administered by the 

United States. The areas of the units are based primarily on the 

major political divisions, but names of the various states and territories are the only designations given for the United States, its 

possessions, and trust territories. The initial area for each unit contains, or is assumed to contain, the type locality.

Published variations of geologic names that are due to variations of 

the geographic part of the name are given cross references. The 

lithic and rank designations of units first described in foreignlanguage literature are translated, but the names are not anglicized; 

cross references are given, however, for later anglicizations. Various 

transliterations of many of the names of units described from the 

Trust Territory of the Pacific Islands have appeared in English, in 

the Romaji of Japanese publications, and in English translations of 

the Japanese. The published and unpublished recommendations of 

the Board on Geographic Names on the native place names from 

which the geologic names are derived have been followed, but there 

were no decisions on some of obscure origin. Cross references are 

given if the recommended forms and the published sources differ and 

if the transliterations are inconsistent.

Within the United States, its possessions, and trust territories, certain names have been adopted and others abandoned for use by the 

U. S. Geological Survey. The data for these names are given as the 

Survey currently defines them. Discrepancies between the data given 

and data in the references cited are due to subsequent published or unpublished work of Survey geologists. Decisions of the Survey to 

adopt or abandon names are based upon the work of its geologists 

during their tenure with the Survey. Therefore, recognition and 

adoption of names by the U. S. Geological Survey is dependent upon 

the work of Survey geologists in an area, the time at which the work 

was done, and the type of investigation made. Names adopted for 

use by the U. S. Geological Survey are printed in bold face type. 

Names abandoned for use by the Survey are preceded by a dagger (f).

Receipt of information on additional new geologic names, published in the period 1936-55, but not included in this compilation, 

would be appreciated by the staff of the lexicon project and would 

contribute to the completeness of future publications.
4 GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955

ACKNOWLEDGMENTS

The cooperation of George V. Cohee, chairman, and the staff of the 

Geologic Names Committee of the U. S. Geological Survey, in all 

stages of the preparation of this compilation, is gratefully acknowledged. For the unfailing fulfillment of numerous requests, appreciation is expressed to William H. Heers, librarian, and the staff of the 

library of the Survey, and to Ruth Reece King and the staff of the 

Bibliography of North American Geology. To Wendell P. Woodring 

appreciation is expressed for advice on some of the problems concerning the geologic names in the West Indies and Central America.

Thanks are extended to Alice S. Alien, Nell L. Bowen, and Helen 

V. Nicol for their early contributions to the background material of 

the compilation. Particular acknowledgment is made to Ruth A. M. 

Schmidt, to whom the organization of the project in its present form is 

largely due. Grateful acknowledgment is made to Blanche E. Hansen 

for her distinct contribution to the accuracy and consistency of the 

compilation and for the excellence of the typescript.

SYMBOLS

Names printed in boldface type have been adopted for use by the 

U. S. Geological Survey.

Names preceded by a dagger (f) have been abandoned for use by 

the Survey.

Names in roman type without a dagger are those that the Survey 

has had no occasion to consider for use.

Data within brackets have been derived from sources other than 

the references cited.
GEOLOGIC NAMES

Abbotsford gravel

Pleistocene: British Columbia, Canada.

J. B. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 11.

Abingdon cyclothem

Pennsylvanian: Illinois and Iowa.

J. M. Weller and H. R. Waiuess in J. M. Weller and others, 1942, Am. Assoc. Petroleum 

Geologists Bull., v. 26, no. 10, p. 1586 (fig. 1), 1589.

Abiquiu tuff

Miocene: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103; 1938, Jour. 

Geology, v. 46, no. 7, p. 944-952, 958.

Absalona formation

Precambrian(?) : Rhode Island.

G. M. Richmond in G. M. Richmond and W. B. Alien, 1951, R. I. Port and Indus. Devel. 

Comm. Geol. Bull. 4, p. 10,11-12.

Absaroka sequence

Mississippian (Chesterian) to Pennsylvanian (Des Moinesian) : Central and 

western United States.

L. L. Sloss, W. C. Krurnbein, and E. C. Dapples in C. R. Longwell, chm., 1949, Geol. 

Soc. America Mem. 39, p. 110-111, 121.

Absher limestone

Pennsylvanian: Illinois.

J. M. Weller, L. G. Henbest, and C. O. Dunbar in C. O. Dunbar and L. G. Henbest, 

1942, 111. State Geol. Survey Bull. 67, p. 17, 23 [1943].

Abuillot formation

Eocene, lower: Dominican Republic.

W. M. Small, 1948, Seismol. Soc. America Bull., v. 38, no. 1, p. 24.

P. J. Bermudez, 1949. Cushman Lab. Foram. Research Special Pub. 25, p. 19.

Abymes tuffs

Miocene: Guadeloupe (Grande Terre), French West Indies.

Louis Barrabe", 1934 [France] Office national des combustibles liquides Annales,

9« anne*e, no. 4, p. 634, 636, 659. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581.

Acalapa conglomerate

Pliocene: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart.

Acatlan schists

Pre-Mesozoic: Oaxaca, Mexico.

G. P. Salas, 1949, Asociaci6n Mexicana Gefilogos Petroleros Bol., v. 1, no. 2, p. 92-97,

5
6 GEOLOGIC NAMES OF NORTH AMERICA

Ackley granite

Post-Silurian: Newfoundland, Canada.

B. L. Smith, 1953, Newfoundland Geol. Survey Kept. 2, p. 9-10.

Acme porphyry

Precambrian (Algoman) : Ontario, Canada.

G. D. Furse, 1948, in Structural geology of Canadian ore deposits: Canadian Inst. 

Mining and Metallurgy, p. 487.

Active formation

Ordovician: British Columbia, Canada.

H. W. Little, 1950, Canada Geol. Survey Paper 50-19, p. 21-23.

Ada limestone

[Ordovician]: Oklahoma.

W. H. Shideler, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 367-368.

Adel Mountain volcanics

Upper Cretaceous: Montana.

J. B. Lyons, 1944, Geol. Soc. America Bull., v. 55, no. 4, p. 449, 452.

Adelina marl

Oligocene: Cuba.

D. K. Palmer and P J. Bermudez, 1936, Soc. Cubana Historia Nat. Mem., v. 10, no. 4, 

p. 233.

Adirondack-Border series

Upper Cambrian: New York.

R. R. Wheeler, 1946. Harvard Univ. Summaries of Theses, 1942, p. 143, 145.

Adler series

See Alder group.

Adobe formation

Pennsylvanian (Missouri series) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 61-62.

Aeolian Buttes till

Pleistocene: California.

W. C. Putnain, 1949, Geol. Soc. America Bull., v. 60, no. 8, p. 1289.

Afono trachyte

Pliocene or Pleistocene, lower: Samoa Islands (Tutuila).

R. A Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 108, 129-130.

Afton bed

Middle Devonian: Michigan.

IG. M. Ehlers], 1938, Mich. Acad. Sci. Arts and Letters Sec. Geology and Mineralogy

[Guidebook] 8th Ann. Field Excursion, [fig. 2] after p. 8. 

W. A. Kelly, 1940, Mich Acad. Sci. Arts and Letters Sec. Geology and Mineralogy

[Guidebook] 10th Ann. Field Excursion, [p. 1, figs. 3, 4, 6, 7], maps 1, 2.

Afton limestone member (of Wellington formation) 

Permian: Kansas. 

W. A. Ver Wiebe, 1937, Wichita Municipal Univ. Bull., v. 12, no. 5, p. 10-11.

Agamok sediments

Precambrian (Knife Lake) : Minnesota.

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583,1615.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 7

Agattu beds

Cretaceous or Tertiary: Alaska (Aleutian Islands).

R. P. Sharp, 1945, (abs.) Geol. Soc. American Bull., v. 56, no. 12, pt. 2, p. 1197; 

1946, Jour. Geology, v. 54, no. 3, p. 193-197.

Agency shale member (of Pierre formation) 

[Upper Cretaceous]: South Dakota. 

W. L. Russell, 1930, S. Dak. Geol. Nat. History Survey Kept. Inv. 7, p. 5.

Agnostus Cove formation

Upper Cambrian (Johannian) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 76-77.

Agpat formation

Precambrian: West Greenland.

H. K. B. Krueger, 1928, Meddel. om Gr0nland, bind 74, nr. 8, p. 119-125, pi. 8.

Agua Caliente gabbro

Precambrian (Keweenawan?) : New Mexico. 

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 11, 25.

Aguada formation

Miocene, lower: Puerto Rico.

A. D. Zapp, H. R. Bergquist, and C. R. Thomas, 1948, U. S. Geol. Survey Oil and Gas 

Inv. Prelim. Map 85, sheets, 1, 2.

Aguadilla limestone

Miocene, lower: Puerto Rico.

C. J. Maury, 1919, Am. Jour. Sci., v. 48, no. 285, p. 214 (correlation chart) ; 1919, 

Science, v. 70, no. 1825, p. 609.

Agua Nueva formation

Upper Cretaceous: Vera Cruz, Mexico.

J. M. Muir, 1934, in Problems of Petroleum Geology : Am. Assoc. Petroleum Geologists, 

p. 377, 382-383.

Agua Verde shale member (of Fayette formation) 

Eocene (Jackson) : Texas.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, p. 259 

(fig. 2), 269-270.

Agua Zarca sandstone member (of Chinle formation) 

Upper Triassic: New Mexico.

G. H. Wood and S. A. Northrop, 1946, U. S. Geol. Survey Oil and Gas Inv. Preliin. 

Map 57.

Aguijan limestone

Pliocene: Mariana Islands (Aguijan).

Risaburo Tayama and Yasushi Ota, 1940, Geomorphology, geology, and coral reefs of 

Aguijan Island : Tropical Industry Inst, Palau, South Sea Islands, Bull. 6 [English 

translation in library of TJ. S. Geol. Survey, p. 16-17, 19].

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 55, table 4 [English translation in library of U. S. Geol. Survey, p. 66].

Aguja sandstone

Precambrian (Protozoic) : Arizona.

[C. R.] Keyes, 1939, Pan-Am. Geologist, v. 71, no. 1, p. 69.

Ahearn member (of Chadron formation) 

Oligocene, lower: South Dakota. 

John Clark, 1954, Carnegie Mus. Annals, v. 33, art. 11, p. 197-198.
8 GEOLOGIC NAMES OF NORTH AMERICA

Ahern quartzite

See Ahorn quartzite.

Ahorn quartzite

Precambrian (Belt series) : Montana.

C. E. Waldron and R. H. Earhart, 1942, Mont. Bur. Mines and Geology Mem. 21,

p. 243. 

Charles Deiss, 1943, Geol. Soc. America Bull., v. 54, no. 2, p. 213, 217-218.

Aikens Lake granite

Precambrian: Manitoba, Canada.

G. A. Russell, 1948, Manitoba Dept. Mines and Nat. Res. Prelim. Rept. 47-1, p. 6.

Aillik formation

Precambrian: Newfoundland (Labrador), Canada.

B. H. Kranck, 1939, Newfoundland Geol. Survey Bull. 19, p. 15.

Aillik Bay quartzite

See Aillik formation.

Aimeliik formation 

Aimiliiki agglomerate

See Aimiriiki (Aimiliiki) agglomerate.

Aimiriiki (Aimiliiki) agglomerate

Eocene: Caroline Islands (Babelthaup).

Risaburo Tayama and Misaburo Shimakura, 1937, On the coal of Babelthaup Island,

Palau group: Geol. Soc. Japan Jour., v. 44, no 6, p. 526 [English translation in

library of U. S. Geol. Survey, p. 11. 

Risaburo Tayama, 1952. Coral reefs in the South Seas: Japan Hydrog. Office Bull.,

v. 11, p. 65, table 4 [English translation in library of U. S. Geol. Survey, p. 77].

Airai lignite bearing beds

Pliocene: Caroline Islands (Babelthaup).

Risaburo Tayama, 1939, Brief report on the geology and ore resources of Babelthaup 

Island (Palau Island proper) : Tropical Industry Inst., Palau, South Sea Islands, 

Bull. 3 [English translation in library of U. S. Geol. Survey, p. 6-7, 17] ; 1952 

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 66, table 4 

[English translation in library of U. S. Geol. Survey, p. 78-79].

Ajo volcanics

Tertiary, middle (?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 43-45.

Ajusco formation

Miocene: Mexico and Distrito Federal, Mexico.

R. M. Berbeyer, 1953, Congreso Cient. Mexicano Mem., tomo 4, table 6.

Akaitchoflow (in Yellowknife group)

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. E. G. Brown and A. S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans. 

v. 56, p. 70.

Aladdin sandstone

Middle Ordovician (Chazyan) : Wyoming and South Dakota.

M. R. McCoy, 1952, Billings Geol. Soc. Guidebook 3d Ann. Field Conf., p. 46-47.

Alajuela formation

See Alhajuela sandstone member.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 9

Alamo formation

Pliocene: California.

A. S. Huey, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 335.

Carlton Condit, 1938, Carnegie Inst. Washington Pub. 476, p. 224, 228.

Alamogordo member (of Lake Valley formation) 

Mississippian (Osage) : New Mexico.

L. R. Laudon and A. L. Bowsher, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, 

no. 12, p. 2114-2116, 2125-2133, figs. 5, 6.

Alava formation

Oligocene, lower: Cuba.

Jorge Brodermann, 1945, Soc. Cubana Ingenieros Rev., v. 42, no. 1, p. 144, 145, chart.

Albanel group

Precambrian: Quebec, Canada.

W. G. Wahl, 1947, Quebec Dept. Mines Prelim. Rept. 211, p. 7-8.

Albemarle group

Middle Silurian (Niagaran) : Ontario, Canada.

T. B. Bolton, 1953, Canada Geol. Survey Paper 53-23, p. 13-18.

Albert formation

Mississippian : New Brunswick, Canada.

H. T. Hind, 1865, A preliminary report on the geology of New Brunswick : Fredericton,

New Brunswick, G. E. Fenety, p. 85, 90. 

G. W. H. Norman, 1932, Canada- Geol. Survey Bcon. Geology Series, no. 9, p. 168-170.

Albertan system

Middle Cambrian: Western North America.

A. W. Grabau, 1921, A text book of geology, pt. 2, Historical geology : New York, D. C. 

Heath & Co., p. 243 (footnote) ; 1936, Paleozoic formations in the light of the 

pulsation theory, v. 1, Lower and Middle Cambrian pulsations : 2d ed., Peiping, 

China, Univ. Press, Natl. Univ. Peiping, p. 10, 160.

Alberts Lake granodiorite

Precambrian: Manitoba, Canada.

Jorina Kalliokoski, 1952, Canada Geol. Survey Mem. 270, p. 8.

Albion formation

Mississippian (Meramecian) : Oklahoma.

1954, Ardmore Geol. Soc. [Guidebook] Field Trip October, 1954, chart facing p. 1.

Albion glacial stage

Pleistocene (Wisconsin) : Colorado. 

R. L. Ives, 1950, Sci. Monthly, v. 71, no. 2, p. 114; 1953, Geog. Review, v. 43, no. 2,

Albion member (of Stellarton series)

Pennsylvanian: Nova Scotia, Canada.

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 32-34 [1941].

Albion monzonite

Cretaceous (?) : Colorado.

R. L. Ives, 1950. Sci. Monthly, v. 71, no. 2, p. 114; 1953, Geog. Review, v. 43, no. 2, 

p. 232 (fig. 3).

Albrechts Bay marl and limestone 

See Albrechtsbugt f acies.

Albrechtsbugt facies

Upper Cretaceous (Valanginian) : Northeast Greenland.

Andreas Vischer, 1943, Meddel. om Gr0nland, bind 133, nr. 1, p. 87-91, pi. 2.
10 GEOLOGIC NAMES OF NORTH AMERICA

Alder group

Precambrian: Arizona.

B. D. Wilson, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 112; 1939, Geol. 

Soc. America Bull., v. 50, no. 7, p. 1118, 1121-1122.

Alderinac syenite porphyry

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey 

Mem. 166, p. 112.

Alectryonaria limestones 

See Ostrea limestone.

Alectryonia limestone 

See Ostrea limestone.

Alegria formation

Oligocene (Refugian) : California.

T. W. Dibblee, Jr., 1950, Calif. Dept. Nat. Res., Div. Mines Bull. 150, p. 30-31.

Aleman formation

Upper Ordoviclan (Cincinnatian) : New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 60-62, 

fig. 4.

Aleuts member (of Kialagvik formation) 

Lower Jurassic: Alaska. 

L. B. Kellum, 1945, N. Y. Acad. Sci. Trans., ser. 2, v. 7, no. 8, p. 203, 205-206.

Alexandra formation

Upper Devonian: Northwest Territories (Mackenzie), Canada. 

C. H. Crickmay, 1953, New Spiriferidae from the Devonian of western Canada: 

Calgary, Canada, Imperial Oil Limited, p. 1, 11.

Alexo formation

Upper Devonian: Alberta, Canada.

R. deWit and D. J. McLaren, 1950, Canada Geol. Survey Paper 50-23, p. 6, 21.

Alferitz formation

Miocene, middle (Luisian) : California.

Martin Van Couvering and H. B. Alien, 1943, Calif. Dept. Nat. Res., Div. Mines 

Bull. 118, pt. 3, p. 496-500.

Alhajuela sandstone member (of Caimito formation) 

Miocene, lower: Panama Canal Zone. 

Charles Schuchert, 1935, Historical geology of the Antillean-Caribbean region: New

York, John Wiley and Sons, p. 586. 

W. P. Woodring and T. F. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull.,

v. 33, no. 2, p. 235-236.

Alhainbra formation

Eocene, upper: California.

C. B. Weaver, 1953, Wash. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 50-53.

Aliamanu basalt

Quaternary: Hawaiian Islands (Oahu) (subsurface). 

H. T. Stearns, 1940, Hawaii Div. Hydrography Bull. 5, p. 55.

Alisitos formation

Lower Cretaceous: Baja California, Mexico.

Manuel Santillan and Tomas Barrera, 1930, Inst. Ge'ologla Mexico Anales, tomo 5, 

p. 9-10.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 11

Alison quartzite

Precambrian: Quebec, Canada.

P. B. Auger, 1954, Canadian Mining and Metall. Bull., v. 47, no. 8, p. 530.

Allah quartzite

Paleozoic: Utah.

B. F. Strlngham, 1942, Geol. Soc. America Bull., v. 53, no. 2, p. 271, pi. 1.

Allamoore limestone or formation

Precambrian: Texas.

P. B. King, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 148-149.

Alien Bay formation

Silurian and Ordovician(?) : Northwest Territories (Cornwallis Island),

Canada. 

E. Thorsteinsson and Y. O. Fortier, 1954, Canada Geol. Survey Paper 53-24, p. 8-9.

Allenby formation

Oligocene: British Columbia, Canada.

W. S. Shaw, 1952, Canada Geol. Survey Paper 52-12, p. 7-9.

Aliens Falls fanglomerate

Precambrian (Algonkian) : New York.

P. D. Krynine, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt 2, p. 1333-1334.

Alien Valley shale

Upper Cretaceous: Utah.

B. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 122, 127-128.

Alley Creek beds

Oligocene: Trinidad, British West Indies.

E. J. L. Guppy, 1892, Geol. Soc. London Quart. Jour., v. 48, p. 532, 535. 

R. J. L. Guppy and W. H. Dall, 1896, U. S. Natl. Mus. Proc., v. 19, no. 1110, p. 304. 

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1444r-1445, 

1451 (chart).

Alma glacial substage

Pleistocene (Wisconsin) : Colorado.

Q. D. Singewald, 1950, U. S. Geol. Survey Bull. 955-D, p. 120 [1951].

Almenan sub-age

Pleistocene: Kansas, Nebraska, and Iowa.

J. C. Frye and A. B. Leonard, 1955, Am. Jour. Sci., v. 253, no. 6, p. 363.

Almongui agglomerate

See Arumonogui (Almongui) agglomerate. 

Almont sandstone (in Tongue River member of Fort Union formation)

Paleocene: North Dakota.

B. V. Hennen, 1943, Am. Assoc. Petroleum Geologists Bull., v. 27, no. 12, p. 1573 

(fig. 1), 1580.

Alofau volcanics

Pliocene (?) : Samoa Islands (Tutuila).

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1286, 1289-1290.

Alouette gravel

Recent: British Columbia, Canada.

J. E, Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply 

Paper 322, p. 11.

426779 57 2
12 GEOLOGIC NAMES OF NORTH AMEEICA

Alpefjord series (of Eleonore Bay formation) 

Precambrian: Northeast Greenland. 

Erdhart Frankl, 1951, Meddel, oin Gr0nland, bind 151, nr. 6, p. 6-14.

Alpine formation

Pleistocene and Recent: Utah.

K. C. Bullock, 1951, Utah Geol. Mineralog. Survey Bull. 41, p. 21.

C. B. Hunt, H. D. Varnes, and H. E. Thomas, 1953, U. S. Geol. Survey Prof. Paper 

257-A, p. 17-20.

Alta formation

Oligocene(?) : Nevada.

V. P. Gianella, 1936, Nev. Univ. Bull., v. 30, no. 9, p. 52-59.

Alta Loma sand

Pleistocene: Texas (subsurface).

N. A. Rose, 1943, Progress report on the ground-water resources of the Texas City 

area, Texas : Tex. Board of Water Engineers, p. 3-5.

Altar schists

Precambrian: Sonora, Mexico.

Charles Schucbert, 1935, Historical geology of the Antillean-Caribbean region: New

York, John Wiley and Sons, p. 138.

Manuel Maldonado-Koerdell, 1954, Asociacidn Mexicana Gedlogos Petroleros Bol., 

v. 6, nos. 3-4, p. 137.

Alumonogui agglomerate

See Arumonogui (Almongui) agglomerate.

Alum Rock rhyolite

Post-Cretaceous: California.

M. D. Crittenden, Jr., 1951, Calif. Dept. Nat. Res., Div. Mines Bull. 157, p. 47-48, 

pi. 3.

Alverson andesite lava 

Miocene: California. 

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 2, p. 22.

Alverson Canyon formation

Miocene, middle and upper: California.

L. A. Tarbet and W. H. Holman, 1944, (abs.) Am. Assoc. Petroleum Geologists Bull., 

v. 28, no. 12, p. 1781-1782.

Amabel formation

Middle Silurian (Niagaran) : Ontario, Canada.

T. E. Bolton, 1953, Canada Geol. Survey Paper 53-23, p. 15-17.

Amador group

Middle and Upper Jurassic: California.

W. D. Johnston, Jr., 1940, U. S. Geol. Survey Prof. Paper 194, p. 5.

N. L. Taliaferro, 1948, Calif. Dept. Nat. Res., Div. Mines Bull. 125, p. 282-284.

Amalia formation

Tertiary, middle or upper: New Mexico and Colorado.

P. F. McKinlay, [1955?], N. Mex. State Bur. Mines Min. Res. Bull. 42, p. 3« 18, 

pi. 1.

Amana beds

Devonian: Iowa.

S. W. Stookey, 1933, (abs.) Pan-Am. Geologist, v. 60, no. 1, p. 78. 

M. A. Stainbrook, 1945, Geol. Soc. America Mem. 14, p. 7-8.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 13

Amaranth formation

Jurassic or older: Manitoba and Saskatchewan, Canada.

O. A. Saeger and others, 1942, Am. Assoc. Petroleum Geologists Bull , v 26, no. 8

p. 1415, 1421. 

R. T. D. Wickenden, 1945, Canada Geol. Survey Mem. 239, p. 8.

Amargo formation

Jurassic: California.

H. S. Gale, 1946, Calif. Jour. Mines and Geology, v. 42, no. 4, p. 358

Amargosa chaos

Post-Miocene (?) : California.

L. F. Noble, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1936; 

1941, V. 52, no. 7, p. 963-965, 977-981.

Arnasa formation

Precambrian (middle Huronian) : Michigan.

Stephen Royce, 1936, Lake Superior Min. Inst. Proc. 29th Ann. Meeting, p. 78, 8], 

86, 97.

Amate (Lower and Upper) formation

Miocene: Tabasco and Chiapas, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart. 

G. P. Salas and Ernesto Lopez Ramos, 1951, Associaci6n Mexicana Ge61ogos Petroleros 

Bol., v. 3, nos. 1-2, p. 35-37.

Amawalk granite

Upper Ordovician( ?) : New York.

T. W. Fluhr, 1948, Rocks and Mineral Mag., v. 23, no. 8, p. 699.

Amco horizon (of Slave Point formation)

Middle Devonian: Northwest Territories (Mackenzie), Canada. 

Neil Campbell, 1950, Geol. Assoc. Canada Proc., v. 3, p. 90.

American Plat basalt 

Quaternary: Nevada. 

V. P. Gianella, 1936, Nev. Univ. Bull., v. 30, no. 9, p. 76-77, pi. 1.

American Lakes glacial substage

Pleistocene (Wisconsin) : Colorado.

D. F. Bschman, 1952, (abs.) Geol. Soc. America Bull., \. 63, no. 12, pt. 2, p. 1380; 

1955, Jour. Geology, v. 63, no. 3, p. 206-207.

American Ravine andesite porphyry

Miocene (?) : Nevada.

V. P. Gianella, 1934, Mining and Metallurgy, v. 15, no. 331, p. 299; 1936, Nev. 

Univ. Bull., v. 30, no. 9, p. 44-45, 50-52.

Arnicalola gneiss

Precambrian: Georgia.

A. S. Furcron and K. H. Teague, 1945, Ga. Geol. Survey Bull. 51, p. 31-34.

Amoeba Lake graywackes, slates, and tuffs 

Precambrian (Knife Lake) : Minnesota. 

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583, 1603-1605.

Amole arkose

Upper Cretaceous: Arizona.

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 716-720.
14 GEOLOGIC NAMES OF NORTH AMERICA

Amole granite

[Upper Cretaceous and/or Tertiary] (Laramide) : Arizona. 

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 721-722.

Amole latite

[Upper Cretaceous and/or Tertiary] (Laramide) : Arizona. 

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 725-726.

Amole quartz monzonite

[Upper Cretaceous and/or Tertiary] (Laramide) : Arizona. 

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 723-725.

Amoret limestone member (of Altamont formation)

Pennsylvanian (Desmoinesian) : Missouri, Iowa, and Kansas.

L. M. Cline and F. C. Greene in J. G. Grohskopf and Earl McCracken, 1949, Mo. Geol.

Survey and Water Res. Kept. Inv. 10, p. 17.

L. M. Cline and F. C. Greene, 1950, Mo. Geol. Survey and Water Res. Rept. Inv. 12, 

p. 18-21.

Amos Wash member (of Supai formation)

[Pennsylvanian and/or Permian]: Arizona.

R. L. Jackson, 1951, Plateau, v. 24, no. 2, p. 86-88.

Amoura shale

Oligocene or lower Miocene: Costa Rica.

P. P. Goudkoff and W. W. Porter, II, 1942, Am. Assoc. Petroleum Geologists Bull., 

v. 26, no. 10, p. 1650-1653.

Anahuac formation

Oligocene: Texas (subsurface).

J. B. Bby, 1943, Oil Weekly, v. Ill, no. 4, p. 22-23.

A. C. Ellisor, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 9, p. 1355-1368.

Anaktuvuk glaciation

Pleistocene (pre-Wisconsin) : Alaska.

R. L. Detterman in T. L. Pew6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 11, 

13 (table 1).

Anaverde formation

Pliocene, lower to middle: California.

O. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat Res.,

Div. Mines, sheet 4. 

R. E. Wallace, 1949, Geol. Soc. America Bull., v. 60, no. 4, p. 790-792.

Ancaster member (of Eramosa formation)

Middle Silurian (Niagaran) : Ontario, Canada.

E. W. Shaw, 1937, Royal Canadian Inst. Trans., v. 21, pt. 2, p. 339.

Ancell group

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 12.

Ancha formation

Pliocene, upper, or Pleistocene: New Mexico.

E. H. Baltz, Jr., and others, 1952, in N. Mex. Geol. Soc. Guidebook 3d Field Conf.,

p. 12, 15, 16. 

Brewster Baldwin and F. E. Kottlowski, 1955, N. Mex. State Bur. Mines Min. Res.

Scenic Trips to the Geol. Past, no. 1, p. 8, 21, 24.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN1936-1955 15

Ancon Hill rhyolite

Pre-Pliocene: Panama Canal Zone.

[T. F. Thompson], 1943, Panama Canal, Special Bng. Div., 3d Locks Proj., pt. 2, 

chap. 3, p. 25.

Andersons Cove slates

Ordovician: Newfoundland, Canada.

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92. 

B. L. Smith, 1953, Newfoundland Geol. Survey Kept. 2, p. 5-6.

Andrada formation

Pennsylvanian and Permian: Arizona.

R. B. Thurmond, W. B. Heinrichs, Jr., and E. .D. Spaulding, 1954, Mining Bng., v. 6,

no. 2, p. 198 (fig. 1). 

D. L. Bryant, 1955, Dissert. Abs., v. 15, no. 7, p. 1224.

Andrecito member (of Lake Valley formation) 

Mississippian (Osage) : New Mexico.

L. R. Laudon and A. L. Bowsher, 1949, Geol. Soc. America Bull., v. 60, no. 1, 

p. 12-13, fig. 4.

Andrew Bay volcanics

Tertiary: Alaska (Aleutian Islands).

R. R. Coats, 1947, U. S. Geol. Survey Alaskan Volcano Inv. Sept. 2, pt. 5, p. 78.

Androscoggin gneiss and schist 

Cambro-Ordovician(?) : Maine. 

L. W. Fisher, 1936, Am. Mineralogist, v. 21, no. 5, p. 323.

Aneth formation

Upper Devonian: Sursurface in Utah, Arizona, Colorado, and New Mexico. 

R. L. Knight and J. C. Cooper, 1955, Four Corners Geol. Soc. Guidebook [1st] Field 

Conf., p. 56, 57, 58.

Angaur (Older and Younger) limestone

Pleistocene and Recent: Caroline Islands (Angaur).

Risaburo Tayama, 1951, Tohoku Univ., Inst. Geology and Paleontology Short Papers 

no. 3, p. 105; 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 67, table 4 [English translation in library of U. S. Geol. Survey, p 801.

Angmagsalik granites

Lower Paleozoic (Caledonian?) : Southeast Greenland. 

L. R. Wager, 1934, Meddel. om Grpnland, bind 105, nr. 2, p. 20-21.

Angostura formation

Miocene, lower: Dominican Republic.

W. M. Small, 1948, Seismol. iSoc. America Bull., v. 38, no. 1, p. 26.

P. J. Bermudez, 1949, 'Cushman Lab. Foram. Research Special Pub. 25, p. 34.

Anguille series

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1937, Newfoundland Dept. Nat. Res. Inf. Circ. 3, 

p. 2, map; 1938, Newfoundland Geol. Survey Bul. 12, p. 9-11.

Anita shale

Eocene, middle: California.

F. R. Kelley, 1943, Am. Assoc. Petroleum Geologists Bull., v. 27, no. 1, p. 6-7.
16 GEOLOGIC NAMES OF NORTH AMERICA

Anna cyclothem (including Anna shale)

Pennsylvanian (Des Moines) : Kansas, Missouri, and Nebraska. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 316-317; 1945, 

Bull. 58, p. 30-31, 64.

Annelly gypsum member (of Wellington formation) 

Permian: Kansas.

W. A. Ver Wiebe, 1937, Wlchita Municipal Univ. Bull., v. 12, no. 5, p. 12.

i Anse Gascon formation

Middle Silurian: Quebec, Canada.

S. A. Northrop, 1939, Geol. Soc. America Special Paper 21, p. 29-32.

Anstruther granite gneiss

Precambrian: Ontario, Canada.

Jack Satterly and D. F. Hewitt, 1955, Ontario Dept. Mines Geol. Circ. 2, p. 4.

Antelope shale

Upper Cretaceous: California.

N. L. Taliaferro, 1954, in Northern Calif. Geol. Soc. [Guidebook] Spring Field Trip, 

[p. 6], correlation chart.

Antelope shale member (of Monterey formation) 

Miocene, upper: California.

B. B. Noble, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 7, p. 133,2 (fig. 1). 

R. R. Simonson and M. L. Krueger, 1942, Am. Assoc. Petroleum Geologists Bull., 

v. 26, no. 10, p. 1611 (flg. 2), 1617.

Antelope Flats member (of Wellington formation) 

Permian: Oklahoma. 

G. O. Raasch, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1928.

Antero formation

Oligocene: Colorado.

J. H. Johnson, 1937, (abs.) Colorado Univ. Studies, v. 25, no. 1, p. 77.

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 63-68.

Antes shale

Middle Ordovician (Mohawkian) : Pennsylvania.

G. M. Kay, 1944, Jour. Geology, v. 52, no. 1, p. 3 ; no. 2, p. 114.

Antes Gap shale 

See Antes shale.

Anthony cyclothem (including Anthony shale and sandstone) 

Pennsylvanian (Pottsville) : Ohio. 

R. E. Lamborn, C. R. Austin, and Downs Schaaf, 1938, Ohio Geol. Survey, ser. 4.

Bull. 39, p. 70-80. 

N. K. Flint, 1951, Ohio Geol. Survey, ser. 4, Bull. 48, p. 21-23.

Anthony sandstone

Permian: Oklahoma.

Henry Schweer in O. B. Brown, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, 

no. 12, p. 1553 (fig. 9).

Antler Peak limestone

Upper Pennsylvanian and Permian: Nevada.

R. J. Roberts, 1951, Geology of the Antler Peak quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 10].
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 17

Antropoceno periodo

Quaternary: Mexico.

A. R. V. Arellano, 1953, Congreso Cient. Mexicano Mem., tomo 3, p. 181, 186.

Antwerp type granite

Precambrian: New York.

A. F. Buddington, 1939, Geol. Soc. America Mem. 7, p. 135, 145, 160-161.

Anvil Points member (of Green River formation) 

Eocene, upper: Colorado.

J. W. Vanderwilt, 1947, Rocky Mtn. Assoc. Geologists Guidebook Field Conf., May 

14-16, p. 16-17.

Apache formation

Miocene, upper: California.

T. W. Dibblee, Jr., in Chester Stock, 1948, Southern Calif. Acad. Sci. Bull., v. 46, 

pt. 2, p. 84.

Aplington formation

Lower Mississippian: Iowa.

M. A. Stainbrook, 1950, Jour. Paleontology, v. 24, no. 3, p. 365-372.

Apodaca formation

Pennsylvanian (Derry) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Ees. Bull. 17, p. 27, 36.

Applegate group

Triassic(?) : Oregon.

F. W. Libbey and others, 1942, Oreg. Dept. Geology and Mineral Industries Bull. 17,

p. 21. 

F. G. Wells, P. B. Hotz, and F. W. Cater, Jr., 1949, Oreg. Dept. Geology and Mineral

Industries Bull. 40, p. 3-4.

Aptyehi limestone or formation 

Lower Cretaceous: Cuba.

M. G. Rutten, 1936, Geog. Geol. Meded. (Utrecht Univ.) Physiog.-Geol. Reeks, no. 11, 

p. 10-12.

Aquacatal porphyritic andesite 

Cretaceous(?): Honduras. 

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 29-30, pi. 1 (geol. map).

Aquaqua formation

Oligocene, upper, and Miocene, lower: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 132-133,134 (correlation chart).

Aquathuna limestone

Mississippi (Chesterian) : Newfoundland, Canada.

J. M. Weller and others, 1948, Geol. Soc. America Bull., v. 59, no. 2, Chart 5, col. 116.

Aqua Torres formation 

Permian: New Mexico.

J. T. Stark and E. C. Dapples, 1946, Geol. Soc. America Bull., v. 57, no. 12, pt. 1, 

p. 1154-1155, pi. 1.

Arapaho glacial stage

Pleistocene (middle Wisconsin) : Colorado.

R. L. Ives, 1937, (abs.) Colo. Univ. Studies, v. 25, no. 1, p. 75; 1938, Geol. Soc. 

America Bull., v. 49, no. 7, p. 1059.
18 GEOLOGIC NAMES OF NORTH AMERICA

Arapien shale

Upper Jurassic: Utah.

S. L. Schoff, 1938, Ohio State Univ. Abs. Doctors' Dissert. 25, p. 377-378.

E. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 123-125.

Arc formation

Oligocene, lower: Haiti.

Jacques Butterlin, 1954, Inst. Frangais d'Ha'iti Mem. 1, p. 68.

Arcadia member (of Trempealeau formation)

Upper Cambrian (Groixan) : Wisconsin and Minnesota. 

G. O. Raasch, 1952, 111. Acad. Sci. Trans., v. 44, p. 147.

Arcente member (of Lake Valley formation) 

Mississippian (Osage) : New Mexico.

L. R. Laudon and A. L. Bowsher, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, 

no. 12, p. 2116, 2133-2136, fig. 7.

Arch marble

Paleozic(?) : Virginia.

W. R. Brown, 1951, (abs.) Geol. Soc. America Bull., v. 62, no. 12, pt. 2, p. 1547; 

1953, Ky. Geol. Survey, ser. 9, Special Pub. 1, [p. 9] (fig. 1).

Archer Creek formation

Paleozoic (?) : Virginia.

G. H. Espenshade, 1954, U. S. Geol. Survey Bull. 1008, p. 16-17.

Arch Point basalt

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Rept. 2, pt. 2, p. 13.

Archusa shale member (of Cook Mountain formation) 

Eocene (Claiborne group) : Mississsippi. 

E. P. Thomas, 1942, Miss. State Geol. Survey Bull. 48, p. 49-52.

Arcola limestone member (of Mooreville chalk)

Upper Cretaceous (Selma group) : Alabama and Mississippi. 

L. W. Stephenson and W. H. Monroe, 1938, Am. Assoc. Petroleum Geologists Bull., 

v. 22, no. 12, p. 1655-1657.

Ardian series (epoch)

Lower Pennsylvanian: North America.

R. C. Moore and M. L. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull., 

v. 33, no. 3, p. 286-292.

Ardmore bentonite bed (in Pierre formation) 

Cretaceous: South Dakota. 

K. C. Spivey, 1940, S. Dak. State Geol. Survey Rept. Inv. 36, p. 3, 23-34.

Arikareean age

Miocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 11, 12, pi. 1.

Arizonan revolution

Precambrian: Western North America.

N. E. A. Hinds, 1&36, Carnegie Inst. Washington Pub. 463, pt. 2, p. 100.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 19

Arkill limestone (in Saavedra member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11.

Arkwright group

Upper Devonian: New York.

I. H. Tesmer, 1954, Hobbies, v. 35, no. 2, p. 30, 31.

Arlington gravel member (of Vashon drift) 

Pleistocene: Washington. 

E. C. Newcomb, 1952, U. S. Geol. Survey Water-Supply Paper 1135, p. 26, 27, pi. 1.

Armagh group

Cambrian (?) : Quebec, Canada.

Jacques Beland, 1952, Quebec Dept. Mines Prelim. Kept. 279, p. 3, 4.

Armagosa member (of Red Rose formation)

Upper Jurassic and Lower Cretaceous: British Columbia, Canada.

R. E. Sommers, 1955, British Columbia Bur. Mines Ann. Kept. 1954, p. A89-A90.

Armendaris group

Pennsylvanian (Des Moines) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 41-47.

Armenta horizon (of Becerra formation) 

Pleistocene: Distrito Federal, Mexico.

A. E. V. Arellano, 1946, 2° Congreso Mexicano de Cienc. Sociales Mem., tomo 5, 

p. 217.

Armuelles formation

Pleistocene: Panama and Costa Rica.

R. A. Terry, 1941, Geog. Review, v. 31, no. 3, p. 382, fig. 5.

A. A. Olsson, 1942, Bull. Am. Paleontology, v. 27, no. 106, p. 160-161(8-9).

Arntully serpentine

Pre-late Cretaceous : Jamaica, British West Indies.

G. M. Stockley, 1925, Jamaica Gazette, Supplement, v. 48, no. 5, p. 32.

Aromas red sands

Pleistocene, middle: California.

J. E. Alien, 1946, Calif. Dept. Nat. Res., Div. Mines Bull. 133, p. 18 (fig. 2), 43-45.

Arp sand member (of Reklaw formation)

Eocene (Claiborne) : Texas and Louisiana.

B. W. Blanpied and R. T. Hazzard, 1939, Shreveport Geol. Soc. Guidebook 14th Ann.

Field Trip, p. 128 (correlation chart). 

H. B. Stenzel, 1953, Tex. Univ. Pub. 5305, p. 83-95.

Arrey formation

Pennsylvanian (Derry) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 35-36.

Arrojos formation

Middle Cambrian: Sonora, Mexico.

A. A. Stoyanow, 1942, Geol. Soc. America Bull., v. 53, no. 9, p. 1263-1264.

Arroyo Blarico formation

Miocene, lower: Dominican Republic.

W. M. Small, 1948, Seismol, Soc. America Bull., v. 38, no. 1, p. 26.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 27.
20 GEOLOGIC NAMES OF NORTH AMEKICA

Arroyo Hondo formation 

Eocene: California. 

H. E. Yokes, 1939, N. Y. Acad. Sci. Annals, v. 38, p. 27-32.

Arroyo Hondo shale member (of Lodo formation) 

Eocene: California.

E. T. White, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 257; 1940, Am. Assoc. 

Petroleum Geologists Bull., v. 24, no. 10, p. 1738.

Arroyo Penasco formation

Upper Mississippian: New Mexico.

A. K. Armstrong, 1955, N. Mex. State Bur. Mines Min. Res. Circ. 39, p. 3, 6-9.

Arroyo Seco formation

Miocene, middle: Dominican Republic.

W. M. Small, 1948, Seismol. Soc. America Bull., v. 38, no. 1, p. 26.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 29.

Arsuk group

Precambrian (Algonkian?) : Southwest Greenland.

N. V. Ussing, 1911, Meddel. om Gr0nland, hefte 38, p. 9, pi. 1.

Arthur limestone (in Carbondale formation) 

Pennsylvanian: Indiana. 

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvania!!

strata between Caseyville, Ky. and Vincennes, Ind.; Abs. Thesis, 111. Univ.; Urbana,

111., p. 3, 5.

Artillery formation

Eocene, lower (?) : Arizona.

S. G. Lasky and B. N. Webber, 1949, U. S. Geol. Survey Bull. 961, p. 16-22.

Artist Drive formation

Oligocene and Miocene (?) : California.

L. F. Noble, 1941, Geol. Soc. America Bull., v. 52, no. 7, p. 955-956.

Arvison formation

Lower Jurassic: California.

A. P. Sanborn, [1953], Stanford Univ. Abs. Dissert., v. 27, p. 436.

Aruba formation

Upper Cretaceous: Aruba, Netherlands West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1569.

Arumonogui (Almongui) agglomerate

Oligocene: Caroline Islands (Babelthaup).

Risaburo Tayama, 1939, Brief report on the geology and ore resources of Babelthaup 

Island (Palau Island proper) : Tropical Industry Inst., Palau, South Sea Islands, 

Bull. 3 [Engl'sh translation in library of U. S. Geol. Survey, p. 7-8, 17] ; 1952, 

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 65, table 4 

[English translation in library of U. S. Geol. Survey, p. 78].

Arusa formation

Oligocene, upper: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologie: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 132-133, 134 (correlation chart).

Arvada formation

Pleistocene: Wyoming.

L. B. Leopold and J. P. Miller, 1954, U. S. Geol. Survey Water-Supply Paper 1261, 

p, 8-10.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN1936-1955 21

Asan limestone

Oligocene [Aquitanian]: Mariana Islands (Guam).

Risaburo Tayama, 1952, Coral reefs in the South Seas : Japan Hydrog. Office Bull., 

v. 11, p. 52, table 4 [English translation in library of TJ. S. Geol. Survey, p. 62]. 

Ashcroft series

Jurassic: British Columbia, Canada.

C. H. Crickmay, 1930, Calif. Univ. Pub. Dept. Geol. Sci. Bull., v. 19, no. 2, p. 34, 37.

Ashern formation

Lower Devonian or Silurian: Manitoba, Canada.

A. D. Baillie, 1950, Manitoba Dept. Mines and Nat. Res. Mines Br. Pub. 49-2, p. 9-12.

Asherville alluvium

Pleistocene (?) : Missouri.

Willard Farra;- and Lyle McManamy, 1937, Mo. Geol. Survey and Water Res. 59th 

Biennial Rept, App. 6, p. 38-41.

Ash Hollow formation 

Pliocene: Nebraska.

A. L. Lugn, 1938, Am. Jour. Sci., 5th ser., v. 36, no. 213, p. 223-224, 227; 1939, 

Geol. Soc. America Bull., v. 50, no. 8, p. 1261.

Ashishik basalt

Tertiary and Quaternary: Alaska (Aleutian Islands).

P. M. Byers, Jr., and others, 1947, D. S. Geol. Survey Alaskan Volcano Inv. Kept. 2, 

pt. 3, p. 25.

Ashland limestone

Devonian: Missouri.

E. B. Branson, 1941, Kans. Geol. Soc. Guidebook 15th Ann. Field Conf., p. 81, 83, 85.

Ashuanipi complex or series

Precambrian (Archean) : Quebec and Newfoundland (Labrador), Canada.

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 6.

Asiento formation

Recent (Holocene) : Curasao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologic en geohydrologie van bet Eiland Curasao: Delft, 

J. Waltman, Jr., p. 29.

Asitka group

Permian and older (?) : British Columbia, Canada. 

C. S. Lord, 1946, Canada Geol. Survey Paper 46-6, p. 2.

AsPerdido (Asuberudedo) beds

Eocene: Mariana Islands (Saipan).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 47-48, table 4 [English translation in library of TJ. S. Geol. Survey, p. 57].

Asphalt Ridge sandstone

Upper Cretaceous: Utah.

P. T. Walton, 1944, Geol. Soc. America Bull., v. 55, no. 1, p. 99, 110-111.

Assean Lake series

Precambrian: Manitoba, Canada.

A. S. Dawson, 1941, Manitoba Dept. Mines and Nat. Res. Geol. Rept. 39-1, p. 20-21.

Assignack member (of Burnt Bluff formation) 

Middle Silurian (Niagaran) : Ontario, Canada. 

E. W. Shaw, 1937, Royal Canadian Inst. Trans., v. 21, pt. 2, p. 320.
22 GEOLOGIC NAMES OF NORTH AMERICA

Asuberudedo beds

See As Perdido beds. 

Asuncion group

Upper Cretaceous: California.

N. L. Taliaferro, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 132-134 

[preprint 1941].

Asuncion limestone

See Sonson limestone.

Atalaya limestone

Upper Cretaceous: Puerto Rico.

R. C. Mitchell, 1954, Puerto Rico Univ. Agr. Expt. Sta. Tech. Paper 13, p. 47, 48. 

Atan group

Lower and Middle Cambrian: British Columbia, Canada."

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Atane beds

Upper Cretaceous (Cenomanian) : Northwest Greenland.

Oswald Heer, 1883, Meddel. om Gr0nland, hefte 5, pt. 3, p. 83, 93-112; pt. 5,

p. 226-227. 

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 258-262.

Atanikerdluk beds

Miocene: Northwest Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 258-262.

Atarque member (of Mesaverde formation) 

Upper Cretaceous: New Mexico. 

W. S. Pike, Jr., 1947, Geol. Soc. American Mem. 24, p. 11, 35.

Atascosa formation

Cenozoic(?) : Arizona.

B. P. Webb and K. C. Coryell, 1954, U. S. Atomic Energy Comm. RME-2009, p. 7, 

pi. 1.

Atchison formation

Pleistocene (Kansan) : Kansas.

R. C. Moore and others, 1951, Kans. State Geol. Survey Bull. 89, p. 15.

Athertonville facies (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 148-154.

Athona granite

Precambrian: Saskatchewan, Canada.

A. M. Christie, 1952, Canada Geol. Survey Mem. 269, p. 39-41.

Atil sandstone

Precambrian or Lower Paleozoic : Sonora, Mexico.

Charles Schuchert, 1935, Historical geology of the Antillean-Caribbean region: New

York, John Wiley and Sons, p. 138. 

Manuel Maldonado-Koerdell, 1954, Asociaci6n Mexicana Ge61ogos Petroleros Bol.,

v. 6, nos. 3-4, p. 136.

Atkinson formation

Upper Cretaceous: Subsurface in Georgia, Florida, and Alabama. 

P. L. Applin and E. R. Applin, 1947, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Chart 26.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 193 6-1955 23

Atlantic muck

Pleistocene and Recent: Panama Canal Zone.

[T. F. Thompson], 1943, Panama Canal, Special Bng. Div., 3d Locks Proj., pt. 2,

chap. 3, p. 23, fig. 3-2. 

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, p. 904, table 2.

Atrasado member (of Madera limestone) 

Pennsylvanian: New Mexico.

V. C. Kelley and G. H. Wood, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 47.

Attewell Lake gabbro

Precambrian: Ontario, Canada.

W. D. Harding, 1951, Ontario Dept. Mines Ann. Kept., v. 56, pt. 6, p. 22-24.

Attikamagen formation

Precambrian (Proterozoic) : Quebec and Newfoundland (Labrador), Canada.

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 7-8.

Auger Lake conglomerate

Precambrian (Temiscamian?) : Quebec, Canada.

W. W. Longley, 1951, Quebec Dept. Mines Geol. Kept. 47, p. 7.

Augusta Mountain formation

Middle Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

August Town series

Miocene, upper: Jamaica, British West Indies.

C. A. Matley, 1940, Geol. Soc. London Abs. Proc. 1373, p. 101; 1951, Geology and 

physiography of the Kingston district, Jamaica: Inst. of Jamaica, p. 39-40, 61-62, 

geol. map.

Aunuu tuff

Recent: Samoa Islands (Aunuu).

R. A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 113, pi. B (geol. map).

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 33, no. 11, p. 1285, pi. 1 (geol. map).

Aurela Ridge group

Age unknown: California.

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 231-232, 259, map 1.

Austell granite

Precambrian (?) : Georgia.

G. W. Crickmay, 1952, Ga. Geol. Survey Bull. 58, p. 41-42.

Austin Glen member (of Normanskill formation) 

Middle Ordovician (Chazy) : New York.

Rudolf Ruedemann, 1942, N. Y. State Mus. Bull. 327, p. 28 ; 1942, Bull. 331, p. 102, 

107-108, 115-116 [1946].

Austinville dolomite member (of Shady dolomite) 

Lower Cambrian: Virginia. 

Charles Butts, 1940, Va. Geol. Survey Bull. 52, pt. 1, p. 41-42, 51-52.

Australian members (of Fraser River formation) 

Eocene or older: British Columbia, Canada. 

Douglas Lay, 1940, British Columbia Dept. Mines Bull. 3, p. 5, 15.
24 GEOLOGIC NAMES OF NORTH AMERICA

Avawatz formation

Pliocene, lower: California.

P. C. Henshaw, 1939, Carnegie Inst. Washington Pub. 514, p. 5-7 [preprint].

Avon Park limestone

Eocene, middle: Florida (subsurface and surface).

P. L. Applin and E. R. Applin, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28,

no. 12, p. 1680, 1686-1688. 

R. O. Vernon, 1951, Fla. Geol. Survey Bull. 33, p. 95-111.

Axes Creek phase (of Cherry Creek series) 

Precambrian: Montana. 

E. S. Perry, 1948, Mont. Bur. Mines and Geology Mein. 27, p. 2.

Axtell formation

Tertiary, upper (?) : Utah.

E. M. Spieker, 1949, Utah Geol. Soc. Guidebook 4, p. 38, geol. map.

Aycross formation

Eocene, middle: Wyoming.

J. D. Love, 1939, Geol. Soc. America Special Paper 20, p. 66-73.

Ayers Cliff formation

Middle Ordovician (Trentonian or younger) : Quebec, Canada, and Vermont. 

C. G. Doll, 1951, Vt. Geol. Survey Bull. 3, p. 15, 22-24.

Ay lor member (of Big Saline formation) 

Lower Pennsylvanian: Texas. 

F. B. Plummer, 1947, Jour. Geology, T. 55, no. 3, pt. 2. p. 196, 197.

Aylor Bluff member 

See Aylor member.

Aymamon limestone

Miocene, lower: Puerto Rico.

A. D. Zapp, H. R. Bergquist, and C. R. Thomas, 1948, U. S. Geol. Survey Oil and Gas 

Inv. Prelim. Map 85, sheets 1, 2.

Babcock Hill member (of Onondago formation) 

Middle Devonian : New York. 

R. B. Stevenson, 1949, N. Y. State Sci. Service Rept. Inv. 3, p. 7.

Babeldaob agglomerate

See Babelthaup agglomerate.

Babelthaup agglomerate

Eocene: Caroline Islands (Babelthaup).

Risaburo Tayama, 1935, Topography, geology, and coral reefs of the Palau Islands: 

Tohoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no. 18, 

p. 18-20 40-41 [English translation in library of U. S. Geol. Survey] ; 1939, 

Japanese Jour. Geology and Paleontology Trans. and Aba., nos. 1-2, Abs., p. 29.

Baca formation

Eocene (?) : New Mexico.

R. H. Wilpolt and others, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 61.

Bachelor Lake granite

Precambrian (Algoman?) : Quebec, Canada.

W. W. Longley, 1951, Quebec Dept. Mines Geol. Rept. 47, p. 18.

Backwater Creek shale member (of Fort Scott formation)

See Blackwater Creek shale member (of Fort Scott formation).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-19 5 5 25

Bacolet formation

Cretaceous (?): Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 817-823.

Bacon limestone member (of Ferry Lake formation)

Lower Cretaceous (Glen Rose) : Texas (subsurface).

W. V. Jones, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 6, p. 839-844.

Bacon Ridge sandstone

Upper Cretaceous: Wyoming.

J. D. Love and others, 1948, Wyo. Geol. Survey Bull. 40, p. 1, 2-3.

Badger Bay series

Middle Ordovician ( 1) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 6-11.

Badito quartzite member (of Hopewell series) 

Precambrian: New Mexico. 

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 21.

Baga shale and limestone (in Joserita member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 12.

Baggs Hill granite

Devonian: Newfoundland, Canada.

J. R. Cooper, 1954, Canada Geol. Survey Mem. 276. p. 25.

Bale d'Espoir series

Silurian (?) : Newfoundland, Canada.

W. B. Jewell, 1939, Newfoundland Geol. Survey Bull. 17, p. 6-8.

Baie Verte formation

Ordovician: Newfoundland, Canada.

H. A. Quinn, 1945, Canadian Mining Jour., v. 66, no. 5, p. 307.

K. D. Watson, 1947, Newfoundland Geol. Survey Bull. 21, p. 6-9.

Baker member (of Ladd formation)

See Baker Canyon conglomerate member.

Baker Canyon conglomerate member (of Ladd formation) 

Upper Cretaceous: California.

W. P. Popenoe, 1937, Jour. Paleontology, v. 11, no. 5, p. 380; 1942, Am. Assoc. 

Petroleum Geologists Bull., v. 26, no. 2, p. 170-171.

Baker Creek member (in Yellowknife group)

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. B. G. Brown and A. S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans., 

v. 56, p. 70.

Baker Lake porphyry 

Tertiary: Colorado. 

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 81, 83-84.

Baker Pond gneiss

Upper Devonian (?) (Oliverian magma series) : New Hampshire. 

J. B. Hadley and others, 1938, Geologic map and structure sections of the New 

Hampshire portion of the Mt. Cube quadrangle (1: 62,500) : N. H. Highway Dept. 

J. B. Hadley, 1942, Geol. Soc. America Bull., v. 53, no. 1, p. 137.
26 GEOLOGIC NAMES OF NORTH AMERICA

Bakken formation

Mississippian (Kinder-hook) : Subsurface in North Dakota, Montana, and

Manitoba and Saskatchewan, Canada. 

J. W. Nordquist, 1953, Billings Geol. Soc. Guidebook 4th Ann. Field Conf., p. 72-74,

figs. 4, 5.

Balanos andesite

Eocene: Mariana Islands (Guam).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 48, table 4 [English translation in library of U. S. Geol. Survey, p. 57].

Bald Hill agglomerate member (of Tuscan formation) 

[Pliocene]: California. 

R. C. Treasher, 1947, (abs.) Geol. Soc. America Bull., v. 58, no. 12, pt. 2, p. 1257.

Bald Knoll formation

Eocene, upper or Oligocene, lower: Utah.

W. N. Gilliland, 1949, Ohio State Univ. Abs. Doctors' Dissert. 57, p. 71; 1951, 

Nebr. Univ. Studies, new ser., no. 8, p. 43-47.

Bald Mountain formation 

Precambrian: Utah. 

D. J. Jones, 1955, Utah Geol. Mineralog. Survey Bull. 51, p. 13, 14.

Baldonnel formation

Triassic: British Columbia, Canada.

L. M. Clark, 1954, (abs.) Alberta Soc. Petroleum Geologists News Bull., v. 2, no. 6, p. 5.

Bald Rock granite

Late Jurassic (?): California.

Anna Hietanen, 1951, Geol. Soc. America Bull., v. 62, no. 6, p. 583, 584.

Baldwin formation

Mississippian (Chester) : Illinois.

J. M. Weller in Stuart Weller and J. M. Weller, 1939, 111. State Geol. Survey Kept. 

Inv. 59, p. 12-13.

Baldwin gneiss

Precambrian (?) : California.

R. B. Guillou, 1953, Calif. Dept. Nat. Res., Div. Mines Special Rept. 31, p. 5 (fig. 2), 

6-7.

Baldwin sandstone member (of Mesaverde formation) 

Upper Cretaceous: Colorado. 

B. C. Dapples, 1939, Econ. Geology, v. 34, no. 4, p. 371.

Balfour formation

Oligocene, lower: Colorado.

J. H. Johnson, 1937, (abs.) Colorado Univ. Studies, v. 25, no. 1, p. 77.

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 61-63.

Balls Lake formation

Mississippian and/or Pennsylvanian: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 113-114.

F. J. Alcock [1938], Canada Geol. Survey Mem. 216, p. 32.

Baltimore gabbro

Paleozoic (post-lower Ordovician) : Maryland.

Ernst Cloos in Ernst Cloos and others, 1937, Md. Geol. 'Survey [Rept.], v. 13, pt. 1,

p. 33 (table 1), pi. 1.

C. J. Cohen in Ernst Cloos and others, 1937, Md. Geol. Survey [Rept.], v. 13, pt. 5, 

p. 217, 218.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 27

Bandelier rhyolite tuff

Quaternary: New Mexico.

H. T. D. Smith, 1937, (aba) Geol. Soc. America Proc. 1936, p. 103; 1938, Jour. Geology, v. 46, no. 7, p. 937, 959.

Bandera Quarry sandstone member (of Bandera shale)

Pennsylvanian (Des Moines) : Kansas, Missouri, and Oklahoma.

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 292. 

R. C. Moore, J. C. Frye, and J. M. Jewett, 1944, Kans. State Geol. Survey Bull. 52, 

pt. 4, p. 196.

Banner silt (in Turner Valley member of Livingstone formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1053, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Bao group

Oligocene, upper: Dominican Republic.

W. M. Small, 1948, iSeismol. 'Soc. America Bull., v. 38, no. 1, p. 26.

Barachois series

Upper Carboniferous: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1937, Newfoundland Dept. Nat. Res. Inf. Circ. 3, p. 2, 

map ; 1938, Newfoundland Geol. Survey Bull. 12, p. 21-22.

Baranos andesite

See Balanos andesite.

Barata limestone (in Saavedra member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11.

Bar B formation

Pennsylvanian (Magdalena) : New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 93-94, 

fig. 2.

Barbacoas formation

Pre-Eocene: Panama Canal Zone.

R. T. Hill, 1898, Harvard Coll. Mus. Comp. Zoology Bull., v. 28, no. 5, p. 183-187, 209.

Barberian series

Mesozoic (Early Cretacic) : Arizona and New Mexico.

Charles Keyes, 1940, Pan-Am. Geologist, v. 74, no. 2, p. 105, 147-149.

Barboursville silts

Pleistocene (Illinoian) : West Virginia.

D. P. Stewart, 1952, W. Va. Acad. Sci. Proc., v. 23, p. 113-115.

Barbuda limestone

Pleistocene: Barbuda, British West Indies.

P. M. Duncan, 1863, Geol. Soc. London Quart. Jour., v. 19, p. 451.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581.

Baril member (of Mount Head formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum, Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

426779 57-
28 GEOLOGIC NAMES OF NORTH AMERICA

Barker Dome tongue (of Cliff House sandstone) 

Upper Cretaceous: New Mexico. 

P. T. Hays and A. D. Zapp, 1955, U. S. Geol. 'Survey Oil and Gas Inv. Map OM 144.

Barlow Ranch beds

Pleistocene, lower: California.

J. E. Eaton, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 204, 205 

[preprint 1941].

Barnett Hill formation

Pennsylvanian (Morrow) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 908-912.

Barnsdall formation (of Ochelata group) 

Pennsylvanian: Oklahoma. 

M. C. Oakes, 1951, Tulsa Geol. Soc. Digest, v. 19, p. 119,120.

Barranc6n beds

Upper Cretaceous: Vera Cruz, Mexico.

J. M. Muir, 1936, Geology of the Tampico region, Mexico : Tulsa, Okla., Am. Assoc.

Petroleum Geologists, p. 86. 

Arnold Heim, 1940, Eclogae Geologicae Helvetiae, v. 33, no. 2, p. 329.

Barraute gabbro

Precambrian (Archean) : Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Kept. 255, p. 12.

Barrettia limestone

Upper Cretaceous (Turonian) : Jamaica, British West Indies.

C. T. Treechmann, 1922, Geol. Mag., v. 59, no. 9, table facing p. 423; no. 11,

p. 505-507. 

L. J. Chubb, 1955, Geol. Mag., T. 92, no. 3, p. 188-190.

Barrigada limestone

Pleistocene: Mariana Islands (Guam).

H. T. Stearns, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1948. 

Risaburo Tayama, 1952, Coral reefs in the South Seas : Japan Hydrog. Office Bull., 

v. 11, p. 59, table 4 [English translation in library of U. S. Geol. Survey, p. 69].

Barrilaco caliche

Recent: Cuenca de Mexico, Mexico.

Kirk Bryan, 1948, Soc. Geol. Mexicana Bol., tomo 13, p. 12, pi. 1.

Barril Viejo shale

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 121,123.

Barry Lake gneiss

Precambrian (post-Keewatin?) : Quebec, Canada.

R. L. Milner, 1943, Quebec Dept. Mines Geol. Rept. 14, p. 11-12.

Barrys zone (in Headland gneiss)

Precambrian: Newfoundland, Canada.

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 10-11.

Barslow formation

Triassic and/or older: British Columbia, Canada.

H. S. Bqstock and D. A. McNaughton, 1940, Canada Geol. Survey Map 568A.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN1936-1955 29

Barstovian age

Miocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 12, pi. 1.

Bartholomew siltstone member (of Orangeville shale) 

Mississippian: Pennsylvania. 

Wallace de Witt, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 11, p. 1364.

Bartolo conglomerate

Miocene and Pliocene : California.

G. J. Bellemin, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 4, p. 652 

(fig. 2), 653, 658.

Barton River formation

 Silurian: Vermont, and Quebec, Canada. 

C. G. Doll, 1951, Vt. Geol. Survey Bull. 3, p. 15, 25-32.

Bascom formation

Ordovician: Vermont and Massachusetts.

W. M. Cady, 1945, Geol. Soc. America Bull., v. 56, no. 5, p. 524, 542-545.

Baseline sandstone

Upper Cretaceous : Nevada and Arizona.

C. R. Longwell, 1949, Geol. Soc. America Bull., v. 60, no. 5, p. 929, 932-933.

Basic City shale member (of Tallahatta formation) 

Eocene: Mississippi. 

G. F. Brown and R. W. Adams, 1943, Miss. State Geol. Survey Bull. 55, p. 43-44, 55-56.

Basin rhyolite

Tertiary: Colorado.

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 81, 100-101.

Basin Creek member (of Katalla formation)

Oligocene: Alaska.

D. J. Miller, D. L. Rossman, and C. A. Hickcox, 1945, Preliminary report on petroleum possibilities in the Katalla area, Alaska: U. S. Geol. Survey, p. 9-10; 

Topographic map and sections of the Katalla area, Alaska : D. S. Geol. Survey WarMinerals Inv. Prelim. Map.

Basin Ridge group

Tertiary: Colorado.

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 81, 95-101.

Bassignac tuffs

Miocene, middle: Martinique, French West Indies.

Jean Giraud, 1918, Esquisse ge"ologique de la Martinique avec carte ge"ologique : HanoiHaiphong, Imprimerie d'ExtrSme-Orient, p. 13-17, 19. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1597.

Bassin Zim formation

Oligocene, lower: Haiti.

Jacques Butterlin, [1952], Re'sume' de thSse pre'sente'e a la Sorbonne, La geologic

de la R6publique d'Haiti et ses rapports avec celle des regions voisines (mimeo.),

p. 4; 1954, Inst. Frangais d-Halti Mem. 1, p. 63.

Bastion formation

Lower Cambrian : Northwest Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 27 ; nr. 2, p. 225.
30 GEOLOGIC NAMES OF NORTH AMERICA

Batamote andesite

Pliocene (?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 48-49.

Bat Cave limestone

Lower Ordovician (Canadian) : New Mexico.

V. C. Kelley, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 10, p. 2201 (table). 

V. C. Kelley and Caswell Silver, 1952, N. Mex. Dniv. Pubs, in Geology 4, p. 45-52, 53, 

%. 4.

Bates limestone

Cambro-Ordovician(?) : Maine.

L. W. Fisher, 1936, Am. Mineralogist, v. 21, no. 5, p. 321, 323.

Bath beds (in Oceanic formation)

Eocene, upper: Barbados, British West Indies.

Alfred Senn, 1948, Eclogae Geologicae Helvetiae, v. 40, no. 2, p. 205, table 1.

Battell member (of Monastery formation) 

Lower Cambrian: Vermont. 

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 43, 44.

Battery Point formation

Middle Devonian: Quebec, Canada.

J. A. Dresser and T. C. Denis, 1944, Quebec ;Dept. Mines Geol. Kept. 20, v. 2, p. 300.

Battery Rock cyclothem (including Battery Rock sandstone or conglomerate) 

Pennsylvanian : Kentucky and Illinois.

D. D. Owen, 1856, Ky. Geol. Survey Kept, for 1854 and 1855, p. 49. 

J. M. Weller, 1940, 111. State Geol. Survey Kept. Inv. 71, p. 37-38.

Battle formation

Middle Pennsylvanian: Nevada.

R. J. Roberts, 1951, Geology of the Antler Peak quadrangle, Nevada: U. S. Geol. Survey Geol. Quardrangle Map [GQ 10].

Battle formation

Upper Cretaceous: Saskatchewan, Canada.

G. M. Furnival, 1942, Canada Geol. Survey Paper (Prelim. Map) 42-5.

Battle Ax basalts

Pliocene to Pleistocene: Oregon.

T. P. Thayer, 1936, Jour. Geology, v. 44, no. 6, p. 706, 709 (fig. 2), 713 (fig. 3).

Battlemill beds

Cambrian and Ordovician: Ontario, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2,

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping,

China, University Press, Natl. Univ. Peking, p. 409.

Battle Mountain formation 

Pennsylvanian: Colorado.

C. A. Arnold, 1941, Mich. Univ. Mus. Paleontology Contr., v. 6, no. 4, p. 60, 68. 

K. G. Brill, Jr., 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 8, p. 1379-1392.

Battle Spring formation

Eocene, lower and middle: Wyoming.

G. N. Pipiringos, 1955, Wyo. Geol. Assoc. Guidebook 10th Ann. Field Conf., p. 101, 103.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 31

Baum limestone member (of Paluxy sand) 

Lower Cretaceous: Oklahoma. 

C. W. Tomlinson, 1952, in Ardmore Geol. Soc. [Guidebook] Field Trip, p. 3, 4.

Baxter Hollow granite

Age not stated: Wisconsin.

R. M. Gates, 1942, Am. Mineralogist, v. 27, no. 10, p. 699-711.

Bay mud

Quaternary: California.

P. D. Trask and J. W. Rolston, 1951, Geol. Soc. America Bull., v. 62, no. 9, p. 1079, 

1082, 1105-1109.

Bayard paleosol complex

Oligocene, upper, to Miocene: Nebraska.

C. B. Schultz and T. M. Stout, 1955, Nebr. Univ. State Mus. Bull., v. 4, no. 2, p. 46, 

fig. 10.

Bay d'Est formation

Precambrian (Proterozoic) or Lower Cambrian: Newfoundland, Canada. 

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

Bay du Nord group

Lower or Middle Devonian: Newfoundland, Canada. 

J. R. Cooper, 1954, Canada Geol. Survey Mem. 276, p. 10-11.

Bay of Islands complex

Post-Middle Ordovician, pre-Mississippian: Newfoundland, Canada. 

J. R. Cooper, 1936, Newfoundland Geol. Survey Bull. 4, p. 7-8.

Bayou Calamus lentil (in Verda member of Yazoo clay) 

Eocene (Jackson) : Louisiana. 

J. Huner, Jr., 1939, La. Dept. Conserv. Geol. Bull. 15, p. 159-161.

Bayou Lenann member (of Pendleton formation) 

Eocene, lower (Wilcox) : Louisiana and Texas.

Richard Wasem and L. J. Wilbert, Jr., 1943, Jour. Paleontology, v. 17, no. 2, p. 186, 

fig. 4.

Bay Point formation

Pleistocene: California.

L. G. Hertlein and U. S. Grant, IV, 1939, Calif. Jour. Mines and Geology, v. 35, no. 1, 

p. 63 (fig. 4), 71-72.

Baytree member (of Cardium formation) 

Upper Cretaceous: Alberta, Canada. 

Joseph Gleddie, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 522.

Bead Lake formation

Precambrian: Washington.

M. C. Schroeder, 1952, Wash. Dept. Conserv. Devel., Div. Mines and Geology Bull. 40, 

p. 7, 10-11.

Bealville fanglomerate 

Oligocene: California.

T. W. Dibblee, Jr., and C. W. Chesterman, 1953, Calif. iDept. Nat Res., Div. Mines 

Bull. 168, p. 12, 36-37.

Bear [formation]

Paleocene: Montana.

G. G. Simpson, 1937, U. S. Natl. Mus. Bull. 169, p. 17, 20.
32 GEOLOGIC NAMES OF NORTH AMERICA

Bear Canyon sandstone member (of Kreyenhagen formation) 

Eocene, upper: California. 

I. P. Wilson, 1943, Calif. Jour. Mines and Geology, v. 39, no. 2, p. 211, 226 (fig. 5).

Bear Island granodiorite

Age uncertain: Maryland.

Ernst Cloos in Ernst Cloos and C. W. Cooke, 1953, Geologic map of Montgomery

County and the District of Columbia (1: 62,500) : Md. State Dept. Geology, Mines,

and Water Res.

Bear Mountain granite 

[Precambrian]: Texas. 

R. E. McAdams, 1936, Am. Mineralogist, v. 21, p. 129, 133, 134, 135.

Bear Point limestone

Middle Cambrian: Northwest Territories (Devon Island), Canada. 

V. E. Kurtz, A. H. McNair, and D. B. Wales, 1952, Am. Jour. Sci., v. 250, no. 9. 

p. 648-649.

Bear River formation

Devonian: Nova Scotia, Canada.

H. M. Ami, 1900, Royal Soc. Canada Trans., ser. 2, v. 6, sec. 4, p. 206-207.

Bear Rock formation

Silurian or Devonian: Northwest Territories (Mackenzie), Canada. 

J. S. Stewart, 1944, Canadian Inst. Mining and Metallurgy Trans., v. 47, p. 163; 

1945, Canada Geol. Survey Paper 45-29, p. 5.

Bear Spring formation

Middle Devonian: Texas.

V. E. Barnes, P. E. Cloud, Jr., and L. E. Warren, 1947, Geol. Soc. America Bull., v. 58, 

no. 2, p. 136-138.

Bear Springs basalt

Tertiary, upper: New Mexico.

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Res. Bull. 37, p. 39, 48-49.

Bearwallow schist

Age not stated: North Carolina.

C. E. Hunter and P. W. Mattocks, 1936, TVA Div. Geology Bull. 4* p. 13-14.

Beattie syenite porphyry

Precambrian: Quebec, Canada.

Stanley Davidson and A. F. Banfleld, 1944, Econ. Geology, v. 39, no. 8, p. 537-540.

Beattie Peak formation

Upper Jurassic or Lower Cretaceous: British Columbia, Canada. 

W. H. Matthews, 1947, British Columbia Dept. Mines Bull. 24, p. 11.

Beaver Bight formation

Middle Ordovician(?) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 7-9.

Beaver Brook shale

Cambrian: Newfoundland, Canada.

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 9.

Beaver Dam black shale member (of Needmore shale) 

Middle Devonian: Pennsylvania.

Bradford Willard in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. 

Geol. Survey, ser. 4, Bull. G 19, p. 141, 153.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 33

Beaverdam sand

Pleistocene (early Aftonian) : Maryland.

W. C. Easmussen and T. H. Slaughter, 1955, Md. Dept. Geology, Mines and Water Ees. 

Bull. 16, p. 113-115.

Beaver Divide conglomerate member (of Chadron formation) 

Oligocene, lower: Wyoming. 

R. L. Nace, 1939, Wyo. Geol. Survey Bull. 27, p. 32-34, pi. 1.

Beaverhead formation

Upper Cretaceous, Paleocene, and Eocene: Montana.

A. J. Eardley, 1950, (abs.) Geol. Soc. America Bull., v. 61, no. 12, pt. 2, p. 1552.

W. E. Lowell and M. E. Klepper, 1953, Geol. Soc. America Bull., v. 64, no. 2, p. 235-243.

Beaverhead granite

Eocene: Montana and Idaho.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull.. 

v. 66, no. 4, p. 370-372, pi. 1.

Beaverhill formation

See Beaverhill Lake formation.

Beaverhill Lake formation

Devonian: Alberta, Canada (subsurface).

D. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, p. 1823- 

1824.

Beaverlodge series

Precambrian: Saskatchewan, Canada.

F. J. Alcock, 1936, Canada Geol. Survey Mem. 196, p. 16-18.

B6cancour River formation

Ordovician: Quebec, Canada.

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Eept. 204, p. 13-15.

Becerra formation

Pleistocene, upper: Cuenca de Mexico, Mexico. 

Helmut de Terra, 1947, Ciencia, v. 8, nos. 6-9, p. 154-155.

Beckett limestone or formation 

Middle Ordovician: Missouri. 

E. R. Larson, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 9, p. 2049-2052.

Becks limestone

Devonian: Utah.

N. C. Williams, 1940, 'Compass, v. 20, no. 2, p. 76 (fig. 1), 77.

Beck Spring dolomite

Precambrian (Pahrump series) : California.

D. P. Hewett, 1940, Washington Acad. Sci. Jour., v. 30, no. 6, p. 240.

Bedford Canyon formation

Triassic: California.

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 18-22.

Bee member (of Richfield formation)

Precambrian to Lower Cambrian (?) : British Columbia, Canada. 

A. H. Lang, 1938, Canada Geol. Survey Paper 38-16, p. 8.
34 GEOLOGIC NAMES OF NORTH AMERICA

Beebe School formation

Middle Devonian: Michigan.

W. A. Kelly and G. W. Smith, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 3, 

p. 460-461.

Beechatuda tongue (of Cliff House sandstone) 

Upper Cretaceous: New Mexico. 

P. T. Hays and A. D. Zapp, 1955, U. S. Geol. Survey Oil and Gfas Inv. Map OM 144.

Beecher member (of Bluebell formation) 

Upper Ordovician and Silurian: Utah. 

Paul Billingsley in J. M. Boutwell, 1933, 16th Internat. Geol. Cong. [United States]

Guidebook 17, Excursion C-l, p. 110 (fig. 14). 

J. K. Eigby, 1952, Utah Geol. Mineralog. Survey Bull. 45, p. 23, 27, fig. 6.

Beecher member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 33, figs. 3, 9.

Beehive rhyolite

Tertiary: Arizona.

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 740-741.

Beehive Mesa alluvium

Pleistocene or Recent: California.

B. F. Howell, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, map sheet 10.

Beeman formation

Pennsylvanian (Missourian) : New Mexico.

L. C. Pray, 1954, N. Mex. Geol. Soc. Guidebook 5th Field Conf., p. 93.

Bee Tree shale

Pennsylvanian: Kentucky.

A. F. Crider, 1916, Ky. Geol. Survey [Eept.], 4th ser., v. 4, pt. 1, p. 138, 142.

H. E. Wanless, 1946, Geol. Soc. America Mem. 13, p. 88,136.

Beirdneau sandstone member (of Jefferson formation) 

Devonian: Utah. 

J. S. Williams, 1948, Geol. Soc. America Bull., v. 59, no. 11, p. 1139, 1140.

Belanger member (of Bearpaw formation)

Upper Cretaceous: Saskatchewan, Canada.

G. M. Furnival, 1941, Royal Soc. Canada Trans., v. 35, sec. 4, p. 58-60.

Belcher Island series

Precambrian (Proterozoic) : Quebec, Canada.

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines Geol. Eept. 20, v. 2, p. 47.

Belden shale or formation

Pennsylvanian: Colorado.

K. G. Brill, Jr., 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 8, p. 1385-1386.

Beldens formation

Middle Ordovician (Chazyan) : Vermont.

W. M. Cady, 1945, Geol. Soc. America Bull., v. 56, no. 5, p. 524, 550-552.

Belem formation

Miocene, upper: Tabasco, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart. 

G. P. Salas and Ernesto Lopez Eamos, 1951, AsociaciSn Mexicana GeSlogos Petroleroa 

Bol., v. 3, nos. 1-2, p. 39^10.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 35

Belkofski tuff

Tertiary, upper: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Rept. 2, pt. 2, p. 12.

Bella Union granite

Age not stated: Sonora, Mexico.

W. R. Wade and Alfred Wandtke, 1920, Am. Last. Mining and Metall. Engineers Trans. 

v. 63, p. 383.

Bell Canyon formation

Permian (Guadalupe series) : Texas.

P. B. King in R. K. DeFord and E. R. Lloyd, 1940, Am Assoc. Petroleum Geologists

Bull., v. 24, no. 1, p. 8. 

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 581-582, pi. 2.

Belle Bay volcanics

Ordovician(?) : Newfoundland, Canada.

D. E. White, 1940, Econ. Geology, v. 35, no. 8, p. 968.

Bell Hill dolomite

Middle Silurian: Utah.

F. W. Osterwald, 1953, U. S. Geol. Survey Trace Elements Inv. Rept. TEI-330, p. 105.

Bell River anorthosite

Precambrian: Quebec, Canada.

B. C. Freeman, 1938, Jour. Geology, v. 46, p. 682.

Bell Top formation

Miocene: New Mexico.

F. E. Kottlowski, 1953, N. Mex. GeoL Soc. Guidebook 4th Field Conf., p. 145, 148 

(chart).

Bellwood dolomite

Silurian (Niagaran) : Illinois.

T. E. Savage in C. K. Swartz and others, 1942, Geol. Soc. America Bull., v. 53, no. 4, 

p. 536, Chart 3.

Belridge diatomite

Miocene, upper: California.

S. S. Siegfus, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 1, p. 25.

Belton sandstone member (of Chanute formation) 

Pennsylvanian (Missouri series) : Missouri. 

J. R. Clair, 1943, Mo. Geol. Survey and Water Res. 2d ser., v. 27, p. 20-25, pi. 1.

Bena gravels

Miocene: California.

T. W. Dibblee, Jr., and C. W. Chesterman, 1953, Calif. Dept. Nat. Res., Div. Mines 

Bull. 168, p. 12, 38-40.

Benbolt limestone

Middle Ordovician: Virginia.

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 868-871.

Ben Bow limestone

Eocene: Jamica, British West Indies.

C. A. Matley and Frank Raw, 1942, Geol. Mag., v. 79, no. 4, p. 246, 250-251.

Ben Day porphyry

Tertiary, lower: Texas.

R. L. Ives, 1941, Am. Jour. Sci., v. 239, no. 5, p. 344, 347.
36 GEOLOGIC NAMES OF NORTH AMERICA

Bengal limestone

Miocene: Jamica, British West Indies.

V. A. Zans and H. R. Versey in V. A. Zans, 1954, Jamaica Geol. Survey Dept. Ann. 

Kept. 1952-53, p. 2.

Ben Hur limestone

Middle Ordovician: Virginia.

R. L. Miller and W. P. Brosge, 1950, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 104.

Benitie group

Eocene (?) : Trinidad, British West Indies.

E. H. Cunningham-Craig, 1905, Trinidad Legislative Council Paper no. 25 of 1905, p. 7.

Benner limestone

Middle Ordovician (Mohawkian) : Pennsylvania.

G. M. Kay, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1969.

Bennett formation

Pliocene, lower: California.

0. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Benson dolomite member (of Tribes Hill formation) 

Lower Ordovician: New York.

R. R. Wheeler, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1938-1939 ; 

1942, Am. Jour. Sci., v. 240, no. 7, p. 518, 522.

Benson facies (of Cow Bayou member of Logansport formation) 

Paleocene (Midway) : Louisiana. 

G. E. Murray, 1948, La. Dept. Conserv. Geol. Bull. 25, p. 112-114.

Bentley formation

Pleistocene: Louisiana.

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 78,157-160.

Bent Mountain member (of Bluestone formation)

 Mississippian (Chester) : West Virginia and Virginia. 

B. N. Cooper, 1944, Va. Geol. Survey Bull. 60, p. 186.

Berdoo granite

Precambrian: California.

W. J. Miller, 1946, Geol. Soc. America Bull., v. 57, no. 5, p. 473.

Bergen shale member (of Lykins formation) 

Permian: Colorado. 

L. W. LeRoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 31, 33, 35.

Berino member (of Magdalena formation) 

Pennsylvanian: Texas.

L. A. Nelson, 1937, Colo. Univ. Studies, v. 25, no. 1, p. 89 ; 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 167, 168-170.

Bernal formation

Permian: New Mexico.

V. C. Kelley, 1949, N. Mex. Univ. Pubs, in Geology 2, fig. 2.

G. 0. Bachman, 1953, U. S. Geol. Survey Oil and Gas Inv. Map OM 137.

Bernetz gneiss

Precambrian (post-Keewatin) : Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Rept. 24, p. 12.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-19 5 5 37

Berry formation

Eocene to Miocene, lower: California.

E. E. Thorup, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1958 ; 

1943, Calif. Dept. Nat. Ees., Div. Mines Bull. 118, pt. 3, p. 464, 465.

Berryessa formation

Cretaceous: California.

M. D. Crittenden, Jr., 1951, Calif. Dept. Nat. Ees., Div. Mines Bull. 157, p. 22 (flg. 4), 

33-35, pi. 1 (geol. map).

Bessmer sandstone or quartzite

Precambrian (Proterozoic) : Michigan.

W. A. Seaman in A. K. Snelgrove, W. A. Seaman, and V. L. Ayres, 1944, Mien. Dept 

Conserv. Geol. Survey Div. Progress Eept. 10, p. 16.

Betheden formation

Paleocene or Eocene: Mississippi.

P. P. Mellen, 1939, Miss. State Geol. Survey Bull. 38, p. 26-28.

Beulah Church sand lentil (in Slaughter Creek member of Pendleton formation) 

Eocene, lower (Wilcox) : Louisiana and Texas.

Eichard Wasem and L. J. Wilbert, Jr., 1943, Jour. Paleontology, v. 17, no. 2, p. 187, 

fig. 4.

Bevier cyclothem or formation (including Bevier clay)

Pennsylvanian (Des Moines) : Missouri and Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 19, 

23 ; 1938, Kans. Acad. Sci. Trans., v. 41, p. 193, 195.

Biche limestone

Miocene, lower and middle: Trinidad, British West Indies.

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1451

(chart). 

H. H. Eenz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 555.

Bidarka formation

Lower Jurassic: Alaska.

L. B. Kellum, 1945, N. Y. Acad. Sci. Trans., ser. 2, v. 7, no. 8, p. 203, 208.

Bide Arm formation

Ordovician: Newfoundland, Canada.

Frederick Betz, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 19-20.

Bid well member (of Cataract formation)

Lower Silurian (Alexandrian) : Ontario, Canada.

E. W. Shaw, 1937, Eoyal Canadian Inst. Trans., v. 21, pt. 2, p. 320.

Big Branch gneiss

Precambrian: Texas.

V. E. Barnes, 1940, in Geol. Soc. America [Guidebook] 53d Ann. Meeting, p. 53 

(geol. map).

Big Butt quartzite

Precambrian: North Carolina, Georgia, and Tennessee.

G. W. Stose and A. J. Stose, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12. 

pt. 2, p. 1233 ; 1949, v. 60, no. 2, p 272-273, 284-285.

Bigelow glacial substage

Pleistocene (Tazewell) : Colorado.

E. L. Nelson, 1954, Jour. Geology, v. 62, no. 4, p. 329-331.
38 GEOLOGIC NAMES OF NORTH AMERICA

Big Falls picritic basalt

Pleistocene(?) : Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography Bull. 7, p. 231, 238-241.

Big Megantic nordmarkite or granite 

Devonian: Quebec, Canada. 

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines Geol. Kept. 20, v. 2, p. 462.

Bignell loess

Pleistocene and Recent: Nebraska.

C. B. Schultz and T. M. Stout, 1945, Am. Jour. Sci., v. 243, no. 5, p. 241-244.

Big Oak Flat shale and sandstone member (of Panoche group) 

Upper Cretaceous: California.

I. F. Wilson, 1943, Calif. Jour. Mines and Geology, v. 39, no. 2, p. 203-204, 226 

(fig. 5).

Big Run sandstone

PennsyIranian (Monongahela) : Ohio.

A. T. Cross, W. H. 'Smith, and Thomas Arkle, Jr., 1950, Field guide for the special 

field conference on the stratigraphy, sedimentation and nomenclature of the Upper 

Pennsylvanian and Lower Permian strata (Monongahela, Washington and Greene 

series) in the northern portion of the Dunkard Basin of Ohio, West Virginia, and 

Pennsylvania: W. Va. Geol. and Econ. Survey, Section 12-A, [pi. 1].

Big Saline group

Pennsylvanian (Lampasas) : Texas.

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 83.

Big Spring member (of Conococheague limestone) 

See Big Spring Station member.

Big Spring Station member (of Conococheague limestone)

Upper Cambrian (Dresbachian) : Maryland and Pennsylvania.

Ernst Cloos, 1951, Md. Dept. Geology, Mines and Water Res., Washington County

[Eept. 14], p. 45, 55-56. 

J. L. Wilson, 1952, Geol. Soc. America Bull., v. 63, no. 3, p. 307-308.

Big Valley member (of Wabamun formation)

Upper Devonian: Alberta, Canada (subsurface).

J. S. Wonfor and J. M. Andrichuck, 1953, Alberta Soc. Petroleum Geologists News 

Bull., v. 1, no. 9, p. 3.

Big Wash andesite 

Tertiary: Arizona. 

B. E. Thomas, 1949, Econ. Geology, v. 44, no. 8, p. 667-669.

Bijou formation

Miocene to Pliocene (Barstovian-Clarendonian) : South Dakota.

E. E. Stevenson and L. A. Carlson, 1950, Areal geology of the Bonesteel quadrangle

(1: 62,500) :S. Dak. State Geol. Survey. 

E. E. Stevenson, 1953, S. Dak. Acad. Sci. Proc., v. 42, p. 86-89

Bijuco nepheline syenite 

Age not stated: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologie: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 134.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN1936-1955 39

Bilk Creek sandstone member (of Wanakah formation) 

Upper Jurassic: Colorado.

M. I. Goldman and A. C. Spencer, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, 

no. 9, p. 1750, fig. 3.

Billings formation

Ordovician: Ontario, Canada.

A. E. Wilson, 1937, Eoyal Soc. Canada Trans., ser. 3, v. 31, sec. 4, p. 46; 1940, 

Canada Geol. Survey Map 588A.

Billings member (of Burnt Bluff formation)

Middle Silurian (Niagaran) : Ontario, Canada.

E. W. Shaw, 1937, Eoyal Canadian Inst. Trans., v. 21, pt. 2, p. 320.

Billings member (of Wellington formation) 

Permian: Oklahoma. 

G. O. Eaasch, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1928.

Billy Lake quartz porphyry

Precambrian (Algoman?) : Quebec, Canada.

W. W. Longley, 1951, Quebec Dept. Mines Geol. Eept. 47, p. 17-18.

Binghamton drift

Pleistocene (Wisconsin) : New York and Pennsylvania.

Paul MacClintock and E. T. Apfel, 1944, Geol. Soc. America Bull., v. 55, no. 10, 

p. 1155-1159.

Birchy schist

Precambrian: Newfoundland, Canada.

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 14.

Bird River intrusive complex

Precambrian (Archean) : Manitoba, Canada.

J D. Bateman, 1943, Canadian Inst. Mining and Metallurgy Trans., v. 46, p. 161.

Birkmose member (of Franconia formation) 

Upper Cambrian: Wisconsin and Minnesota. 

R. R. Berg, 1951, Minn. Geologist, v. 8, no. 4, p. [1].

Birse member (of Stony Mountain formation)

Upper Ordovician (Richmond) : Manitoba, Canada.

V. J. Okulitch, 1943, Royal Soc. Canada Trans., sec. 4, v. 37, p. 63-64.

Bishop tuff

Pleistocene: California.

C. M. Gilbert, 1938, Geol. Soc. America Bull., v. 49, no. 12, p. 1830-1860.

Bishop Creek granite

Upper Jurassic or Lower Cretaceous (?) : California. 

G. A. Schroter, 1938, Eng. and Mining Jour., v. 139, no. 4, p. 43.

Bishops Cap member (of Magdalena formation) 

Pennsylvanian: Texas.

L. A. Nelson, 1937, Colo. Univ. Studies, v. 25, no. 1, p. 89; 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 166-108.

Bishops Lodge member (of Tesuque formation) 

Miocene, middle (?) : New Mexico. 

P. E. Kottlowski, 1953, N. Mex. Geol. Soc. Guidebook 4th Field Conf., p. 148 (chart).
40 GEOLOGIC NAMES OF NORTH AMERICA

Bissex Hill marl

Oligocene, upper: Barbados, British West Indies.

G. F. Franks and J. B. Harrison, 1898, Geol. Soc. London Quart. Jour., v. 54.

p. 544, 546. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1580, 1590.

Bisteneau member (of Hall Summit formation) 

Paleocene (Midway) : Louisiana.

D. P. Meagher and L. C. Aycock, 1942, La. Dept. Conserv. Geol. Pamph. 3, p. 12-16. 

G. E. Murray, Jr., ami B. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull., 

v. 29, no. 1, p. 59.

Bitterwater formation

Pliocene and Quaternary, upper: California.

O. P. Jenklns, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Bj0rne 0 conglomerate

Age not stated: Northeast Greenland.

Curt Teichert, 1933, Meddel. om Gr0nland, bind 95, nr. 1, p. 38-44, 60, pi. 1.

Blaa Mountain formation

Middle to Upper Triassic (Ladinian-Karnian) : Northwest Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 74.

Black Butte till

Eocene: Montana.

H. W. Scott, 1938, Jour. Geology, v. 46, no. 4, p. 628-635.

Black Canyon group

Tertiary (?) (pre-Pliocene) : Nevada.

C. R. Longwell, 1936, Geol. Soc. America Bull., v. 47, no. 9, p. 1417-1419.

Black Eagle sandstone (in Bearpaw formation)

Upper Cretaceous: Alberta and Saskatchewan, Canada. 

L. S. Russell, 1950, Geol. Soc. America Bull., v. 61, no. 1, p. 31-32.

Blackfoot Canyon facies (of Belt series)

Precambrian: Alberta, Canada ; and Montana.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p. 1877.

Blackford formation

Middle Ordovician: Virginia.

Charles Butts, 1940, Va. Geol. Survey Bull. 52, pt. 1, p. 126, 131-134.

Blackhead formation

Precambrian: Newfoundland, Canada.

A. O. Hayes, 1931, Econ. Geology, v. 26, no. 1, p. 46 (table), 47 (map).

Black Island member (of Winnipeg formation)

Ordovician: Saskatchewan and Manitoba, Canada.

W. O. Kupsch, 1953, Saskatchewan Dept. Nat. Res. Rept. 10, p. 11.

G. J. Genik, 1954, Alberta Soc. Petroleum Geologists News Bull., v. 2, no. 5, p. 1.

Blackiston formation

Upper Devonian: Indiana, Kentucky, and Ohio.

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 837, 842-847, 868-869, 

875-879.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 41

Blackjack Creek cyclothem (including Blackjack Creek limestone)

Pennsylvanian (Des Moines) : Missouri, Iowa, Kansas, and Nebraska. 

L. M. Cline, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 1, p. 36-37. 

J. M. Jewett, 1945, Kans. State Geol. Survey Bull. 58, p. 22-23, 62.

Blackjack Knob member (of Theodosia formation) 

Lower Ordovician: Missouri and Arkansas.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 25, 27.

Black Knob dolomite (in Pacheta member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 12.

Black Knob quartzite (in Pacheta member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 12.

Black Lake lagunal facies

Middle Devonian: Michigan.

[O. M. Ehlers], 1938, Mich. Acad. Sci. Arts and Letters Sec. Geology and Mineralogy

[Guidebook] 8th Ann. Field Excursion, [fig. 2] after p. 8. 

W. A. Kelly, 1940, Mich. Acad. Sci. Arts and Letters Sec. Geology and Mineralogy

[Guidebook] 10th Ann. Field Excursion, [fig. 1].

Black Point ash

Recent: Hawaiian Islands (Oahu).

H. T. Stearns, 1940, Hawaii Div. Hydrography Bull. 5, p. 53.

Black Point basalt

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Kept. 2, pt. 2, p. 13.

Black Point dolomite member (of Cherry Creek series) 

Precambrian: Montana. 

B. S. Perry, 1948, Mont. Bur. Mines and Geology Mem. 27, p. 7.

Black Point formation

Mississippian: Newfoundland, Canada.

L. J. Weeks, 1955, Canada Geol. Survey Map 1043A.

Black Point limestone

Age not stated: Hawaiian Islands (Oahu).

H. T. Stearns, 1940, Hawaii Div. Hydrography Bull. 5, p. 53.

Black Point limestone

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1938, Newfoundland Geol. Survey Bull, 12, p. 13.

Black Prince limestone

Upper Mississippian or Lower Pennsylvanian (?) : Arizona.

T. M. Eomslo, 1949, U. S. Bur. Mines Bept. Inv. 4504, p. 5.

James Gilluly, J. E. Cooper, and J. S. Williams, 1954, U. S. Geol. Survey Prof. Paper 

266, p. 13-15.

Black River group

Precambrian: Quebec, Canada.

J. W. Ambrose and H. C. Gunning, 1939, Canada Geol. Survey Paper (Prelim. Map) 

39-12.
42 GEOLOGIC NAMES OF NORTH AMEEICA

Black Shale Brook formation

Upper Cambrian (Johannian) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 77-79.

Blacktail formation

Cenozoic(?) : Arizona.

H. E. Enlows, 1955, Geol. Soc. America Bull., v. 66, no. 10, p. 1217.

Blacktail granite gneiss

Precambrian (pre-Beltian) : Montana.

B. W. Heinrich, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt. 2, p. 1329.

Blacktail Deer Creek basalts 

Miocene, lower: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 374, pi. 1.

Black Trout diorite

Precambrian (Archean or Proterozoic) : Manitoba, Canada.

A. P. Fawley, 1949, Manitoba Dept. Mines and Nat. Res. Rept. and Map 48-6, p. 12-13.

Blackwater Creek shale member (of Fort Scott formation) 

Pennsylvanian (Des Moines) : Missouri. 

J. R. Clair, 1943, Mo. Geol. Survey and Water Res., 2d ser., v. 27, pi. 2.

Blake River group 

Precambrian: Quebec, Canada.

H. C. Gunning and J. W. Ambrose, 1937, Canadian Inst. Mining and Metallurgy Trans., 

v. 40, p. 344-345.

Blancan age

Pliocene: North America.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 12-13, pi. 1.

Blanco sandstone (in Puente formation) 

Miocene, middle: California.

M. L. Krueger, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 363. 

A. O. Woodford, T. G. Moran, and J. S. Shelton, 1946, Am. Assoc. Petroleum Geologists 

Bull., v. 30, no. 4, p. 521.

Blauwbaai conglomerate

Pleistocene: Curasao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologie en geohydrologie van het Eiland Curasao: Delft, 

J. Waltman, Jr., p. 92, strat. table.

Blessington gabbroic anorthosite. 

Precambrian: Ontario, Canada. 

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.

Blind Boy member (of Red Rose formation)

Upper Jurassic and Lower Cretaceous: British Columbia, Canada.

R. E. Sommers, 1955, British Columbia Bur. Mines Ann. Rept. 1954, p. A89-A90.

Blind Creek formation

Permian: British Columbia, Canada.

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Blocher formation

Middle Devonian: Indiana.

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, No. 9, p. 841-842, 845.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 43

Blomsterbaek limestone member (of Cape Wood formation)

Middle Cambrian: Northwest Territories (Bllesmere Island), Canada; and

North Greenland. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 43, 46.

Blomsterbukta quartzite and shale

Middle Cambrian (?) : Northeast Greenland.

A. B. Cleaves and B. F. Fox, 1935, Geol. Soc. America Bull., v. 46, no. 3, p. 473 474, 

pi. 43.

Blondeau limestone conglomerate

Ordovician (Chazyan) : Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p 415, 422.

Bloomsdale formation

Middle Ordovician: Missouri.

B. E. Larson, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 9, p. 2046-2048.

Blounts Creek member (of Fleming formation)

Miocene: Louisiana. . 

H. N. Fisk, 1940, La. Dept. Conserv. Geol. Bull. 18, p. 118,168-170.

Blow-me-down complex

Upper Ordovician or Devonian: Newfoundland, Canada.

A. K. Snelgrove, F. W. Eoebling, III, and J. L. Kemmerer, Jr., 1934, Am. Mineralogist, 

v. 19, no. 1, p. 22-23.

Bluebell limestone

Cambrian or Ordovician: British Columbia, Canada. 

Anonymous, 1954, Canadian Mining Jour., v. 75, no. 5, p. 177.

Bluebonnet member (of Lake Waco formation) 

Cretaceous (Gulf) : Texas.

W. S. Adkins and F. E. Lozo in F. B. Lozo, 1951, Fondren Sci. Series, no. 4, p. 122-123, 

fig. 25.

Blue Creek Canyon group 

Cambrian: Oklahoma. 

W. B. Ham, 1949, Okla. Geol. Survey Circ. 26, p. 19.

Blue Mountain gravel

Quaternary: Arizona.

Donaldson Eoons, 1948, Plateau, v. 20, no. 4, p. 54 (fig. 1), 58-59.

Blue Ridge member (of Graminia formation) 

Devonian: Alberta, Canada (subsurface). 

A. L. Choquette, 1955, Alberta Soc. Petroleum Geologists Jour., v. 3, no. 5, p. 70-73.

Bluesky formation

Lower Cretaceous: Alberta, Canada (subsurface).

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 9,12.

Blue Springs muscovite schist 

Precambrian: New Mexico.

J. T. Stark and E. C. Dapples, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, 

pt. 2, p. 1936; 1946, v. 57, no. 12, pt. 1, p. 1130-1133.

Bluestone facies (of New Providence formation) 

Lower Mississippian: Kentucky.

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 125-132. 

426779 57 4
44 GEOLOGIC NAMES OF NORTH AMERICA

Bluewater formation

Permian: New Mexico and Arizona.

S. B. Talmage and T. P. Wootton, 1937, N. Mex. State Bur. Mines Min. Res. Bull. 12, 

p. 30.

Bluff Head volcanics

Post-Middle Ordovician, pre-Mississippian: Newfoundland, Canada. 

J. R. Cooper, 1936, Newfoundland Geol. Survey Bull. 4, p. 22.

Bluff Mesa formation

Lower Cretaceous: Texas.

Elliot Gillerman, 1953, U. S. Geol. Survey Bull. 987, p. 12, 16-18.

Blyklippen series

Middle Pennsylvanian: Northeast Greenland.

Bmil Witzig, 1954, Meddel. om Gr0nland, bind 72, afd. 2, nr. 5, p. 8-9, 24.

Boardman formation

Lower Ordovician (Canadian) : Vermont.

Phillip Fowler, 1950, Vt. Geol. Survey Bull. 2, p. 13, 24-27.

Boar Head formation

Lower Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 108-109.

Boarmanmember (of Mifflinformation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3,10,16.

Boca de Serpiente formation

Eocene, upper: Trinidad, British West Indies. 

C. J. Maury, 1929, Jour. Geology, v. 37, no. 2, p. 181.

Boca Santo Preto conglomerate

Recent (Holocene) : Curasao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologie en geohydrologie van het Eiland Curasao: Delft, 

J. Waltman, Jr., p. 30, 92, strat. table.

Bode conglomerate

Precambrian: Northwest Territories (Mackenzie), Canada.

Neil Campbell, 1947, Canadian Inst. Mining and Metallurgy Trans., v. 50, p. 511-514.

Bofay formation

Cretaceous: Hidalgo, Mexico.

F. S. Simons, 1951, Stanford Univ. Abs. Dissert., v. 26, p. 333.

Boggs Mountain flows

Quaternary: California.

J. C. Brice, 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 166, p. 12, pi. 7.

Bogota cyclothem (including Bogota limestone and shale) 

Pennsylvanian: Illinois. 

W. A. Newton and J. M. Weller, 1937, 111. State Geol. Survey Kept. Inv. 45, p. 19-24.

Boice shale

Mississippian: Nebraska (subsurface).

E. C. Reed, 1946, Am. Assoc. Petroleum Geologists Bull., v. 30, no. 3, p. 348-349.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-19 5 5 45

Bois Blanc formation

Middle Devonian: Michigan.

G. M. Ehlers in K. K. Landes, G. M. Ehlers, and G. M. Stanley, 1945, Mich. Dept. 

Conserv. Geol. Survey Div. Pub. 44, Geol. Ser. 37, p. 34, 35, 80-109.

Bolander group

Pennsylvanian (Des Moines) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 51-55.

Bolanos andesite

See Balanos andesite.

Bolarian series

Middle Ordovician: Virginia, Kentucky, West Virginia, Maryland, Pennsylvania, and New York, and Ontario, Canada.

Marshall Kay, 1947, (abs.) Geol. America Bull., v. 58, no. 12, pt. 2, p. 1198- 

1199 ; 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 8, p. 1401, 1402.

Boleo formation

Pliocene, lower : Baja California, Mexico.

I. F. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p. 1774-1780.

Boley conglomerate member (of Vamoosa formation) 

Pennsylvanian (Virgil) : Oklahoma. 

R. R. Ries, 1954, Okla. Geol. Survey Bull. 71, p. 82-83.

Bon Accord conglomerate

Eocene: Trinidad, British West Indies.

H. G. Kugler and others, [1939], Geological conference in Trinidad; notes on the

excursions: Petroleum Assoc. Trinidad, p. 9. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 541.

Bon Accord formation

Lower Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1950, Asociaci6n Venezolana de Geologfa y Petr61eo Bol., tomo 2, no. 1, 

p. 48 (correlation chart).

Bonita Park formation 

Cenozoic: Arizona. 

H. B. Enlows, 1955, Geol. Soc. America Bull., v. 66, no. 10, p. 1217.

Bonnetian age and stage

Middle Cambrian: North America.

B. F. Howell and J. F. Mason, 1938, Jour. Paleontology, v. 12, no. 3, p. 297.

Bonneville formation

Pleistocene and Recent: Utah.

K. C. Bullock, 1951, Utah Geol. Mineralog. Survey Bull. 41, p. 21. 

C. B. Hunt, H. D. Varness, and H. B. Thomas, 1953, U. S. Geol. Survey Prof. Paper 

257-A, p. 20-21.

Bonsall tonalite

Upper Cretaceous: California.

C. S. Hurlbut, Jr., 1935, Am. Mineralogist, v. 20, no. 9, p. 611-613.

Bontour formation

Upper Cretaceous: Trinidad, British West Indies.

G. D. Harris in G. A. Waring, 1926, Johns Hopkins Univ. Studies in Geology, no. 7,

p. 97. 

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull.,

v. 20, no. 59, p. 38.
46 GEOLOGIC NAMES OF NORTH AMERICA

Bony Falls member (of Black River formation) 

Middle Ordovician: Michigan.

K. C. Hussey, 1952, Mien. Dept. Conserv. Geol. Survey Div. Pub. 46, Geol. Ser. 39, 

p. 13-14.

Boone Gap facies (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 119-121.

Boott member (of Littleton formation) 

Lower Devonian: New Hampshire. 

M. P. Billings and others, 1945, Geologic map and structure sections of the Mt.

Washington quadrangle, New Hampshire (1: 62,500) : N. H. State Plan. Devel.

Comm. and Highway Dept.; 1946, Geol. Soc. America Bull., r. 57, no. 3,

p. 264-265.

Boquilla formation

Pliocene, upper: Chihuahua, Mexico.

L. C. Pray, 1953, in Geological sciences at the California Institute of Technology: 

Calif. Inst. Technology, p. 32.

Boracho sandstone

Cretaceous (Comanche) : Texas.

W. E. Tipton, 1951, in W. Tex. Geol. Soc. Guidebook Fall Field Trip, Oct. 26-27, 

p. 29 (geol. map).

B0rglum River limestone

Middle or Upper Ordovician (Champlainian or Cincinnatian) : North Greenland. 

J. C. Troelsen, 1949, Meddel. om Gr0nland, bind 149, nr. 2, p. 18-19, pi. 1.

Boring agglomerate

Pliocene, upper, or Pleistocene, lower: Oregon.

K. C. Treasher, 1942, Oreg. State Dept. Geology and Mineral Industries G. M. I. Short 

Paper 7, p. 10.

Boring lava

Pliocene, upper, or Pleistocene, lower: Oregon.

E. C. Treasher, 1942, Oreg. State Dept. Geology and Mineral Industries G. M. I. Short 

Paper 7, p. 10.

Borradaile member (of Mannville formation)

Lower Cretaceous: Alberta, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1615.

Borrego formation

Pliocene, upper: California.

L. A. Tarbet and W. H. Holman, 1944, (abs.) Am. Assoc. Petroleum Geologists Bull., 

v. 28, no. 12, p. 1782.

Bose gravel

Pleistocene to Recent: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 11.

Boskydell marine horizon (in Pottsville formation) 

Pennsylvanian: Illinois. 

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 34.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-19 5 5 47

Bossier formation

Upper Jurassic (Cotton Valley group) : Subsurface in Louisiana and Texas. 

F. M. Swain, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 5, p. 582-594.

Boston glacial substage

Pleistocene (Wisconsin) : Massachusetts.

S. S. Judson, Jr., 1949, Peabody Foundation for Archaeology Papers, v. 4, no. 1, 

p. 12-23.

Boswarlis beds

Mississippian (Meramecian) : Newfoundland, Canada.

J. M. Weller and others, 1948, Geol. Soc. America Bull., v. 59, no. 2, Chart 5, col. 116.

Botetourt limestone member (of Edinburg formation) 

Middle Ordovician: Virginia. 

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 80.

Botwood formation

Silurian: Newfoundland, Canada.

W. H. Twenhofel and R. R. Shrock, 1937, Geol. Soc. America Bull., v. 48, no. 12, 

p. 1749, 1767.

Boucher formation

Middle Cambrian: Vermont.

Phillip Fowler, 1950, Vt. Geol. Survey Bull. 2, pi. 1.

Boucher tongue

Lower and/or Middle Cambrian: Arizona.

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 101-102.

Boulder Wash group

Precambrian or Tertiary: Nevada.

C. R. Longwell, 1936, Geol. Soc. America Bull., v. 47, no. 9, p. 1407-1409.

Bouldin member (of Lake Waco formation) 

Cretaceous (Gulf) : Texas.

W. S. AdMns and F. B. Lozo in F. E. Lozo, 1951, Fondren Sci. Series, no. 4, p. 120-122, 

fig. 25.

Boulter gabbro

Precambrian: Ontario, Canada.

D. F. Hewitt, 1955, Ontario Dept. Mines Ann. Kept., v. 63, pt. 6, p. 12.

Boulter granite

Precambrian: Ontario, Canada.

D. F. Hewitt, 1955, Ontario Dept. Mines Ann. Kept., v. 63, pt. 6, p. 15.

Bourg du Marin limestone

Oligocene: Martinique, French West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1596.

Bourinot group

Middle Cambrian: Nova Scotia, Canada.

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 8-10.

Bourlamaque granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem, 

166, p. 133.
48 GEOLOGIC NAMES OF NORTH AMERICA

Bowen formation

Middle Ordovician: Virginia.

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America BulL, v. 54, no. 6, p. 876-877.

Bowen Island group

Triassic(?) and/or older: British Columbia, Canada. 

J. B. Armstrong, 1954, Canada Geol. Survey Paper 53-28, p. 1-2.

Bowes member (of Piper formation)

Middle Jurassic: Montana (subsurface and surface).

J. W. Nordquist, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., p. 97, 

102-103.

Bow Lake flow (in Tellowknife group)

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. B. G. Brown and A. S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans., 

v. 56, p. 70-71.

Bowmanstown chert

Middle Devonian: Pennsylvania.

F. M. Swartz in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. Geol. 

Survey, ser. 4, Bull. G 19, p. 52, fig. 17.

Bowser member (of Tuxedni formation) 

Middle Jurassic: Alaska.

C. E. Kirschner and D. L. Minard, 1948, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 95 [1949].

Box member (of Percha shale formation) 

Upper Devonian: New Mexico.

F. V. Stevenson, 1944, Dallas Digest Joint Ann. Meeting, p. 95 ; 1945, Jour. Geology, 

v. 53, no. 4, p. 241-244.

Box Butte member (of Sheep Creek formation) 

Miocene: Nebraska. 

K. C. Cady, 1940, Am. Jour. Sci., v. 238, no. 9, p. 063-667.

Box Canyon member (of Mutual quartzite) 

Precambrian: Utah. 

N. C. Williams, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 12, p. 2737, 2738.

Box Springs complex

Precambrian (?) : California.

W. J. Miller, 1946, Geol. Soc. America Bull., v. 57, no. 5, p. 477.

Boysen formation

Upper Cambrian: Wyoming.

Charles Delss, 1938, Geol. Soc. America Bull., v. 49, no. 7, p. 1104.

Brackett member (of Stowe formation) 

Lower Cambrian (?) : Vermont. 

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 66.

Bradley granodiorite

Upper Jurassic: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, No. 1, p. 52-59.

Bradshaw formation

Triassic and/or older: British Columbia, Canada.

H. S. Bostock and D. A. McNaughton, 1940, Canada Geol. Survey Map 568A.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-19 5 5 49

Brady soil

Pleistocene (Wisconsin) : Nebraska.

C. B. Schultz and T. M. Stout, 1948, Geol. Soc. America Bull., v. 59, no. 6, p. 570.

Bradyan interglacial substage

Pleistocene (Wisconsin) : North America.

A. B. Leonard, 1951, Jour. Geology, v. 59, no. 4, p. 325.

Bralorne intrusives

Jurassic (?) : British Columbia, Canada.

C. B. Cairnes, 1937, Canada Geol. Survey Mem. 213,'p. 21-27.

Brandt sandstone (in Kingsley member of Wellsburg monothem) 

Upper Devonian (Chautauquan) : Pennsylvania. 

K. E. Caster, 1938, Jour. Paleontology, v. 12, no. 1, p. 45 (fig. 7), 47.

Bransford sandstone member (of Gassaway formation) 

Lower Mississippian: Tennessee and Alabama. 

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 884, 885.

Brassier-Dollard biotite granite

Precambrian (Archean) : Quebec, Canada.

A. S. MacLaren, 1950, Canada Geol. Survey Map 997A.

Brasso clay (in Manzanilla formation)

Miocene, middle: Trinidad, British West Indies.

G. A. Waring, 1926, Johns Hopkins Univ. Studies in Geology, no. 7, p. 69, 71, pi. 0 

(geol. map).

Brasso conglomerate member (of Manzanilla formation) 

Miocene, middle: Trinidad, British West Indies. 

G. A. Waring, 1926, Johns Hopkins Univ. Studies in Geology, no. 7, p. 69-70.

Brasso formation

Oligocene, middle, to Miocene, middle: Trinidad, British West Indies. 

A. B. Thompson, 1925, Oil field exploration and development, v. 1, Oil field principles : New York, D. VanNostrand Co., p. 389, 391. 

H. H. Renz, 1942, 8th Am. Sci. Cong., v. 4, p. 545-549, 554-557.

Brawley formation

Pleistocene: California.

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 2, p. 24.

Breakheart basalt

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 8.

Breault member (of Nicolet River formation) 

Ordovician: Quebec, Canada. 

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Kept. 204, p. 9, 12.

Breeches Lake granite

Devonian or younger: Quebec, Canada.

T. H. Clark in H. C. Cooke and T. H. Clark, 1937, Canada Geol. Survey Mem. 211, 

p. 76.

Breezy Hill limestone member (of Cherokee shale in Kansas; of Senora formation in Oklahoma)

Pennsylvania: Kansas and Oklahoma.

W. G. Pierce and W. H. Courtier, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field 

Conf., p. 17; 1938, Kans. State Geol. Survey Bull. 24, p. 33, 35.
50 GEOLOGIC NAMES OF NORTH AMEKICA

Breien member (of Hell Creek formation) 

Cretaceous: North Dakota. 

W. M. Laird and E. H. Mitchell, 1942, N. Dak. Geol. Surrey Bull. 14, p. 14-15.

Breitenbush series

Eocene (?) to Oligocene: California.

T. P. Thayer, 1936, Jour. Geology, v. 44, no. 6, p. 704, 705, 709 (fig. 2), 713 (fig. 3).

Bremo quartzite

Silurian or younger: Virginia.

G. W. Stose and A. J. Stose, 1948, Am. Jour. Sci., v. 246, no. 7, p. 397-401, 408.

Brent Island limestone

Ordovician(?) : Newfoundland, Canada.

J. K. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 6.

Brew group

Lower Cretaceous: British Columbia, Canada.

S. Duffell and K. C. McTaggart, 1952, Canada Geol. Survey Mem. 262, p. 34-35.

Brian Boru formation

Lower Cretaceous (?) : British Columbia, Canada.

K. E. Sommers, 1955, British Columbia Bur. Mines Ann. Kept. 1954, p. A89-A90.

Brian Head formation

Miocene (?) : Utah.

H. B. Gregory, 1944, Am. Jour. Sci., v. 242, no. 11, p. 591-597.

Briarcliff dolomite

Upper Cambrian: New York.

E. B. Knopf, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2. 1212.

Brickeys member (of Mifflin formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 10, 16.

Bridgerian age

Eocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 10, pi. 1.

Bridgewater conglomerate

Pleistocene: Nova Scotia, Canada.

J. W. Goldthwaite, 1924, Canada Geol. Survey Mem. 140, p. 101-102.

Bridport dolomite

Lower Ordovician (Beekmantownian) : Vermont.

W. M. Cady, 1945, Geol. Soc. America Bull., v. 56, no. 5, p. 524, 545-548.

Bridwell formation

Pliocene, middle: Texas.

G. L. Evans, 1949, W. Tex. Geol. Soc. Guidebook Field Trip 2, Nov. 6-9, p. 6-7.

Brier Hill sandstone

Permian: Pennsylvania.

W. O. Hickok, IV, and F. T. Moyer, 1940, Pa. Geol. Survey, ser 4, Bull. C 26, p. 152.

Brigand Hill limestone

Miocene, lower: Trinidad, British West Indies.

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 204 (table 12) 

[1952].
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED EST 19 3 6-1955 51

Briggs formation 

Permian: Texas.

C. C. Albritton, 1937, Jour. Paleontology, v. 11, no. 1, p. 19; 1938, Geol. Soc. America 

Bull., v. 49, no. 12, pt. 1, p. 1753-1757, pi. 1.

Brigham Hill graywacke

Lower Cambrian: Vermont.

B. C. Jacobs, 1935, (abs.) Geol. Soc. America Proc. 1934, p. 85; [1937], Vt. State 

Geologist 20th Kept., p. 100-101.

Brightseat formation

Paleocene: Maryland and District of Columbia.

R. R. Bennett and G. G. Collins, 1952, Washington Acad. Sci. Jour., v. 42, no. 4, 

p. 114-116.

Brimstone Hill limestone

Pleistocene, lower: St. Kitts, British West Indies.

K. W. Barle, [1924?], Reports on the geology of St. Kitts-Nevis, British West Indies 

and the geology of Anguilla, British West Indies: London, The Crown Agents for 

the Colonies, p. 13.

Brimstone Hill tuffs

Pleistocene, lower: St. Kitts, British West Indies.

K. W. Earle, [1924?], Reports on the geology of St. Kitts-Nevis, British West Indies 

and the geology of Anguilla, British West Indies: London, The Crown Agents for 

the Colonies, p. 7, 11.

Brindson Lake granite

Precambrian: Saskatchewan, Canada.

M. L. Miller, 1951, Saskatchewan Geol. Survey (Precambrian Geology Ser.) Rept. 3, 

p. 17-18.

Brisco glacial substage

Pleistocene (Wisconsin) : Colorado.

Q. D. Singewald, 1950, U. S. Geol. Survey Bull., 955-D, p. 120 [1951].

Brister member (of Big Saline formation) 

Lower Pennsylvanian: Texas. 

F. B. Plummer, 1947, Jour. Geology, v. 55, no. 3, pt. 2, p. 196,198.

Brister Bluff lentil (in Big Saline formation)

See Brister member (of Big Saline formation).

Briton member (of Mfflin formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Cont, figs. 3, 10,16.

Broadalbin passage beds

Upper Cambrian or Lower Ordovician (Cambrovician) : New York.

W. J. Miller, 1911, N. Y. State Mus. Bull. 153, p. 29.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2,

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping,

China, University Press, Natl. Univ. Peking, p. 325-327, 350.

Broad Cove formation

Pennsylvanian: Nova Scotia, Canada.

G. W. H. Norman, 1935, Canada Geol. Survey Mem. 177, p. 48-49.

Broadwater formation

Pleistocene, lower: Nebraska.

C. B. Schultz and T. M. Stout, 1945, Am. Jour. Sci., v. 243, no. 5, p. 232-236.
52 GEOLOGIC NAMES OF NORTH AMERICA

Brock group

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. D. Bateman, 1952, Geol. Assoc. Canada Proc., v. 5, p. 101.

Brocklebank granite

Upper Devonian (?) : Vermont.

C. G. Doll, [1945?], Vt. State Geologist 24th Kept, p. 20-21.

Brockville beds

Cambrian and Ordovician: Ontario, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Pelping, 

China, University Press, Natl. Univ. Peking, p. 407, 424, 425, 550, 551.

Brodhead formation

Lower Mississippian: Kentucky.

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 135-191.

Brodhead member (of Marcellus formation) 

Devonian: Pennsylvania. 

Bradford Willard, 1938, Pa. Geol. Survey, ser. 4, Bull. G 11, p. 17.

Brodhead Creek member (of Marcellus formation) 

See Brodhead member (of Marcellus formation).

Brodhead Creek member (of Tully formation) 

Upper Devonian: Pennsylvania. 

K. B. Stevenson and W. S. Skinner, 1949, Pa. Acad. Sci. Proc., v. 23, p. 30-31.

Broken Jug limestone

Lower Cretaceous (Bisbee group) : New Mexico.

S. G. Lasky, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 5, p. 531, fig. 2.

Bronco volcanics

Cretaceous or lower Tertiary: Arizona.

James Gilluly, 1945, Am. Jour. Sci., v. 243, no. 12, p. 645, 648.

Br0nland Fjord dolomite

Cambrian (?) : North Greenland.

J. C. Troelsen, 1949, Meddel. om Gr0nland, bind 149, nr. 2, p. 13-15, pi. 1.

Brook lentil (in Big Saline formation)

See Brook Ranch member (of Big Saline formation).

Brook Ranch member (of Big Saline formation) 

Lower Pennsylvanian: Texas. 

F. B. Plummer, 1947, Jour. Geology, v. 55, no. 3, pt. 2, p. 196, 197,198.

Brooks Lake glaciation

Pleistocene (Wisconsin) : Alaska.

B. H. Muller in T. L. P6w6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 2, 13 

(table 1).

Broom Creek group

Pennsylvanian or Permian: Wyoming, Colorado, and South Dakota. 

G. E. Condra, B. C. Reed, and O. J. Scherer, 1940, Nebr. Geol. Survey Bull. 13, p. 2, 

4, 19, 45.

Browne glaciation

Pleistocene (pre-Wisconsin) : Alaska.

Clyde Wahrhaftig in T. L. P6w6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 7, 

13 (table 1).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 53

Browning sandstone (in Carbondale formation) 

Pennsylvanian: Illinois. 

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 26, 78.

Brownridge sediments

Precambrian (Keewatin) : Ontario, Canada.

Jack Satterly, 1943, Ontario Dept. Mines Ann. Kept., v. 50, pt. 2, p. 27-28.

Brownridge volcanics

Precambrian (Keewatin) : Ontario, Canada.

Jack Satterly, 1943, Ontario Dept. Mines Ann. Kept., v. 50, pt. 2, p. 28-29.

Browns Point formation 

Miocene: Washington. 

S. L. Glover, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 2022.

Bruja Island dolerite

Miocene, lower: Panama Canal Zone.

[T. F. Thompson], 1943, Panama Canal, Special Eng. Div., 3d Locks Proj., pt. 2,

chap. 3, p. 26. 

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, p. 901, table 2.

Brush Hollow limestone

Cenozoic (probably Quaternary) : Colorado.

W. F. Tanner, [1955], Okla. Acad. Sci. Proc., v. 35 (1954), p. 95.

Brushy Canyon formation

Permian (Guadalupe series) : Texas.

P. B. Bang in R. K. DeFord and E. R. Lloyd, 1940, Am. Assoc. Petroleum Geologists

Bull., v. 24, no. 1, p. 8. 

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 577-579, pi. 2.

Brussels formation

Pleistocene (Sangamon? and Illinoian) : Illinois and Missouri. 

W. W. Rubey, 1952, U. S. Geol. Survey Prof. Paper 218, p. 82-87.

Bruton formation

Pennsylvanian (Virgil) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 79-82.

Bryan sandstone

Eocene (Claiborne) : Texas.

H. B. Stenzel, 1939, Tex. Univ. Bur. Econ. Geology Pub. 3945, pt. 2, p. 853 [1940].

A. A. L. Mathews, 1950, Tex. Eng. Expt. Sta. Research Rept. 14, p. 3, geol. map.

Bryantsville breccia (in Levias member of Ste. Genevieve limestone) 

Mississippian: Indiana.

J. B. Patton, 1949, Ind. Dept. Conserv. Div. Geology Progress Rept. 3, p. 8. 

C. A. Malott, 1952, Stratigraphy of the Ste. Genevieve and Chester formations of 

southern Indiana : Ann Arbor, Mich., The Edwards Letter Shop, p. 9.

Bucaro formation

See Bucarti formation.

Bucaru formation. 

Eocene: Panama. 

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg.

Band 8, Abt. 4a, Heft 29, p. 134 (correlation chart). 

A. A. Olsson, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 235-236.
54 GEOLOGIC NAMES OF NORTH AMERICA

Buck Hill volcanic series

Eocene to Miocene (?) : Texas.

S. S. Goldich and C. L. Seward, 1948, W. Tex. Geol. Soc. [Guidebook] Fall Field Trip, 

p. 13-18.

Buckhorn asphalt

Pennsylvanian: Oklahoma.

H. J. Smith, 1938, The cephalopod fauna of the Buckhorn asphalt: Dept. Geology and 

Paleontology, Chicago Univ., p. 1, 3.

Buckhorn conglomerate

Lower Cretaceous (?): Utah.

W. L. Stokes, 1944, Geol. Soc. America Bull., v. 55, no. 8, p. 958, 965-966.

Buckhorn member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 9.

tBuckingham marl

Miocene, upper: Florida.

W. C. Mansfield, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, pt. 2, p. 1916; 

1939, Fla. Dept. Conserv. Geol. Bull. 18, p. 11-16.

Buckinghorse formation

Lower Cretaceous: British Columbia, Canada.

C. O. Hage, 1944, Canada Geol. Survey Paper 44-30, p. 9-11.

Buckner formation in Mississippi

Buckner member (of Haynesville formation) in Arkansas, Louisiana, and Texas

Upper Jurassic: Subsurface in Arkansas, Louisiana, Mississippi, and Texas.

H. K. Shearer, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 6, p. 724.

W. B. Weeks, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 8, p. 961, 966.

Buck Ridge schist

Age not stated: North Carolina.

C. B. Hunter and P. W. Mattocks, 1936, TVA Div. Geology Bull. 4, p. 14.

Bucks granodiorite

Late Jurassic (?) : California.

Anna Hietanen, 1951, Geol. Soc. American Bull., v. 62, no. 6, pi. 1.

Buckskin schist

Pre-Ordovician(?) : Washington.

E. A. Youngberg and T. L. Wilson, 1952, Econ. Geology, v. 47, no. 1, p. 3.

Buckskinian series

Cretaceous (Mid-Cretacic) : Kansas.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 76, no. 4, p. 304 (chart).

Buck Spring formation 

Cambrian: Wyoming. 

A. B. Shaw, 1954, Wyo. Geol. Assoc. Guidebook 9th Ann. Field Conf., chart 2.

Buelna formation

Lower Cambrian : Sonora, Mexico.

Christina Lochman, 1948, Jour. Paleontology, v. 22, no. 4, p. 455.

G. A. Cooper and A. R. V. Arellano, 1952, Smithsonian Misc. Coll., v. 119, no. 1, 

p. 4-5.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 55

Bufa rhyolite series

Tertiary, lower: Chihuahua, Mexico.

R. T. Donald, 1935, Eng. and Mining Jour., r. 136, no. 12, p. 614.

Buffalo Hump formation

Precambrian (Beltian) : Washington.

lan Campbell and J. S. Loofbourow, Jr., 1946, (abs.) Geol. Soc. America Bull., v. 57, 

no. 12, pt. 2, p. 1250.

Buit Lake granite

Precambrian (post-Grenvllle) : Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Kept. 24, p. 16-17.

Buldir volcanics

Quaternary (?) : Alaska (Aleutian Islands).

R. R. Coats. 1953, U. S. Geol. Survey Bull. 989-A, p. 8, 13-14.

Bulger Lake granite

Precambrian: Manitoba, Canada.

G. C. Milligan and W. F. Take, 1954, Manitoba Dept. Mines and Nat. Res. Mines Br. 

Pub. 53-1, p. 40-41.

Bulitan stage

Paleocene: California.

V. S. Mallory, 1953, (abs.) Jour. Paleontology, v. 27, no. 6, p. 903.

Bulitlan stage.

See Bulitan stage.

Bull Arm felsite member (of Musgravetown group)

Precambrian (upper Proterozoic) or Lower Cambrian: Newfoundland,

Canada. 

A. O. Hayes, 1948, Newfoundland Geol. Survey Bull. 32, p. 16.

Bull Creek sand (in Hell Creek member of Lance formation) 

Cretaceous: South Dakota. 

E. P. Rothrock, 1937, S. Dak. State Geol. Survey Rept. Inv. 28, p. 10.

Bull Creek sandy limestone (in Greenhorn formation) 

Upper Cretaceous: Montana and Wyoming.

M. N. Bramlette and W. W. Rubey in R. C. Moore, 1949, Geol. Soc. America 

Mem. 39, p. 27 (fig. 18).

Bull-Domingo agglomerate 

Age not stated: Colorado.

W. C. Peters, 1953, Econ. Geology, v. 48, no. 7, p. 599-600. 

D. L. Reynolds, 1954, Am. Jour. Sci., v. 252, no. 10, p. 587.

Bullhead group

Lower Cretaceous : British Columbia, Canada.

R. T. D. Wickenden and George Shaw, 1943, Canada Geol. Survey Paper 43-13, p. 2-3.

Bullington member (of Magdalena formation) 

Pennsylvania: New Mexico. 

L. L. Ray and J. F. Smith, Jr., 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 184.

Bullion Canyon volcanics

Tertiary: Utah.

Eugene Callaghan, 1939, Am. Geophys. Union Trans. 20th Ann. Meeting, pt. 3, 

p. 441-446.
56 GEOLOGIC NAMES OF NORTH AMERICA

Bull Mountain andesitic series 

Tertiary: Arizona. 

B. B. Thomas, 1949, Econ. Geology, v. 44, no. 8, p. 667-668.

Bull Shoals Mountain chert bed (in Powell dolomite) 

Lower Ordovician: Arkansas.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 39.

Bumpnose limestone member (of Crystal River limestone) 

Eocene (Jackson) : Florida. 

W. E. Moore, 1955, Fla. Geol. Survey Bull. 37, p. 36-42.

Bunje cycle them

Pennsylvanian: Illinois.

H. R. Wanless, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 9, p. 1764 

(table 2).

Burchards limestone

Middle Ordovician (Chazyan) : Vermont.

Marshall Kay and W. M. Cady, 1947, Science, v. 105, no. 2736, p. 601.

Burica sandstones

Miocene, upper, or Pliocene, lower: Panama and Costa Rica.

R. A. Terry, 1941, Geog. Review, v. 31, no. 3, fig. 5.

A. A. Olsson, 1942, Bull. Am. Paleontology, v. 27, no. 106, p. 173-175 (21-23).

Burin series

Ordovician (?) : Newfoundland, Canada.

R. E. Van Alstine, 1948, Newfoundland Geol. Survey Bull. 23, p. 13.

Burkes Garden limestone member (of Benbolt limestone) 

Middle Ordovician: Virginia. 

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 869-871.

Burleigh granite gneiss

Precambrian: Ontario, Canada.

Jack Satterly and D. F. Hewitt, 1955, Ontario Dept. Mines Geol. Circ. 2, p. 4.

Burlington granite

Devonian: Newfoundland, Canada.

D. M. Baird, 1951, Canada Geol. Survey Paper 51-21, p. 45.

Burnais formation

Silurian and/or Middle Devonian: British Columbia, Canada.

G. G. L. Henderson, 1954,- British Columbia <Dept. Mines Bull. 35, p. 25-27.

Burnam limestone

Upper Ordovician: Texas.

V. E. Barnes, P. E. Cloud, Jr., and Helen Duncan, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 5, p. 1030-1043.

Burnt limestone

Lower Cretaceous (Comanchean) : Texas.

Charles Schuchert, [1943], Stratigraphy of the eastern and central United States: 

New York, John Wiley and Sons, p. 957.

Burnt Canyon breccia

Quaternary: California.

C. R. Alien, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, map sheet 20.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 57

Burnt Canyon limestone

Middle Cambrian: Nevada and Utah.

H. B. Wheeler, 1948, Nev. Univ. Bull., Geology and Mining Ser., no. 47, p. 36-38, 

fig. 5.

Burnt Gulch conglomerate

Miocene or Pliocene: Wyoming.

E. B. Branson and C. C. Branson, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, 

no. 1, p. 143.

Burnt Lava flow

Recent: California.

M. A. Peacock, 1931, Geog. Review, v. 21, no. 2, p. 269-270.

H. A. Powers, 1932, Am. Mineralogist, v. 17, no. 7, p. 272, 275, pi. 1.

Burrego formation

Pennsylvanian (Missouri series) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 65.

Burro Canyon formation

Lower Cretaceous: Colorado, Arizona, and Utah.

W. L. Stokes and D. A. Phoenix, 1948, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 93.

Burroughs beds

Pennsylvanian: Illinois.

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 12 (footnote), 13.

J. R. Ball, 1952, 111. State Geol. Survey Bull, 77, p. 37-38.

Burrows dolomite

Middle Cambrian (Albertan) : Nevada.

H. B. Wheeler, 1940, Nev. Univ. Bull., Geology and Mining Ser., no. 34, p. 12, 27-29.

Burrows shale

Middle Cambrian: Nevada.

Charles Deiss, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 274.

Bursum formation

Permian (Wolfcamp age) : New Mexico.

R. H. Wilpolt and others, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 61.

Burtons Head group

Middle Ordovician( ?) : Newfoundland, Canada.

G. H. Bspenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 10, 14.

Busby quartzite member (of Langston formation) 

Cambrian: Utah and Idaho. 

G. B. Maxey, 1955, Dissert. Abs., v. 15, no. 4, p. 558.

Butcherknife basalt

Tertiary or younger: Texas.

S. S. Goldich and M. A. Elms, 1949, Geol. Soe. America Bull., v. 60, no. 7, p. 1165- 

1168, pi. 1.

Butte Creek beds

Oligocene, upper, or Miocene, lower: Oregon.

W. D. Lowry, 1947, Geol. Soc. Oreg. Country News Letter, v. 13, no. 1, p. 5.

Butterly dolomite

Cambrian (Arbuckle group) : Oklahoma.

C. E. Decker, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1317-1318, table 1.
58 GEOLOGIC NAMES OF NORTH AMERICA

Buttermilk Falls limestone 

Devonian: Pennsylvania. 

Bradford Willard, 1938, Pa. Geol. Survey, ser. 4, Bull. G 11, p. 5, 14, 16.

Butternut shale

Devonian: New York.

G. A. Cooper, 1941, Washington Acad. Sci. Jour., v. 31, no. 5, p. 180-181.

Buttrill Ranch member (of Dagger Flat formation) 

Upper Cambrian: Texas. 

J. L. Wilson, 1954, Jour. Paleontology, v. 28, no. 3, p. 251, 252.

Butts Ranch shale member (of Panoche group) 

Upper Cretaceous: California. 

I. F. Wilson, 1943, Calif. Jour. Mines and Geology, v. 39, no. 2, p. 203-204, 226 (fig. 5).

Buzzard Peak conglomerate member (of Topanga formation) 

Miocene, middle: California.

A. O. Woodford, T. G. Moran, and J. S. Shelton, 1946, Am. Assoc. Petroleum Geologists Bull., v. 30, no. 4, p. 515, 518-519, 529-531.

Byron schist

Age not stated: Maine.

Kern Jackson, 1953, Maine State Geologist Kept. 1951-1952, p. 54-56.

Caballero formation

Mississippian (Kinderhook): New Mexico.

L. R. Laudon and A. L. Bowsher, 1941, Am. Assoc. Petroleum Geologists Bull., 

v. 25, no. 12, p. 2116-2117, 2122-2125.

Caballo Blanco rhyolite tuff 

Tertiary: New Mexico.

F. J. Kuellmer and others, 1953, in N. Mex. Geol. Soc. Guidebook 4th Field Conf., 

p. 50 (geol. map).

Cabaniss group

Pennsylvanian (Des Moines series) : Oklahoma.

M. C. Oakes, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 6, p. 1525-1526.

Cable Canyon sandstone

Upper Ordovician (Cincinnatian) : New Mexico.

V. C. Kelley, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 10, p. 2201 (table).

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 58-59, fig. 4.

Caborca series

Upper Pennsylvanian: Sonora, Mexico.

Charles Schuchert, 1935, Historical geology of the Antillean-Caribbean region: New 

York, John Wiley and Sons, p. 138.

Cabot group

Precambrian: Newfoundland, Canada.

E. R. Rose, 1950, Canada Geol. Survey Paper (Prelim. Map) 50-24.

Cabresto metaquartzite

Precambrian: New Mexico.

P. F. McKinlay, [1955?], N. Mex. State Bur. Mines Min. Res. Bull. 42, p. 8.

Cacalote sandstone

Pre-Cretaceous: Oaxaca, Mexico.

Tomas Barrera, 1946, Gufa geolfigica de Oaxaca: Mexico, Univ. Nac., Inst. Geologfa, 

p. 34, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 59

Cacatro member (of Cipero formation)

Oligocene: Trinidad, British West Indies.

R. M. Stainforth, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 7, 

p. 1300-1301.

Cache Lake gabbro

Precambrian: Quebec, Canada.

B. B. Graham, 1951, Quebec Dept Mines Prelim. Kept. 259, p. 3.

Cachenian stage

Late Cretaceous: California.

P. O. Goudkoff, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, p. 991-993.

Caddo Pool formation

Pennsylvanian (Lampasas) : Texas (subsurface).

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 86.

Cadillac granite

Upper Paleozoic: Maine.

G. H. Chadwick, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 73.

Cadillac group

Precambrian: Quebec, Canada.

H. C. Gunning and J. W. Ambrose, 1937, Canadian Inst. Mining and Metallurgy Trans., 

v. 40, p. 345-346.

Cadotte member (of Peace River formation) 

Lower Cretaceous: Alberta, Canada. 

P. H. McLearn, 1944, Canada Geol. Survey Paper 44-17, p. 2, fig. 1.

Cahuenga beds

Cretaceous (?) : California.

G. J. Neuerburg, 1953, Calif. Dept. Nat. Res., Div. Mines Special Kept. 33, p. 6 

(table 1), 19-20, pi. 1.

Caimito formation

Miocene, upper: Dominican Republic.

C. J. Maury, 1931, Science, v. 73, no. 1880, p. 43.

Caimitoan stage

Miocene, upper: Dominican Republic.

C. J. Maury, 1931, Science, v. 73, no. 1880, p. 43.

Cairn formation

Devonian: Alberta, Canada.

D. J. McLaren, 1955, Canada Geol. Survey Bull. 35, p. 17-19.

Calamity formation 

Quaternary: Texas.

C. C. Albritton, Jr., and Kirk Bryan, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, 

p. 1863; 1939, v. 50, no. 9, p. 1434-1440.

Caldwell Canyon volcanics

Tertiary (post-Oligocene?): Wyoming.

J. D. Love, 1939, Geol. Soc. America Special Paper 20, p. 85-86.

Calef member (of Eliot formation)

Paleozoic (probably Ordovician and Silurian): New Hampshire. 

Jacob Freedman, 1950, Geol. Soc. America Bull., v. 61, no. 5, p. 456.

426779 57 5
60 GEOLOGIC NAMES OF NORTH AMERICA

Calico phase (of Amargosa chaos) 

Post-Miocene (?) : California.

L. F. Noble, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1936; 1941, 

v. 52, no. 7, p. 968-972.

Caliente formation

Miocene, middle: California.

T. W. Dibblee, Jr., in Chester Stock, 1948, Southern Calif. Acad. Sci. Bull., v. 46. 

pt. 2, p. 84.

Call sandstone member (of Panoche group) 

Upper Cretaceous: California.

I. F. Wilson, 1943, Calif. Jour. Mines and Geology, v. 39, no. 2, p. 202-203, 226 

(fig. 5).

Callahan flow

Eecent: California.

M. A. Peacock, 1931, Geog. Review, v. 21, no. 2, p. 269-270.

C. A. Anderson, 1941, Calif. Univ. Dept Geol. Sci. Bull., v. 25, no. 7, p. 370.

Calmar member (of Winterburn formation) 

Devonian: Alberta, Canada (subsurface). 

D. B. Layer, chm., 1950, Am. Soc. Petroleum Geologists Bull., v. 34, no. 9, p. 1815.

Caloso formation

Mississippian (Kinderhook) : New Mexico.

V. C. Kelley and Caswel Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 83, 86-87. 

A. K. Armstrong, 1955, N. Mex. State Bur. Mines Min. Res. Circ. 39, p. 3, 32.

Calumet granodiorite

Eocene, lower: Colorado.

C. H. Behre, Jr., E. F. Osborn, and E. H. Rainwater, 1936, Econ. Geology, v. 31, no. 8, 

p. 786-792.

Calvert ash bed (of Ash Hollow member of Ogallala formation) 

Pliocene: Kansas. 

J. S. Carey and others, 1952, Kans. State Geol. Survey Bull. 96, pt 1, p. 9-11, 24-27.

Calvertian substage

Miocene, middle: Central Atlantic Coastal Plain.

D. S. Malkin, 1953, Jour. Paleontology, v. 27, no. 6, p. 767-768.

Camajan breccias (in Habana formation)

Upper Cretaceous (Maestrichtian) : Cuba.

H. J. MacGillavry, 1937, Geog. Geol. Meded. (Utrecht Univ.) Physiog.-Geol. Reeks, 

no. 14, p. 20-21.

Camargo formation

Upper Ordovician (Richmond) : Tennessee.

C. W. Wilson, Jr., 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 742.

Camelback formation 

Tertiary: Arizona. 

D. A. Holm, 1938, Oil Possibilities of Arizona: Ariz. State Land Dept., p. 32-33.

Cameo member (of Price River formation) 

Upper Cretaceous: Colorado. 

R. G. Young, 1955, Geol. Soc. America Bull., v. 66, no. 2, p. 191.

Cameron beds (of Tolchaco gravels) 

Quaternary: Arizona. 

Parry Reiche, 1937, Am. Jour. Sci., 5th ser., v. 34, no. 200, p. 131-133.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED ESM 9 3 6-19 5 5 61

Cameron Island granite

Precambrian: Saskatchewan, Canada. i 

D. A. W. Blake, 1951, Canada Geol. Survey Paper 51-7, p. 6.

Camino Cielo sandstone member (of Juncal formation)

Eocene, middle: California. >* 

B. M. Page, J. G. Marks, and G. W. Walker, 1951, Am. Assoc. Petroleum Geologists 

Bull., v. 35, no. 8, p. 1751-1752.

Camp member (of Denmark formation)

Middle Ordovician (Trentonian) : New York.

P. A. Chenoweth, 1952, Geol. Soc. America Bull., v. 63, no. 6, p. 530.

Campana diabase and gabbro

Upper Mesozoic or Tertiary, lower: Sonora, Mexico.

W. G. Valentine, 1936, Geol. Soc. America Bull., v. 47, no. 1, p. 81-82.

Campanuladal sandstones and limestones 

Age unknown: North Greenland. 

P. J. Adams and J. W. Cowie, 1953, Meddel. om Gr0nland, bind 111, nr. 7, p. 9, 10.

Camp Davis formation

Pliocene, lower: Wyoming.

A. J. Eardley and others, 1944, Hoback-Gros Ventre-Teton Field Conference [geologic

map]. Privately printed. 

Leland Horberg, Vincent Nelson, and Victor Church, 1949, Geol. Soc. America Bull.,

v. 60, no. 1, p. 187, 190.

Camp Williams unit

Oligocene(?) to Pliocene (?) : Utah.

L. W. Slentz, 1955, Utah Geol. Soc. Guidebook 10, p. 24, 26-27.

Canada Head formation

Middle and Upper Ordovician: Newfoundland, Canada. 

Frederick Beta, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 22-23.

Canas gypsum member (of Yeso formation) 

Permian: New Mexico. 

C. E. Needham and B. L. Bates, 1943, Geol. Soc. America Bull., v. 54, no. 11, p. 1660.

Canas Arriba formation

Oligocene, lower: Puerto Rico.

R. C. Mitchell, 1954, Puerto Rico Univ. Agr. Expt. Sta. Tech. Paper 13, p. 36 

(table 2), 54.

Candler formation

Paleozoic (?) : Virginia.

W. R. Brown, 1951, (abs.) Geol. Soc. America Bull., v. 62, no. 12, pt. 2, p. 1547; 

1953, Ky. Geol. Survey, ser. 9, Special Pub. 1, [p. 9] (fig. 1).

Canebrake conglomerate 

Pliocene: California. 

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 2, p. 23.

Cane Hill member (of Hale formation) 

Pennsylvanian: Arkansas. 

L. G. Henbest, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 8, p. 1988-1939.

Canelo redbeds

Cretaceous (?) : Arizona.

J. H. Peth, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 1, p. 83, flg. 1.
62 GEOLOGIC NAMES OF NORTH AMERICA

Cane Spring formation

Upper Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada : U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Caney Creek member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 159-160.

Caney Point marl member (of White Bluff formation) 

Eocene (Jacksonian) : Arkansas.

H. S. Puri, 1952, Jour. Paleontology, v. 2«, no. 2, p. 202, 209. 

L. J. Wilbert, Jr., 1953, Ark. Div. Geology Bull. 19, p. 56-69.

Canimar formation

Miocene, middle: Cuba.

Jorge Brodermann, 1945, Soc. Cubana Ingenieros Rev., v. 42, no. 1, p. 133, chart

facing p. 144. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 295-296.

Canisteo shale member (of Perrysburg formation) 

Upper Devonian: New York.

J. F. Pepper and Wallace de Witt, Jr., 1951, U. S. Geol. Survey Oil and Gas Inv. 

Chart OC 45.

Canjilon till

Quaternary: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103; 1938, Jour. 

Geology, v. 46, no. 7, p. 937, 959.

Cano member (of Mesaverde formation) 

Upper Cretaceous: New Mexico. 

C. E. Stearns, 1953, Geol. Soc. America Bull., v. 64, no. 4, p. 463, 466, pi. 1.

Canoas siltstone member (of Kreyenhagen shale) 

Eocene: California.

B. L. Clark, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 189 [preprint

1941]. 

J. A. Cushman and S. S. Siegfus, 1942, San Diego Soc. Nat. History Trans., v. 9,

no. 34, p. 391.

Canoe Brook formation

Lower Cambrian: Nova Scotia, Canada.

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 39-40.

Canones andesite

Quaternary: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103; 1938, Jour. Geology, v. 46, no. 7, p. 937, 959.

Canso series

Pennsylvanian: Nova Scotia, Canada.

W. A. Bell, [1938], Canada Geol. Survey Mem. 215, p. 5.

Cantarranas formation

Cretaceous: Honduras.

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 27.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 63

Cantinas sandstone

Upper Cretaceous: California.

N. L. Taliaferro, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 132 [preprint 1941].

Canutillo formation 

Devonian: Texas.

L. A. Nelson, 1937, Colo. Univ. Studies, v. 25, no. 1, p. 89 ; 1940, Am. Assoe. Petroleum Geologists Bull., v. 24, no. 1, p. 164.

Canyon basalt

Miocene and/or Pliocene: Wyoming.

A. D. Howard, 1937, Geol. Soe. America Special Paper 6, p. 36-39, 78.

Canyon sandstone (in Fort Creek formation)

Upper Devonian: Northwest Territories (Mackenzie), Canada. 

J. S. Stewart, 1945, Canada Geol. Survey Paper 45-29, p. 20.

Canyon sandstone member (of Gething formation) 

Lower Cretaceous: British Columbia, Canada. 

P. H. McLearn and E. J. W. Irish, 1944, Canada Geol. Survey Paper 44-15, p. 8.

Canyon series (of Eleonore Bay formation)

Precambrian and (?) Lower Cambrian (Greenlandian) : Northeast Greenland. 

Erdhart Frankl, 1953, Meddel. om Gr0nland, bind 113, nr. 4, p. 16, 80, 82, 155.

Canyon Fjord formation

Middle Pennsylvanian: Northwest Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 65-66.

Canyon Springs sandstone member (of Sundance formation) 

Upper Jurassic: Wyoming and South Dakota. 

R. M. Imlay, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 2, p. 247-251.

Capdevila formation

Eocene, lower: Cuba.

R. H. Palmer, 1938, Field guide to geological excursion in Cuba: Habana, Cuba,

Oarasa y Cla, p. [16]. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 227-229.

Cape limestone

Upper Ordovician: Illinois and Missouri.

A. M. Gutstadt, 1954, Dissert. Abs., v. 14, no. 10, p. 1683.

Cape series

Precambrian: Miquelon Island, French North America.

Edgar Aubert de la Rile, 1941, Expose sur la geologic et les gltes mine'raux des lies 

Saint-Pierre et Miquelon: St. Pierre, Imp. du Govt., p. 9.

Cape Anguille sandstone

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1938, Newfoundland Geol. Surrey Bull. 12, p. 11.

Cape Baird limestone

Ordovician: Northwest Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Grjtaland, bind 149, nr. 7, p. 59.
64 GEOLOGIC NAMES OF NORTH AMERICA

Cape Biot formation

Upper Triassic: Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 104, 111; nr. 2, 

p. 249-250.

Cape Brown and Hurry Inlet series

Permian or Lower Triassic: East Greenland.

Otto Nordenskj51d, 1907, Meddel. om Gr0nland, hefte 28, pt. 5, p. 178-184.

Cape Brule granite

Devonian: Newfoundland, Canada.

D. M. Baird, 1951, Canada Geol. Survey Paper 51-21, p. 49-52.

Cape Bull series

See Kap Bull series.

Cape Calhoun series

Middle and Upper Ordovician (Black River-Richmond) : North Greenland. 

G. T. Troedsson, 1926, Meddel. om Gr0nland, bind 71, nr. 1, p. 12, 111-115.

Cape Clay formation

Lower Ordovician (Upper Ozarkian) : North Greenland.

Christian Poulsen, 1927, Meddel. om Gr0nland, bind 70, nr. 2, p. 245, 341-342.

Cape Columbia group

Precambrian or Paleozoic: Northwest Territories (Ellesmere Island).

Canada. 

R. G. Blackadar, 1954, Canada Geol. Survey Paper 53-10, p. 8, 9.

Cape Dalton formation

Eocene: East Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 262.

Cape Edward Holm complex

Tertiary: Southeast Greenland.

L. R. Wager and W. A. Deer in L. R. Wager, 1937, Geog. Jour., v. 90, no. 5, p. 416.

L. R. Wager, 1947, Meddel. om Gr0nland, bind 134, nr. 5, p. 41-44, 46, pi. 6.

Cape Fear coquina

Pleistocene: North Carolina.

B. W. Wells, 1944, Elisha Mitchell Sci. iSoc. Jour., v. 60, no. 2, p. 132.

Cape Fletcher series

Paleozoic: Northeast Greenland.

Otto NordenskjOld, 1907, Meddel. om Gr0nland, hefte 28, pt. 5, p. 184-185, 196-208.

Cape Franklin conglomerate

See Kap Franklin conglomerate.

Cape Frederick VII formation

Cambrian (Lower Ozarkian?) : North Greenland.

Christian Poulsen, 1927, Meddel. om Gr0nland, bind 70, nr. 2, p. 244, 341.

Cape Graah formation

Devonian: Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 242-243.

Cape Greg gneisses

Lower Paleozoic (Caledonian?) : Northeast Greenland. 

E. H. Kranck, 1935, Meddel. om Gr0nland, bind 95, nr. 7, p. 48-57.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 65

Cape Gustav Holm series

See Kap Gustav Holm series.

Cape Hamburg formation

Lower Cretaceous (Neocomian) : Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 256-257.

Cape Ingersoll dolomite

Precambrian or Cambrian (Eo-Cambrian) : North Greenland, and Northwest

Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 35-37.

Cape Kent formation

Lower Cambrian: North Greenland.

Christian Poulsen, 1927, Meddel. om Gr0nland, bind 70, nr. 2, p. 242, 339-340.

Cape Kolthoff series

See Kap Kolthoff series.

Cape Leiper dolomite

Precambrian or Cambrian (Eo-Cambrian) : North Greenland, and Northwest

Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 35.

Cape Leslie sandstone

Jurassic: East Greenland.

Bdvard Bay, 1895, Meddel. om Gr0nland, hefte 19, pt. 6, p. 162-163; pt. 9, p. 264.

Otto Nordenskjold, 1907, Meddel. om Gr0nland, hefte 28, pt. 5, p. 188-189.

Cape Maurer formation

Upper Jurassic (Portlandian) : Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 256.

Cape Oswald formation

Precambrian or Lower Cambrian: Northeast Greenland.

Christian Poulsen, 1930, Meddel. om Gr0nland, bind 74, nr. 12, p. 300-305.

Cape Parry alkaline complex

Tertiary (?) : Northeast Greenland.

G. W. Tyrell, 1932, Geol. Mag., v. 69, p. 520, 526-527.

Cape Rawson beds

Precambrian (Huronian?) : North Greenland, and Northwest Territories

(Ellesmere Island), Canada.

W. H. Feilden and C. B. defiance, 1878, Geol. Soc. London Quart. Jour., v. 34, 

p. 556, pi. 24.

Cape Rosier beds

Cambrian and Ordovician: Quebec, Canada.

E. M. Kindle, 1938, Bull. Am. Paleontology, v. 24, no. 82, p. 46 (12).

Cape Rouge series

Mississippian: Newfoundland, Canada.

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 14.

Oape Russell member (of Cape Wood formation)

Middle Cambrian: North Greenland, and Northwest Territories (Eltesmere

Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 43-46.
66 GEOLOGIC NAMES OF NORTH AMERICA

Cape St. John group

Ordovician: Newfoundland, Canada.

D. M. Baird, 1951, Canada Geol. Survey Paper 51-21, p. 31-37.

Cape San Juan limestone

Upper Cretaceous : Puerto Rico.

C. J. Maury, 1929, Science, new ser., v. 70, no. 1825, p. 609.

Cape Schuchert formation

Middle Silurian (upper Llandovery) : North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 237-238.

Cape Spencer flow

Triassic: Nova Scotia, Canada.

Sydney Powers and A. C. Lane, 1916, Am. Inst. Mining Engineers Trans., v. 54, p. 446.

Cape Stewart formation

Upper Triassic (Rhaetic) : Northeast Greenland.

Alfred Rosenkrantz in Lauge Koch, 1929, Meddel. om Grjzlnland, bind 73, afd. 2, nr. 1

p. 143. 

Lauge Koch, 1929, Meddel. om Grjfcland, bind' 73, afd. 2, nr. 2, p. 251-252.

Cape Stosch formation

Permian: Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 115-118.

Cape Tyson formation

Middle Silurian (Tarannon-Wenlock) : North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 239-241.

Cape Wardlaw complex

Pre-Devonian: Northeast Greenland.

Arne Noe-Nygaard, 1934, Meddel. om Gr0nland, bind 103, nr. 1, p. 14-16.

Cape Weber formation

Middle or Upper Ordovician (Black River or Richmond?) : Northeast Greenland. 

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 22-23.

Cape Webster formation

Middle Ordovician (Chazyan?) : North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 233.

Cape With formation

Lower Jurassic (?) : Northwest Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland. bind 149, nr. 7, p. 75.

Cape Wood formation

Middle Cambrian: North Greenland.

Christian Poulsen, 1927, Meddel. om Gr0nland, bind 70, nr. 2, p. 242-243, 340.

Capilano group

Recent: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply 

Paper 322, p. 11, map.

Capisisit Lake granite

Precambrian: Quebec, Canada.

J. E. Gilbert, 1950, Canadian Mining Jour., v. 71, no. 5, p. 76; 1951, Quebec Dept. 

Mines Geol. Kept. 48, p. 31-32.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 67

Capita shale member (of Domengine formation) 

Eocene: California. 

M. B. Payne, 1951, Calif. Dept. Nat. Res., Div. Mines Special Kept. 9, p. 15.

Caplin Cove member (of Logy formation) 

Frecambrian: Newfoundland, Canada. 

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 13.

"Caprinula" limestone

See Titanosarcolites limestone. 

Capsisit Lake granite

See Capisisit Lake granite.

Capta zone (in Headland gneiss)

Precambrian: Newfoundland, Canada.

J. O. Fuller, 3 941, Newfoundland Geol. Survey Bull. 15, p. 11-12.

Capulin basalts

Recent: New Mexico.

Helen Stobbe, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt. 2, p. 1354-1355. 

R. F. Collins, 1949, Geo. Soc. America Bull., v. 60, no. 6, p. 1023,1031, pi. 1.

Caraba facies (of Caimito formation)

Oligocene, upper, to Miocene, lower: Panama Canal Zone. 

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, p. 901.

Caracol formation

Upper Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1937, Geol. Soc. America Bull., v. 48, no. 5, p. 616-620.

Carbon Butte shales

Precambrian (Kwaguntan) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 113.

Carbonear formation

Precambrian (Upper Proterozoic) : Newfoundland, Canada. 

R. D. Hutchinson, 1954, Canada Geol. Survey Mem. 275, p. 12-13.

Carbonera formation

Lower Cretaceous: Durango, Mexico.

R. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 124.

Carcajou series

Upper Devonian: Northwest Territories (Mackenzie) and Yukon, Canada. 

G. S. Hume and T. A. Link, 1945, Canada Geol. Survey Paper 45-16, p. 33.

Cardenas lava series

Precambrian: Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 110-111.

Cardenasan series

See Cardenas lava series.

Cardigan gneiss

Precambrian (?): Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 14-20.
68 GEOLOGIC NAMES OF NORTH AMEKICA

Careaga sand or sandstone 

Pliocene, upper: California.

C. R. Canfleld, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 1, p. 54. 

S. G. Wissler and F. E. Dreyer, 1943, Calif. Dept Nat. Res., Div. Mines Bull. 118, pt 2, 

p. 235 [preprint 1941].

Careage sand 

Carega sand

See Careaga sand or sandstone.

Caribou complex

Precambrian: Ontario, Canada.

G. M. Friedman, 1953, (abs.) Geol. Soc. America Bull., v. 64, no. 12, pt. 2, p. 1425.

Caribou Hills glaciation

Pleistocene (pre-Wisconsin) : Alaska.

D. B. Krinsley in T. L. Pewfi and others, 1953, U. S. Geol. Survey Cire. 289, p. 5, 13 

(table 1).

Caridad conglomerate

Age not stated: Sonora, Mexico.

W. R. Wade and Alfred Wandtke, 1920, Am. Inst. Mining and Metall. Engineers 

Trans., v. 63, p. 383.

Caridad quartz monzonite

Age not stated: Sonora, Mexico.

W. R. Wade and Alfred Wandtke, 1920, Am. Inst. Mining and Metall. Engineers Trans., 

v. 63, p. 383.

Carillon limestone

Cambrian and Ordovician: Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 415, 424, 425, 550, 551.

Carimona member (of Platteville formation) 

Middle Ordovician: Minnesota. 

M. P. Weiss, 1955, Jour. Paleontology, v. 29, no. 5, p. 759-763.

Carl sandstone member (of Shenango formation)

Mississippian (middle Meramec or younger) : Pennsylvania.

P. A. Dickey, R. E. Sherrill, and L. S. Matteson, 1943, Pa. Geol. Survey, ser. 4, Bull. 

M 25, p. 16.

Carlisle Center formation

Lower or Middle Devonian: New York.

Winifred Goldring and R. H. Flower, 1944, Am. Jour. Sci., v. 242, no. 6, p. 340.

Carlotta formation

Pliocene to Pleistocene: California.

B. A. Ogle, 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 164, p. 13 (fig. 3), 35-39, pi. 1.

Carlsbad formation

Upper Ordovician: Ontario, Canada.

A. E. Wilson, 1937, Royal Soc. Canada Trans., ser. 3, v. 31, sec. 4, p. 46, 57; 

1940, Canada Geol. Survey Map 588A.

Carlton slate

Precambrian: Minnesota.

A. E. Sandberg, 1938, Geol. Soc. America Bull., v. 49, no. 5, p. 798, 810.

F. F. Grout and others, 1951, Geol. Soc. America Bull., v. 62, no. 9, p. 1021, 1036.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 69

Carman quartzite

Middle Ordovician (Chazyan) : Vermont, and Quebec, Canada. 

Marshall Kay, 1945 (abs.) Geol. Soc. America Bull., v. 56, no. 12, pt. 2, p. 1172.

Carmel River member (of B6cancour River formation) 

Ordovician: Quebec, Canada. 

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Kept. 204, p. 14.

Carmen [formation]

Eocene (Jackson) : Vera Cruz, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart.

Carmen formation

Pliocene, middle: Baja California, Mexico.

I. F. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p. 1768. 

Carnahan Bayou member (of Fleming formation)

Miocene: Louisiana.

N. H. Fisk, 1940, La. ,Dept. Conserv. Geol. Bull. 18, p. 118, 154-158

Carnavon member (of Mount Head formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Carolinas limestone

Pliocene or Pleistocene: Mariana Islands (Tinian).

Risaburo Tayama, 1936, Geomorphology, geology, and coral reefs of Tinian Island 

together with Aguijan and Naftan Islands : TOhoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no. 21, p. 21-26, 31 [English translation in 

library of TJ. S. Geol. Survey, p. 20-25, 31-32] ; 1952, Coral reefs in the South 

Seas : Japan Hydrog. Office Bull., v. 11, table 4.

Caroline limestone

Pleistocene: Caroline Islands (Fais).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. Soc. 

Japan Jour., v. 46, no. 549, p. 347 (correlation table) [English translation in library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan Hydrog. 

Office Bull., v. 11, p. 68, table 5 [English translation in library of U. S. Geol. Survey, p. 82]. 

Carpenter limestone member (of Grayson formation)

Upper Cretaceous: Texas.

Elliot Gillerman, 1953, U. S. Geol. Survey Bull. 987, p. 27, 29, 30.

Carpenter sediments

Precambrian (Keewatin) : Ontario, Canada.

G. It. Fletcher and T. N. Irvine, 1954, Ontario Dept. Mines Ann. Rept., v. 63, pt. 5, 

p. 15.

Carpenter volcanics

Precambrian (Keewatin) : Ontario, Canada.

G. L. Fletcher and T. N. Irvine, 1954, Ontario Dept. Mines Ann. Rept, v. 63, pt. 5, 

p. 15.

Carriacou limestone

Miocene, lower (Aquitanian) : The Grenadines (Carriacou), British West

Indies. 

E. Lehner, 1935, Artesian water supply of Carriacou : St. Georges, Grenada, Govt.

Printing Office, p. 5, geol. map. 

C. T. Trechmann, 1935, Geol. Mag., v. 72, no, 12, p. 530, 532, 533, 539, 558,
70 GEOLOGIC NAMES OF NORTH AMERICA

Carrizozo lava flow

Recent: New Mexico.

J. E. Alien, 1951, in Roswell Geol. Soc. Guidebook 5th Field Conf., p. [8],

Carson conglomerate

Tertiary, lower: New Mexico.

Evan Just, 1937, N. Mex. School Mines Bull, 13, p. 31, 48-49.

Carsonville granite

Precambrian: Virginia.

A. J. Stose, 1942 (abs.) Am. Geophys. Union Trans. 23d Ann. Meeting, pt. 2, p. 342.

Carthew member (of Altyn formation)

Precambrian (Belt) : Alberta, Canada and Montana.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p. 1883- 

1884.

Casa Larga marls 

Eocene, upper: Panama Canal Zone.

[T. F. Thompson], 1943, Panama Canal, Special Eng. Div., 3d Locks Proj., pt. 2, 

chap. 3, p. 8.

Cascajo conglomerate member (of San Joaquin formation) 

Pliocene, upper: California.

W. P. Woodring, Ralph Stewart, and R. W. Richards, 1940, U. S. Geol. Survey Prof. 

Paper 195, p. 49-54 [1941].

Cascan formation

Pleistocene: Oregon.

E. T. Hodge, 1938, Geol. Soc. America Bull., v. 49, no. 6, p. 879-886.

Casitas formation

Pleistocene: California.

J. E. Upson, 1951, D. S. Geol. Survey Water-Supply Paper 1108, p. 21-23.

Cassa group

Permian: Wyoming, Colorado, and South Dakota.

G. E. Condra, E. C. Reed, and O. J. Scherer, 1940, Nebr. Geol. Survey Bull. 13, p. 2, 

4, 19, 45.

Cassadaga stage

Upper Devonian (Chautauquan) : New York.

G. A. Cooper and others, 1942, Geol. Soc. America Bull., v. 53, no. 12, pt. 1, p. 1734, 

Chart 4.

Cassel Hill member (of Catahoula formation) 

Miocene: Louisiana. 

W. D. Chawner, 1936, La. Dept. Conserv. Geol. Bull. 9, p. 121-122.

Cass Fjord formation

Lower Ordovician (Upper Ozarkian) : North Greenland. 

Christian Poulsen, 1927, Meddel. om Gr0nland, bind 70, nr. 2, p. 244, 341.

Castaic formation

Miocene: California.

J. C. Crowell, 1955, Calif. Dept. Nat. Res., Div. Mines Bull, 170, map sheet 7.

Castalia sand

Pleistocene: North Carolina.

B. W, Wells, 1944, Elisba Mitchell Sci. Soc. Jour., v. 60, no. 2, p. 130-131.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 71

Castiyo limestone

See Kasutesyo limestone. 

Castle rhyolite

Tertiary: Wyoming.

K. E. Wilcox, 1944, Geol. Soc. America Bull., v. 55, no. 9, p. 1053.

Castor Creek member (of Fleming formation) 

Miocene: Louisiana. 

H. N. Fisk, 1940, La. Dept. Conserv. Geol. Bull. 18, p. 118, 164-168.

Castro shale member (of Alhambra formation) 

Eocene, upper: California. 

C. E. Weaver, 1953, Wash. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 53-54.

Cataract basalt

Tertiary: Wyoming.

R. E. Wilcox, 1944, Geol. Soc. America Bull., v. 55, no. 9, p. 1055-1056.

Cataract Falls sandstone (in Ste. Genevieve formation) 

Mississippian: Indiana. 

C. A. Malott, 1945, (abs.) Ind. Acad. Sci. Proc., v. 55, p. 77 [1946].

Cathedral Valley agglomerate

Tertiary, upper: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Kept. 2, pt. 2, p. 12.

Cativa marl (in Gatun formation) 

Miocene, middle: Panama. 

H. N. Coryell and Suzanne Fields, 1937, Am. Mus. Novitates no. 956, p. 3.

Cat Mountain rhyolite 

Tertiary: Arizona. 

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 729-731.

Caughnawaga member (of Laval formation)

Middle Ordovician (Chazy) : Quebec, Canada.

T. H. Clark, 1944, Royal Soc. Canada Trans., sec. 4, v. 38, p. 29.

Cave Creek formation 

Cenozoic: Arizona. 

H. E. Enlows, 1955, Geol. Soc. America Bull., v. 66, no. 10, p. 1217.

Cayes limestone member (of Saint Bartholomew formation) 

Eocene, middle: St. Bartholomew, French West Indies. 

R. A. Christman, 1953, Geol. Soc. America Bull., v. 64, no. 1, p. 70.

Cayuse limestone

Precambrian (Belt series) : Montana.

Charles Deiss, 1943, Geol. Soc. America Bull., v. 54, no. 2, p. 213, 215-216.

Cebada fine-grained member (of Careaga sandstone) 

Pliocene, upper: California.

W. P. Woodring, M. N. Bramlette, and K. E. Lohman, 1943, Am. Assoc. Petroleum 

Geologists Bull., v. 27, no. 10, p. 1356-1358.

Cedar City tongue (of Kayenta formation) 

Jurassic (?) : Utah.

Paul Averitt and others, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 12, 

p. 2521-2522.
72 GEOLOGIC NAMES OF NORTH AMERICA

Cedar Keys limestone

Paleocene: Florida (subsurface).

W. S. Cole, 1944, Fla. Geol. Survey Bull. 26, p. 27-28.

Cedar Mountain formation

Lower Cretaceous: Utah.

W. L. Stokes, 1944, Geol. Soc. America Bull., v. 55, no. 8, p. 966-967.

Cedar Mountain group

Lower Cretaceous: Utah and Colorado.

W. L. Stokes, 1944, Geol. Soc. America Bull., v. 55, no. 8, p. 989, fig. 2.

Cedar Rapids granite

Precambrian (post-Keewatin) : Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Kept. 24, p. 11,13.

Cedral formation

Miocene, upper: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart.

Manuel Alvarez, Jr., 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2, p. 376.

Cedros beds

Pliocene and Pleistocene: Trinidad, British West Indies. 

C. J. Maury, 1925, Bull. Am. Paleontology, v. 10, no. 42, p. 169 (17). 

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Port Worth, Tex., 

J. P. MacGowan, p. 487-488.

Cedros Point beds 

See Cedros beds.

Celeron granite

Precambrian (post-Keewatin) : Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Kept. 24, p. 13-14.

Centerpoint volcanic facies (of Eagleford formation) 

Cretaceous: Arkansas, Louisiana, and Texas.

R. T. Hazzard, 1939, Shreveport Geol. Soc. Guidebook 14th Ann. Field Trip, p. 143,

147-148.

Central series

Precambrian: Ontario, Canada.

L. C. Graton and others, 1933, Canadian Inst. Mining and Metallurgy Trans., v. 36, 

p. 3.

Central Fee unit (in Sycamore Canyon member of Puente formation) 

Miocene, upper: California. 

C. J. Kundert, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 18, p. 6-7.

Central Plain tuff formation

Oligocene: Antigua, British West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1594, 

1596.

Centre Hill complex

Precambrian: Ontario, Canada.

Jack Satterly, 1952, Ontario Dept. Mines Ann, Rept., v. 60, pt. 8, p. 19.

Centre Lake leuco-granite gneiss 

Precambrian: Ontario, Canada. 

Jack Satterly and D. F. Hewitt, 1955, Ontario Dept. Mines Geol. Circ. 2, p. 5.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 73

Centrum limestone

Ordovicion and Silurian: North Greenland.

P. J. Adams and J. W. Cowie, 1953, Meddel. om Gr0nland, bind 111, nr. 7, p. 9, 

12-14, 17.

Cerbat complex

Precambrian (Archean) : Arizona.

B. B. Thomas, 1949, Bcon. Geology, v. 44, no. 8, p. 666.

Cerro Gigante basalt

Miocene, lower: Panama.

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, p. 898 (correlation table), 901.

Cerro Ladron facies (of M Doctor limestone) 

Lower Cretaceous: Queretaro, Mexico.

B. W. Wilson, J. P. Hernandez M., and E. Meave T., 1955, Soc. Geol. Mexicana Bol., 

tomo 18, no. 1, p. 5, fig. 2.

Cerro Prieto formation

Lower Cambrian: Sonora, Mexico.

G. A. Cooper and A. R. V. Arellano, 1952, Smithsonian Misc. Coll., v. 119, no. 1, p. 5.

Cerros shale member (of Lodo formation) 

Paleocene and Eocene: California.

R. T. White, 1938, (abs.) Geol. Soc. America Proc. 19"37, p. 257; 1940, Am. Assoc. 

Petroleum Geologists Bull., v. 24, no. 10, p. 1738.

Cerrotejonian stage

Pliocene, early: California.

D. E. Savage, 1955, Calif. Univ. Pubs. Geol. Sd., v. 31, no. 1, p. 11-19.

Cerro Topila beds

Tertiary (Neogene) : Tamaulipas and Vera Cruz, Mexico. 

Walther Staub, 1928, Bclogae Geologicae Helvetiae, v. 21, no. 1, p. 123-124.

Chacha limestone

Pleistocene: Mariana Islands (Saipan).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation 

in library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan 

Hydrog. Office Bull., v. 11, p. 57-58, table 4 [English translation in library of 

U. S. Geol. Survey, p. 08-69.]

Chadbourne series

Precambrian: Quebec, Canada.

H. J. Conolly and R. C. Hart, 1936, Canadian Inst. Mining and Metallurgy Trans., 

v. 39, p. 11.

Chadronian age

Oligocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 11, pi. 1.

Chagres alluvium

Pleistocene and Recent: Panama and Panama Canal Zone. 

S. M. Jones, 1950, Geol. Soc., America Bull., v. 61, no. 9, p. 898 (correlation table), 

904.

Chalk Hills member (of Catahoula formation) 

Miocene: Louisiana. 

W. D. Chawner, 1936, La. Dept. Conserv. Geol. Bull. 9, p. 122-124.
74 GEOLOGIC NAMES OF NORTH AMERICA

Chalma shale (of Chicontepec formation) 

Eocene, lower: Tamaulipas, Mexico. 

Arnold Helm, 1940, Eclogae Geologicae Helvetiae, v. 33, no. 2, p. 330.

Chalmers quartz monzonite 

Tertiary: Colorado. 

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 81, 84-86.

Chalybeate limestone member (of Porters Creek clay formation) 

Paleocene (Midway group) : Mississippi.

F. S. MacNeil, 1946, U. S. Geol. Survey Strategic Minerals Inv. Prelim. Kept. 3-195, 

p. 9.

Chambless limestone

Lower Cambrian: California.

J. C. Hazzard, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 241.

Champion revolution

Precambrian: Michigan.

W. A. Seaman In A. K. Snelgrove, W. A. Seaman, and V. L. Ayres, 1944, Mich. Dept. 

Conserv. Geol. Survey Div. Progress Kept. 10, p. 13-14, table 1.

Ghana member (of Pecatonica formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3,12.

Chance Harbour granite

Post middle Carboniferous: New Brunswick, Canada. 

H. R. Belyea, 1944, Acadian Naturalist, v. 1, no. 3, p. 88.

Chances Branch dolomite member (of Maynardville limestone) 

Upper Cambrian: Virginia.

R. L. Miller and J. O. Fuller, 1947, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 76.

Chandler formation

Lower and Upper Cretaceous: Alaska.

George Gryc. W. VV. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 164.

Chandler Falls member (of Trenton formation) 

Middle Ordovician: Michigan.

R. C. Hussey, 1952, Mich. Dept. Conserv. Geol. Survey Div. Pub. 46, Geol. Ser. 39, 

p. 13-14.

Chaney Ranch sandstone formation 

Eocene: California. 

M. B. Payne, 1951, Calif. Dept. Nat. Res.. Div. Mines Special Kept. 9, p. 15-18.

Chapatan formation

Eocene: Vera Cruz, Mexico.

G. P. Salas, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 8, p. 1393.

Chapin Wash formation

Pliocene, lower: Arizona.

S. G. Lasky and B. N. Webber, 1949, U. S. Geol. Survey Bull. 961, p. 23-34.

Chapman Gulch glaciation

Pleistocene (Cochrane?) : Colorado.

R. L. Nelson, 1954, Jour. Geology, v. 62, no. 4, p. 333-334.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 75

Chapman Ridge sandstone

Middle Ordovician: Tennessee.

J. M. Cattermole, 1955, U. S. Geol. Survey Geol. Quadrangle Map GQ 76.

Chapparal sandstone (in Saavedra member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11.

Charco Azul formation

Pliocene: Panama and Costa Rica.

R. A. Terry, 1941, Geog. Review, v. 31, no. 3, p. 382, fig. 5.

A. A. Olsson, 1942, Bull. Am. Paleontology, v. 27, no. 106, p. 164-167 (12-15).

Charco Redondo limestone 

Eocene, middle: Cuba.

W. P. Woodring and S. N. Daviess, 1944, U. S. Geol. Survey Bull, 935-G, p. 367-374. 

W. P. Woodring, 1952, Jour. Paleontology, v. 26, no. 1, p. 60.

Charcot Bay sandstone

See Charcotbucht sandstone.

Charcotbucht sandstone

Upper Jurassic (Oxfordian?) : East Greenland.

Hermann Aldinger, 1935, Meddel. om Gr0nland, bind 99, nr. 1, p. 54-57, pL 3.

Charles formation

Mississippian: Subsurface in Montana and North Dakota.

O. A. Seager, 1942, Am. Assoc. Petroleum Geologists Bull., V. 26, no. 5, p. 863, 864.

Charlie Lake formation

Triassic: British Columbia, Canada.

L. M. Clark, 1954, (abs.) Alberta Soc. Petroleum Geologists News Bull., v. 2, no. 6, p. 5.

Charlotte group

Ordovician (?) : New Brunswick, Canada.

F. J. Alcock, 1946, Canada Geol. Survey Paper (Prelim. Map) 46-3.

Charlottesville formation 

Age not stated: Virginia. 

W. A. Nelson, 1949, (abs.) Va. Acad. Sci. Proc. 1948-1949, p. 140.

Charney formation

Lower Cambrian: Quebec, Canada.

Franco Rasetti, 1946, Geol. Soc. America Bull., v. 57, no. 7, p. 698-700.

Charter member (of Mt. Simon formation) 

Upper Cambrian: Illinois (subsurface). 

J. S. Templeton, Jr., 1950, 111. Acad. Sci. Trans., v. 43, p. 156.

Chase Channel formation

Pleistocene (Nebraskan and Aftonian) : Kansas.

R. C. Moore, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 7, p. 1278.

O. S. Fent, 1950, Kans. State Geol. Survey Bull. 85, p. 64-65.

Chatcha limestone

See Chacha limestone.

426779 57-
76 GEOLOGIC NAMES OF NORTH AMERICA

Chatham limestone

Cambrian and Ordovician: Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 415, 421, 424, 425, 550, 551.

Chatton Bay sandstone

Jurassic: East Greenland. 

L. F. Spath, 1936, Meddel. om Gr0nland, bind 99, nr. 3, p. 10.

Chaudiere formation

Paleocene: Trinidad, British West Indies. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 529.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 39, 41.

Chavez member (o'f Morrison formation) 

Jurassic: New Mexico.

C. T. Smith, 1951, in N. Mex. Geol. Soc. Guidebook 2d Field Conf., p. 13, 38; 

1954, N. Mex. Bur. Mines Min. Res. Bull. 31, p. 15-16.

Chemard Lake lignite lentil (of Naborton formation) 

Paleocene (Midway) : Louisiana.

D. P. Meagher and L. C. Aycock, 1942, La. Dept. Conserv. Geol. Pamph. 3, p. 12-16. 

G. B. Murray, 1948, La. Dept. Conserv. Geol. Bull. 25, p. 98-100.

Chenango sandstone

Devonian: New York.

G. A. Cooper, 1941, Washington Acad. Sci. Jour., v. 31, no. 5, p. 180.

Cheneyan stage

Paleocene: California.

P. P. Goudkoff, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, p. 967-982.

Cherry Canyon formation

Permian (Guadalupe series) : Texas.

P. B. King in R. K. DeFord and B. R. Lloyd, 1940, Am. Assoc. Petroleum Geologists

Bull., v. 24, no. 1, p. 8. 

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 579-580, pi. 2.

Cherry Creek member (of Venango formation) 

Upper Devonian (Conewangan) : New York. 

I. H. Tesmer, 1954, Dissert. Abs., v. 14, no. 12, p. 2317, 2318.

Cherryville quartz monzonite

Devonian (?) : North Carolina and South Carolina.

W. R. Griffltts and W. C. Overstreet, 1952, Am. Jour. Sci., v. 250, no. 11, p. 783-786.

Chert Hill formation

Upper Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1950, Asociaci6n Venezolano de Geologfa, Mineria y Petr61eo Bol., 

tomo 2, no. 1, p. 61.

Chertsey facies (of Morin anorthosite) 

Precambrian: Quebec, Canada. 

F. F. Osborne, 1949, Royal Soc. Canada Trans., sec. 4, v. 43, p. 104.

Chestnut Ridge sandstone

Lower Mississippian (Kinderhook) : Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Rept. 126, p. 16 (footnote).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 77

Chesuncook limestone 

Silurian: Maine. 

Bradford Willard, 1945, Jour. Paleontology, v. 19, no. 1, p. 67-68.

Chetwynd granite

Devonian: Newfoundland, Canada.

J. R. Cooper, 1954, Canada Geol. Survey Mem. 276, p. 29.

Cheval beds

Upper Cretaceous: Manitoba, Canada.

W. M. Tovell, 1951, Manitoba Dept. Mines and Nat. Res. Mines Br. Prelim. Rept. 47-7, 

p. 4.

Cheviot formation

Devonian: Alberta, Canada.

F. G. Pox, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 4, p. 830-834.

Chicago Mound formation

Permian: Kansas and Nebraska.

G. E. Condra and E. C. Reed, 1943, Nebr. Geol. Survey Bull. 14, p. 36, 37.

Chickahominy formation

Eocene, upper (Jackson age) : Virginia (subsurface).

J. A. Cushman and D. J. Cederstrom, 1945, Va. Geol. Survey Bull. 67, p. 2-3.

Chickasaw Creek formation

Pennsylvanian (Bendian): Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854, 874- 

878.

Chico pfyonolites

Quaternary: New Mexico.

Helen Stobbe, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt. 2, p. 1354-1355.

R. F. Collins, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1034-1036, pi. 1.

Chico Creek beds

Upper Cretaceous: California.

F. M. Anderson, 1937, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, 

p. 1612.

Chicoma volcanic formation

Tertiary, middle: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103; 1938, Jour. 

<5eology, v. 46, no. 7, p. 939-940, 958.

Chicopee formation

Pre-Carboniferous(?) : California.

R. B. Guillou, 1953, Calif. Dept. Nat. Res., Div. Mines Special Rept. 31, p! 5 (fig. 2), 

7-10.

Chicopee Canyon formation 

See Chicopee formation.

Chico Shunie quartz monzonite

Mesozoic(?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 23-27.

Chikaskia member (of Harper sandstone) 

Permian: Kansas and Oklahoma.

G. H. Norton, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, p. 1557; 

1939, v. 23, no. 12, p. 1782-1785.
78 GEOLOGIC NAMES OF NORTH AMERICA

Childs latite

Pliocene (?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 47-48.

Chile limestone

Middle Cretaceous: Michoacan, Mexico.

E. J. Guzman, 1950, Asociacio'n Mexicana Geologos Petroleros Bol., v. 2, no. 2, strat. 

columns.

Chilibrillo limestone member (of Caimito formation) 

Miocene, lower: Panama Canal Zone and Panama.

A. A. Olsson, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 234 (correlation chart). 

W. P. Woodring and T. F. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull., 

v. 33, no. 2, p. 235.

Chimney Arm formation

Lower Ordovician: Newfoundland, Canada.

Frederick Betz, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 17-19.

Chimney Rock tongue (of Blair formation) 

Upper Cretaceous: Wyoming. 

L. A. Hale, 1950, Wyo. Geol. Assoc. Guidebook 5th Ann. Field Conf., p. 52, fig. 1.

China Creek andesite

Triassic: British Columbia, Canada.

J. S. Stevenson, 1945, British Columbia Minister Mines Ann. Kept. 1944, p. A-145.

Chinal limestone

Eocene, middle and upper : Tabasco and Chiapas, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 278, correlation chart.

Chinal shales

Eocene, middle and upper: Tabasco and Chiapas, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 278, correlation chart.

Chinameca limestone

Upper Jurassic to Lower Cretaceous: Istmo de Tehuantepec, Mexico. 

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart. 

Luis Benavides G., 1950, Asociacion Mexicana Ge61ogos Petroleros Bol., v. 2, no. 10, 

p. 604-606.

China Mountain formation

Lower and Middle (?) Triassic: Nevada.

H. G. Ferguson, S. W. Muller, and R. J. Roberts, 1951, Geology of the Winnemucca 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 11],

China Ranch beds

Quaternary: California.

J. F. Mason, 1948, Geol. Soc. America Bull., v. 59, no. 4, p. 336 (table 1), pi. 2.

Chinchaga formation

Devonian: Alberta, Canada (subsurface).

J. Law, 1955, Alberta Soc. Petroleum Geologists Jour., v. 3, no. 6, p. 83.

Chinook member (of Wapiabi formation) 

Upper Cretaceous: Alberta, Canada. 

Joseph Gleddie, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 523-524.

Chioack conglomerate-sandstone 

Precambrian: Quebec, Canada. 

P. B. Auger, 1954, Canadian Mining and Metall. Bull., v. 47, no. 8, p. 530.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 79

Chipman group

Middle Ordovician (Chazyan) : Vermont.

Marshall Kay and W. M. Cady, 1947, Science, v. 105, no. 2736, p. 601.

Chiquito sandstone

Precambrian (Chuaran) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107,112.

Chisholm Creek shale member (of Wellington formation) 

Permian: Kansas. 

W. A. Ver Wiebe, 1937, Wichita Municipal Univ. Bull., v. 12, no. 5, p. 11-12.

Chiva Chiva andesite

Pre-Pliocene: Panama Canal Zone.

[T. P. Thompson] 1943, Panama Canal, Special Bng. Div., 3d Locks Proj., pt. 2, 

chap. 3, p. 27.

Chival [formation]

Cretaceous (Albian) : Tabasco, Mexico.

G. P. Salas and Brnesto Lopez Ramos, 1951, Asociaci6n Mexicana GeOlogos Petroleros 

Bol., v. 3, nos. 1-2, table 1.

Chiwaukum schist

Pre-Ordovician: Washington.

B. M. Page, 1940, Stanford Univ. Abs. Dissert, v. 15, p. 118.

Chloride granite

Precambrian: Arizona.

M. G. Dings, 1951, U. S. Geol. Survey Bull. 978-E, p. 129.

Cholla member (of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 10, 16.

Cholla Canyon tongue (of Cliff House sandstone) 

Upper Cretaceous: New Mexico. 

P. T. Hays and A. D. Zapp, 1955, U. S. Geol. Survey Oil and Gas Inv. Map OM 144.

Choptankian substage

Miocene, middle: Central Atlantic Coastal Plain.

D. S. Malkin, 1953, Jour. Paleontology, v. 27, no. 6, p. 767-768.

Chorrera basalt

Miocene, lower: Panama.

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, p. 898 (correlation table).

Christine member (of Yegua formation) 

Eocene: Texas.

H. D. McCallum, 1947, S. Tex. [Geol. Soc. Guidebook] 14th Ann. Meeting Field Trip, 

p. 5.

Christopher formation

Lower Cretaceous or younger: Northwest Territories (BUef Ringnes Island),

Canada. 

W. W. Heywood, 1955, Canadian Mining and Metall. Bull., v. 48, no. 514, p. 60, 61.

Christy Creek siltstone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 180-182.
80 GEOLOGIC NAMES OF NORTH AMERICA

Chubbuck marble member (of Essex series) 

Precambrian (Archean) : California. 

J. C. Haazard ana E. F. Dosch, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 309.

Chuchi Lake syenite

Upper Jurassic or Lower Cretaceous: British Columbia, Canada. 

J. E. Armstrong, 1949, Canada Geol, Survey Mem. 252, p. 109-110.

Cnuckwalla complex

Precambrian: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 16-20.

Chuctanunda Creek dolomite

Lower Ordovician (lower Canadian) : New York.

D. W. Fisher, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 76 (fig. 2), 77, 90-92.

Chucunaque formation

Miocene, upper: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologie: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 133, 134 (correlation chart).

Chumway rhyolite

Oligocene: Colorado.

J. E. Vever, 1954, Dissert. Abs., v. 14, no. 7, p. 1088.

Chungo member (of Brazeau formation) 

Upper Cretaceous: Alberta, Canada. 

A. H. Lang, 1946, Canada Geol. Survey Paper 46-5, p. 15.

Church Creek beds

Eocene to Oligocene: California.

Parry Reiche, 1937, Calif. Univ. Pubs. Dept. Geol. Sci. Bull., v. 24, no. 7, p. 144-146, 

geol. map.

Cialitos limestone

Upper Cretaceous: Puerto Rico.

E. C. Mitchell, 1954, Puerto Rico Univ. Agr. Expt. Sta. Tech. Paper 13, p. 47, 48.

Cienda limestone (in Pacheta member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 12.

Cieneguilla formation

Pennsylvanian (Des Moines): New Mexico.

J. A. Young, Jr., 1946, (abs.) Geol. Soc. America Bull,, v. 57, no. 12, pt. 2, p. 1247.

Cieneguilla limburgite

Tertiary: New Mexico.

C. E. Stearns, 1953, Geol. Soc. America Bull., v. 64, no. 4, p. 467 (fig. 3), 468, pi. 1.

Ciervian stage

Late Cretaceous: California.

P. P. Goudkoff, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, p. 982-985.

Cima sandstone lentil (in Dos Palos shale member of Moreno formation) 

Cretaceous or Paleocene( ?): California. 

M. B. Payne, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1953.

Cimarron anhydrite

Permian: Oklahoma.

Henry Schweer, in O. E. Brown, 1937, Am. Assoc. Petroleum Geologists Bull., r. 21, 

no. 12, p. 1553 (fig. 9).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 81

Cinchona limestone (in Mt. Hybla beds)

Eocene, lower: Jamaica, British West Indies.

C. A. Matley, 1951, Geology and physiography of the Kingston district, Jamaica : Inst. 

of Jamaica, p. 57.

Cintalapa beds

Age not stated: Chiapas, Mexico.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologie: Heidelberg, 

Band 8, Abt. 4a, Heft 29, pis. 5a, 5b.

Cipero marl formation

Oligocene: Trinidad, British West Indies. 

M. L. Thomas, 1924, Oil Eng. and Finance, v. 5, no. 98, p. 328. 

R. M. Stainforth, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 7, 

p. 1292-1313.

Cipero Creek marl

8ee Cipero marl formation.

Cipiapa limestone

Middle Cretaceous: Puebla, Mexico.

J. G. Aguilera, 1906, 10e Cong. Gfiol. Internat., Mexico, Guide des Excursions 7,

p. 13, 17. 

R. W. Imlay, 1944, Geol. Soc. America Bull., v. 55, no. 8, p. 1017, Chart 10a.

Cisco Lake sandstone

Pennsylvanian: Texas.

F. B. Plummer, 1947, Jour. Geology, v. 55, no. 3, pt. 2, p. 194 (table 1).

Cistern member (of Yegua formation) 

Eocene: Texas.

H. D. McCallum, 1947, S. Tex. [Geol. Soc. Guidebook] 14th Ann. Meeting Field 

Trip, p. 4, 5.

City Creek limestone

Upper Devonian: Utah.

A. B. Granger and others, 1952, Utah Geol. Soc. Guidebook 8, p. 8.

City Creek series

Precambrian: Arizona.

B. D. Wilson, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1118, 1126-1127.

Clackamas gravels

Pleistocene: Oregon.

R. C. Treasher, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt 2, p. 2034; 

1942, Geologic map of the Portland area, Oregon (1:96,000) : Oreg. State Dept. 

Geology and Mineral Res.

Clairmont formation

See Claremont formation.

Clarabelle granite

Precambrian (Algoman?) : Ontario, Canada. 

Anonymous, 1937, Canadian Mining Jour., v. 58, no. 11, p. 593.

Claremont formation

Pennsylvanian (?) : Nova Scotia, Canada.

G. W. H. Norman and W. A. Bell, 1938, Canada Geol. Survey Map 409A.
82 GEOLOGIC NAMES OF NORTH AMERICA

Clarendonian age

Pliocene: North America.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 12, pi. 1.

Clarita limestone

Oligocene, lower: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologie: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 133,134 (correlation chart).

Clark Canyon lavas

Tertiary, upper, or Pleistocene: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull.. 

v. 66, no. 4, p. 377, pi. 1.

Clarkforkian age

Paleocene: North America.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 9, pi. 1.

Clarkston stage

Pleistocene (pre-Wisconsin): Washington.

R. L. Lupher, 1944, Geol. Soc. America Bull., v. 55. no. 12, p. 1433-1435; 1945, 

Jour. Geology, v. 53, no. 5, p. 337-348.

Claverack conglomerate (in Schodack formation) 

Cambrian: New York. 

G. H. Chadwick, 1946, Am. Jour. Sci., v. 244, no. 8, p. 585.

Claverny albite granodiorite

Precambrian (Archean) : Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Rept. 255, p. 2.

Clay City siltstone member (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 123-125.

Claymont clay bed (in Silverado formation) 

Paleocene: California.

W. P. Woodring and W. P. Popenoe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Chart 12.

Claypole Hills sandstone (in McLeansboro formation) 

Pennsylvanian: Indiana and Illinois.

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvanian strata 

between Caseyville, Ky. and Vincennes, Ind.; Abs. Thesis, 111. Univ.: Urbana, 111. 

p. 7.

Clayton basalts

Quaternary: New Mexico.

Helen Stobbe, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt. 2, p. 1354-1355.

R. F. Collins, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1028-1030, pi. 1.

Clear Creek gravels

Tertiary, lower: Wyoming.

R. P. Sharp, 1948, Jour. Geology, v. 56, no. 1, p. 1.

Clearwater volcanics

Precambrian (Keewatin): Ontario, Canada.

P. J. Pettijohn, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 765,

Jack Satterly, 1943, Ontario Dept. Mines Ann. Rept, v. 50, pt. 2, p. 28.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 83

Cle Elum formation

Cretaceous: Washington.

B. L. Lupher, 1944, Wash. Dept. Conserv. Devel., Div. Geology Kept. Inv. 11, p. 7, 

12-15, pi. 1.

Clement member (of Grand Detour formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., fig. 3.

Clementsville limestone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 161-162.

Cle"ricy granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 126-127.

CISricy porphyritic syenites

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 116.

CISricy sediments

Precambrian: Quebec, Canada.

H. M. Bannerman, 1940, Quebec Dept. Mines Geol. Kept. 4, p. 10-11.

Cleveland Gulch quartzite member (of Hopewell series) 

Precambrian (Proterozoic) : New Mexico. 

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 42.

Cliffleld formation

Middle Ordovician: Virginia.

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 862-868.

Climax porphyry

Tertiary: Colorado.

E. J. Eisenach and Edward Matsen, 1954, Mining Bng., v. 6, no. 3, p. 274. 

J. W. Vanderwilt and K. U. King, 1955, Mining Eng., v. 7, no. 1, p. 43-44.

Clinetop algal limestone member (of Dotsero formation) 

Upper Cambrian: Colorado.

N. W. Bass and 'S. A. Northrop, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, 

no. o, p. 899-904.

Cloice member (of Lake Waco formation) 

Cretaceous (Gulf) : Texas.

W. S. Adkins and F. E. Lozo in F. E. Lozo, 1951, Fondren Sci. Series, no. 4, p. 122, 

fig. 25.

Cloud Rapids formation

Middle Cambrian: Newfoundland, Canada.

Frederick Betz, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 15-16.

Cloud River granite

Precambrian: Newfoundland, Canada.

C. B. Fritts, 1953, Newfoundland Geol. Survey Eept. 4, p. 14-15.
84 ? GEOLOGIC NAMES OF NORTH AMERICA

Cloudy Pass diorite

Tertiary: Washington.

13. A. Youngberg and T. L. Wilson, 1952, Econ. Geology, v. 47, no. 1, p. 4, 5.

Clover member (of Loysburg formation)

Middle Ordovician (Chazyau?) : Pennsylvania.

G. M. Kay, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1969.

Cloverdale sediments

Pleistocene to Recent: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 11, map.

Clovis beds

Pleistocene: New Mexico.

Ernst Antevs, 1935, Acad. Nat. Sci. Phila. Proc., v. 87, p. 305-306.

Cloyd conglomerate member (of Price formation) 

Mississippian: Virginia. 

Charles Butts, 1940, Va. Geol. Survey Bull. 52, pt. 1, p. 343, 346, 347.

Coahuila group

Lower Cretaceous: Coahuila, Durango, and Nuevo Leon, Mexico, and Texas. 

B. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 124-125.

Coal Brook member (of Stellarton series) 

Pennsylvanian: Nova Scotia, Canada. 

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 34-43 [1941].

Coal City limestone

Pennsylvanian (Des Moines) : Iowa, Missouri, and Oklahoma.

L. M. Cline, 1941, Am. Assoc. Petroleum Geologists Bull, v. 25, no. 1, p. 59-60, 64.

Coal Creek serpentine 

Precambrian: Texas.

V. E. Barnes, 1940, in Geol. 'Soc. America [Guidebook] 53d Ann. Meeting, p. 53 

(geol. map).

Coaldale chert

Ordovician (?) : Nevada.

B. M. Page, 1949, (abs.) Geol. Soc. America Bull., v. 60, no. 12, pt. 2, p. 1943.

Coalspur beds

Paleocene: Alberta, Canada.

Canada Geological Survey, 1951, Canada Geol. Survey Map 1002A.

Coalvale cyclothem or formation

Pennsylvanian (Des Moines): Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 

22 ; 1938, Kans. Acad. Sci. Trams., v. 41, p. 193, 195.

Coane formation

Pennsylvanian (Missouri series): New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 60-61.

Coatzintla formation

Oligocene: Vera Cruz, Mexico.

Ramiro Robles Ramos, 1942, Irrigacion en Mexico, v. 23, no. 3, p. 45 (correlation

chart).

Luis Lim6n-Gutierrez, 1950, Asociaci6n Mexicana GeClogos Petroleros Bol., v. 2, 

no. 10, p. 617-619.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 85

Cobalt tillite or conglomerate (in Gowganda formation) 

Precambrian (Huronian) : Ontario, Canada. 

A. P. Coleman, 1926, Ice ages recent and past: New York, MaeMillan Co., p. 220-220.

Coban limestone

Cretaceous: Guatemala.

Karl Sapper, 1899, Petermanns geog. Mitt. Erganzungsbd. 27, Heft 127, p. 65; 1937,

Mittelamerika, Handbuch der regionalen Gelogie : Heidelburg, Band 8, Abt. 4u,

Heft 29, p. 28-29.

Cobb Mountain volcanics 

Quaternary: California. 

J. C. Brice, 1953, Calif. Dept. Nat. Ees., Div. Mines Bull. 166, p. 12, 37, pi. 7.

Cobre series

Eocene: Cuba.

Stephen Taber, 1931, Jour. Geology, v. 39, no. 6, p. 537-541; 1934, Geol. Soc, America 

Bull., v. 45, no. 8, p. 576-581, pi. 59.

Cobwebb basalt

Pliocene, lower (?) : Arizona.

S. G. Lasky and B. N. Webber, 1949, U. S. Geol. Survey Bull. 961, p. 34-35.

Cochixtla beds

Lower Cretaceous: Michoacan, Mexico.

E. J. Guzman, 1950, Asociacitin Mexicana GeSlogos Petroleros Bol., v. 2, no. 2, strat. 

columns.

Cochrane glacial substage

Pleistocene (Wisconsin) : North America.

Kirk Bryan and L. L. Bay, 1940, Smithsonian Misc. Coll., v. 99, no. 2, p. 68.

Cochrane limestone member (of Chimney hill formation) 

Lower Silurian: Oklahoma.

B. A. Maxwell, 1936, Northwestern Univ. Summaries of Doctoral Dissert., v. 4, 

p. 132, 133.

Cockrum sandstone

Upper Cretaceous: Kansas.

B. F. Latta, 1941, Kans. State Geol. Survey Bull. 37, p. 73-79.

Cocoran clay

Pliocene, upper, to Pleistocene, middle: California (subsurface). 

J. W. Frink and H. A. Kues, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, 

no. 11, p. 2357-2371.

Codrington College marl

Oligocene, lower: Barbados, British West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1584.

Codroy breccia

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 19.

Codroy series

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1937, Newfoundland Dept. Nat. Bes. Inf. Circ. 3, p. 2, 

map; 1938, Newfoundland Geol. Survey Bull. 12, p. 11-12.
86 GEOLOGIC NAMES OF NORTH AMERICA

Codroy shale

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1938, Newfoundland Geol. Survey Bull. 12, p. 12-13.

Coe group

Middle Silurian (Niagaran) : Illinois.

H. A. Lowenstam, 1949, 111. State Geol. Survey Eept. Inv. 145, p. 18.

Coffee Creek formation

Mississippian: Oregon.

C. W. Merriam, 1942, Jour. Paleontology, v. 16, no. 3, p. 372.

C. W. Merriam and S. A, Berthiaume, 1942, Geol. Soc. America BulL, v. 54, no. 2, 

p. 149-151.

Coffin Butte volcanics

Eocene, middle: Oregon.

I. S. Allison, 1953, Oreg. Dept. Geology and Mineral Industries Bull. 37, p. 3-5.

Cohn cyclothem

Pennsylvanian: Illinois.

W. A. Newton and J. M. Weller, 1937, 111. State Geol. Survey Eept. Inv. 45, p. 18.

Cohutta schist

Precambrian: Georgia.

A. S. Furcron, K. H. Teague, and J. L. Calver, 1946, (abs.) Geol. Soc. America Bull., 

v. 57, no. 12, pt. 2, p. 1195; 1947, Ga. Geol. Survey Bull. 53, p. 6-9.

Coker formation

Upper Cretaceous (Tuscaloosa group) : Alabama.

L. C. Conant and W. H. Monroe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 37.

Colchester granodiorite-quartz diorite

Devonian (?) : Newfoundland, Canada.

H. J. MacLean, 1947, Newfoundland Geol. Survey Bull. 22, p. 8.

Coldbrookian series

Middle Cambrian: Nova Scotia, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 1, 

Lower and Middle Cambrian pulsations : 2d ed., Peiping, China, University Press, 

Natl. Univ. Peking, p. 329-343.

Colebrook gravel

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 11, map.

Coleraine series

Pre-Ordovician: Quebec, Canada.

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines Geol. Bept. 20, p. 417, 426.

Coleraine shale or formation

Upper Cretaceous (Colorado series) : Minnesota.

C. B. Stauffer in C. B. Stauffer and G. A. Thiel, 1933, Minn. Geol. Survey Bull. 23, p. 18.

H. B. Berquist, 1944, Jour. Paleontology, v. 18, no. 1, p. 8-10.

Colina limestone

Permian: Arizona.

James Gilluly, J. B. Cooper, and J. S. Williams, 1954, U. S. Geol. Survey Prof. Paper 

266, p. 23-25.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 87

Collierstown limestone

Middle Ordovician: Virginia.

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 90.

Ceilings Ranch conglomerate

Pennsylvanian: Oklahoma.

W. E. Ham, 1954, Am. Awoc. Petroleum Geologists Bull., v. 38, no. 9, p. 2035-2045.

Collingston conglomerate

See Collinston conglomerate.

Collinston conglomerate

Miocene to Pliocene: Utah.

Neal Smith, 1953, Intermountain Assoc. Petroleum Geologists [Guidebook] 4th Ann. 

Field Conf., p. 73, 75.

B. D. Adamson, C. T. Hardy, and J. Stewart Williams, 1955, Utah Geol. Soc. Guidebook 10, p. 2, 4.

Col6n formation

Oligocene, middle: Cuba.

Jorge Brodermann, 1945, Soc. Cubana Ingenieros Eev., v. 42, no. 1, p. 129, chart facing 

p. 144.

Colonia andesitic tuffs and breccias 

Cretaceous: Honduras. 

B. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 27-28.

Colony Creek shale

Upper Pennsylvanian: Texas.

M. G. Cheney, 1948, Abilene Geol. Soc. [Guidebook] Spring Field Trip, June 11-12, 

p. 20.

Colony School conglomerate

Middle Pennsylvanian (Strawn) : Texas.

F. B. Plummer, 1950, Tex. Univ. Bur. Geology Pub. 4329, p. 85.

Colorada quartz porphyry

Upper Mesozoic or Tertiary, lower: Sonora, Mexico.

W. G. Valentine, 1936, Geol. Soc. America Bull., v. 47, no. 1, p. 82-83.

Colorado limestone

Age not stated: Costa Rica.

D. F. MacDonald and others, 1919, [Costa Bica] La Gaceta, Diario Oficial, aSo 41,

no. 138, p. 352. 

B. N. Webber, 1942, Am. Inst. Mining and Metall. Engineers Tech. Pub. 1445, p. 3.

Colotepec formation

Pleistocene, upper: Oaxaca, Mexico.

E. H. Palmer and L. G. Hertlein, 1936, Calif. Acad. Sci. Bull. 35, pt. 2, p. 65.

Colpitts group

Middle Jurassic: Oregon.

E. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 247-248, 249-255.

Colpoy Bay member (of Amabel formation)

Middle Silurian (Niagaran) : Ontario, Canada.

T. B. Bolton, 1953, Canada Geol. Survey Paper 53-23, p. 15-16.

Colton formation

Eocene: Utah.

E. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 139.
88 GEOLOGIC NAMES OF NORTH AMERICA

Comal series

Cretaceous (Neocomian) : Vera Cruz and Istmo de Tehuantepec, Mexico. 

G. P. Salas and Ernesto Lopez Eamos, 1951, Asociacita Mexicana Ge81ogos Petroleros 

Bol., v. 3, nos. 1-2, table 1.

Combs Mountain siltstone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 170-172.

Comet shale

Middle Cambrian: Nevada.

J. P. Mason in A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation 

theory, v. 1, Lower and Middle Cambrian pulsations: 2d ed., Peiping, China, University Press, Natl. Univ. Peking, p. 274-276.

Comitan limestone

Cretaceous: Chiapas, Mexico.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologie: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 29.

Commotion formation

Lower Cretaceous: British Columbia, Canada.

B. T. D. Wickenden and George Shaw, 1943, Canada Geol. Survey Paper 43-13, p. 5.

Compare formation

Pliocene: Trinidad, British West Indies.

C. J. Maury, 1925, Bull. Am. Paleontology, v. 10, no. 42, p. 169 (17). 

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1447, 1451 

(chart).

Comparo Road beds

See Comparo formation.

Comstock formation 

Eocene: Oregon. 

F. E. Turner, 1938, Geol. Soc. America Special Paper 10, p. 21, 24.

Comus formation

Lower Ordovician: Nevada.

R. J. Roberts, 1951, Geology of the Antler Peak quadrangle, Nevada: U. S. Geol. 

Survey Geol. Quadrangle Map [GQ 10].

Comyn formation

Pennsylvanian (Morrow) : Texas (subsurface).

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 85.

Conasiugan series

Middle Cambrian: Southeastern United States.

A. W. Grabau, 1937, Paleozoic formations in the light of the pulsation theory, v. 3, 

Cambrovician pulsation, pt. 2, Appalachian, Palaeocordilleran, Pre-Andean, Himalayan and Cathaysian geosynclines: Peiping, China, University Press, Natl. Univ. 

Peking, p. 10, 282.

Concentrator volcanics

Upper Cretaceous (?) : Arizona.

James Gilluly. 1937. Ariz. Univ. Bull., v. 8. no. 1, P. 27-32.

Concepci6n (Lower and Upper) series 

Miocene, lower: Vera Cruz, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 282-284, correlation 

chart.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN1936-1955 89

Concha limestone

Permian: Arizona.

James Gilluly, J. K. Cooper, and J. S. Williams, 1954, U. S. Geol. Survey Prot Paper 

266, p. 29-30.

Concord member (of Brasso formation) 

Miocene: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 53-54.

Condor member (of Swasey limestone) 

Middle Cambrian: Nevada and Utah. 

H. B. Wheeler, 1948, Nev. Univ. Bull., Geology and mning Ser., no. 47, p. 39, flg. 5.

Confederation granophyre

Precambrian (Archean) : Ontario, Canada.

J. D. Bateman, 1940, Jour. Geology, v. 48, no. 6, p. 631.

Coniston series

Precambrian (pre-Huronian) : Ontario, Canada. 

H. C. Cooke, 1943, Am. Jour. Sci., v. 241, no. 9, p. 568-577.

Connecting Point group

Precambrian: Newfoundland, Canada.

A. O. Hayes, 1948, Newfoundland Geol. Survey Bull. 32, p. 15-16.

Connell sandstone member (of Oil Creek formation) 

Middle Ordovician: Texas (subsurface).

T. S. Jones and others, 1949, W. Tex. Geol. Soc. Strat. Problems Comm., Sept. 1949,

p. 5. 6. 

B. H. Schweers, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 12, p. 2029-

2036.

Conner facies (of Dunham dolomite) 

Lower Cambrian: Vermont. 

Philip Fowler, 1950, Vt. Geol. Survey Bull. 2, pi. 1.

Conrad sandstone member (of Sawtooth formation) 

Jurassic: Alberta, Canada (subsurface). 

J. D. Weir, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 551.

Consuelo formation

Eocene, upper: Cuba.

J. A. Cushman and P. J. Bermudez, 1949, Cushman Lab. Foram. Research Contrib.,

V. 25, pt. 2, p. 27, 43. 

P. J. Bermudez, 1950, Soc. Cubana Hlstoria Nat. Mem., v. 19, no. 3, p. 258-262.

Contadero formation

Upper Devonian: New Mexico.

F. V. Stevenson, 1944, Dallas Digest Joint Ann. Meeting, p. 94-95; 1945, Jour. 

Geology, v. 53, no. 4, p. 239-241.

Continental Peak formation

Eocene, upper (?) : Wyoming.

B. L. Nace, 1939, Wyo. Geol. Survey Bull. 27, p. 22-25, pL 1.

Contra Costa group

Miocene, upper, to Pliocene, middle: California.

C. K. Ham, 1952, Calif. Dept. Nat. Kes., Div. Mines Special Bept. 22, p. 6 (fig. 3), 15.
90 GEOLOGIC NAMES OF NORTH AMERICA

Conway Cut siltstone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 170.

Cooking Lake member (of Woodbend formation) 

Devonian: Alberta, Canada (subsurface). 

E>. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, p. 1823.

Cook Ranch rhyolites

Oligocene, middle: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 373-374, pi. 1.

Cook Ranch volcanics

Oligocene, middle: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 374, pi. 1.

Cooks limestone tongue (of Humber Arm series)

Middle Ordovician (Chazyan) : Newfoundland, Canada.

T. N. Walthier, 1949, Newfoundland Geol. Survey Bull. 35, pt. 1, p. 23-24.

Coom Lake diorite-gabbro

Precambrian (Keweenawan?): Quebec, Canada.

J. M. Neilson, 1950, Quebec Dept. Mines Prelim. Kept. 238, p. 6-7.

Cooper Creek limestone

Pennsylvanian (Des Moines) : Iowa, Missouri, and Nebraska.

L. M. Cline, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 1, p. 65.

Cooper Peak dolomite

Lower Devonian: Nevada.

C. W. Merriam, 1940, Geol. Soc. America Special Paper 25, p. 35-36, pi. 1.

Copper City flow (in Portage Lake lava series)

Precambrian (middle Keweenawan series) : Michigan.

W. S. White, H. R. Cornwall, and R. W. Swanson, 1953, U. S. Geol. Survey Geol. 

Quadrangle Map GQ 27 [1954],

Copperhill formation

Precambrian: Tennessee, Georgia, and North Carolina. 

V. J. Hurst, 1955, Ga. Geol. Survey Bull. 63, p. 9-21.

Copper Mountain Group

Lower Devonian: Quebec, Canada.

A. M. Bell, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 241.

Coquille formation

Pleistocene, upper: Oregon.

E. M. Baldwin, 1945, Jour. Geology, v. 53, no. 1, p. 39-42.

Corbett sandstone

Lower Cretaceous (Bisbee group) : New Mexico.

S. G. Lasky, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 5, p. 533-534, fig. 2.

Corcoran member (of Price River formation) 

Upper Cretaceous: Colorado. 

R. G. Young, 1955, Geol. Soc. America Bull., v. 66, no. 2, p. 190-191.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 91

Cordova dolomite

Silurian (Niagaran) : Illinois.

T. E. Savage in C. K. Swartz and others, 1942, Geol. Soc. America Bull., v. 53, 

no. 4, p. 537, Chart 3.

Corduroy member (of Supai formation)

[Pennsylvanian and/or Permian]: Arizona. 

E. L. Jackson, 1951, Plateau, v. 24, no. 2, p. 86-88.

Cormorant limestone

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 21-22.

Cornelia quartz monzonite

Tertiary, lower (?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 32-39.

Corner-of-the-Beach formation

Lower(?) Cambrian: Quebec, Canada.

C. H. Kindle, 1942, Am. Jour. Sci., v. 240, no. 9, p. 634.

Cornwallis formation

Upper Ordovician: Northwest Territories (Cornwallis Island), Canada. 

B. Thorsteinsson and Y. O. Fortier, 1954, Canada Geol. Survey Paper 53-24, p. 8.

Corona formation

Upper Jurassic: San Luis Potosi, Mexico.

D. E. White and Jenaro GonzAlez Eeyna, 1946, U. S. Geol Survey Bull. 946-E, 

p. 134, 135.

Corral Creek glacial substage

Pleistocene (Wisconsin) : Colorado, Wyoming, and New Mexico. 

L. L. Bay, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 314; 1940, Geol. Soc. 

America Bull., v. 51, no. 12, pt. 1, p. 1860-1,862.

Correo sandstone member (of Chinle formation) 

Triassic: New Mexico. 

V. C. Kelley and G. H. Wood, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 47.

Corta sandstone (in Joserita member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11.

Cortado formation

Pennsylvanian (Des Moines) : New Mexico.

J. A. Young, Jr., 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, p. 1247.

Coryell syenite

Jurassic: British Columbia, Canada.

Goeffrey Gilbert, 1948, Structural geology of Canadian ore deposits: Montreal, 

Quebec, Canadian Inst. Mining and Metallurgy, p. 189.

Cosmo series

Precambrian (Timiskaming?) : Ontario, Canada.

W. C. Gussow, 1942, Ontario Dept. Mines Ann. Eept., v. 49, pt. 6, p. 4, 6.

Coso formation

Pliocene, upper, to Pleistocene, lower: California.

J. E. Schultz, 1937, Carnegie Inst. Washington Pub. 487, p. 79.

426779 57-
92 GEOLOGIC NAMES OF NORTH AMERICA

Coso granodiorite

Upper Mesozoic: California.

V. C. Kelley, 1937, Econ. Geology, v. 32, no. 8, p. 994, 996; 1938, Calif. Jour. Mines 

and Geology, v. 34, no. 4, p. 514, pi. 7.

Costigan member (of Palliser formation) 

Upper Devonian: Alberta, Canada. 

R. deWit and D. J. McLaren, 1950, Canada Geol. Survey Paper 50-23, p. 6-7.

Cosumnes formation

Middle or Upper Jurassic: California.

N. L. Taliaferro, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 125, p. 283-284.

Cotton formation

Upper Devonian: Pennsylvania and New York.

G. H. Chadwlck, 1936, N. Y. State Mus. Bull. 307, p. 78, 96.

tCottondale formation

Upper Cretaceous: Alabama

L. C. Conant and W. H. Monroe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 37.

Cotton Valley group

Upper Jurassic: Subsurface in Louisiana, Arkansas, Mississippi, and Texas. 

H. K. Shearer, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 6, p. 722, 723,

724-725. 

W. B. Weeks, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 8, p. 966-968.

Cottonwood beds

Lower Cretaceous: California.

F. M. Anderson, 1938, Geol. Soc. America Special Paper 16, p. 38 (table 1), 63-67.

Cottonwood Spring basalt 

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, 

pt. 2, p. 1197 ; 1949, v. 60, no. 7, p. 1156-1159.

Couch formation

Pliocene, lower: Texas.

G. L. Evans, 1949, W. Tex. Geol. Soc. Guidebook Field Trip 2, Nov. 6-9, p. 5-6.

Council Spring limestone

Pennsylvanian (Missouri series) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 62-63.

Cour d'Alene facies (of Belt series)

Precambrian: Alberta, Canada; and Montana.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p. 1877.

Courtenay Bay formation

Upper Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 116-117.

Cove quartz monzonite 

Jurassic: California.

O. P. Jenkins, 1938, Geologic map of California (1:500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Covel conglomerate (in Summum cyclothem) 

Pennsylvanian: Illinois. 

H. B. Willman, 1939, 111. Acad. Sci. Trans., v. 32, no. 2, p. 174-176.
GEOLOGIC NAMES OF NOETH AMEEICA INTRODUCED IN 19 3 6-19 5 5 93

Cove Mountain member (of Pocono formation)

Lower Mississippian: Pennsylvania. : 

Bradford Willard and A. B. Craves, 1938, Pa. Geol. Survey, per. 4, Bull. G 8, p. 18.

Cow Bayou member (of Logansport formation) 

Paleocene (Midway) : Louisiana.

D. P. Meaglier and L. C. Aycock, 1942, La. Dept. Conserv. Geol. Pamph. 3, p. 12-16. 

G. B. Murray, Jr. and E. P, Thomas, 1945, Am. Assoc. Petroleum Geologists Bull., 

v. 29, no. 1, p. 57.

Cowden anhydrite member (of Salado formation) 

Permian: Texas and New Mexico.

G. A. Kroenlein, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 11, p. 1689. 

S. C. Giesey and F. F. Fulk, 1941, Am. Assoc. Petroleum Geologist Bull., v. 25,.no. 4, 

p. 603.

Cowesett granite

Mississippian (?) : Rhode Island.

A. W. Quinn, 1952, Bedrock geology of the East Greenwich quadrangle, Rhode Island: 

U. S. Geol. Survey Geol. Quadrangle Map [GQ 17].

Cowley formation

Mississippian (Meramec series) : Kansas (subsurface).

Wallace Lee in G. E. Abernathy, R. P. Keroher, and Wallace Lee, 1940, Kans. State 

Geol. Survey Bull. 31, p. 15.

Cowley Canyon limestone member (of Wasatch group) 

Paleocene or Eocene, lower: Utah. 

J. S. Williams, 1948, Geol. Soc. America Bull., v. 59, no. 11, p. 1144-1145.

Cow Springs sandstone

Upper Jurassic: Arizona, Colorado, New Mexico, and Utah. 

E. D. McKee in C. R. Longwell, 1949, Geol. Soc. America Mem. 39, p. 46 (fig. 6). 

J. W. Harshbarger, C. A. Repenning, and R. L. Jackson, 1951, N. Mex. Geol. Soc. 

Guidebook 2d Field Conf., p. 97-98.

Coxcomb granodiorite

Upper Jurassic (?) : California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 64, pi. 3.

Coyote Butte formation

Permian: Oregon.

C. W. Merriam, 1942, Jour. Paleontology, v. 16, no. 3, p. 372.

C. W. Merriam and S. A. Berthiaume, 1943, i Geol. Soc. America Bull., v. 54, no. 2, 

p. 156-158.

Cozzette member (of Price River formation) 

Upper Cretaceous: Colorado. 

R. G. Young, 1955, Geol. Soc. America Bull., v. 66, no. 2, p. 191.

Crabbottom sandstone (in Wills Creek formation) 

Silurian: Virginia and West Virginia.

C. K. Swartz and F. M. Swartz, 1940, (abs.) Geol. Soc. America Bull., v. 51, nol 12, 

pt. 2, p. 2008.

Crabbs limestone

Mississippian: Newfoundland, Canada.

W. A. Bell, Canada Geol. Survey Bull, 10, p. 23-24.
94 GEOLOGIC NAMES OF NORTH AMERICA

Crab Creek formation 

Tertiary: Utah. 

R. E. Metter, 1955, Dissert. Abs., v. 15, no. 6, p. 1047.

Craborchard cyclothem (including Craborchard limestone) 

Pennsylvanian: Illinois.

J. M. Weller, L. G. Henbest, and C. O. Dunbar in C. O. Dunbar and L. G. Henbest, 

1942, 111. State Geol. Survey Bull. 67, p. 16,17 (fig. 3) [1943],

Craddock clay

Pennsylvanian (Cisco) : Texas.

F. B. Plummer, H. B. Bradley, and K. F. Pence, 1949, Tex. Univ. Bur. Econ. Geol. 

Pub. 4915, p. 21-23.

Cragleith formation

Ordovician: Ontario, Canada.

B. A. Liberty, 1955, Geol. Assoc. Canada Proc., v. 7, pt. 1, p. 145.

Craig limestone member (of Bogersville shale) 

Middle Cambrian: Tennessee. 

John Rodgers, 1943, Geologic map of Copper Eidge district, Hancock, and Grainger

Counties, Tennessee (1: 24,000) : U. S. Geol. Survey Strategic Minerals Inv. Prelim.

Map. 

John Rodgers and D. F. Kent, 1948, Tenn. Dept. Conserv. Div. Geology Bull. 55, p. 10.

Cram Hill formation

Middle Ordovician: Vermont.

L. W. Currier and R. H. Jahns, 1941, Geol. Soc. America Bull., v. 52, no. 9, 

p. 1493-1496.

Cranberry Point formation

Upper Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 115-116.

Cranbourne series

Devonian: Quebec, Canada.

Carl Tolman, 1936, Canada Geol. Survey Mem. 199, p. 14-16.

Crane member (of Mt. Simon formation)

Upper Cambrian: Illinois (subsurface).

J. tS. Templeton, Jr., 1950, 111. Acad. Sci. Trans., v. 43, p. 154.

Cranesville dolomite

Lower Ordovician: (upper Canadian) New York.

D. W. Fisher, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 76 (fig. 2), 77, 92-93.

Crater Creek basalt

Tertiary and Quaternary: Alaska (Aleutian Islands).

F. M. Byers, Jr., and others, 1947, U. S. Geol. 'Survey Alaskan Volcano Inv. Rept. 2, 

pt. 3, p. 25-26.

Cravatt formation

Lower Devonian: Oklahoma.

R. A. Maxwell, 1936, Northwestern Univ. Summaries of Doctoral Dissert., v. 4, 

p. 132, 134.

Crazy Hollow formation 

Tertiary: Utah. 

E. M. Spieker, 1949, Utah Geol. Soc. Guidebook 4, p. 36-37, geol. map.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 95

Crazy Johnson member (of Chadron formation) 

Oligocene, lower : South Dakota. 

John Clark, 1954, Carnegie Mus. Annals, v. 33, art. 11, p. 197-198.

Creggan Creek formation

Precambrian and Cambrian: British Columbia, Canada.

W. H. White, 1950, British Columbia Bur. Mines Ann. Kept. 1949, p. A-171 A-172.

Creighton granite

Precambrian: Ontario, Canada.

W. H. Collins, 1936, Eoyal Soc. Canada Trans., sec. 4, v. 30, p. 34-35.

Creola member (of Yegiia formation) 

Eocene (Claiborne) : Louisiana. 

H. B. Stenzel, 3939, Tex. Univ. Bur. Econ. Geol. Pub. 3945, pt. 2, p. 879, 881 [1940].

Crescent Hill basalt

Miocene and/or Pliocene: Wyoming.

A. D. Howard, 1937, Geol. Soc. America Special Paper 6, p. 17-19, 78.

Crescent Lake formation

Middle Ordovician( ?) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 10.

Crest Hill granite.

Precambrian: Virginia.

L. R. Thiesmeyer, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, pt. 2, p. 1963,

Creston [formation] 

Eocene: California.

O. P. Jenkins, 1938, Geologic map of California (1:500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Crete formation

Oligocene, middle: Haiti.

Jacques Butterlin, [1952], Resume" de these prgsentSe 8, la Sorbonne, La geologic de

la RSpublique d'Haiti et ses rapports avec celle des regions voisines (mimeo.), p. 4;

1954, Inst. Frangais d'Hai'ti Mem. 1, p. 63.

Crete formation

Pleistocene: Nebraska.

G. E. Condra, E. C. Reed, and E. D. Gordon, 1947, Nebr. Geol. Survey Bull. 15, p. 24-25.

Crevasse Canyon formation

Upper Cretaceous : New Mexico and Arizona.

J. E. Alien and Robert Balk, 1954, N. Mex. State Bur. Mines Min. Res. Bull. 36, p. 

91-92.

Crisfield member (of Salt Plain formation) 

Permian: Kansas.

G. H. Norton, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 12, p. 1788. 

R. C. Moore, J. C. Frye, and J. M. Jewett, 1944, Kans. State Geol. Survey Bull. 52, 

p. 159.

Croker Bay limestone

Middle or Upper Ordovician: Northwest Territories (Devon Island), Canada. 

V. E. Kurtz, A. H. McNair, and D. B. Wales, 1952, Am. Jour. Sci., v. 250, no. 9, 

p. 640-641.
96 GEOLOGIC NAMES OF NORTH AMERICA

Crook formation

Upper Devonian: Arizona.

E. N. Harshman ire M. N. Short and others, 1943, Ariz. Bur. Mines Bull. 151, Geol. 

Ser. 16, p. 27.

Crooked Creek formation 

Pleistocene: Kansas. 

C. W. Hibbard, 1949, Mien. Univ. Mus. Paleontology Contr., v. 7, no. 4, p. 70-71.

Crooked Lake granite pebble conglomerates 

Precambrian (Knife Lake) : Minnesota. 

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583, 1613.

Crossen trachyte 

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, 

pt. 2, p. 1197; 1949, v. 60, no. 7, p. 1151-1153.

Crossville sandstone Cm Duskin Creek formation) 

Pennsylvanian: Tennessee. 

H. E. Wanless, 1946, Geol. Soc. American Mem. 13, p. 37, 44,139.

Crow Creek member (of Pierre shale) 

Upper Cretaceous: South Dakota.

J. P. Gries and E. P. Eothrock, 1941, S. Dak. State Geol. Survey Rept. Inv. 38, p. 5, 

14-17.

Croweburg cyclothem or formation

Pennsylvanian (DesMoines) : Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 

22 ; 1938, Kans. Acad. Sci. Trans., v. 41, p. 193,195.

Crow Indian Lake member (of Sawtooth formation) 

Jurassic: Alberta, Canada (subsurface). 

J. D. Weir, 1949, Am. Assoc. Petroleum Geologists Bull. v. 33, no. 4, p. 552.

Crow Mountain sandstone member (of Chugwater formation) 

Triassic: Wyoming. 

J. D. Love, 1939, Geol. Soc. America Special Paper 20, p. 44.

Croydon group

Upper Devonian (?) (Oliverian magma series) : New Hampshire.

C. A. Chapman and others, 1938, Geologic map and structure sections of the Mascoma

quadrangle, New Hampshire, (1:62,500) : N. H. Highway Dept. 

C. A. Chapman, 1939, Geol. Soc. American Bull., v. 50, no. 1, p. 143-145.

Crucero tuffaceous dacite flows 

Cretaceous: Honduras. 

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 28, pi. 1 (geol. map).

Cruiser formation

Lower Cretaceous: British Columbia, Canada.

E. T. D. Wickenden and George Shaw, 1943, Canada Geol. Survey Paper 43-13, p. 8-10.

Crystal gray quartz monzonite

Precambrian (middle Keweenawan) : Minnesota.

M. S. Woyski, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1002, 1008-1009.

Crystal River formation

Eocene, upper (Ocala group) : Florida.

H. S. Puri, 1953, (abs.) Jour. Sed. Petrology, v. 23, no. 2, p. 130.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 97

Crystal Spring formation

Precambrian (Pahrump series) : California. . . r 

D. F. Hewett, 1940, Washington Acad. Sci, Jour., v. 30, no. 6, p. 240. ,

Cualac quartzite 

Triassic(?) : Guerrero, Mexico.

E. J. Guzman, 1950, Asociaci6n Mexicana Ge<51ogos Petroleros Bol., v. 2,, no. 2, 

p. 108-111. ...

Cuare limestone . 

Jurassic: Trinidad, British West Indies.

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 520.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenleiare Bull., 

v. 20, no. 59, p. 31-32.

Cubierto shale' (in Puente formation) 

Miocene, upper: California.

M. L. Krueger, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 363. 

A. O. Woodford, T. G. Moran, and J. S. Shelton, 1946, Am. Assoc. Petroleum Geologists 

Bull., v. 30, no. 4, p. 521.

Cubitas limestones 

Eocene: Cuba.

H. J. MacGlllavry, 1937, Geog. Geol. Meded. (Utrecht UniT.) Physiog.-Geol. Reeks, 

no. 14, p. 28, 30.

Cucamonga complex

Pre-Upper Cretaceous: California.

R. M. Alf, 1948, Geol. Soc. America Bull., v. 59, no. 11, p. 1107-1108.

Cucamonga fan deposits 

Recent: California. 

E. M. Mackevett, 1951, Calif. Dept. Nat. Res., Div. Mines Special Rept. 5, p. 11.

Cucamonga Canyon group 

Age unknown: California. 

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 259, map 1.

Cuche formation

Cretaceous (Aptian) : Trinidad, British West Indies. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 523.

Cuche River beds

Cretaceous (Neocomian) : Trinidad, British West Indies.,

A. G. Hutchinson, 1938, Bol. Geologia y Mineria (Venezuela), v. 2, nos. 2-4 (English 

ed.),p. 231, 235 (table).

Cuchillo Negro formation

Pennsylvanian (Derry) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 39.

Cuerbfo basalt

Pleistocene: New Mexico.

C. E. Stearns, 1943, Jour. Geology, v. 51, no. 5, fig. 2; 1953, Geol. Soc. America Bull., 

v. 64, no. 4, p. 476, 477, pi. 1.

Cuero formation

Miocene, upper: Texas.

A. W. Weeks, 1941, (abs.) Am. Assoc. Petroleum Geologists 26th Ann. Meeting Program, p. 20; 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 12, p. 1724- 

1726.
98 GEOLOGIC NAMES OF NORTH AMERICA

Cuesta del Cura limestone

Lower Cretaceous: Coahuila, Mexico.

E. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1125-1126.

Cuicatlan formation

Tertiary: Oaxaca, Mexico.

Tomas Barrera, 1946, Gufa geolfigica de Oaxaca: Mexico Univ. Nac., Inst. Geologla, 

p. 23, 24, 26.

Culebra dolomite member (of Rustler formation) 

Upper Permian: New Mexico.* 

J. E. Adams, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 11, p. 1614.

Culver Springs shale member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 147-148.

Cumana formation

Lower Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 32.

Cumberland facies (of Clinton formation)

Middle Silurian (Niagaran) : Maryland and Virginia. 

Charles Butts, 1940, Va. Geol. Survey Bull. 52, pt. 1, p. 238, 242-244.

Cummings member (of Mannville formation)

Lower Cretaceous: Alberta, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1614.

Cummings member (of Mount Head formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field onf. and 

Symposium, p. 68.

Cummingsville member (of Galena formation) 

Middle Ordovician: Minnesota. 

M. P. Weiss, 1955, Jour. Paleontology, v. 29, no. 5, p. 764-766.

Cummins Station shale member (of Muldraugh formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 213-214.,

Cunapo River argiline

Paleocene: Trinidad, British West Indies.

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1451 

(chart).

Cunapo-Southern horizon (of Turure formation)

Upper Cretaceous: Trinidad, British West Indies.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., 

J. P. MacGowan, p. 439-440.

 unningham granite

Precambrian: Georgia.

D. F. Hewett and G. W. rickmay, 1937, U. S. Geol. Survey Water-Supply Paper 819, 

p. 29, 30.

Cunningham limestone

Precambrian and/or Cambrian: British Columbia, Canada. 

S. S. Holland, 1954, British Columbia Dept. Mines Bull. 34, p. 16-17.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 193 6-1955 99

Cupido limestone

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1937, Geol. Soc. America Bull., v. 48, no. 5, p. 606-607.

Currant tuff

Miocene, upper, or Pliocene, lower: Nevada.

G. T. Faust and Eugene Callaghan, 1948, Geol. Soc. America Bull., v. 59, no. 1, 

p. 33-40.

Currant Creek formation

Upper Cretaceous(?): Utah.

P. T. Walton, 1944, Geol. Soc. America Bull., v. 55, no. 1, p. 117-120.

Curry clay

Upper Pennsylvanian (Cisco) : Texas.

F. B. Plummer in M. G. Cheney, 1948, Abilene Geol. Soc. [Guidebook] Spring Field

Trip, June 11-12, p. 8. 

F. B. Plummer and H. B. Bradley, 1949, Tex. Univ. Bur. Econ. Geology Pub. 4915,

p. 17-21.

Curtin limestone

Middle Ordovician (Mohawkian) : Pennsylvania. 

G. M. Kay, 1943, Econ. Geology, v. 38, no. 3, p. 194,197.

Curved Tree Point sandstone member (of Gething formation) 

Lower Cretaceous: British Columbia, Canada. 

F. H. McLearn and E. J. W. Irish, 1944, Canada Geol. Survey Paper 44-15, p. 8.

Cust Island sandstone member (of Gething formation) 

Lower Cretaceous: British Columbia, Canada. 

F. H. McLearn and B. J. W. Irish, 1944, Canada Geol. Survey Paper 44-15, p. 8.

Cutoff shaly member (of Bone Spring limestone)

Permian (Leonard series) : Texas and New Mexico.

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 569-570, pi. 2.

Cutter formation

Upper Ordovician (Cincinnatian) : New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 62-64, 

fig. 4.

Cutting dolomite

Lower Ordovician (Beekmantownian) : Vermont.

W. M. Cady, 1945, Geol. Soc. America Bull., v. 56, no. 5, p. 524, 541-542.

Cutwell group

Ordovician: Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 12-13.

Cygnian substage

Pennsylvanian (Desmoinesian) : Iowa, Kansas, Missouri, Nebraska, and 

Oklahoma.

W. V. Searight in W. B. Howe and W. V. Searight, 1953, Mo. Geol. Survey and Water 

Res. Rept. Inv. 14, pi. 1.

Cynthia Falls sandstone member (of Tuxedni formation) 

Middle Jurassic: Alaska. 

L. B. Kellum, 1945, N. Y. Acad. Sci. Trans., ser. 2, v. 7, no. 8, p. 203.
100 GEOLOGIC NAMES OF NORTH AMERICA

Dagmar limestone member (of Ute formation) 

Cambrian: Utah and Idaho. 

G. B. Maxey, 1955, Dissert. Abs., v. 15, no. 4, p. 558.

Dakin Hill member (of Littleton formation) 

Lower Devonian: New Hampshire. 

M. T. Heald, 1950, Geol. Soc. America Bull., v. 61, no. 1, p. 54-55, 70, 79.

Dalquier granite

Precambrian: Quebec, Canada.

W. W. Weber, 1951, Quebec Dept Mines Prelim. Kept. 257, p. 7.

Dalquier quartz gabbro 

Dalquier-Kayrand quartz gabbro 

See Kayrand quartz gabbro.

Dana Bay beds

Devonian: Northwest Territories (Bllesmere Island), Canada.

W. H. Feilden and C. E. deRance, 1878, Geol. Soc. London Quart. Jour., v. 34, p. 559.

Dane member (of Pecatonica formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 41, figs. 3,10,12, 16.

Dangkulo limestone

See Dankuro limestone.

Daniels conglomerate

Tertiary, middle (?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 46-47.

Danish Village formation

Precambrian (upper Algonkian) : North Greenland.

V. E. Kurtz and D. B. Wales, 1950, Okla. Acad. Sci. Proc., v. 31, p. 83, 85.

Dankuro limestone

Recent: Mariana Islands (Tinian).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol.

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas : Japan Hydrog.

Office Bull., v. 11, p. 58, table 4 [English translation in library of U. S. Geol.

Survey, p. 69].

Danmarks Fjord dolomite

Lower Ordovician (Lower Canadian?) : North Greenland. 

Erdhart Frankl, 1955, Meddel. om Grjzlnland, bind 103, nr. 7, p. 13, 18, 32.

Dantzic group

Lower Cambrian and Precambrian (?) : Newfoundland, Canada. 

T. N. Walthier, 1950, N. Y. Acad. Sci. Trans., ser. 2, v. 12, no. 7, p. 210.

Dantzler formation

Cretaceous (Comanche) : Subsurface in Mississippi and Louisiana. 

R. T. Hazzard, B. N. Blanpied, and W. C. Spooner, 1947, Shreveport Geol. Soc. 1945 

Ref. Kept., v. 2, p. 477.

Danville injection gneiss 

Middle Silurian: Maine. 

L. W. Fisher, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 71.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 101

Darling Creek glaciation

Pleistocene (pre-Wisconsin) : Alaska.

T. L. Pew6, 1952, (abs.) Geol. Soc. America Bujl., v. 63, no. 12, pt. 2, p. 1289. 

T. L. P4w6 in T. L. Pewfi and others, 1953, U. S. Geol. Survey Circ. 289, p. 9, 13 

(table 1).

Darrough felsite

Permian (?) : Nevada.

H. G. Ferguson and S. H. Cathcart, 1954, U. S. Geol. Survey Geol. Quadrangle Map 

GQ40.

Dartmouth River series

Silurian and Devonian: Quebec, Canada.

H. W. McGerrigle, 1950, Quebec Dept. Mines Geol. Rept. 35, p. 24.

Darty limestone.

Mississippian (Kinderhookian) : Illinois.

J. M. Weller and others, 1948, Geol. Soc. America Bull., v. 59, no. 2, p. 153, Chart 5, 

column 73.

Darwin quartz diorite

Upper Mesozoic: California.

V. C. Kelley, 1937, Econ. Geology, v. 32, no. 8, p. 992, 996; 1938, Calif. Jour. 

Mines and Geology, v. 34, no. 4, p. 514-516, pi. 7.

Dastur metagabbro

Precambrian: Quebec, Canada.

K. E. Dawson, 1950, Canada Geol. Survey Paper 50-3, p. 12, 13.

Dauphin shale

Ordovician: Pennsylvania.

Bradford Willard, 1943, Geol. Soc. America Bull., v. 54, no. 8, p. 1069 (footnote), 

1070, 1090, 1118.

Dauversiere granite

Precambrian: Quebec, Canada.

P. E. Imbault, 1951, Quebec Dept. Mines Prelim. Rept. 250, p. 8.

David formation 

Eocene, upper: Panama. 

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg,

Band 8, Abt. 4a, Heft 29, p. 131,134 (correlation chart). 

A. A. Olsson, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 236-237.

David Lake group

Precambrian: Quebec, Canada.

R. B. Graham, 1951, Canadian Mining Jour., v. 72, no. 9, p. 65-66.

Davidson evaporite

Devonian: Saskatchewan, Canada (subsurface).

A. D. Baillie, 1953, Manitoba Dept. Mines and Nat. Res. Mines Br. Pub. 52-5, p. 30.

Davidson formation

Jurassic: Subsurface in Saskatchewan and Manitoba, Canada.

J. R. Ower, 1953, Canadian Inst. Mining and Metallurgy Trans., v. 56, p. 397.

Davidson granodiorite

Miocene (?) : Nevada.

V. P. Gianella, 1934, Mining and Metallurgy, v. 15, no. 331, p. 299; 1936, Nev. Univ. 

Bull., v. 30, no. 9, p. 64-68.
102 GEOLOGIC NAMES OF NORTH AMERICA

Davis formation or cyclothem (including Davis sandstone) 

Pennsylvanian: Illinois. 

J. M. Weller, 1940, 111. State Geol. Survey Rept. Inv. 71, p. 39, 41.

Davistown sandstone

Permian: Pennsylvania.

W. O. Hickok, IV, and F. T. Moyer, 1940, Pa. Geol. Survey, ser. 4, Bull. C 26, p. 151.

Davy Lake breccia

Precambrian: Quebec, Canada.

Jacques Claveau, 1949, Quebec Dept. Mines Geol. Kept. 37, p. 28-29.

Dawes sandstone

Middle Silurian (Niagaran) : New York.

Tracy Gillette, 1947, N. Y. State Mus. Bull. 341, p. 99-100.

Dawn member (of Red Rose formation)

Upper Jurassic and Lower Cretaceous: British Columbia, Canada.

R. E. Sommers, 1955, British Columbia Bur. Mines Ann. Eept. 1954, p. A89-A90.

Dawson Bay formation

Devonian: Manitoba, Canada (subsurface).

A. D. Baillie, 1953, Manitoba Dept. Mines and Nat. Res. Pub. 52-5, p. 26-27.

Daysville formation

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 21, figs. 3, 12.

Dead Horse conglomerate member (of Manitou formation) 

Lower Ordovician: Colorado.

N. W. Bass and S. A. Northrop, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, 

no. 5, p. 905-906.

Deadman quartzite

Precambrian: Arizona.

E. D. Wilson, 1938, in Ariz. Bur. Mines Bull. 145 (Geol. Ser. 12), pi. 3 ; 1939, Geol. 

Soc. America Bull., v. 50, no. 7, p. 1118, 1123.

Deadmans Cove member (of Giles Cove formation) 

Ordovician: Newfoundland, Canada. 

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 10.

Dean formation

Precambrian: Georgia.

V. J. Hurst, 1955, Ga. Geol. Survey Bull. 63, p. 40-45.

Dean sandstone

Permian (Wolfcamp) : Texas (subsurface).

Lamar McLennan, Jr., and H. W. Bradley, 1951, Am. Assoc. Petroleum Geologists Bull., 

v. 35, no. 4, p. 899, 903.

Deansboro member (of Coeymans limestone)

Lower Devonian (Helderbergian) : New York.

L. V. Rickard, 1955, N. Y. Geol. Assoc. Guidebook 27th Ann. Meeting, p. 7.

DeBeque formation

Paleocene and Eocene, lower: Colorado.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull,, v. 52, no. 1, p. 18, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 103

Debolt formation

Mississippian: Alberta, Canada (subsurface).

G. Macauley, 1955, (abs.) Am. Assoc. Petroleum Geologists and Alberta Soc. Petroleum 

Geologists Program Western Canada Regional Meeting and 5th Ann. Field Trip, p. 21.

Debris Dam sandstone

Upper Cretaceous: California.

B. M. Page, J. G. Marks, and G. W. Walker, 1951, Am. Assoc. Petroleum GeologistsBull., v. 35, no. 8, p. 1739-1743.

Decie member (of Duff formation) 

Oligocene and younger (?) : Texas. 

W. N. McAnulty, 1955, Geol. Soc. America Bull., v. 66, no. 5. p. 553, pi. 1.

Deer diorite

Pre-Upper Cretaceous: California.

R. M. Alf, 1948, Geol. Soc. America Bull., v. 59, no. 11, p. 1109-1112.

Deer Bay formation

Lower Cretaceous: Northwest Territories (Ellef Ringnes Island), Canada. 

W. W. Heywood, 1955, Canadian Mining and Metall. Bull., v. 48, no. 514, p. 60, 61.

Deer Island member (of Winnipeg formation)

Ordovician : Saskatchewan and Manitoba, Canada.

W. O. Kupsch, 1953, Saskatchewan Dept. Nat. Res. Rept. 10, p. 11.

G. J. Genik, 1954, Alberta Soc. Petroleum Geologists News Bull., v. 2, no. 5, p. 1.

Deer Lake [group]

Mississippian: Newfoundland, Canada.

1954, Geological map of Newfoundland (1: 760,320) : Newfoundland Geol. Survey.

Deer Lake syenite

Precambrian: Ontario, Canada.

Jack Satterly and D. F. Hewitt, 1955, Ontario Dept. Mines Geol. Circ. 2, p. 5.

Deerpark stage

Lower Devonian (Ulsterian) : New York.

G. A. Cooper and others, 1942, Geol. Soc. America Bull., v. 53, no. 12, pt. 1, p. 1733, 

Chart 4.

Deer Plain formation

Pleistocene (Wisconsin) : Illinois and Missouri.

W. W. Rubey, 1952, U. S. Geol. Survey Prof. Paper 218, p. 90-96.

Deer Rips lime-silicate gneiss 

Middle Silurian: Maine. 

L. W. Fisher, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 71.

De Grey member (of Pierre shale) 

Upper Cretaceous: South Dakota.

D. R. Crandell, 1950, Am. Asso. Petroleum Geologists Bull., v. 34, no. 12, p. 2341, 

2343, table 1.

Delaney gravel

[Quaternary]: Texas.

R. W. Mathis, 1944, Jour. Sed. Petrology, v. 14, no. 2, p. 87-88.

Delano Peak latite member (of Bullion Canyon volcanics) 

Tertiary: Utah.

Eugene Callaghan, 1939, Am. Geophys. Union Trans. 20th Ann. Meeting, pt. 3, 

p. 442, 445.
104 GEOLOGIC NAMES OF NORTH AMERICA

Delassus formation

Cambrian (Cambric) : Missouri.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 75, no. 3, p. 239.

Delburne formation

Upper Devonian: Alberta, Canada.

J. M. Andrichuk and J. S. Wonfor, 1954, Am. Assoc. Petroleum Geologists Bull., 

v. 38, no. 12, p. 2505.

Del Cuerto formation

Pennsylvanian (Virgil) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 72.

De Leon formation

Pennsylvanian (Lampasas) : Texas (subsurface).

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1.

Delevanian stage

Late Cretaceous: California.

P. P. Goudkoff, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, p. 993-994.

Delia member (of Woodbend group) 

Upper Devonian: Alberta, Canada.

H. B. Belyea, 1955, Canada Geol. Survey Paper 55-3, p. 4,11-16.

Delight sand

Lower Cretaceous (Comanche series) : Arkansas.

R. W. Imlay, 1944, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 3.

Dellet sand member (of Moodys Branch marl) 

Eocene (Jackson): Alabama. 

H. B. Stenzel, 1952, Miss. Geol. Soc. [Guidebook] 9th Field Trip, p. 41.

Dellvale ash bed (in Ash Hollow member of Ogallala formation) 

Pliocene: Kansas.

Ada Swineford, J. C. Frye, and A. B. Leonard, 1955, Jour. Sed Petrology, v. 25, 

no. 4, p. 254, fig. 1.

Delmoro formation

Pliocene, middle: Kansas.

C. C. Williams and S. W. Lohman, 1949, Kans. State Geol. Survey Bull. 79, p. 57-59.

Deloro group

Precambrian (Keewatin) : Ontario, Canada.

W. R. Dunbar, 1948 in Structural geology of Canadian ore deposits : Canadian Inst. 

Mining and Metallurgy, p. 443.

Delphi Station member (of Skaneateles formation) 

Devonian: New York. 

G. A. Cooper, 1941, Washington Acad. Sci. Jour., v. 31, no. 5, p. 180.

Delta glaciation

Pleistocene (Wisconsin) : Alaska.

T. L. Pewe, 1952, (abs.) Geol. Soc. America Bull., v. 63, no. 12, pt. 2, p. 1289. 

T. L. Pew<§ in T. L. Pew6 and others, 1953, D. S. Geol. Survey Circ. 289, p. 9, 13 

(table 1).

Del wood formation or cyclothem (including Delwood sandstone) 

Pennsylvanian: Illinois. 

J. M. Weller, 1940, 111. State Geol. Survey Rept. Inv. 71, p. 39, 40.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 105

Dement member (of Grand Detour formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 10, 16.

Denault dolomite

Precambrian (Proterozoic) : Quebec and Newfoundland (Laborador), 

Canada.

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 8.

Denman formation

Upper Cretaceous: British Columbia, Canada.

J. L. Usher, 1952, Canada Geol. Survey Bull. 21, p. 25-26.

Denmar formation

Middle Mississippian: West Virginia.

Dana Wells, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 5, p. 902-918.

Denmark member (of Sherman Fall formation)

Middle Ordovician (Mohawkian) : New York, and Ontario, Canada. 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 267-268.

Densinyama formation

Eocene, upper: Mariana Islands (Saipan).

Risaburo Tayama, 1938, Geomorphology, geology, and coral reefs of Saipan Island: 

Tropical Industry Inst, Palau, South Sea Islands, BulL 1 [English translation 

in library of D. S. Geol. Survey, p. 53-56].

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. Paper 

253, p. 8-9.

Dep6sito series

Oligocene: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 280, correlation chart.

Depot Island formation

Permian: East Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 104, 111; nr. 2, p. 246.

Deputy formation

Middle Devonian: Indiana.

Guy Campbell, 1942, Geol. Soc. America Bull., v. 53, no. 7, p. 1060-1061.

Derry series

Pennsylvanian: New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 26-31,

Desert member (of Blackhawk formation) 

Upper Cretaceous: Utah. 

R. G. Young, 1955, Geol. Soc. America Bull., v. 66, no. 2, p. 183, 186.

Dessa Dawn formation

Mississippian: British Columbia, Canada.

L. R. Laudon and others, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33. no. 9, 

p. 1536-1540.

Dessau formation

Upper Cretaceous: Texas.

C. O. Durham, Jr., 1955, Corpus Christi Geol. Soc. [Guidebook] Ann. Field Trip, 

March 11-12, [p. 57], pi. 16.
106 GEOLOGIC NAMES OF NORTH AMERICA

Detroit glacial stage

Pleistocene: Oregon.

T. P. Thayer, 1939, Oreg. State Dept. Geology and Mineral Res. Bull. 15, p. 20, 23-24.

Deville formation

Lower Cretaceous: Alberta, Canada (subsurface). 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 7.

Devils Canyon member (of Modin formation) 

Upper Triassic: California. 

A. F. Sanborn, [1953], Stanford Univ. Abs. Dissert., v. 27, p. 436.

Devils Cove formation

Lower Cambrian: Newfoundland, Canada.

Frederick Beta, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 13-14.

Devils Gate limestone

Middle and Upper Devonian: Nevada.

C. W. Merriam, 1940, Geol. Soc. America Special Paper 25, p. 16-17.

Devils Hollow division (of Lexington limestone) 

Ordovician: Kentucky.

A. C. McFarlan and W. H. White, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, 

no. 8, p. 1640.

Dewey Lake redbeds

Permian (Ochoa series) : Texas (subsurface).

L. R. Page and J. E. Adams, 1938, (abs.) Am. Assoc. Petroleum Geologists Bull., 

v. 22, no. 12, p. 1709; 1940, v. 24, no. 1, p. 62-63.

Dezadeash group

Lower Cretaceous: Yukon, Canada.

E. D. Kindle, 1953, Canada Geol. Survey Mem. 268, p. 35-37.

Diablo formation

Permian: Nevada.

H. G. Ferguson, S. W. Muller, and S. H. Cathcart, 1953, Geology of the Coaldale 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 23].

Diablo formation

Pliocene, lower: California.

B. L. Clark in C. H. Weaver and others, 1944, Geol. Soc. America Bull., v. 55, no. 5, 

p. 585, Chart 11.

Diamond Creek sandstone 

Permian: Utah.

A. A. Baker and J. S. Williams, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, 

no. 4, p. 625.

Diamond Valley complex

Paleozoic and/or Mesozoic: California.

W. J. Miller, 1946, Geol. Soc. America Bull., v. 57, no. 5, p. 477-480.

Diana granite

Precambrian (Archean) : Arizona.

B. E. Thomas, 1949, Econ. Geology, v. 44, no. 8, p. 666, 669.

Dicksburg Hills sandstone

Upper Pennsylvanian: Indiana.

C. A. Malott, 1939, (abs.) Ind. Acad. Sci. Proc., v. 48, p. 114; 1947, v. 57, p. 131 

[1948].
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 107

Dicks Elver facies (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 117-119.

Difunta formation

Upper Cretaceous: Coahuila, Mexico.

B. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1133-1135.

Dike Lake slate

Precambrian (Knife Lake) : Minnesota.

J. T. Stark and V. G. Sleight, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1032 

(table 2), 1034.

Dillard limestone member (of Chimneyhill formation) 

Lower Silurian: Oklahoma.

R. A. Maxwell, 1936, Northwestern Univ. Summaries of Doctoral Dissert, v. 4, 

p. 132, 134.

Dillon granite geneiss

Precambrian (pre-Beltian) : Montana.

E. W. Heinrich, 1953, (abs.) Geol. Soc. America Bull., v. 64, no. 12, pt. 2, p. 1432.

Dime Box member (of Yegua formation) 

Eocene: Texas.

H. D. McCallum, 1947, S. Tex. [Geol. Soc. Guidebook] 14th Ann. Meeting Field Trip, 

p. 4.

Dina member (of Mannville formation)

Lower Cretaceous: Alberta, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1613-1614.

Dinosaur Canyon sandstone member (of Moenave formation) 

Upper Triassic(?) : Arizona.

E. H. Colbert and C. C. Mook, 1951, Am. Mus. Nat. History Bull., v. 97, art. 3, 

p. 151-153.

Diozoptyxis shales

Upper Cretaceous (Turonian) : Jamaica, British West Indies. 

L. J. Chubb, 1955, Geol. Mag., v. 92, no. 3, p. 187-188.

Dip Creek formation

Paleocene: California.

N. L. Taliaferro, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 4, p. 512-516.

Disappointment Bay formation

Upper Paleozoic or Mesozoic: Northwest Territories (Cornwallis Island),

Canada. 

R. Thorsteinsson and Y. O. Fortier, 1954, Canada Geol. Survey Paper 53-24, p. 13-14.

Disappointment Mountain conglomerate

Precambrian (Knife Lake) : Minnesota.

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583,1592.

Dismal Lake granodiorite-gneiss

Precambrian: Manitoba, Canada.

Jorma Kalliokoski, 1952, Canada Geol. Survey Mem. 270, p. 27.

Divide cyclothem

Pennsylvanian: Illinois.

J. R. Ball, 1943, 111. State Acad. Sci. Trans., v. 36, no. 2, p. 147,150.

426779 57 8
108 GEOLOGIC NAMES OF NORTH AMERICA

Divisadero facies

Lower Jurassic: Vera Cruz, Mexico.

H. K. Erben, 1954, Soc. Geol. Mexicana Bol., tomo 17, no. 2, p. 35.

Divisidero rhyolite series

Tertiary, lower: Chihuahua, Mexico.

R. T. Donald, 1935, Bug. and Mining Jour., v. 136, no. 12, p. 614.

Dixie Valley formation

Lower Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7],

Dixon granite

Precambrian: New Mexico.

Bvan Just, 1937, N. Mex. School Mines Bull. 13, p. 24-25.

Dobie volcanics

Precambrian (Keewatin) : Ontario, Canada.

G. L. Fletcher and T. N. Irvine, 1954, Ontario Dept. Mines Ann. Rept, v. 63, pt. 5, 

p. 15.

Dodson member (of Cook Mountain formation) 

Eocene (Claiborne) : Louisiana. 

J. Huner, Jr., 1939, La. Dept. Conserv. Geol. Bull. 15, p. 87-91.

Doe Creek sandstone (in Dunvegan formation)

Upper Cretaceous: Alberta and British Columbia, Canada. 

P. S. Warren and C. R. Stelck, 1940, Royal Soc. Canada Trans., ser. 3, v. 34, sec. 4, 

p. 144.

Doe Creek sandstone member (of Marlow formation) 

Permian: Oklahoma. 

O. F. Evans, 1954, Okla. Acad. Sci. Proc., v. 33, p. 196-197.

Dogs Head andesites

Quaternary: Washington.

Jean Verhoogen, 1937, Calif. Univ. Dept. Geol. Sci. Bull., v. 24, no. 9, p. 286.

Dolet Hills member (of Logansport formation) 

Paleocene (Midway) : Louisiana.

D. P. Meagher and L. C. Aycock, 1942, La. Dept. Conserv. Geol. Pamph. 3, p. 12-16 

G. E. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull., 

v. 29, no. 1, p. 57.

Dollond Arm Head quartz diorite

Devonian (?) : Newfoundland, Canada.

H. J. MacLean, 1947, Newfoundland Geol. Survey Bull. 22, p. 8.

Dolman gneiss

Devonian: Newfoundland, Canada.

J. R. Cooper, 1954, Canada Geol. Survey Mem. 276, p. 21.

Dolomite Point formation

Cambrian (post-Lower Cambrian, pre-Upper Ozarkian). Northeast Greenland. 

Christian Poulsen, 1930, Meddel. om Gr0nland, bind 74, nr. 12, p. 311.

Dombjerg paraschists

Precambrian: Northeast Greenland.

G. P. Leedal, 1952, Meddel. om Gr0nland, bind 142, nr. 6, p. 18.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 109

Dome da cite (in Vipond formation) 

Precambrian: Ontario, Canada.

B. S. W. Buffam, 1948, in Structural geology of Canadian ore deposits: Canadian 

Inst. Mining and Metallurgy, p. 459 (table).

Domenigoni granodiorite

See Domenigoni Valley granodiorite.

Domenigoni Valley granodiorite

Cretaceous: California.

E. S. Larsen, Jr., and N. B. Keevil, 1947, Geol. Soc. America Bull., v. 58, no. 6, p. 488.

B. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 69.

Domkirken series

Lower Permian (Saxonian) : Northeast Greenland.

Emil Witzig, 1954, Meddel. om Gr0nland, bind 72, afd. 2, nr. 5, p. 8, 11, 25.

Dona Ana member (of Lake Valley formation) 

Mississippian (Osage) : New Mexico.

L. R. Laudon and A. L. Bowsher, 1941, Am. Assoc. Petroleum Geologists Bull., 

v. 25, no. 12, p. 2116, 2136-2138, fig. 8.

Donalda formation

Upper Devonian: Alberta, Canada.

J. M. Andrichuk and J. S. Wonfor, 1954, Am. Assoc. Petroleum Geologosts Bull., 

v. 38, no. 12, p. 2505.

Doneley limestone member (of Savanna formation) 

Pennsylvanian (lower Desmoinesian) : Oklahoma. 

C. C. Branson, 1954, Okla. Acad. Sci. Proc., v. 33, p. 192, 193.

Donkey fanglomerate

Pliocene (?) : Idaho.

C. P. Ross, 1947, Geol. Soc. America Bull., v. 58, no. 12, pt. 1, p. 1122. <.

Donnay beds

See Donni sandstone member (of Tagpochau limestone).

Donnelly glaciation

Pleistocene (Wisconsin) : Alaska.

T. L. P6w4, 1952, (abs.) Geol. Soc. America Bull.i v. 63, no. 12, pt. 2, p. 1289. 

T. L. PeVe" in T. L. P6w4 and others, 1953, U. S. Geol. Survey Circ. 289, p. 9, 13 

(table 1).

Donni sandstone member (of Tagpochau limestone) 

Miocene, lower: Mariana Islands (Saipan).

Risaburo Tayama, 1938, Geomorphology, geology, and coral reefs of Saipaa Island: 

Tropical Industry Inst., Palau, South Sea Islands, Bull. 1 [English translation 

in library of U. S. Geol. Survey, p. 61-63].

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. 

Paper 253, p. 10-11.

Donny sandy tuff

See Donni sandstone member (of Tagpochau limestone).

Donovan formation

Lower Jurassic (Lias) : Oregon.

R. L. Lupher, 1943, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 229-235.
110 GEOLOGIC NAMES OF NORTH AMERICA

Dora member (of Bluebell formation) 

Silurian: Utah. 

Paul Billingsley in J. M. Boutwell, 1933, 16th Internat. Geol. Cong. [United States]

Guidebook 17, Excursion C-l, p. 110 (fig. 14). 

J. K. Rigby, 1952, Utah Geol. Mineralog. Survey Bull. 45, p. 23, 27, fig. 6.

Dorcheat member (of Schuler formation)

Upper Jurassic: Subsurface in Arkansas, Louisiana, and Texas.

F. M. Swain, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 5, p. 602-609.

Dor6 Lake group

Precambrian: Quebec, Canada.

R. B. Graham, 1951, Quebec Dept. Mines Prelim. Rept. 259, p. 3.

Dorena welded tuff 

Tertiary: Oregon. 

D. M. Hausen, [1954], Miss. Acad. Sci., Jour., v. 5, p. 212-216.

Door Run shale member (of Allegheny formation) 

Pennsylvanian: Ohio. 

M. T. Sturgeon and W. M. Merrill, 1949, Ohio Jour. Sci., v. 49, no. 1, p. 3-11.

Dosados sand and shale member (of Moreno formation) 

Upper Cretaceous: California. 

M. B. Payne, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1954.

Dos Bocas formation

Miocene: Quintana Roo, Mexico.

Manuel Alvarez, Jr., 1954, AsociaeiSn Mexieana Ge61ogos Petroleros Bol., v. 6, 

nos. 5-6, p. 210.

Dos Palmas rhyolite

Miocene (?) : California.

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 2, p. 24.

Dos Palos shale member (of Moreno formation) 

Cretaceous and Paleocene( ?) : California. 

M. B. Payne, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1953.

Dos Picachos gravels

Pleistocene and Recent: California.

N. L. Taliaferro, [1949], Geologic map of the Hollister quadrangle, Calif. (1: 62,500) : 

Calif. Dept. Nat. Res., Div. Mines [preprint?] Bull. 143, pi. 1.

Dot limestone

Middle Ordovician: Virginia.

R. L. Miller and W. P. Brosge, 1950, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 104.

Doten Cove formation

Lower Cambrian: Newfoundland, Canada.

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

Dotsero formation

Upper Cambrian: Colorado.

C. F. Bassett, 1939, Geol. Soc. America Bull., v. 50, no. 12, pt. 1, p. 1855-1858.

Double Horseshoe cyclothem

Pennsylvanian : Indiana and Illinois.

J. W. Alexander, 1943, 111. State Acad. Sci. Trans., v. 36, no. 2, p. 141, 142.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 111

Doublet group

Precambrian (Proterozoic) : Quebec, Canada.

W. F. Pahrig, 1951, Canada Geol. Survey Paper (Prelim. Map) 51-23.

Doucers marble and limestone

Cambrian: Newfoundland, Canada.

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 9-10.

Dough Hills member (of Fleming formation) 

Miocene: Louisiana. 

H. N. Fisk, 1940, La. Dept. Conserv. Geol. Bull. 18, p. 118,158-161.

Doughnut formation

Carboniferous: Utah.

A. E. Granger and others, 1952, Utah Geol. Soc. Guidebook 8, p. 10-11.

Douglas Lake member (of Lenoir limestone) 

Middle Ordovician: Tennessee. 

Josiah Bridge, 1955, Geol. Soc. America Bull., v. 66, no. 6, p. 727-728, pi. 1.

Dowelltown member (of Chattanooga shale) 

Upper Devonian : Tennessee and Alabama. 

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 883-884, 886.

Downeys Bluff member (of Renault formation) 

Mississippian (Chester) : Illinois. 

Elwood Atherton, 1947, 111. Acad. Sci. Trans., v. 40, p. 129.

Doylesburg member (of Shippensburg formation) 

Middle Ordovician (Bolarian) : Pennsylvania. 

L. C. Craig, 1949, Geol. Soc. America Bull., v. 60, no. 4, p. 715 (fig. 1), 727-731.

Dragon formation

Jurassic or older: Venezuela, and Trinidad, British West Indies. 

H. G. Kugler, 1953, Vereinigung Sehweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 30.

Dragonian age

Paleocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 9, pi. 1.

Draper dolomite member (of Nittany formation) 

Lower Ordovician (Canadian) : Virginia. 

B. N. Cooper, 1939, Va. Geol. Survey Bull. 55, p. 19-20.

Dreibuchten zone

Tertiary: Northeast Greenland.

H. P. Schaub in Wolf Maync and others, 1938, Meddel. om Gr0nland, bind 114, nr. 1, 

p. 40-44, fig. 1.

Drill Camp flow (in Yellowknife group)

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. E. G. Brown and A. S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans.. 

v. 56, p. 70.

Drinkard sandy member (of Yeso formation) 

Permian : New Mexico (subsurface). 

R. E. King, 1945, N. Mex, State Bur. Mines Min, Res. Bull, 23, p. 13-15, fig. I,
112 GEOLOGIC NAMES OF NORTH AMERICA

Drinker Creek sandstone member (of Lanesboro formational suite) 

Upper Devonian (Chautauquan) : Pennsylvania. 

K. E. Caster, 1938, Jour. Paleontology, v. 12, no. 1, p. 46, 47-49.

Dripping Springs formation 

Pleistocene: California. 

J. F. Mann, Jr., 1955, Calif. Dept. Nat. Res., Div. Mines Special Rept. 43, p. 9, 14-15.

Driscoll-Sevier sand

Oligocene: Texas (subsurface).

Alexander Deussen and K. D. Owen, 1939, Am. Assoc. Petroleum Geologists Bull., 

v. 23, no. 11, p. 1634.

Dr0mmebjerg limestone

Middle Silurian (Niagaran) : North Greenland.

Erdhart Frankl, 1955, Meddel. om Gr0nland, bind 103, nr. 7, p. 13, 22, 33.

Drumheller marine tongue (of Edmonton formation) 

Upper, Cretaceous: Alberta, Canada. 

J. A. Allan and J. O. G. Sanderson, 1945, Alberta Research Council Rept. 13, p. 62-63.

Drumheller silts

Quaternary (post-Wisconsin) : Washington.

[G. F. Beck], 1937, Central Wash. Coll. Education Geol. Bull., v. 2, no. 7.

Dry Creek glaciation

Pleistocene (pre-Wisconsin) : Alaska.

Clyde Wahrhaftig in T. L. P«w6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 7, 

13 (table 1).

Dry Creek Canyon member (of Dakota sandstone) 

Lower Cretaceous: Colorado. 

K. M. Waage", 1953, U. S. Geol. Survey Bull. 993, p. 12,13-17.

Dry Hill granite gneiss

Middle Paleozoic: Massachusetts.

M. E. Willard, 1951, Bedrock geology of the Mount Toby quadrangle, Massachusetts: 

U. S. Geol. Survey Geol. Quadrangle Map [GQ 8].

Dry Hollow latite

Tertiary: Utah.

Eugene Callaghan, 1939, Am. Geophys. Union Trans. 20th Ann. Meeting, pt. 3, p. 449.

Drywood formation or coal cycle

Pennsylvanian (Desmoinesian) : Oklahoma, Iowa, Kansas, Missouri, and

Nebraska. 

W. V. Seariglit and others, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 12,

p. 2747-2749. 

C. C. Branson, 1954, Okla. Geol. Survey Guidebook 2, p. 6.

Drywood soil

Pleistocene (Wisconsin) : Alberta, Canada.

Leland Horberg, 1954, Geol. Soc. America Bull., v. 65, no. 10, p. 1133-1134.

Duarte conglomerate

Pliocene (?): California.

J. S. Shelton, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 63.

Dubawnt group

Precambrian: Northwest Territories (Keewatin), Canada. 

G, M. Wright, 1955, Canada Geol. Survey Paper 55-17, p. 8-11.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED JN 1936-1955 113

Duchesnean age

Eocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 10, pi. 1.

Duck Lake gabbro

Pre-Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 37-38.

Duckling Creek syenite

Upper Jurassic or Lower Cretaceous: British Columbia, Canada. 

J. E. Armstrong, 1949, Canada Geol. Survey Mem. 252, p. 109-110.

Duf ault diorite and quartz diorite

Precambrian (Archean) : Quebec, Canada.

J W. Ambrose, 1941, Canada Geol. Survey Mem. 233, p. 64.

Duf ault granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 118-126.

Duff formation

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. America Bull., v. 57, no. 12, 

pt. 2, p. 1197 ; 1949, v. 60, no. 7, p. 1159-1161.

Duffin sandstone and shale (in Chinle formation) 

Upper Triassic: Utah. 

P. D. Proctor, 1953, Utah Geol. Mineralog. Survey Bull. 44, p. 10-11, 36-37.

Dufrene slate

Jurassic: California.

G. E. Heyl and J. H. Eric, 1948, Calif. Dept. Nat. Res., Div. Mines Bull. 144, pt. 1, 

p. 52, 53, pi. 7.

Dugald formation

Middle Cambrian: Nova Scotia, Canada.

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 11-18.

Dugald Brook series

Middle Cambrian: Nova Scotia, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 1, 

Lower and Middle Cambrian pulsations: 2d ed. } Peiping, China, University Press, 

Natl. Univ. Peking, p. 331.

Dugaldian series

Middle Cambrian: Nova Scotia, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 1, 

Lower and Middle Cambrian pulsations: 2d ed., Peiping, China, University Press, 

Natl. Univ. Peking, p. 328-343.

Dugger formation

Pennsylvanian: Indiana.

C. E. Wier, 1950, U. S. Geol. Survey Coal Inv. Map C 1.

Dunamagon granite

Devonian: Newfoundland, Canada.

D. M. Baird, 1951, Canada Geol. Survey Paper 51-21, p. 52-53.
114 GEOLOGIC NAMES OF NORTH AMEBICA

Duncan group

Miocene, upper: Arizona.

A. A. Stoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 297 (table).

Dun Glen formation

Upper Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and E. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada : U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Dunlap sandstone

Permian: Pennsylvania.

W. O. Hickok IV, and F. T. Moyer, 1940, Pa. Geol. Survey, ser. 4, Bull. C 26, 

p. 152-153.

Dunleith formation

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 6, 23-24, fig. 3.

Dunlevy formation

Lower Cretaceous: British Columbia, Canada.

F. H. McLearn and E. J. W. Irish, 1944, Canada Geol. Survey Paper 44-15, p. 2.

Dunmore quartzite

Lower Cambrian: Quebec, Canada.

H. C. Cooke, 1954, Geol. Assoc. Canada Proc., v. 6, pt. 2, p. 40.

Dunmore Hill marl member (of Navet formation) 

Eocene, lower: Trinidad, British "West Indies. 

V. C. Illing, 1928, Geol. Soc. London Quart. Jour. v. 84, p. 20-21.

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special Pub. 

24, p. 2-3.

Dunns Peak sandstone 

Eocene: California. 

Boris Laiming, 1940, 6th Pacific Sci. Cong. 1939 Proc., v. 2, p. 562, fig. 9.

Duparquet sediments

Precambrian: Quebec, Canada.

H. M. Bannerman, 1940, Quebec Dept. Mines Geol. Rept. 4, p. 12-15.

Duperow formation

Devonian: Manitoba, Canada (subsurface). 

J. R. Ower, 1952, Oil in Canada, v. 5, no. 1, p. 54.

Durango group

Lower Cretaceous: Durango, Mexico.

K. W. Imlay, 1944, Geol. Soc. America Bull., v. 55, no. 8, p. 1007, Chart lOa.

Durgin Brook member (of Littleton formation) 

Lower Devonian : New Hampshire.

M. T. Heald, 1955, The geology of the Gilmanton quadrangle, New Hampshire: N. H. 

State Plan. Devel. Comm., p. 9, 10.

Durkee Hill greenstones

Upper or post-Devonian: Vermont.

C. G. Doll, [1945], Vt. State Geologist 24th Kept., p. 20.

Durst silts

Pleistocene (Wisconsin?) : Texas.

M. M. Leighton, 1936, Medallion Papers 24, p. 16, 39 (fig. 5,
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 115

Dushkin basalt

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Eept. 2, pt. 2, p. 13-14.

Dutchtown formation

Lower Ordovician: Missouri.

H. S. McQueen, 1937, Mo. Geol. Survey and Water Ees. 59th Bietm. Rept. App. 1, 

p. 12-25.

Duvernay member (of Woodbend formation) 

Devonian: Alberta, Canada (subsurface).

D. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, 

p. 1822-1823.

Duverny granite

Precambrian (Archean) : Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Kept. 255, p. 2.

Dysart granite gneiss

Precambrian: Ontario, Canada.

Jack Satterly and D. F. Hewitt, 1955, Ontario Dept. Mines Geol. Circ. 2, p. 4.

Dyson member (of Bundle formation)

See Dyson Creek member (of Bundle formation).

Dyson Creek member (of Rundle formation) 

Mississippian: Alberta, Canada.

L. M. Clark, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 628. 

F. W. Beales, 1950, Canada Geol. Survey Paper 50-27, p. 4, table 1.

Dyson Hollow limestone zone or member (of Stoner member of Stanton 

formation)

Pennsylvanian (Missouri series) : Nebraska. 

G. E. Condra, 1949, Nebr. Geol. Survey Bull. 16, p. 32.

Dyston member (of Rundle formation)

See Dyson Creek member (of Rundle formation)

Eagle member (of Bluebell formation) 

Upper Ordovician: Utah. 

Paul Billingsley in J. M. Boutwell, 1933, 16th Internat. Geol. Cong. [United States]

Guidebook 17, Excursion C-l, p. 110 (fig. 14). 

J. K. Eigby, 1952, Utah Geol. Mineralog. Survey Bull. 45, p. 23, 27, fig. 6.

Eagle Bay formation

Precambrian or Paleozoic: British Columbia, Canada. 

A. G. Jones, 1948, Canada Geol. Survey Paper 48-4, p. 3.

Eagle Mills formation

Permian (?) : Subsurface in Arkansas, Louisiana, Mississippi, and Texas. 

H. K. Shearer, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 6, p. 724. 

E. W. Imlay, 1940, Ark. Geol. Survey Inf. Circ. 12, p. 8-15, pi. 12.

Eagle Mountains sandstone member (of Grayson formation) 

Upper Cretaceous: Texas. 

Elliot Gillerman, 1953, U. S. Geol. Survey Bull. 987, p. 27, 28, 31.

Eagle Nest formation

Pliocene (?) : New Mexico.

L. L. Eay and J. F. Smith, Jr., 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 190-191, 

pi. 1.
116 GEOLOGIC NAMES OF NOETH AMERICA

Eagle Peak syenite

Tertiary: Texas.

Elliot Gillerman, 1953, U. S. Geol. Survey Bull. 987, p. 9, 38.

Eagle Point member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 33, fig. 3.

Earp formation

Upper Pennsylvanian: Arizona.

James Gilluly, J. R. Cooper, and J. S. Williams, 1954, U. S. Geol. Survey Prof. Paper 

266, p. 18-23.

Easley group

Mississippian (Kinderhookian) : Missouri, Iowa, Illinois, Kentucky, and

Indiana. 

J. M. Weller and others, 1948, Geol. Soc. America Bull., v. 59, no. 2, p. 101, Chart 5.

East Arm formation

Upper Cambrian: Newfoundland, Canada.

J. C. Troelsen, 1947, Am. Jour. Sci., v. 245, no. 9, p. 537-538.

East Bay formation

Precambrian: Ontario, Canada.

F. J. Pettijohn, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 187,190.

East Bull Lake gabbro

Precambrian (Haileyburian) : Ontario, Canada.

E. S. Moore and H. S. Armstrong, 1945, Ontario Dept. Mines Ann. Rept., v. 52, pt. 6, 

p. 6-7.

East Cape volcanics

Quaternary: Alaska (Aleutian Islands).

R. R. Coats, 1953, U. S. Geol. Survey Bull. 989-A, p. 8-9, 14-16.

East Caroline beds

Miocene: Eastern Caroline Islands.

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 69-70, table 5 [English translatior in library of U. S. Geol. Survey, p. 84].

Easterwood shales

Eocene (Claiborne): Texas.

A. A. L. Mathews, 1950, Tex. Eng. Expt. Sta. Research Rept.. 14, p. E-4, geol, map.

East Fork formation or series

Upper Cretaceous: Northwest Territories (Mackenzie), Canada. 

J. S. Stewart, 1944, Canadian Inst. Mining and Metallurgy Trans., v. 47, p. 163; 

1945, Canada Geol. Survey Paper 45-29, p. 8

Eastland Lake formation

Pennsylvanian (Lampasas) : Texas (subsurface).

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 86.

East Liberty bone bed (in Columbus formation) 

Middle Devonian: Ohio. 

J. W. Wells, 1944., Geol. Soc. America Bull., v. 55, no. 3, p. 280-281.

East Molokai volcanic series

Pliocene(?): Hawaiian Islands (Molokai).

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 69, 73.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 117

"East Ridge group

Age unknown: California.

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 278-279, map 1.

East Verde limestone

Paleozoic (Devonic) : Arizona.

[C. R.] Keyes, 1942, Pan-Am. Geologist, v. 77, no. 3, p. 228.

Eastview formation

Ordovician: Ontario, Canada.

A. E. Wilson, 1937, Royal Soc. Canada Trans., ser. 3, v. 81, sec. 4, p. 46, 59; 1940, 

Canada Geol. Survey Map 588A.

East Waynesboro formation 

Age not stated: Virginia. 

W. A. Nelson, 1949, (abs.) Va. Acad. Sci. Proc. 1948-1949, p. 139.

Eaton sandstone member (of Saginaw formation) 

Pennsylvanian: Michigan.

W. A. Kelly, 1936, Mich. Dept. Conserv. Geol. Survey Div. Pub. 40, Geol. Ser. 34, 

pt. 2, p. 207, 211-214.

Echo limestone or formation

Precambrian (Kwaguntan) : Arizona.

Charles Keyes. 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 113.

Echo Falls shale

Eocene, upper: California.

T. L. Bailey, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 11, p. 1920 

(fig. 3).

Echooka glaciation

Pleistocene (Wisconsin) : Alaska.

R. L. Detterman in T. L. P6w6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 12, 13 

(table 1).

Edgecliff member (of Onondaga limestone) 

Middle Devonian: New York.

W. A. Oliver, Jr., 1954, Geol. Soc. America Bull., v. 65, no. 7, p. 626-627, 635-636, 

641-642.

Edie School rhyolites 

Pliocene: Idaho.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 376-377, pi. 1.

Edinburg formation

Middle Ordovician: Virginia.

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 78-86.

Edna dolomite

Precambrian (Beltian) : Washington.

lan Campbell and J. S. Loofbourow, Jr., 1946, (abs.) Geol. Soc. America Bull., v. 57, 

no. 12, pt. 2, p. 1250.

Edna Mountain formation

Permian: Nevada. :

R. J. Roberts, 1951, Geology of the Antler Peak quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 10].
118 GEOLOGIC NAMES OF NORTH AMERICA

Eel River formation

Pliocene, lower: California.

B. A. Ogle, 1953, Calif. Dept. Nat. Kes., Div. Mines Bull. 164, p. 13 (fig. 3), 28-31, pi. 1.

Effna limestone

Middle Ordovician: Virginia.

B. N. Cooper, 1944, Va. Geol. Survey Bull. 60, p. 59-64.

Egedesminde gneiss complex

Precambrian: West Greenland.

Hans Kamberg, 1948, Meddel. Dansk Geol. Foren., bind 11, hefte 3, p. 313, 319-320, 

fig. 1.

Eggners Ferry chert

Mississippian: Kentucky.

B. M. Luttrell and Ann Livesay, 1952, Ky. Geol. Survey, ser. 9, Bull. 11, p. 5, 11-12.

Eighteenmile Creek member (of Ludlowville formation) 

Middle Devonian: New York.

R. G. Sutton, 1951, Rochester Acad. Sci. Proc., v. 9, no. 5-6, p. 366.

El Abra formation

Miocene, upper: Cuba.

J. A. Cushman and P. J. Bermudez, 1949, Cushman Lab. Foram. Research Contrib.,

v. 25, pt. 2, p. 27. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 300-301.

Eldena member (of Nachusa formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16tn Ann. 

Field Conf., fig. 3.

Elder sandstone

Age not stated: Nevada.

James Gilluly, 1955, in Pacific Petroleum Geologist, v. 9, no. 8, p. 1.

Elder Creek group

Jurassic (Knoxville) : California.

F. M. Anderson, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 184 [preprint 1941].

El Doctor limestone

Lower Cretaceous : Queretaro, Mexico.

B. W. Wilson, J. P. Hernandez M., and B. Meave T., 1955, Soc. Geol. Mexicana Bol., 

tomo 18, no. 1, p. 2-3, fig. 2.

El Dorado Ridge gneissose quartz diorite 

Age unknown: California. 

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 298-300, map 1.

Eleonore Bay formation

Precambrian: Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 15-57.

Elenores S0 series

Precambrian (Greenlandian) : Northeast Greenland.

H. R. Katz, 1952, Meddel. om Gr0nland, bind 144, nr. 8, p. 42-49.

John Haller, 1955, Meddel. om Gr0nland, bind 73, afd. 1, nr. 3, p. 39,159.

Elephant Butte formation

Pennsylvanian (Des Moines) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 48-49.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 119

Elephant Hill breccia

Miocene, middle, or older: California.

J. S. Shelton, 1955, Geol. Soc. America Bull., v. 66. no. 1, p. 56, pi. 1.

Elephant Mountain flow

Miocene and Pliocene : Washington.

A. C. Waters, 1955, Geol. Soc. America Bull., v. 66, no. 6, p. 673, pi. 1.

Eleventh Street limestone

Pennsylvanian (Des Moines) : Oklahoma..

K. C. Moore, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 102. 

E. H. Dott, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 8, p. 1592, 

1593-1594.

Elise formation

Triassic(?) : British Columbia, Canada.

H. W. Little, 1950, Canada Geol. Survey Paper 150-19, p. 25-26.

Elk conglomerate

Lower Cretaceous: British Columbia, Canada.

B. E. MacKay, 1934, Canada Geol. Survey Summ. Kept. 1933, pt. B, p. 5.

Elk Butte member (of Pierre shale) 

Upper Cretaceous: South Dakota. 

W. V. Searigbt, 1937, S. Dak. State Geol. Survey Kept. Inv. 27, p. 50-55, pi. 3.

Elk Creek basalt

Miocene and/or,Pliocene: Wyoming.

A. D. Howard, 1937, Geol. Soc. America Special Paper 6, p. 33-36, 78.

Elkhorn basalt

Tertiary: Wyoming.

K. E. Wilcox, 1944, Geol. Soc. America Bull., v. 55, no. 9, p. 1054.

Elk Point formation

Silurian: Subsurface in Alberta and Saskatchewan, Canada. 

J. E. McGehee, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 603, 

606-611.

Elk Ridge limestone member (of Minturn formation) 

Pennsylvanian: Colorado.

A. H. Koschmann and F. G. Wells, 1946, Colo. Sci. Soc. Proc., v. 15, no. 2, p. 62, 67. 

Ogden Tweto, 1949, Colo. Sci. Soc. Proc., v. 15, no. 4, p. 202-203.

Ella Island formation

Lower Cambrian: Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 27; nr. 2, p. 226.

Ellerslie member (of Blairmore formation)

Lower Cretaceous: Alberta, Canada (subsurface).

C. W. Hunt, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, p. 1800.

Elliot Bay conglomerate

Precambrian: Saskatchewan, Canada.

A. M. Christie, 1952, Canada Geol. Survey Mem. 269, p. 14.

Ellsworth formation

Upper Cretaceous: Kansas.

E. C. Moore and K. K. Landes, 1937, Geologic map of Kansas [1:500,000] : Kans. 

State Geol. Survey.
120 GEOLOGIC NAMES OF NORTH AMEEICA

El Luis Ridge group

Age unknown: California.

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 296, map 1.

Elm member (of Nachusa formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., fig. 3.

Elm Creek silts

Pleistocene (Illinoian?) : Texas.

M. M. Leighton, 1936, Medallion Papers 24, p. 8-11, 39 (fig. 5).

Elmira formation

Eocene, middle: Cuba.

J. F. de Albear, 1941, Soc. Cubana Ingenleros Kev., v. 36, chart facing p. 564. 

Jorge Brodermann, 1945, Soc. Cubana Ingenieros Kev., v. 42, no. 1, p. 124, chart facing 

p. 144.

El Modeno volcanics

Miocene: California.

J. E. Schoellhamer and others, 1954, U. S. Geol. Survey Oil and Gas Inv. Map OM 154.

El Monte limestone

Cretaceous (Albian-Cenomanian) : Hidalgo, Mexico. 

P. S. Simons, 1951, Stanford Univ. Abs. Dissert., v. 26, p. 333.

El Morro fanglomerate

Tertiary, lower or middle: Hidalgo, Mexico.

F. S. Simons, 1951, Stanford Univ. Abs. Dissert., v. 26, p. 333.

El Plan formation

Upper Triassic: Honduras.

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 25-27.

El Rito formation

Tertiary (pre-upper Miocene) : New Mexico.

H. T. U. Smith, 1938, Jour. Geology, v. 46, no. 7, p. 940-944, 958.

Elsie Mountain greenstones

Precambrian (Keewatin) : Ontario, Canada.

Anonymous, 1937, Canadian Mining Jour., v. 58, no. 11, p. 591, 592.

Elsmere member (of Repetto formation) 

Pliocene, lower: California.

U. S. Grant, IV; and L. G. Hertlein, 1943, Calif. Dept. Nat. Res., Div. Mines

Bull. 118, pt. 2, p. 202 (fig. 85) [preprint 1941]. 

G. B. Oakeshott, 1950, Calif. Jour. Mines and Geology, v. 46, no. 1, p. 54 (fig. 2), 55.

El Socavon facies (of El Doctor limestone) 

Lower Cretaceous: Queretaro, Mexico.

B. W. Wilson, J. P. Hernandez M., and E. Meave T., 1955, Soc. Geol. Mexicana Bol., 

tomo 18, no. 1, p. 5, fig. 2.

Elves Chasm tongue

Lower and/or Middle Cambrian: Arizona.

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 87-88.

Elvira group

Mississippian (Chester) : Illinois and Missouri.

J. M. Weller, 1939, Kans. Geol. Soc. Guidebook 13th Ann. Field Conf., p. 131, 136.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 121

Elway limestone

Middle Ordovician: Virginia.

B. N. Cooper, 1945, Va. Geol. Survey Bull. 66, p. 17, 42,134, 206-207.

Embudo granite

Precambrian: New Mexico.

Arthur Montgomery, 1953, N. Mex. State Bur. Mines Min. Ees. Bull. 30, p. 37-46.

Emilia group

Lower Paleozoic (Caledonian) : Northeast Greenland.

C. E. Wegmann, 1935, Meddel. om Grjzfnland, bind 103, nr. 3, p. 32, pi. 1.

fEmma Creek formation 0 

Pleistocene: Kansas.

S. W. Lohman and J. C. Prye, 1939, (abs.) Bcon. Geology, v. 34, no. 8, p. 942-943; 

1940, v. 35, no. 7, p. 849-851.

Encajonado formation

Miocene: Tabasco and Chiapas, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart. 

G. P. Salas and Ernesto Lopez Bamos, 1951, Asociacifin Mexicana GeOlogos Petroleros 

Bol., v. 3, nos. 1-2, p. 37-38.

Encanto series

Miocene, lower: Istmo de Tehuantepee, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 281, correlation chart.

Encarnaci6n shale

Oligocene: Tabasco and Chiapas, Mexico.

G. P. Salas and Ernesto Lopez Bamos, 1951, Asociacidn Mexicana Gefilogos Petroleros 

Bol., r. 3, nos. 1-2, p. 34-35.

Encina Sola quartz diorite

Cretaceous: Baja California, Mexico.

A. O. Woodford and T. F. Harriss, 1938, Geol. Soc. America Bull., v. 49, no. 9, 

p. 131S-1314.

Endako group

Oligocene or younger: British Columbia, Canada.

J. E. Armstrong, 1947, Canada Geol. Survey Paper 47-13 (Prelim. Map 47-13A).

Englee formation

Ordovician: Newfoundland, Canada.

Frederick Betz, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 21-22.

Ennery formation

Eocene, upper: Haiti.

Jacques Butterlin, [1952], Rgsumg de these pre*sente*e a la Sorbonne, La g6ologie de 

la Rfipublique d'Haiti et ses rapports avec celle des regions voisines (mimeo.), 

p. 3 ; 1954, Inst. Frangals d'Haiti Mem. 1, p. 59.

Enrag6 formation

Pennsylvanian: New Brunswick, Canada.

G. W. H. Norman, 1941, Canada Geol. Survey Map 647A.

Ensign Lake green slates, tuffs, and graywackes. 

Precambrian (Knife Lake) : Minnesota. 

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583, 1605-1606.

Ensign-Snowbank Lake agglomerate

Precambrian (Knife Lake): Minnesota.

W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583, 1609-1610.
122 GEOLOGIC NAMES OF NORTH AMERICA

Entrance conglomerate (in Edmonton formation) 

Upper Cretaceous: Alberta, Canada. 

A. H. Lang, 1944, Canada Geol. Survey Paper 44-1, p. 2, 7.

Eoline member (of Coker formation)

Upper Cretaceous (Tuscaloosa group) : Alabama.

L. C. Conant and W. H. Monroe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 37.

Epitaph dolomite

Permian: Arizona.

James Gilluly, J. E. Cooper, and J. S. Williams, 1954, U. S. Geol. Survey Prof. 

Paper 266, p. 25-27. ,

Eremitdal series (of Eleonore Bay formation) 

Precambrian: Northeast Greenland.

Erdhart Frankl, 1951, Meddel. om Gr0nland, bind 151, nr. 6, p. 5, 6, 14. 

H. R. Katz, 1952, Meddel. om Gr0nland, bind 111, nr. 1, p. 31-34, 52, 53-54, pi. 3.

Erin Point beds (in Moruga formation)

Miocene, upper: Trinidad, British West Indies.

Heinrich Gerth, 1935, K. Akad. Wetensch. Amsterdam, Sect. Sci. Proc., v. 38, no. 4,

table facing p. 460.

E. A. Liddle, 1946, The Geology of Venezuela and Trinidad: Ithaca, N. Y., Paleont. 

Research Inst., p. 769.

Erna member (of Wilberns formation) 

Cambrian: Texas.

F. B. Plummer, [1942], Tex. Univ. Bur. Econ. Geology Min. Ees. Cire. 22, p. 1; 

1944, Circ. 33, p. 8.

Escacado limestone

Paleozoic (Devonic) : Arizona.

[C. R.] Keyes, 1942, Pan-Am. Geologist, v. 77, no. 3, p. 227, 228.

Escalante formation

Oligocene: British Columbia, Canada.

J. A. Jeletsky, 1950, Canada Geol. Survey Paper 50-37, p. 48.

Escanaba River group

Middle Ordovician: Michigan.

R. C. Hussey, 1950, Mich. Geol. Soc. [Guidebook 14th] Ann. Geol. Excursion, introd.

Escobales granodiorite

Pliocene (?) : Honduras.

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 30-31, pi. 1 (geol. 

map).

Escobar sandstone

Eocene, upper: California.

C. E. Weaver, 1953, Wash. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 44-48.

Escolin series

Oligocene: Vera Cruz, Mexico.

G. P. Salas, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 8, p. 1391. 

Luis LimSn-Gutie'rrez, 1950, AsociaciSn Mexicana Ge61ogos Petroleros Bol., v. 2, 

no. 10, p. 618-619.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 123

Escondido Creek leucogranodiorite

Cretaceous: California.

E. S. Larsen, Jr., and N. B. Keevil, 1947, Geol. Soc. America Bull., v. 58, no. 6, p. 489. 

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 87-89.

Escudo sandstone

Miocene, middle (Belizian): California.

Martin Van Couvering and H. B. Alien, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 

118. pt. 3, p. 496-500.

Eshe porphyry

Tertiary: Colorado.

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 81-83.

Eskasoni formation

Middle Cambrian: Nova Scotia, Canada.

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 10-11.

Eskimo Hut formation

Lower Ordovician (Ozarkian) : Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 22-23; nr. 2, p. 231.

Esmeralda member (of Brasso formation)

Oligocene, middle to upper: Trinidad, British West ladies. 

H. H. Renz, 1942, 8th Am. 'Sci. Cong. Proc., v. 4, p. 545-546, 555.

Esmond granite

Devonion(?) or earlier: Rhode Island and Massachusetts. 

Alonzo Quinn, R. G. Ray, and W. L. Seymour in Alonzo Quinn and others, 1948, 

R. I. Port and Indus. Devel. Comm. Geol. Bull. 3, p. 15, geol. map.

Esmont slate facies (of Candler formation) 

Age not stated: Virginia.

W. R. Brown and H C. Sundermann, 1954, (abs.) Geol. Soc. America Bull., v. 65, 

no. 12, pt. 2, p. 1356.

Espada formation

Upper Jurassic and Lower Cretaceous: California.

T. W. Dibblee, Jr. 1950, Calif. Dept. Nat. Res,, Div. Mines Bull. 150, p. 22-23, pi. 6.

Esperance sand member (of Vashon drift) 

Pleistocene: Washington. 

R. C. Newcomb, 1952, U. S. Geol. Surrey Water-'Supply Paper 1135, p. 19-23, pi. 1.

Esperanza limestone

Cambrian: Sonora, Mexico.

R. B. Mulchay and J. R. Velasco, [1951], Tentative correlation of the sedimentary 

rocks at Cananea, Sonora, Mexico, with the section at Bisbee, Ariz. Privately 

printed (mimeo.), p. 4-5 ; 1954, Min. Bng., v. 6, no. 6, p. 628.

Espey Creek limestone member (of Chappel formation) 

Mississippian: Texas. 

F. B. Plummer, 1950, Tex. Univ. Bur. Econ. Geology Pub. 4329, p. 28.

Espinal formation

Paleozoic (Devonic) : Arizona.

[C. R.] Keyes, 1942, Pan-Am. Geologists, v. 77, no. 3, p. 227, 228.

426779 57-
124 GEOLOGIC NAMES OF NORTH AMERICA

Espinal grit (in Joserita member of Lowell formation) f 

Lower Cretaceous: Arizona. ' 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11-12.

Espinaso volcanics

Tertiary: New Mexico.

C. E. Stearns, 1943, Jour. Geology, v. Si, no. 5, p. 309-310, flg. 2.

Espy formation

Lower Cretaceous: Texas.

B. M. Hufflngton, 1943, Geol. Soc. America Bull., v. 54, ao. 7, p. 1004-1007.

Essex series

Precambrian (Archean) : California.

J. C. Hazzard and E. F. Dosch, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 309.

Establishment member (of Mifflin formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., flgs. 3, 10, 16.

Ester ash bed

Pleistocene: Alaska.

T. L. P6w6, 1955, Geol. Soc. America Bull., v. 67, no. 6, p. 713.

Ester Lake graywackes, slates, and tuffs

Precambrian (Knife Lake) : Minnesota.

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583, 1611-1613.

Estero Franco formation

Miocene: Quintana Boo, Mexico.

Manuel Alvarez, Jr., 1954, Asociaci6n Mexicana Geologos Petroleros Bol., v. 6, 

nos. 5-6, p. 210.

Estes Park beds

Precambrian: Colorado.

M. F. Boos, 1954, (abs.) Geol. Soc. America Bull,, v. 65, no. 12, pt. 2, p. 1372.

Etah formation

Precambrian (Algonkian) : North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 219-220.

Etherington member (of Rocky Mountain formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Et-Then series

Precambrian: Northwest Territories (Mackenzie), Canada.

C. H. Stockwell, 1933, Canada Geol. Survey Summary Kept. 1932, pt. C, p. 59.

Euless member (of Woodbine formation) 

Upper Cretaceous (Cenomanian) : Texas.

R. T. Hazzard, B. W. Blanpied, and W. C. Spooner, [1947], Shreveport Geol. Soc. 1945

Bef. Kept., v. 2, p. 475, 476, 477, 480. 

L. W. Stephenson, 1952, U. S. Geol. Survey Prof. Paper 242, p. 10, 27-28, 36, 37.

Eulie shale

Lower Mississippian: Tennessee.

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 885.
GEOLOGIC NAMES OP NORTH AMERICA INTRODUCED H* 1936-1955 125:

Eureka Sound group

Cretaceous or Cenozoic: Northwest Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr^nland, bind 149, nr. 7, p. 78-79.

Eustis porphyry

Silurian or Devonian: Quebec, Canada.

G. V. Douglas, 1941, Quebec Dept. Mines Geol. Kept. 8, p. 16^18.

Eustis-Moulton Hill series

Ordovician: Quebec, Canada.

J. B. Hawley and others, 1945, Canadian Inst. Mining and Metallurgy Trans., v. 48, 

p. 372 (geol. map).

Everett member (of Nachusa formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 9.

Evington group

Paleozoic (?): Virginia.

W. B. Brown, 1953, Ky. Geol. Survey, ser. 9, Special Pub. 1, [p. 91] (fig. 1).

Excello formation

Pennsylvanian (Desmoinesian) : Missouri, Iowa, Kansas, Nebraska, and

Oklahoma. 

W. V. Searight in W. B. Howe and W. V. Searight, 1953, Mo. Geol. Survey and Water

Eea. Kept. Inv. 14, pi. 1.

Exline cyclothem (including Exline limestone)

Pennsylvanian (Des Moines) : Iowa, Illinois, and Missouri.

L. M. Cilne, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 1, p. 65^-66. 

J. M. Weller, 1942, 111. State Acad. Sci. Trans., v. 35, p. 145.

Exploits series

Ordovician: Newfoundland, Canada.

G. B. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 3-12.

Exshaw shale

Upper Devonian : Alberta, Canada.

P. S. Warren, 1937, Am. Jour. Sci., ser. 5, v. 33, no. 198, p. 456-457.

Eyer member (of Hatter formation) ' 

Middle Ordovician (Chazyan) : Pennsylvania. 

G. M. Kay, 1943, Econ. Geology, v. 38, no. 3, p. W3f 

Fabius group

Devonian or Mississippian: Missouri, Iowa, Illinois, Kentucky, and Indiana. 

J. M. Weller and others, 1948, Geol. Soc. America Bull., v. 59, no. 2, p. 101, Chart 5;

Fagasa gabbro

Pliocene and lower Pleistocene (?): Samoa Islands (Tutuila).

B. A, Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 113-115.

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1296, pi. 1 (geol. map),

Fairbank formation

Pennsylvanian: Wyoming.

G. E. Condra. B. C. Reed, and O. J. Scherer, 1940, Nebr. Geol. Survey Bull. 13, 

p. 2, 3, 32.
126 GEOLOGIC NAMES OF NORTH AMERICA

Fairfax schist

Precambrian(?): Vermont.

E. C. Jacobs, 1935, (abs.) Geol. Soc. America Proc. 1934, p. 85.

Fairholme formation

Devonian: Alberta, Canada.

G. S. Hume and H. H. Beach, 1941, Canada Geol. Survey Paper (Prelim. Map) 41-8.

Fairplay glacial substage

Pleistocene (Wisconsin): Colorado.

Q. D. Singewald, 1950, U. S. Geol. Survey Bull. 955-D, p. 123, 125, pi. 9 [1951].

Fairplay member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 33, fig. 3.

Fairview granodiorite

Jurassic (?) : British Columbia, Canada.

H. S. Bostocb, 1940, Canada Geol. Survey Map 341A.

Fairview Valley formation 

Permian: California. 

O. E. Bowen, Jr., in L. A. Wright and others, 1953, Calif. Jour. Mines and Geology,

v. 49, nos. 1-2, pi. 2. 

O. E. Bowen, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 165, p. 16 (fig. 2),

36-42.

Fairville granite

Pre-Carbonif erous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 34-35.

Fais limestone

Pleistocene: Caroline Islands (Fais).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc. Japan Jour., v. 46, no. 549, p. 347 (correlation table) [English translation 

in library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan 

Hydrog. Office Bull., v. 11, p. 68, table 5 [English translation in library of U. S. 

Geol. Survey, p. 82-83].

Falcon granite gneiss

Precambrian: Colorado.

M. F. Boos, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, p. 1179.

Falcon limestone member (of Lykins formation) 

Permian: Colorado. 

L. W. LeRoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 31, 33.

Falcon sandstone member (of Cook Mountain formation) 

Eocene (Claiborne) : Texas.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, n©. 2, p. 259 

(fig. 2), 263.

Falher member (of Spray River formation)

Lower Cretaceous: Alberta, Canada (subsurface). 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 9.

Falling Bun member (of Sanderson formation) 

Lower Mississippian: Indiana and Kentucky. 

Guy Campbell, 1946, Geol. Soc. America Bull,, v, 57, no, 9, p. 848-849, 857-858.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 127

Falling Springs standstone member (of New Scotland formation) 

Lower Devonian: Pennsylvania.

F. M. Swartz, 1938, (abs.) Geol. Soc. America Bull., v. 49, BO. 12, p. 1923. 

F. M. Swartz in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. Geol. 

Survey, ser. 4, Bull. G 19, p. 57, 67, 83.

Falor formation

Pliocene: California.

G. A. Manning and B. A. Ogle, 1950, Calif. Dept. Nat. Res., Div. Mines Bull. 148, 

p. 14 (fig. 2), 22-25, pi. 1.

Falskebugt beds

Lower Cretaceous (Valanginian): Northeast Greenland.

Wolf Maync, 1949, Meddel. om Gr0nland, bind 133, nr. 3, p. 55-62, 187-192, 281.

Fannettsburg member (of Shippensburg formation)

Middle Ordovician (Bolarian) : Pennsylvania and Maryland.

L. C. Craig, 1949, Geol. Soc.*America Bull., v. 60, no. 4, p. 715 (fig. 1), 722-727.

Faraway Ranch formation 

Cenozoic: Arizona.

H. E. Bnlows, 1951, Tulsa Geol. Soc. Digest, v. 19, p. 105-107 ; 1955, Geol. Soc. 

America Bull., v. 66, no. 10 p. 1217.

Farewell glaciation

Pleistocene (Wisconsin) : Alaska.

A. T. Fernald in T, L. Pew6 and others, 1953, U. S. Geol. Survey CJrc. 289, p. 6-7, 

13 (table 1).

Farewell group

Ordovician (?) : Newfoundland, Canada.

D. M. Baird, 1950, Canada Geol. Survey Paper 50-22, p. 28-32.

Fargo Canyon diorite

Upper Jurassic: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 59-60.

Farmdale loess or substage

Pleistocene (early Wisconsin) : Illinois, Kentucky, and Indiana.

[M. M. Leighton], 1947, in Itinerary State Geologists,' Conference on the loess

deposits, p. 1, 3, 4. 

M. M. Leighton and H. B. Willman, 1950, Jour. Geology, v. 58, no. 6, p. 602, 603.

Farmers siltstone member (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 129-132.

Farmington Canyon complex 

Precambrian: Utah.

A. J. Eardley, 1939, Geol. Soc. America Bull., v. 50, no. 8, p. 1282.

A. J. Eardley and R. A. Hatch, 1940, Jour. Geology, v. 48, no. 1, p. 61-42.

Farragut limestone

Middle Ordovician: Tennessee.

C. E. Prouty, 1946, Am. Assoc. Petroleum Geologists Bull., v. 30, no. 7, p. 1156-1157

Farrington sand member (of Raritan formation) 

Upper Cretaceous: New Jersey.

H. C. Barksdale and others, 1943, The ground-water supplies of Middlesex County, 

New Jersey : N. J. State Water Policy Comm. [Special Rept. 8], p. 104.
128 GEOLOGIC NAMES OF NORTH AMERICA

Fauquier formation

Precambrian: Virginia.

A. S. Furcron, 1939, Va. Geol. Survey Bull. 5*. p. 37-41.

Favel formation

Upper Cretaceous: Manitoba and Saskatchewan, Canada.

S. E. Kirk and others, 1941, Canada Geol. Surrey Map 637A.

E. T. D. Wickenden, 1945, Canada Geol. Survey Mem. 239, p. 23-53.

Favret formation

Middle Triassic: Nevada.

S. W. Muller, H. G. Perguson, and E. J. Eoberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada : U. S. Geol. Survey; Quadrangle Map [GQ 7].

Fayette facies (of Flagstaff formation)

Paleocene, upper: Utah. ;

W. N. Gilliland, 1961, Nebr. Univ. Studies, new ser., no. 8, p. 29.

Fearn Springs sand member (of Wilcox formation in Mississippi; of Nanafalia 

formation in Alabama and Georgia)

Eocene, lower: Mississippi, Georgia, and Alabama.

F. F. Mellen, 1939, Miss State Geol. Survey Bull. 38; p. 38-37. 

Federal sediments

Lower Devonian: Quebec, Canada.

J. E. Gill and P. E. Auger, 1943, Canadian Inst. Mining and Metallurgy Trans., 

v. 46, p. 457, 459.

Feilden group

Lower Permian or Upper Carboniferous: Northwest Territories (Ellesmere 

Island), Canada.

E. G. Blackadar, 1954, Canada Geol. Survey Paper 53-10, p. 15-16. 

Feldt Ranch beds (in Ash Hollow formation)

Pliocene (Ogallala) : Nebraska.

M. K. Elias, 1942, Geol. Soc. America Special Paper 41, p. 141-142.

Feliz granodiorite

Pre-Cretaceous(?) : California.

G. J. Neuerburg, 1953, Calif. Dept. Nat. Ees., Div. Mines Special Eept. 33, p, 7 

(table 1), 12-14, pi. 1.

Fena beds

Eocene: Mariana Islands (Guam).

Eisaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 51, table 4 [English translation in library of U. S. Geol. Survey, p. 61].

Fenimore iron formation

Precambrian: Quebec, Canada.

P. E. Auger, 1954, Canadian Mining and Metall. Bull., v. 47, no. 8, p. 530. 

Fenn formation

Upper Devonian: Alberta, Canada.

J. M. Andrichuk and J. S. Wonfor, 1954, Am. Assoc. Petroleum Geologists Bull., 

v. 38, no. 12, p. 2505.

Fenner granite gneiss

Precambrian (Archean) : California.

J. C. Hazzard and E. F. Dosch, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 309.

Ferdinand limestone

Pennsylvanian (Pottsville) : Indiana.

D. W. Franklin, 1944, 111. State Acad. Sci. Trans., v. 37, nos. 3-4, p. 86, 89.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 129'

Fergusson series

Permian (?): British Columbia, Canada.

C. E. Cairnes, 1937, Canada Geol. Survey Mem. 213, p> 9-13.

Fern Creek formation

Precambrian: Michigan. i

F. J,,Pettijohn and F. A. Hildebrand, 1941, (abs.) Geol. Soc. America Bull., v, 52,

no. 12, pt. 2, p. 1927. 

F. J. Pettijohn, 1943, Jour. Geology, v. 51, no. 6, p. 397.

Ferndale sandstone

Pliocene, upper: California.

H. D. MacGinitie, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 633.

Fernow gneiss

Pre-Ordovician(?) : Washington.

B. A. Youngberg and T. L. Wilson, 1952, Bcon. Geology, v. 47, no. 1, p. 3.

Ferriman series

Precambrian: Newfoundland (Laborador) and Quebec, Canada.

J. K. Gustafson and A. E. Moss, 1953, Mining Eng., v. 5, no. 6, p. 595(table 1).

Ferry Lake anhydrite

Lower Cretaceous (Comanche series) : Subsurface in Arkansas, Louisiana,

and Texas. 

R. W. Imlay, 1940, Ark. Geol. Survey Inf. Circ. 12, p. 4,''35-36.

Fiedmont granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 134.

Fifes Peak andesite

Miocene (Keechelus andesite series): Washington.

W. C. Warren, 1940 (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 2034-2035 ; 

1941, Jour. Geology, v. 49, no. 8, p. 800-802.

Figuery granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 133. ,

File granite ! 

Precambrian: Manitoba, Canada. 

J. M. Harrison, 1949, Canada Geol. Survey Mem. 250, p. 19, 20.

Filer sandstone lentil (in Ainherstburg formation) 

Middle Devonian: Michigan (subsurface). 

K. K. Landes, U. S. Geol. Survey Circ. 133, p. 9,12.

Filisola series

Miocene, lower: Istmo de Tehuantepee, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no, 5, p. 281, 282-283, correlation 

chart.

Fillmore limestone , , . . 

Lower Ordovician (Canadian) : Utah and Nevada. 

L. F. Hintze, 1951, Utah Geol. Mineralog. Survey Bull. 39^ p. 13-16.
130 GEOLOGIC NAMES OF NORTH AMERICA

Final shales

Precambrian (Chuaran): Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107,113.

Finger Bay volcanics

Paleozoic(?) : Alaska (Aleutian Islands).

E. E. Coats, 1947, U. S. Geol. Survey Alaskan Volcano Inv. Bcpt. 2, pt. 5, p. 75-76.

Finger Lakes stage

Upper Devonian (Senecan) : New York.

G. A. Cooper and others, 1942, Geol. Soc. America Bull., v. 53, no. 12, pt. 1, p. 1734, 

Chart 4.

Finnef jeld complex

Precambrian: West Greenland.

Asger Berthelsen, 1950, Meddel. Dansk Geol. Foren., bind 11, p. 559-560.

Fire Clay Hill bentonitic shale (in Chinle formation) 

Upper Triassic: Utah. 

P. D. Proctor, 1953, Utah Geol. Mineralog. Survey Bull. 44, p. 10-11,19-22.

Firemoon limestone member (of Piper formation)

Middle Jurassic: Montana (subsurface and surface) and North Dakota (subsurface).

J. W. Nordquist, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., p. 97, 

101-102.

Fish Creek gypsum

Miocene: California.

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Ees., Div. Mines Bull. 170, chap. 2, p. 22.

Fish Creek shale

Lower Silurian : New York, and Ontario, Canada.

D. W. Fisher, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 9, p. 1987-1988.

Fishells conglomerate

Mississippian: Newfoundland, Canada.

D. M. Baird, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 86.

Fishels limestone

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 31.

Fisk formation

Permian (Wolfcamp) : Texas.

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 95-96.

Fitt Trace marl

Eocene: Trinidad, British West Indies.

H. G. Kugler and others, [1939], Geological conference in Trinidad; notes on the

excursions: Petroleum Assoc. Trinidad, cross section through eastern Central

Range and northern depression. 

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special Pub. 24,

p. 2, 3.

Five Oaks limestone member (of Cliffleld formation) 

Middle Ordovician: Virginia. 

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 863.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 131

Fizzle Flat lentil (in Terlingua formation) 

Cretaceous (Gulf series) : Texas. 

C. G. Moon, 1953, Geol. Soc. America Bull., v. 64, no. 2, p. 164, 169-170, fig. 2.

Flag Rock formation

Precambrian: South Dakota.

T. A. Dodge, 1942, Geol. Soc. America Bull., v. 53, no. 4, p. 563.

J. A. Noble and J. O. Harder, 1948, Geol. Soc. America Bull., v. 59, no. 9, p. 944, 

949-952, pi. 1.

Flamand limestone member (of Saint Bartholomew formation) 

Eocene, middle: St. Bartholomew, French West Indies. 

E. A. Christman, 1953, Geol. Soc. America Bull., v. 64, no. 1, p. 69-70.

Flannigan cyclothem

Pennsylvanian: Illinois.

W. A. Newton and J. M. Weller, 1937, 111. State Geol. Survey Rept. Inv. 45, p. 9, 10.

Flat Creek cyclothem

Pennsylvanian: Illinois.

H. R. Wanless, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 9, p. 1764 

(table 2).

Flatiron coquinite member (of Riceville formation) 

Upper Devonian: Pennsylvania.

Bradford Willard in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. 

Geol. Survey, ser. 4, Bull. G 19, p. 14 (footnote), 278 (footnote).

Flat Bock tongue (of San Fernando formation) 

Oligocene: Trinidad, British West Indies. 

R. M. Stainforth, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 7, p. 1318.

Flat Bock Creek granite

Age not stated: Virginia.

J. P. Meador, 1949, (abs.) Va. Acad. Sci. Proc. 1948-1949, p. 137.

Flavrian granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 127-128.

Flavrian Lake granite 

See Flavrian granite.

Fleming chert breccia

Precambrian (Proterozoic) : Quebec and Newfoundland (Labrador), 

Canada.

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 8-9.

Fleming cyclothem or formation

Pennsylvanian (Des Moines) : Kansas.

G. B. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 

23; 1938, Kans. Acad. Sci. Trans., v. 41, p. 193, 195.

Fleming Inlet series

Triassic: Northeast Greenland.

Otto NordenskjSld, 1907, Meddel. om Gr0nland, hefte 28, pt. 5, p. 175-177.
132 GEOLOGIC NAMES OF NORTH AMERICA

Fletcher anhydrite member (of Salado formation) 

Permian: Subsurface in New Mexico and Texas. 

W. B. Lang, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 1, p. 69, 75-78.

Fleur de Lys group

Precambrian: Newfoundland, Canada.

D. M. Batrd, 1951, Canada Geol. Survey Paper 51-21, p. 13-16.

Flint Hill sandstone member (of Fort Scott formation) 

Pennsylvanian (Desmoinesian) : Missouri.

A. G. Unklesbay in F. C. Greene and M. V. Searight, 1949, Md. Geol. Survey and 

Water Res. Rept. Inv. 11, p. 6, fig. 1.

Florentine formation

Oligocene, upper: Dominican Republic.

P. J. Bermudez, 1949, 'Cushman Lab. Foram. Research Special Pub. 25, p. 27.

Floride dolomite

Middle Silurian: Utah.

F. W. Osterwald, 1953, U. S. Geol. Survey Trace Elements Inv. Rept. TEI-330, p. 105.

Flour Bluff sand

Oligocene: Texas (subsurface).

Alexander Deussen and K. D. Owen, 1939, Am. Assoc. Petroleum Geologists Bull., 

v. 23, no. 11, p. 1634.

Flour Sack member (of Bright Angel shale) 

Lower and/or Middle Cambrian: Arizona. 

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 82-84.

Fly sandstone

Pennsylvanian (Monongahela) : Ohio.

A. T. Cross, W. H. Smith, and Thomas Arkle, Jr., 1950, Field guide for the special 

field conference on the stratigraphy, sedimentation and nomenclature of the Upper 

Pennsylvanian and Lower Permian strata (Monongahela, Washington and Greene 

series) in the northern portion of the Dunkard Basin of Ohio, West Virginia, and 

Pennsylvania: W. Va. Geol. and Bcon. Survey, Section 26 (upper part).

Fogo group

Ordovician(?) : Newfoundland, Canada.

D. M. Baird, 1950, Canada Geol. Survey Paper 50-22, p. 15-28.

Foldvik Creek formation

Lower Carboniferous (?) : Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 95 ; nr. 2, p. 244.

Foley formation

Pliocene: Louisiana (subsurface).

P. H. Jones in P. H. Jones, A. N. Turcan, Jr., and H. E. Slqbitzke, 1954, La. Dept 

Conserv. Geol. Bull. 30, p. 56-61.

Fonda limestone member (of Tribes Hill formation) 

Lower Ordovician (lower Canadian) : New York. 

D, W. Fisher, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 76 (fig. 2), 89-90.

Fond Moustique tuffs

Oligocene, lower: Martinique, French West Indies.

Louis Barrab6, 1928 [France] Office national des combustibles liquides Annales,

3e annee, no. 1, p. 9-11, 26. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1593.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 133

Fonteuelle member (of Green River formation) 

Eocene, middle: Wyoming. 

J. H. Donovan, 1&50, Wyo. Geol. Assoc. Guidebook 5th Ann, Field Conf., p. 63.

Fool Greek conglomerate 

Oligocene(?): Utah.

P. W. Ohristiansen, 1951, Utah Geol. Mineralog. Survey [Utah Gcol. Soc.] Guidebook 

6, p. 9,10-11.

Forbes formation

Upper Cretaceous (Chico) : California.

J. M. Kirby, 1942, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 26, no. 5, p. 899; 

1943, v. 27, no. 3, p. 282-283.

Forbush Creek facies (of New Providence formation) 

Lower Mississippian: Kentucky. 

H. J. Klepser, 1937, Ohio State Univ. Abs. Doctors' Dissert. 24, p. 182-183.

Ford River granite

Precambrian (Huronian) ; Michigan.

R. M. Dickey, J938, Jour. Geology, v. 46, no. 3, pt. 1, p. 321-335.

Forestville member (of Canadaway formation) 

Upper Devonian (Senecan) : New York. 

I. H. Tesmer, 1954, Dissert. Abs., v. 14, no. 12, p. 2317, 2318.

Forge Hollow member (of Bertie formation) 

Upper Silurian (Cayugan) : New York. 

L. V. Rickard, 1955, N. Y. Geol. Assoc. Guidebook 27th Ann. Meeting, p. 7.

Forlorn Hope shale

Lower Cambrian: Nevada.

J. P. Mason in A. W. Grabau, 193I6, Paleozoic formations in the light of the pulsation 

theory, v. 1, Lower and Middle Cambrian pulsations: 2d ed., Peiping, China, 

University Press, Natl. Univ. Peking, p. 274-276.

Forman volcanics 

Miocene: Nevada. 

V. P. Gianella, 1934, Mining and Metallurgy, v. 15, no. 331, p. 299.

Forreston member (of Grand Detour formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., fig. 3. <

Fort Ann limestone member (of Tribes Hill formation) 

Lower Ordovician: New York.

R. R. Wheeler, 1941, (abs.) Geol. Soe. America Bull., v. 52, no. 12, pt. 2, p. 1938- 

1939 ; 1942, Am. Jour. Sci., v. 240, no. 7, p. 518, 522.

Fort Buchanan formation

Upper Cretaceous: Arizona.

A. A. 'Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 69.

Fort Chimo group

Precambrian: Quebec, Canada.

P. B. Auger, 1954, Canadian Mining and Metall. Bull., v. 47, no. 8, p. 530,
134 GEOLOGIC NAMES OF NORTH AME.RICA

Fort Crittenden formation

Upper Cretaceous: Arizona.

A. A. Stoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 297 (table) ; 1949, 

Geol. 'Soc. America Mem. 38, p. 59-60.

Fort Hunter sandstone member (of Mahantango formation) 

Middle Devonian: Pennsylvania.

Bradford Willard in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1989, Pa. 

Geol. Survey, ser. 4, Bull. G 19, p. 188,139,180-182.

Fortin series

Devonian: Quebec, Canada.

H. W. McGerrigle, 1946, Royal Soc. Canada Trans., sec. 4, v. 40, p. 47-49.

Fort Johnson member (of Tribes Hill formation)

Lower Ordovician (lower Canadian) : New York.

D. W. Fisher, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 76 (fig. 2), 84-85.

Fort Kent shale

Lower Devonian: Maine, and New Brunswick, Canada.

O. O. Nylander, 1940, Geological formations of the St. Johns River valley, northern 

Maine and New Brunswick: Caribou, Maine, p. 3-4.

Fort Mountain gneiss

Precambrian: Georgia.

A. S. Furcron, K. H. Teague, and J. L. Calver, 1946, (abs.) Geol. Soc. America 

Bull., v. 57, no. 12, pt. 2, p. 1195; 1947, Ga. Geol. Survey Bull. 53, p. 9-11.

Fort Nelson formation

Upper Cretaceous: British Columbia and Yukon, Canada. 

E. D. Kindle, 1944, Canada Geol. 'Survey Paper 44-16, p. 13-15.

Fort Steele formation

Precambrian (Proterozoic) : British Columbia, Canada. 

H. M. A. Rice, 1937, Canada Geol. Survey Mem. 207, p. 4-6.

Fortune formation

Devonian: Missouri.

J. G. Grohskopf, E. It. Clark, and S. P. Ellison, Jr., 1943, Mo. Geol. Survey and 

Water Res. 62d Blenn. Kept., App. 4, p. 9-15.

Fortune tuffs and cherts

Ordovician, Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 9.

Fortune Brook formation

Lower and Middle Cambrian: Newfoundland, Canada.

T. N. Walthier, 1950. N. Y. Acad. Sci. Trans., ser. 2, v. 12, no. 7, p. 210.

Fort Vermilion member (of Slave Point formation) 

Middle Devonian: Alberta, Canada. 

J. Law, 1955, Alberta Soc. Petroleum Geologists Jour., v. 3, no. 6, p. 82.

Fort Wallace ash bed (in Ash Hollow member of Ogallala formation) 

Pliocene: Kansas.

Ada Swineford, J. C. Frye, and A. B. Leonard, 1955, Jour. Sed. Petrology, v. 25, no. 4, 

p. 253-254, fig. 1.

Fossil Brook formation

Middle Cambrian (Loch Lomond) : New Brunswick, Canada.

A, O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 69-72.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 135

Fossil Hill formation

Middle Silurian (Niagaran) : Ontario, Canada.

G. S. Hume, 1925, Canada Geol. Survey Mem. 145, p. 37.

T. B. Bolton, 1953, Canada Geol. 'Survey Paper 53-23, p. 12-13.

Fossill Mountain formation

Upper Jurassic (Oxfordian) : East Greenland.

Alfred Rosenkrantz in Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2,

nr. 1, p. 146-147. 

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 254.

Foulke Cove slate and shale

Ordovician: Newfoundland, Canada.

G. E. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 7.

Fountain Peak rhyolite

Miocene (?) : California.

J. C. Hazzard, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 4, p. 33, 

pi. 2.

Fourchu group

Precambrian (Proterozoic) : Nova Scotia, Canada. 

L. J. Weeks, 1954, Canada Geol. Survey Mem. 277, p. 16-25.

Four Mile Brook member (of Heppel sandstone) 

Upper Devonian (Senecan) : Quebec, Canada. 

E. M. Kindle, 1938, Bull. Am. Paleontology, v. 24, no. 82, p. 73 (39).

Four Mile Dam formation

Middle Devonian: Michigan.

G. A. Cooper and A. S. Warthln, 1941, Washington Acad. Sci. Jour., v. 31, no. 6, p. 260,

Fourniere sediments

Precambrian: Quebec, Canada.

H. C. Gunning, 1937, Canada Geol. Survey Mem. 206, p. 19.

Fox flows

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. F. Henderson and I. C. Brown, 1950, Canadian Inst. Mining and Metallurgy Trans., 

v. 53, p. 418.

Fox Canyon member (of San Pedro formation) 

Pleistocene, lower: California.

T. L. Bailey, 1954, in Pacific Petroleum Geologist, v. 8, no. 9, p. 1. 

R. G. Thomas and others, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 6, 

p. 20, pi. 2.

Fra Cristobal formation

Middle Pennsylvanian: New Mexico.

M. L. Thompson, 1948, Kans. Univ. Paleont. Contr. 4, Protozoa, art. 1, p. 73, 74-75.

Fraileys shale

Mississippian (Chester) : Kentucky.

A. C. McFarlan and others, 1955, Ky. Geol. Survey, ser. 9, Bull. 16, p. 18.

Franklin Creek basalt

Triassic: British Columbia, Canada.

J. S. Stevenson, 1945, British Columbia Minister Mines Ann. Rept. 1944, p. A-145.

Franz Josef beds

Lower Paleozoic: Northeast Greenland.

J. M. Wordie, 1927, Geog. Jour., v. 70, no. 3, p. 252.
136 GEOLOGIC NAMES OF NORTH AMERICA

Frazier Well gravel

Pre-Pleistocene: Arizona.

Donaldson Koons, 1948, Science, v. 107, no. 2784, p. 475-476.

Freedhem tonalite

Precambrian (Algoman) : Minnesota.

M. S. Woyskl, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1002, 1010, pi. 1.

Freemans Bay limestone

Miocene: Trinidad, British West Indies.

Ernest Lehner, 1&35, [France] Office national des combustibles llquides Annales,

lOe annge, no. 4, p. 717 (table).

H. H. Suter, 1951, Colonial Geology and Min, Bes., v. 2, no. 3, p. 204 (table 12) 

[1952].

Frenchburg siltstone member (of Brodnead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 180, 182-184.

French Flat sandstone

Miocene, upper, to Pliocene: California.

D. I. Axelrod, 1950, Carnegie Inst. Washington Pub. 590, pi. 1.

Frenchman formation

Upper Cretaceous: Saskatchewan, Canada.

G. M. Furnival, 1942, Canada Geol. Survey Paper (Prelim. Map) 42-5.

Frenchmans Bay series 

Silurian: Maine.

G. H. Chadwick, 1944, N. Y. Acad. Sci. Trans., ser. 2, v. 6, no. 6, p. 172, 176-177.

Frensley limestone

Pennsylvanian (Lampasas) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum'Geologists Bull., v.'22, no. 7, p. S54 (fig. 1).

E. M. Jeffords, 1942, Kans. State Geol. Survey Bull. 41, pt. 5, p. 250.

Fresh Pond granodiorite

Precambrian: Newfoundland, Canada.

B. E. Van Alsttne, 1948, Newfoundland Geol. Survey Bull. 23, p. 17.

Fresnal group

Pennsylvanian (Virgil): New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 73-79.

Fresnian stage

Eocene, late: California.

V. S. Mallory, 1953, (abs.) Jour. Paleontology, v. 27, no. 6, p. 903.

Fresnoiau stage

See Fresnian stage.

Friant formation

Miocene: California.

G. H. Jones, 1940, Am. Geophys. Union Trans., v. 21, pt. 1, p. 62 (fig. 2), 66.

Friendship Quarry marl (of Navet formation)

Eocene, lower or middle: Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special 

Pub. 24, p. 2.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-19 5 5 137

Frontiere group

Ordovician(?) : Quebec, Canada.

Jacques Be*land, 1952, Quebec Dept. Mines Prelim. Kept. 279, p. 6.

Frontier Lake conglomerate

Precambrian: Saskatchewan, Canada.

A. M. Christie, 1952, Canada Geol. Survey Mem. 269, p. 14.

Frood series

Precambrian: Ontario, Canada.

Anonymous, 1937, Canadian Mining Jour., v. 58, no. 11, p. 592.

Fulda limestone

Pennsylvanian (Pottsville) : Indiana.

D. W. Franklin, 1944, 111. State Acad. Sci. Trans., v. 37, nos. 3-4, p. 86, 88-89,

Funks formation

Upper Cretaceous (Chico) : California.

J. M. Kirby, 1942, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 26, no. 5, p. 899; 

1943, v. 27, no. 3, p. 284.

Funk Valley formation

Upper Cretaceous: Utah.

B. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 122, 128.

Furnace Creek formation

Miocene or Pliocene: California.

H. D. Curry in D. I. Axelrod, 1940, Jour. Geology, v. 48, no. 5, p. 527-528, 531.

Furnace Creek quartz diorite gneiss 

Precambrian: Pennsylvania.

T. V. Buckwalter, 1955, Pittsburgh Geol. Soc. Field Guidebook Appalachian Geology, 

p. 93, 95.

Fuyk sandstone member (of Rondout waterlime) 

Upper Silurian: New York.

G. H. Chadwick, 1940, N. Y. State Geol. Assoc. 16th Ann. Meeting Field Guide 

Leaflets, p. 2 ; 1944, N. Y. State Mus. Bull. 336, p. 45-51 [1946].

Fyns S0 dolomite

Age unknown : North Greenland.

P. J. Adams and J. W. Cowie, 1953, Meddel. om Gr0nland, bind 111, nr. 7, p. 9, 11-12.

Gadsden limestone

Eocene (Jackson) : Florida (subsurface).

W. E. Moore, 1955, Fla. Geol. Survey Bull. 37, p. 42-44.

Gaikema sandstone member (of Tuxedni formation) 

Middle Jurassic: Alaska.

C. E. Kirschner and D. L. Minard, 1948, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 95 [1949].

Gailor dolomite

Lower Ordovician: New York.

D. W. Fisher and G. F. Hanson, 1951, Am. Jour. Sci., v. 249, no. 11, p. 807-t808.

Gaines group

Upper Cretaceous: California.

F. M. Anderson, 1937, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, 

p. 1612.
138 GEOLOGIC NAMES OF NORTH AMERICA

Gainesville sandstone (in Blackjack Knob member of Theodosia formation) 

Lower Ordovician: Missouri and Arkansas.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 27.

Galantry breccia

Post-Cambrian: St. Pierre Island, French North America.

Edgar Aubert de la Rfie, 1932, Rev. de geographic physique et de geologic dynamique, 

v. 5, fasc. 4, p. 427, 429, 452.

Galata ash

[Recent]: Montana, and Alberta, Canada.

Leland Horberg and R. A. Robie, 1955, Geol. Soc. America Bull., v. 66, no. 8, p. 949-955.

Galdock beds 

Galdog beds or formation 

See Ngardok beds.

Galeota group

Eocene (?) : Trinidad, British West Indies.

E. H. Cunningham-Craig, 1905, Trinidad Legislative Council Paper no. 25 of 1905, p. 7.

Galera formation

Lower Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schwelzer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 32.

Galera Grit member (of Galera formation)

Lower Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 32.

Galet beds

Middle Ordovician : Quebec, Canada.

G. W. Sinclair, 1953, Am. Jour. Sci., v. 251, no. 12, p. 847.

Galkyoku limestone

See Ngarekeukl limestone.

Gallaway beds

Miocene: California.

C. E. Weaver, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 630, 631 

(fig. 280).

Galloway sandstone member (of Gething formation) 

Lower Cretaceous: British Columbia, Canada. 

F. H. McLearn and E. J. W. Irish, 1944, Canada Geol. Survey Paper 44-15, p. 8.

Gambler group

Triassic(?) and/or older: British Columbia, Canada.

J. E. Armstrong, 1954, Canada Geol. Survey Paper 53-28, p. 2-3.

Gamboa formation

Oligocene: Panama Canal Zone.

Karl Sapper, 1905, Petermanns Mitt. Erganzungsbd. 32, Heft 151, p. 39, 56, 

pi. 3 (cross section 29).

Game Lodge granite

Precambrian: South Dakota.

G. L. Taylor, 1935, Am. Jour. Sci., 5th ser., v. 29, no. 171, p. 281-282,
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 139

Gamerco formation

Recent: New Mexico.

L. B. Leopold and C. T. Snyder, 1951, D. S. Geol. Survey Water-Supply Paper 1110-A, 

p, 6-9.

Gamsetu agglomerate

See Kameset (Gamusetsu) agglomerate.

Gamusa beds

Lower Pennsylvania!!: Sonora, Mexico.

Charles Schuchert, 1935, Historical geology of the Antillean-Caribbean region: New 

York, John Wiley and Sons, p. 138.

Gander Lake series

Silurian: Newfoundland, Canada.

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 82.

Ganteaume conglomerate

Paleocene: Trinidad, British West Indies.

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 193, table 5 [1952].

Gap Ridge sandstone member (of Stanley formation) 

Pennsylvanian: Arkansas.

N. H. Steam in J. M. Hansell and J. C. Reed, 1935, Am. Inst. Mining and Metall. 

Eng. Trans., v. 115, p. 245 ; 1936, Econ. Geology, v. 31, no. 1, p. 12-15.

Garas beds

See Garzas beds.

Garbutt formation

Lower Cretaceous: British Columbia and Yukon, Canada. 

E. D. Kindle, 1944, Canada Geol. Survey Paper 44-16, p. 10.

Garceno sandstone member (of Cook Mountain formation) 

Eocene (Claiborne) : Texas.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, p. 259 

(fig. 2), 261-262.

Garcia formation

Pennsylvanian (DesMoines) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 50-51.

Gardar formation

Precambrian: Southwest Greenland.

R. D. Crommelin, 1937, Meddel. om Gr0nland, bind 113, nr. 1, p. 6.

C. E. Wegmann, 1938, Meddel. om Gr0nland, bind 113, nr. 2, p. 14, 60-123, 134.

Garden Island formation

Lower Devonian: Michigan.

G. M. Ehlers in K. K. Landes, G. M. Ehlers, and G. M. Stanley, 1945, Mich. Dept. 

Conserv. Geol. Survey Div. Pub. 44, Geol. Ser. 37, p. 34, 35, 73-80.

Garim limestone

Pleistocene: Caroline Islands (Garim, island off Yap).

Risaburo Tayama, 1935, Topography, geology, and coral reefs of the Yap Islands:

Tohoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no.

19, p. 27-29 [English translation in library of U. S. Geol. Survey, p. 24-25] ; 1952,

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 63, table 4

[English translation in library of U. S. Geol. Survey, p. 74].

426779 57 10
140 GEOLOGIC NAMES OF NORTH AMERICA

Garland Peak syenite

Carboniferous (?) (White Mountain magma series) : New Hampshire. 

Alonzo Quinn, 1937, Geol. Soc. American Bull., v. 48, no. 3, p. 389.

Garlock series

Permian: California.

T. W. Dibblee, Jr., 1952, Calif. Dept Nat. Res., Div. Mines Bull. 160, p. 12, 15-19.

Garnavillo member (of Guttenberg formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs 3, 9.

Garnet Canyon tongue

Lower and/or Middle Cambrian: Arizona.

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 92.

Garo sandstone

Jurassic (?) : Colorado.

D. B. Gould and others, 1947, in Rocky Mtn. Assoc. Geologists Guidebook Field Conf.,

June 16-19, p. 39. 

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 47-48.

Garrison Hills granite

Upper Silurian or younger: Newfoundland, Canada. 

W. B. Jewell, 1939, Newfoundland Geol. Survey Bull. 17, p. 11.

Gartra grit member (of Stanaker formation) 

Upper Triassic: Utah.

H. D. Thomas and M. L. Krueger, 1946, Am. Assoc. Petroleum Geologists Bull., 

v. 30, no. 8, pt. 1, p. 1271, 1274.

Garudokku beds 

Garukijokku limestone

See Ngarekeukl limestone.

Garzas beds

Upper Cretaceous: California.

F. M. Anderson, 1937, (abs.) Am, Assoc. Petroleum Geologists Bull., v. 21, no. 12, 

p. 1612; 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 185 (fig. 69), 

186 [preprint 1941].

Gassaway member (of Chattanooga shale) 

Upper Devonian: Tennessee and Alabama. 

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 884, 886.

Gateway Canyon member (of Muav formation) 

Lower and/or Middle Cambrian: Arizona. 

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 105-109.

Gatufia formation

Pleistocene ( ?) : New Mexico and Texas.

W. B. Lang in T. W. Robinson and W. B. Lang, 1938, N. Mex. State Engineer 12th-13th 

Bienn. Kept., p. 84-85 [1939].

Gatuncillo formation

Eocene, middle and upper: Panama and Panama Canal Zone.

T. F. Thompson, 1944, Geological explorations in the vicinity of Rio Quebrancha for

the Panama Cement Company : Panama Canal, Special Eng. Div., p. 12-13. 

W. P. Woodring and T. F. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull.,

v. 33, no. 2, p. 227-228.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 141

Gautier formation

Upper Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1950, Asociaci6n Venezolano de Geologia. Mineria -y Petr61eo Bol.,

tomo 2, no. 1, p. 48 (correlation chart). 

Hang Bolli, 1951, Jour. Paleontology, v. 25, no. 2, p. 193.

Gavilan Peak gabbro

Jurassic(?) : California.

E. F. Osborn, 1939, Geol. Soc. America Bull., v. 50, no. 6, p. 925-926.

Geddes limestone

Middle Cambrian: Nevada.

H. E. Wheeler and D. M. Lemon, 1939, Nev. Univ. Bull., Geology and Mining Ser., 

no. 31, p. 20-23.

Geers Corners gabbro

Precambrian: New York.

A. F. Buddington, 1936, 16th Internat. Geol. Cong. Kept, v. 1, p. 348; 1939, Geol. 

Soc. America Mem. 7, p. 57, 59, 61

Geiser Quarry member (of Dutchtown formation) 

Lower Ordovician: Missouri.

H. S. McQueen, 1937, Mo. Geol. Survey and Water Res. 59th Bienn. Rept.App. 1, 

p. 18-19.

Gemuk group

Carboniferous (?) to Lower Cretaceous: Alaska.

W. M. Cady and others, 1955, U. S. Geol. Survey Prof. Paper 268, p. 27-34.

Genoa member (of Oneota formation) 

Lower Ordovician: Wisconsin. 

G. O. Raasch, 1952, 111. Acad. Sci. Trans., v. 45, p. 88-90, 91-92.

Gensolle tuffs

Miocene: Guadeloupe (Grande Terre), French West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581.

Geode Creek basalt

Miocene and/or Pliocene: Wyoming.

A. D. Howard, 1937, Geol. Soc. America Special Paper 6, p. 19-21, 78.

Geoffrey formation

Upper Cretaceous : British Columbia, Canada. 

J. L .Usher, 1952, Canada Geol. Survey Bull. 21, p. 28.

George Pond breccia

Silurian: Quebec, Canada.

T. H. Clark, 1936, Canadian Field Naturalist, v. 50, no. 3, p. 32-33.

Germaine Brook granite

Pre-Carboniferous : New Brunswick, Canada.

F. J. Alcock, [1938], Canada Geol. Survey Mem. 216, p. 26, map.

Germania formation

Upper Devonian: Pennsylvania and New York.

J. G. Woodruff, 1942, N. Y. State Mus. Bull. 326, p. 47-50.

Getaway limestone member (of Cherry Canyon formation) 

Permian : Texas and New Mexico. 

P. B. King in A. K. Miller and W. M. Furnish, 1940, Geol. Soc. America Special Paper

26, p. 9. 

P. B. King 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 580-581, pi. 2.
142 GEOLOGIC NAMES OF NORTH AMERICA

Getmuna rhyolite group

Eocene: Alaska.

W. M. Cady and others, 1955, D. S. Geol. Survey Prof. Paper 268, p. 50-53.

Getsuyoto beds

See Getuyoto beds.

Getuyoto beds

Miocene: Caroline Islands (Truk).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 69, table 5 [English translation in library of D. S. Geol. Survey, p. 84].

Geuda Springs shale member (of Wellington formation) 

Permian: Kansas. 

W. A. Ver Wiebe, 1937, Wichita Municipal Univ. Bull., v. 12, no. 5, p. 12-14.

Ghost Range complex

Precambrian (pre-Algoman) : Ontario, Canada.

Jack Satterly, 1954, Ontario Dept. Mines Ann. Kept., v. 62, pt. 7, p. 15-16.

Gibbons conglomerate lentil (in Marble Falls formation) 

Lower Pennsylvanian: Texas. 

F. B. Plummer, 1945, Tex. Univ. Bur. Econ. Geology Pub. 4401, p. 65-66.

Gibson limestone member (of Grindstone Creek formation) 

Middle Pennsylvanian (Strawn): Texas.

H. T. Mann in R. J. Cordell, H. J. Fitzgeorge, and J. B. Sparks, 1954, Abilene Geol. 

Soc. Guidebook, p. 22, fig. 16.

Gila cyclothem (including Gila limestone) 

Pennsylvanian: Illinois. 

W. A. Newton and J. M. Weller, 1937, 111. State Geol. Survey Kept. Inv. 45, p. 27-28.

Gilbert andesite

Pliocene: Nevada.

H. G. Ferguson, S. W. Muller, and S. H. Cathcart, 1953, Geology of the Coaldale 

quadrangle, Nevada : U. S. Geol. iSurvey Geol. Quadrangle Map [GQ 23].

Gile Mountain formation

Middle Ordovician (?) : Vermont and New Hampshire. 

C. G. Doll, [1945?], Vt. State Geologist 24th Kept., p. 18-19.

Giles Cove formation

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 10-11.

Gillies Lake porphyry

Precambrian (Algoman) : Ontario, Canada.

G. D. Furse, 1948, in Structural geology of Canadian ore deposits: Canadian Inst. 

Mining and Metallurgy, p. 487.

Oilman sandstone member (of Leadville dolomite) 

Mississippian: Colorado.

Ogden Tweto and T. S. Lovering, 1947, Colo. Min. Res. Board [Bull.], p. 380 (chart) 

Ogden, Tweto, 1949, 'Colo. Sci. Soc. Proc., v. 15, no. 4, p. 177-184, table 1.

Ginseng siltstone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 151-153.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 143

Glacier Park facies (of Belt series)

Precambrian: Alberta, Canada; and Montana.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p. 1877

Glamorgan granite gneiss

Precambrian: Ontario, Canada.

Jack Satterly and D. F. Hewitt, 1955, Ontario Dept. Mines Geol. Clrc. 2, p. 4.

Glasco limestone lentil (of Rondout waterlime) 

Upper Silurian: New York. 

G. H. Chadwick, 1944, N. Y. State Mas. Bull. 336, p. 44-51 [1946].

Glass Mountain lava 

Recent: California. 

C. A. Anderson, 1941, Calif. Univ. Dept. Geol. Sci. Bull., v. 25, no. 7, p. 374, 375-376

Glenbrooke shale

Silurian: Quebec, Canada.

T. H. Clark, 1936, Canadian Field Naturalist, v. 50, no. 3, p. 33.

Glendale member (of Denmark formation)

Middle Ordovician (Trentonian) : New York.

P. A. henoweth, 1952, Geol. Soc. America Bull., v. 63, no. 6, p. 530-531.

Glendo shale

Permian: Wyoming and South Dakota.

G. B. Condra, E. C. Reed, and O. J. Scherer, 1940, Nebr. Geol. Survey Bull. 13, 

p. 2, 4, 45.

Glendora volcanics

Miocene: California.

J. S. Shelton, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 63.

Glen Ellen formation

Pliocene (?) and Pleistocene: California.

C. B. Weaver, 1949, Geol. Soc. America Mem. 35, p. 16 (table 3), 98-99.

Glen Falls formation

Lower Cambrian (Hanfordian) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 64-66

Glenhaven member (of Guttenberg formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook l«th Ann. 

Field Conf., figs. 3, 9.

Glenlyon granodiorite

Upper Jurassic or Cretaceous (?): Yukon, Canada. 

J. R. Johnston, 1936, Canada Geol. Survey Mem. 200, p. 14.

Glennon limestone member (of Lykins formation) 

Permian: Colorado. 

L. W. LeRoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 31, 36-10.

Glenwood series

Precambrian: Quebec, Canada.

H. J. Conolly and R. C. Hart, 1936, Canadian Inst. Mining and Metallurgy Trans., 

v. 39, p. 11.
144 GEOLOGIC NAMES OF NORTH AMEBICA

Glenwood tongue (of Weber sandstone) 

Pennsylvanian to Permian: Colorado.

J. W. Vanderwilt, 1953, in Rocky Mtn. Assoc. Geologists Guidebook Field Conf.f 

May 14-16, p. 15, fig. facing p. 12.

Glenwood tuff

[Quaternary]: Hawaiian Islands (Hawaii).

J. B. Stone, 1926, Bernice P. Bishop Mus. Bull. 33, p. 26, 27.

C. K. Wentworth, 1938, Hawaiian Volcano Observatory 3d Special Kept., p. 55-56

Glenwood Canyon member (of Dotsero formation) 

Upper Cambrian: Colorado.

N. W. Bass and S. A. Northrop, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, 

no. 5, p. 897-899.

Gloria formation

Pliocene, middle: Baja California, Mexico.

I. F. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p. 1780-1781.

Goat Island member (of Lockport formation)

Middle Silurian (upper Niagaran) : New York.

B. F. Howell and J. T. Sanford, 1947, Wagner Free Inst. Sci. Bull., v, 22, no. 4, p. 34.

Goat River horizon (of McBride group) 

Precambrian: Alberta, Canada.

M. K. Sorensen, 1955, Alberta Soc. Petroleum Geologists Guidebook 5th Ann. Field 

Conf., p. 57.

Goat Rock pyroclastic deposits 

Quaternary: Washington. 

Jean Verhoogen, 1937, Calif. Univ. Dept Geol. Sci. Bull., T. 24, no. 9, p. 274-277.

Goat Seep limestone

Permian (Guadalupe series) : Texas and New Mexico.

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 588-589, 

593, pi. 2.

Gobbler formation

Pennsylvanian (Morrowan?-Missourian) : New Mexico.

L. C. Pray, 1954, N. Mex. Geol. Soc. Guidebook 5th Field Conf., p. 93.

Goble volcanic series

Eocene, upper: Oregon and Washington.

W. C. Warren, Hans Norbisrath, and R. M. Grivetti, 1945, U. S. Geol. Survey Oil 

and Gas Inv. Prelim. Map 42.

Goddard shale member (of Springer formation) 

Pennsylvanian: Oklahoma. 

M. G. Cheney and others, 1945, Am. AssoO. Petroleum Geologists Bull., v. 29," no. 2,

p. 143. 

H. D. Miser and others, 1954, Geologic Map of Okla. (1:500,000), U. S. Geol. Survey.

Godfrey shales

Upper Cretaceous: California.

N. L. Taliaferro, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 132 

[preprint 1941].

Godineau beds

Pleistocene: Trinidad, British West Indies.

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1451

(chart). 

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 212 (table 17), 213

[1952].
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN' 1936-1955: 145

Godineau River marls

Oligocene, Trinidad, British West Indies.

C. J. Maury, 1925, Bull. Am. Paleontology, v. 10, no. 42, p. 169 (17). 

R. A. Liddle, £1928], The geology of Venezuela and Trinidad: Forth Worth, Tex., 

J. P. MacGowan, p. 458-459.

Goeland granite

Precambrian: Quebec, Canada.

P. E. Imbault, 1948, Quebec Dept. Mines Prelim. Kept. 218, p. 8.

Gog formation

Lower Cambrian: Alberta and British Columbia, Canada.

Charles Deiss, 1939, (abs.) Geol. Soc. America Bull., v. 50, no. 12, p. 1906; 1940, 

v. 51, no. 5, p. 771-773.

Goldale formation

Precambrian: Ontario, Canada.

B. S. W. Buffam, 1948, in Structural geology of Canadian ore deposits : Canadian Inst. 

Mining and Metallurgy, p. 459.

Gold Butte granite

Age unknown: Nevada.

C. E. Longwell, 1936, Geol. Soc. America Bull., v. 47, no. 9, p. 1405.

Gold Centre series

Precambrian (Keewatin) : Ontario, Canada.

G. B, Langford, 1941, Am. Inst. Mining Engineers Trans. ,v. 144, p. 153.

Golden member (of Arapahoe-Denver formation) 

Tertiary: Colorado. 

L. W. LeEoy, 1946, Colo. School Mines Quart, v. 41, no. 2, p. 100, 103, 104.

Golden Gate formation

Upper Cretaceous: California.

J. M. Kirby, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3; p. 606.

Golden Grove intrusives

Pre-Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 25-39.

Goldens Ranch formation 

Eocene: Utah. 

Siegfried Muessig, 1951, Science, v. 114, no. 2957, p. 234.

Golden Valley formation

Eocene: North Dakota and Montana.

W. E. Benson and W. M. Laird, 1947, (abs.) Geol. Soc. America Bull., v. 58, no. 12,

pt. 2, p. 1166,1167. 

W. D. Johnson, Jr., and R. P. Kunkel, 1954, U. S. Geol. Survey Oil and Gas Inv. Map

OM 148.

Gold Park gabbro-diorite

Precambrian: California.

W. J. Miller, 1938, Geol. Soc. America Bull., v. 49, no. 3, p. 419-420.

Goldsborough formation

Cretaceous (?) : Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 816-817.
146 GEOLOGIC NAMES OF NORTH AMERICA

Goldson formation

Silurian: Newfoundland, Canada.

W. H. Twenhofel and R. R. Shrock, 1937, Geol. Soc. American Bull., v. 48, no. 12, 

p. 1749, 1767.

Goldvue quartz diorite

Precambrian (Archean) : Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Rept. 255, p. 2,11.

Goler formation

Eocene to Miocene: California.

T. W. Dibblee, Jr., 1952, Calif. Dept. Nat. Res., Div. Mines Bull. 160, p. 19-25.

Gonioceras Bay formation

Middle Ordovician (Black River) : North Greenland.

G. T. Troedsson, 1926, Meddel. om Gr0nland, bind 71, nr. 1, p. 12, 110-111.

Gonzalez sands

Miocene: Tabasco and Chiapas, Mexico.

Ramiro Robles Ramos, 1942, Irrigaci6n en Mexico, v. 23, no. 3, p. 45 (correlation

chart). 

G. P. Salas and Ernesto Lopez Ramos, 1951, Asociaci6n Mexicana GeOlogos Petroleros

Bol., v. 3, nos. 1-2, p. 36-37.

Good Hope limestone

Eocene, lower: Jamaica, British West Indies.

C. A. Matley, 1924, Pan-Am. Geologist, v. 42, no. 4, p. 312.

Goodrich formation

Lower Cretaceous: British Columbia, Canada.

R. T. D. Wickenden and George Shaw, 1943, Canada Geol. Survey Paper 43-13, p. 7-8.

Goose Cove formation

Lower Cambrian: Newfoundland, Canada.

E. R. Rose, 1948, Newfoundland Geol. Survey Bull. 32, pt. 2, p. 44.

Goose Cove schist

Ordovician (?) : Newfoundland, Canada.

J. R. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 24.

Goose Lake clay

Pennsylvanian: Illinois.

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 25-26, 84.

Goose Tickle slate

Ordovician: Newfoundland, Canada.

J. R. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 8-9.

Gorbut member (of Gravel Point formation) 

Middle Devonian: Michigan.

W. A. Kelly and G. W. Smith, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, 

no. 3, p. 457.

Gordo formation

Upper Cretaceous (Tuscaloosa group) : Alabama, Mississippi, and Georgia. 

L. C. Conant and W. H. Monroe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 37.

Gordon Creek shale member (of Cook Mountain formation) 

Eocene (Claiborne group) : Mississippi. 

E. P. Thomas, 1942, Miss. State Geol. Survey Bull. 48, p. 57-59.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 193 6-1 955 147

Gore Mountain gabbro

Precambrian (Algoman) : New York.

M. H. Krieger, 1937, N. Y. State Mus. Bull. 308, p. 28-32, 36.

Gorgora shale member (of Fayette formation) 

Eocene (Jackson) : Texas.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, p. 259 

(fig. 2), 268-269.

German formation (in Ellenburger group) 

Lower Ordovician: Texas.

V. E. Barnes and P. E. Cloud, Jr., 1945, Tex. Univ. Bur. Econ. Geology Min. Res. 

Circ. 34, p. 1, 8-19.

Goss Pond volcanics

Ordovician (?) : Newfoundland, Canada.

A. K. Snelgrove, 1931, Canadian Mining and Metall. Bull. 228, p. 485-487.

Gothic formation

PennsyIranian (DesMoiuesian) : Colorado.

R. L. Langenheim, Jr., 19151, (abs.) in Am. Assoc. Petroleum Geologists 36th Ann. 

Meeting [program], p. 29; 1952, Am. Assoc. Petroleum Geologists Bull., v. 36, 

no. 4, p. 561-563, 568-569.

Goudron sands (in Moruga formation)

Miocene, upper: Trinidad, British West Indies.

Ernst Lebner, 1935, [Fraace] Office national des combustibles liquides Annales,

10e ann e, no. 4, p. 717 (i:able).

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 205 (table 13), 

209 [1952].

Gould glacial substage

Pleistocene (Wisconsin) : Colorado.

D. F. Eschman, 1952, (abs.) Geol. Soc. America Bull., v. 63, no. 12, pt. 2, p. 1380; 

1955, Jour. Geology, v. 63, no. 3, p. 203-205.

Gouldbusk limestone member (of Moran formation) 

Permian (Wolfcamp age) : Texas.

R. C. Moore in M. G. Cheney, 1948, Abilene Geol. Soc. [Guidebook] Spring Field Trip,

June 11-12, p. 5, 13, sheets 3, 4. 

R. C. Moore, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 80, sheets 1, 2.

Gove chalk

Cretaceous (Mid-Cretacie) : Kansas.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 76, no. 4, p. 304 (chart).

Gove member (of Berwick formation)

Paleozoic (probably Ordovician and Silurian) : New Hampshire. 

Jacob Freedman, 1950, Geol Soc. America Bull., v. 61, no. 5, p. 460, 464.

Governor diorite

Miocene, upper: Colorado.

McClelland Dings, 1941, Geol. Soc. America Bull., v. 52, no. 5, p. 701-707.

Gracias formation

Pliocene, lower: Honduras.

E. C. Olson and P. O. McGrew, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, 

pt. 2, p. 1895.
148 GEOLOGIC NAMES OF NORTH, AMERICA

Graciosa coarse-grained member (of Careaga sandstone) 

Pliocene, upper: California.

W. P. Woodring, M. N. Bramlette, and K.,E. Lohman, 1943, Am. Assoc. Petroleum 

Geologists Bull., v. 27, no. 10, p. 1356-1358.

Graham Ferry formation

Pliocene and Pleistocene: Mississippi.

G. F. Brown and others, 1944, Miss. State Geol. Survey Bull. 60, p. 45-54.

Grahamville formation

Cambro-Ordovician: Vermont.

W. F. Brace, 1953, Vt Geol. 'Survey Bull. 6, p. 47-48,' tables 2, 3.

Graminia member (of Winterburn formation) 

Devonian: Alberta, Canada (subsurface). 

D. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, p. 1815.

Grampian Hills member (of Nanafalia formation) 

Eocene (Wilcox) : Alabama.

B. W. Blanpled and R. T. Hazzard, 1939, Shreveport Geol. Soc. Guidebook 14th Ann. 

Field Trip, p. 126, 128 (correlation chart),

Granada conglomerate

Precambrian (Timiskaming) : Quebec, Canada.

M. E. Wilson, 1943, Royal Soc. Canada Trans., ser. 3, v. 37, sec. 4, p. 126. 127.

Granada greywacke

Precambrian (Timiskaming) : Quebec, Canada.

M. E. Wilson, 1943, Royal Soc. Canada Trans., ser. 3, v. 37, sec. 4, p. 126, 127.

Grand Bay beds

Miocene, lower: The Grenadines (Carriacou), British West Indies.

C. T. Trechmann, 1935, Geol. Mag., v. 72, no. 12, p. 541, 553.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1597.

Grand Bayou member (of Hall Summit formation) 

Paleocene (Midway) : Louisiana.

D. P. Meagher and L. C. Aycock, 1942, La. Dept. Conserv. Geol. Pamph. 3, p. 12-16. 

G. E. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petrolettm Geologists Bull., 

v. 29, no. 1, p. 59.

Grand Beach rhyolite-porphyry

Devonian(?): Newfoundland, Canada.

R. E. Van Alstine, 1948, Newfoundland Geol. Survey Bull. 23, p. 21.

Grand Detour formation

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol, Soc. Guidebook 16th Ann. 

Field Conf., p. 6, fig. 3.

Grande Anse formation

Pennsylvanian: New Brunswick, Canada.

G. W. H. Norman, 1941, Canada Geol. Survey Map 647A.

Grande River-Portage River formation

Silurian and Devonian: Quebec, Canada.

H. W. McGerrigle, 1950, Quebec Dept. Mines Geol. Rept. 35, p. 24.
GEOLOGIC NAMES OP NORTH AMERICA INTRODUCED' IN 1936-1955 149

Grande Riviere formation '' "' : 

Lower Cretaceous: Trinidad, British West Indies. 

A. G. Hutchison, 1938, Bel. Geologfa y Minerfa (Venezuela), v. 2, nos. 2-4 (English

ed.), p. 235 (table).

H. G. Kugler, 1953, Vereinigung 'Schweizer Petroleum Geologen u. Ingenieure Bull,, 

v. 20, no. 59, p. 32.

Grande Riviere Road limestone

Cretaceous (Aptian or Albian) : Trinidad, British West Indies. 

A. G. Hutchison, 1938, Bol. Geologla y Minerla (Venezuela), v. 2, nos. 2-4 (English 

ed.), p. 232, 235 (table).

Grande Terre limestone

Miocene: Gaudeloupe (Grande Terre), French West Indies.

Alfred Senn, 1940, Am. At-soc. Petrjleum Geologists Bull., v. 24, no. 9, p. 1581.

Grand Falls drift

Quaternary: New Brunswick and Quebec, Canada. 

H. A. Lee, 1955, Canada Geol. Survey Paper 55-15, p. 6.

Grandge slate

Lower Ordovician: Vermont.

Charles Schuchert, 1937, (Jeol. Soc. America Bull., v. 48, no. 7, p. 1072-1074, 1075.

Grand Lake Brook series

Cambrian: Newfoundland, Canada.

T. N. Walthier, 1949, Newfoundland Geol. Survey Bull. 35, pt. 1, p. 18-20.

Grand Ledge cyclothem (in JSaginaw formation) 

Pennsylvanian: Michigan.

Michigan Geol. Soc., 1954, in Geologic cross section of Paleozoic rocks central 

Mississippi to northern Michigan: Am. Assoc. Petroleum Geologists^ p. 28.

Grand River formation

Pennsylvanian: Michigan.

W. A. Kelly, 1936, Mich. r«pt. Conserv. Geol. Div. Pub. 40, Geol. Ser. 34, p. [206]- 

214.

Grand River limestone

Mississippian (Chesterian): Oklahoma.

J. M. Weller and others, 1948, Geol. Soc. America Bull., v. 59, no. 2, p. 146, Chart 5.

Grand Savanna gravel series

Pleistocene: Dominica, British West Indies.

J. W. W. Spencer, 1902, Geol. Soc. London Quart. Jour., v. 58, pt. 3, p, 349.

Grandview limestone

Pennsylvanian (Pottsville) : Indiana.

D. W. Franklin, 1944, 111. State Acad. Sci. Trans., v. 37, nos. 3-4, p. 86, 89.

Granite Falls limestone

Pennsylvanian and/or Permian: Washington.

R. A. Anderson, 1941, Wash. State Coll. Research Studies, v. 9, no. 3, p. 189, 201.

Graniteville granite

Precambrian: Missouri. , 

H. B. Graves. 1938, Acad. Sci. St. Louis Trans., v. 29, no. 5, p. 119.

Grantmire member (of Windsior series) 

Mississippian: Nova Scotia, Canada. 

W. A. Bell and E. A, Goranson, 1938, Canada Geol. Survey Map 359A.
150 GEOLOGIC NAMES OF NORTH AMERICA

Grantsville formation

Middle Triassic: Nevada.

S. W. Muller and H. G. Ferguson, 1939, Geol. Soc. America Bull., v. 50, no. 10, 

p. 1592-1594.

Granville formation

Lower Cambrian: Vermont.

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 49-55,116.

Grasselli dolomite (in Kingsport formation) 

Lower Ordovician (Canadian) : Tennessee.

C. R. L. Oder and H. W. Miller, 1945, Am. Inst. Mining and Metall. Engineers (Mining 

Technology, v. 9, no. 3) Tech. Pub. 1818, p. 4, 6 (table 2).

Grass Valley formation

Upper Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Grassy member (of Blackhawk formation) 

Upper Cretaceous: Utah. 

R. G. Young, 1955, Geol. Soc. America Bull., v. 66, no. 2, p. 186.

Gratiot flow (in Portage Lake lava series)

Precambrian (middle Keweenawan series) : Michigan.

J. C. Wright and H. R. Cornwall, 1954, Bedrock geology of the Bruneau Creek quadrangle, Michigan: U. S. Geol. Survey Geol. Quadrangle Map [GQ 35].

Gratton limestone

Middle Ordovician: Virginia.

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p, 872-873.

Gravelbourg formation

Jurassic: Saskatchewan, Canada (subsurface).

J. R. Ower, 1953, Canadian Inst. Mining and Metallurgy Trans., v. 56, p. 897-398. 

R. L. Milner and G. E. Thomas, 1954, Western Canada sedimentary basin : Tulsa, Okla., 

Am. Assoc. Petroleum Geologists, p. 257-260.

Grayburg formation (in: Whitehorse group)

Permian: Subsurface in New Mexico and Texas.

R. K. DeFord in Addison Young, Max David, and E. A. Wahlstrom, 1939, Am. Assoc.

Petroleum Geologists Bull., v. 23, no. 10, p. 1551. 

R. I. Dickey, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24f no. 1, p. 44-47.

Gray Gulch formation 

Tertiary: Utah. 

E. M. Spieker, 1949, Utah Geol. Soc. Guidebook 4, p. 37, 38, geol. map.

Grayling formation

Lower Triassic: British Columbia and Yukon, Canada. 

E. D. Kindle, 1944, Canada Geol. Survey Paper 44-16. p. 6-10.

Gray Mesa member (of Madera limestone) 

Pennsylvanian: New Mexico. 

V. C. Kelley and G. H. Wood, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 47.

Grazier member (of Hatter formation)

Middle Ordovician (Chazyan) : Pennsylvania. 

G. M. Kay, 1943, Econ. Geology, v. 38, no. 3, p. 193.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 151

Greasy Creek facies (of Fort Payne formation)

Lower Mississippian: Kentucky and Tennessee.

H. J. Klepser, 1937, Ohio State Univ. Abs. Doctors' Dissert. 24, p. 182.

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 53.

Great Falls lake sands 

Pleistocene: Montana. 

J. B. Lyons, 1944, Geol. Soc. America Bull., v. 55, no. 4, p. 449 (fig. 2), 452.

Great Harbour Deep granite

Precambrian: Newfoundland, Canada.

F. C. Foley, 1937, Newfoundland Geol. Survey Bull. 10, p. 11.

Great Sitkin volcanics

Tertiary and Quaternary: Alaska (Aleutian Islands).

F. S. Simons and D. B. Mathewson, 1947, U. S. Geol. Survey Alaskao Volcano lav. Rept. 

2, pt. 4, p. 63.

Gredal formation

Eocene, upper: California.

Martin Van Couvering and H. B. Alien, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 

118, pt. 3, p. 496-500.

Greely Fjord group

Permian: Northwest Territories (Bllesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 67-73.

Green Canyon group

Pennsylvanian (Derry) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 32-33, 

35-36.

Green Head formation

Precambrian: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 23-25.

Greenhorn Mountain quartzite

Precambrian (Belt) : Montana.

Adolph Knopf, 1950, Am. Mineralogist, v. 35, nos. 9-10, p. 839.

Greenland sandstone member (of Atoka formation) 

Pennsylvanian: Arkansas. 

L. G. Henbest, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 8, p. 1946-1947.

Greenlandian

Late Precambrian: Greenland.

Lauge Koch, 1933, Meddel. om Gr0nland, v. 73, afd. 1, nr. 2, p. 36; tn Brich Krenkel, 

editor, 1935, Geologic von GrSnland, Geologic der Erde, p. 3-24.

Green Mountain conglomerate

Tertiary (post-Eocene, pre-Miocene) : Colorado.

L. W. LeRoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 111-113.

Greenock formation

Carboniferous: Alberta, Canada.

R. A. C. Brown, 1952, Canada Geol. Survey Mem. 264, p. 22-25.

Greenup cyclothem (including Greenup limestone) 

Pennsylvanian: Illinois. 

W. A. Newton and /. M. Weller, 1937, 111. State Geol. Survey Rept. Inv. 45, p. 26-27.
152 GEOLOGIC NAMES OF NORTH AMERICA

Green Valley formation

Pliocene, lower: California. . ,

Carlton Condit, 1938, Carnegie Inst. Washington Pub. 476, p. 248.

B. L. Clark, 1940, (abs.) Geol. Soc. America Bull., v, 51, no. 12, pt. 2, p. 1957.

Green Valley tonalite

Upper Cretaceous: California.

P. S. Miller, 1937, Geol. Soc. America Bull., v. 48, no. 10, p. 1408-1409.

B. S. Larsen and George Switzer, 1939, Am. Jour. Sci., v. 237, no. 8, p. 562-563.

Green Valley volcanic series 

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. Soc. American Bull., v. 57, no. 12, 

pt. 2, p. 1197. ,

Gregory member (of Pierre shale) ' 

Upper Cretaceous: South Dakota. 

W. V. Searight, 1937, S. Dak. State Geol. Survey Bept. Inv. 27, p. 10-20, pi. 3.

Gregory series

Precambrian: Northeast Greenland.

N. B. Odell, 1939, Meddel. om Gr0nland, bind 119, nr. 6, p. 15-20, 31, pi. 2.

Gregwa formation

Middle Cambrian: Nova Scotia, Canada.

B. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 18-20.

Grejsdalen granite

Lower Paleozoic (Caledonian?) : Northeast Greenland.

Erdhart Frankl, 1953, Meddel. om Gr0nland, bind 113, nr. 4, p. 98, 139-141, 157.

Griffith beds

Cretaceous (?): California.

G. J. Neuerburg, 1953, Calif. Dept. Nat. Res., Div. Mines Special Kept. 33, p. 7 

(table 1), 18-19, pL 1.

Griffon Cove River beds

Devonian: Quebec, Canada.

E. M. Kindle, 1938, Bull. Am. Paleontology, v. 24, no. 82, p. 51-52 (17-18).

Grimes Canyon sand and gravel member (of Santa Barbara formation) 

Pleistocene, lower: California.

T. L. Bailey, 1954, in Pacific Petroleum Geologist, v. 8, no. 9, p. 1.

R. G. Thomas and others, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 6, 

p. 20, pi. 2.

Grindstone group

Jurassic (Knoxville): California.

P. M. Andersen, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 184 

[preprint, 1941].

Grindstone Point unit (in Winnipeg formation) 

Ordovician: Saskatchewan, Canada. 

W. O. Kupsch, 1953, Saskatchewan Dept Nat. Res. Rept. 10, p. 11.

Grizzly formation

Precambrian: South Dakota.

T. A. Dodge, 1942, Geol. Soc. America Bull., v. 53, no. 4, p. 563.

J. A. Noble and J. 0. Harder, 1948, Geol. Soc. America Bull., v. 59, no. 9, p. 944, 952,'

pi. 1.*
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 153

Groos Quarry member (of Trenton formation) ' 

Middle Ordorician: Michigan.

E. C. Hussey, 1952, Mich. Dept Conserv. Geol. Survey Div. Pub. 46, Ge61. Ser. 39, 

p. 13-14.

Grosmont member (of Woodbendformation)

Upper Devonian: Alberta, Canada (subsurface).

H. E. Belyea, 1952, Canada Geol. Survey Paper 52-27, p. 21.

Grove Creek formation

Upper Cambrian: Montana.

Erling Dorf and Christina Lochman, 1938, (abs.) Geol. Soe. America Pfoc. 1937, 

p. 275-276.

Grover gravel

Miocene (?) : Missouri and Illinois.

Leland Horberg, 1950, 111. Acad. Sci. Trans., v. 43, p. 173.

W. W. Eubey, 1952, U. S. Geol. Survey Prof. Paper 218, p. 61-74. :

Grumbler formation

Upper Devonian: Northwest Territories (Mackenzie), Canada-. ' '

C. H. Crickmay, 1953, New Spiriferidae from the Devonian of western Canada: 

Calgary, Canada, Imperial Oil Limited, p. 1,11.

Grundy Knob limestone

Pennsylvanian: Kentucky.

J. A. Culberston, 1932, The paleontology and stratigraphy of the Pennsylvanian strata 

between Caseyville, Ky., and Vincennes, Ind.; Abs. Thesis, 111. Univ.: Urbana, 111., 

p. 3, 8.

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 85.

Grupera formation

Permian (Wolfcamp) : Chiapas, Mexico.

M. L. Thompson and A. K. Miller, 1944, Jour. Paleontology, v. 18, no. 6, p. 484.

Guacamaya beds

Permian: Tamaulipas, Mexico.

Manuel Maldonado-Koerdell, 1954, Associaddn Mexicana Geologos Petroleros Bol., 

v. 6, nos. 3-4, p. 119.

Guacamayas dacitic tuffs and flows 

Pliocene (?): Honduras. 

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 29, fig. 2.

Guadalcazar limestone

Upper Cretaceous (Gulf series): San Luis Potosi, Mexico.

J. P. Larios, 1948, Soc. Mexicana Geografla y Estadistica Bol., tomo 65, nos. 2-3, 

p. 291.

Guajalote formation

Miocene, lower: Tamaulipas and Nuevo Leon, Mexico. 

Julia Gardner, 1945, Geol. Soc. America Mem. 11, p. 19-21.

Guajataca member (of Cibaomarl) 

Oligocene: Puerto Rico.

A. D. Zapp, H. E. Bergquist, and C. E. Thomas, 1948, U. S. Geol. Survey Oil and Gas 

Inv. Prelim. Map 85, sheets 1, 2. , "
154 GEOLOGIC NAMES OF NORTH AMERICA

Guanajibo formation

Miocene, upper, or Pliocene, lower: Puerto Rico (subsurface). 

C. L. McGuinness, 1948, Ground-water resources of Puerto Eico: [San Juan?] 

Puerto Bico Aqueduct and Sewer Service, p. 226-227.

Guato formation

Eocene to Oligocene: Cuba.

J. F. de Albear, 1941, Soc. Cubana Ingenieros Rev., v. 36, chart facing p. 564. 

Jorge Brodermann, 1945, Soc. Cubana Ingenieros Eev., v. 42, no. 1, p. 127-128, chart 

facing p. 144.

Guaxaro andesite

Age not stated: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 134.

Guayaguayare beds

Upper Cretaceous: Trinidad, British West Indies (subsurface). 

Hans Bolli, 1952, Jour. Paleontology, v. 26, no. 4, p. 671.

Guayal limestone

Cretaceous (Aptian-Albian) : Tabasco, Mexico.

G. P. Salas, 1949, Soc. Geol. Mexicana Bol., tomo 14, p. 54.

Guffey volcanics

Oligocene: Colorado.

J. E. Bever, 1954, Dissert. Abs., v. 14, no. 7, p. 1088.

Guide Hill group

Upper Carboniferous or Lower Permian: Northwest Territories (Ellesmere

Island), Canada. 

E. G. Blackadar, 1954, Canada Geol. Survey Paper 53-10, p. 14-15.

Guilarte limestone

Upper Cretaceous: Puerto Rico.

E. C. Mitchell, 1954, Puerto Rico Univ. Agr. Expt. Sta. Tech. Paper 13, p. 47, 48.

Guilford granite

Age unknown (post-Glenarm series) : Maryland.

Ernst Cloos and C. H. Broedel, 1940, Geologic map of Howard County and adjacent 

parts of Montgomery and Baltimore Counties (1 : 62,500) : Md. Geol. Survey.

Guinda formation

Upper Cretaceous (Chico) : California.

J. M. Kirby, 1942, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 26, no. 5, p. 899 ; 

1943, v. 27, no. 3, p. 283-284.

Gulf Hammock limestone

Eocene (Claiborne or Jackson) : Florida.

D. B. Ericson, 1945, Science, v. 102, no. 2644, p. 234.

Gull Island formation

Middle Ordovician(?) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 9.

Gull Lake anorthosite

Precambrian: Quebec, Canada.

B. C. Freeman, 1939, Jour. Geology, v. 47, p. 28.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 155

Gull River formation

Middle Ordovician (Black River) : Ontario, Canada.

V. J. Okuliteh, 1939, Royal Canadian last. Trans., v. 22, pt 2, p. 325-329.

Gullwing Lake conglomerate

Precambrian: Ontario, Canada.

W. D. Harding, 1951, Ontario Dept. Mines Ann. Rept, v. 59, pt. 4, p. 15-16.

Gullwing Lake volcanics

Precambrian: Ontario, Canada.

W. D. Harding, 1951, Ontario Dept. Mines Ann. Rept., v. 59, pt. 4, p. 18.

Gum Sulphur siltstone member (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 118-119.

Gunn member (of Mt. Simon formation) 

Upper Cambrian: Illinois (subsurface). 

J. S. Templeton, Jr., 1950, 111. Acad. Sci. Trans., v. 43, p. 155.

Gun River formation

Silurian: Quebec, Canada.

W. H. Twenhofel, 1928, Canada Geol. Survey Mem. 154, p. 16.

Gunther dolomite

Precambrian (Chuaran) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, T. 70, no. 2, p. 107,112.

Gunton member (of Stony Mountain formation)

Upper Ordovician (Richmond) : Manitoba, Canada.

V. J. Okuliteh, 1943, Royal Soc. Canada Trans., sec. 4, v. 37, p. 60.

Guymard quartzite

Lower to Middle Silurian: New York.

C. F. Kilfoyle, 1954, N. Y. State Mus. Bull. 348, p. 499-500, 650.

Gypsum Spring formation

Middle Jurassic: Wyoming, South Dakota, and Montana. 

J. D. Love, 1939, Geol. Soc. America Special Paper 20, p. 45-46.

Gypsy quartzite

Cambrian: Washington.

C. F. Park, Jr., 1938, Econ. Geology, v. 33, no. 7, p. 713, 714 (fig. 2). 

C. F. Park, Jr., and R. S. Cannon, Jr., 1943, U. S. Geol. Surrey Prof. Paper 202, 

p. 6, 13-15, pi. 1.

Hagan shale member (of Clinch sandstone) 

Lower Silurian: Virginia. 

R. L. Miller and J. O. Fuller, 1947, U. S. Geol. Survey Oil and Gas lav. Prelim. Map 76.

Hagar group

Lower Paleozoic (Caledonian): Northeast Greenland.

C. E. Wegmann, 1935, Meddel. om Grlnland, bind 103, nr. 3, p. 32, pL 1.

Hager limestone or formation 

Middle Ordovician: Missouri. 

B. R. Larson, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 9, p. 2063-2058.

426779 57 11
156 GEOLOGIC NAMES OF NORTH AMERICA

Haggard limestone (in Cumberland sandstone) 

Upper Ordovician: Kentucky.

W. E. Jillson, 1953, The Haggard limestone: Frankfort, Ky., Roberts Printing Co., 

p. 9-12.

Hagman formation

Eocene, upper: Mariana Islands (Saipan).

Eisaburo Tayama, 1938, Geomorphology, geology, and coral reefs of Saipan Island;

Tropical Industry Inst., Palau, South Sea Islands, Bull. 1 [English translation in

library of U. S. Geol. Survey, p. 50-51]. 

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. Paper

253, p. 7.

Halberstadt limestone

Eocene, lower: Jamaica, British West Indies.

J. G. Sawkins, 1869, Reports on the geology of Jamaica: [Great Britain] Geol. Survey Mem., p. 91, 93.

C. A. Matley, 1951, Geology and physiography of the Kingston district, Jamaica: 

Inst of Jamaica, p. 32, geol. map.

Halberstadt volcanic group

Eocene, lower: Jamaica, British West Indies.

C. A. Matley, 1940, Geol. Soc. London Abs. Proc. 1373, p. 100; 1951, Geology and 

physiography of the Kingston district, Jamaica: Inst. of Jamaica, p. 32, geol. map.

Halcyon Lake calc-dolomite

Lower Ordovician: New York.

B. B. Knopf, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, p. 1212.

Haldeman siltstone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 180, 182-187.

Hall cyclothem (including Hall limestone) 

Pennsylvanian: Illinois.

E. C. Moore and others, 1944, Geol. Soc. America Bull., v. 55, no. 6, Chart 6, column 29. 

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 12, 16.

Halle Mountains formation

Upper Carboniferous (Namurian): Northeast Greenland.

Lauge Koch in Erich Krenkel, editor, 1935, Geologic von Gronland, Geologic der Brde, 

p. 56, 62-66.

Hallian stage

Pliocene: California.

Manley Natland, 1953, Pacific Petroleum Geologist, v. 7, no. 2, p. 2.

Hall Lake member (of McRae formation)

Upper Cretaceous and Tertiary, lower: New Mexico. 

H. P. Bushnelli 1955, Compass, v. 33, no. 1, p. 14-16.

Hallnor conglomerate

Precambrian: Ontario, Canada.

Peter Price and E. C. E. Bray, 1948, in Structural geology of Canadian ore deposits: 

Canadian Inst. Mining and Metallurgy, p. 559.

Halloran complex

Precambrian: California.

W. J. Miller, 1946, Geol. Soc. America Bull., v. 57, no. 5, p. 499.

Halloran Spring complex 

See Halloran complex.
GEOLOGIC NAMES OF NORTH AMEBICA INTRODUCED IN 19 3 6-19 5 5 157

Hallowell member (of Cobourg formation)

Middle Ordovician (Mohawkian) : Ontario, Canada; and New York., 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 278-280.

Halls diorite porphyry

Miocene, middle or upper: Oregon. ' 

T. P. Thayer, 1939, Oreg. Dept. Geology and Mineral Industries Bull. 15, p. 10.

Halls Town formation

Precambrian (Upper Proterozoic): Newfoundland, Canada. 

B. D. Hutchinson, 1954, Canada Geol. Survey Menu 275, p. 14-16.

Hall Summit formation

Paleocene (Midway): Louisiana.

G. [E.] Murray, Jr., 1941, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 25,

no. 5, p. 941-942. 

G. B. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull.,

v. 29, no. 1, p. 58-60.

Ham granite

Precambrian: Manitoba, Canada.

J. M. Harrison, 1949, Canada Geol. Survey Mem. 250, p. 19.

Hamakua volcanic series

Tertiary, upper, to Quaternary: Hawaiian Islands (Hawaii). 

G. A. Macdonald, 1945, Am. Jour. Sci., v. 243, no. 4, p. 211^214.

Hamilton series

Precambrian: Newfoundland (Labrador) and Quebec, Canada.

J. K. Gustafson and A. E. Moss, 1953, Mining Eng., v. 5, no. 6, p. 595 (table 1).

Hammond River formation

Lower or Upper Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 111-113.

Hana volcanic series

Pleistocene and Recent: Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 90-102.

Hanawi basaltic andesite

Pleistocene (?): Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 230, 253-254.

Hancock member (of Pinney Hollow formation) 

Lower Cambrian: Vermont. 

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 55, 61.

Haney limestone

Mississippian (Chester) : Kentucky.

A. C. McFarlan and others, 1955, Ky. Geol. Survey, ser. 9, Bull, 16, p. 18.

Hanford Brook formation

Lower Cambrian (Hanfordian) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper. 5, p. 66-69.

Hanley sandstone (in Cattaraugus formation) 

Devonian: Pennsylvania. 

C. R. Fettbe. 1938, Pa. Geol. Survey, ser. 4, Bull. M 21, p. 37-38.
158 GEOLOGIC NAMES OF NORTH AME'KICA

Hannah formation

Miocene, lower: California.

Martin Van Couvering and H. B. Alien, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 

118, pt. 3, p. 496-500.

Hannan limestone

Mississippian: Montana.

Charles Deiss, 1941, Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1806; 1943, v. 54, 

no. 2, p. 228-230.

Hanover granodiorite porphyry

Cretaceous or younger: New Mexico.

P. F. Kerr and others, 1950, Geol. Soc. America Bull., v. 61, no. 4, p. 287-288.

Hanover limestone (in Carbondale formation) 

Pennsylvanian: Illinois. 

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 22.

Hanover pebble bed (in Cuyahoga formation) 

Mississippian: Ohio. 

J. E. Hyde, 1953, Ohio Div. Geol. Survey Bull. 51, p. 98.

Hansonburg group

Pennsylvanian (Missouri series): New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 63-65.

Hanson Creek formation

Upper Ordovician: Nevada.

C. W. Merriam, 1940, Geol. Soc. America Special Paper 25, p. 10-11.

Harbour Main volcanics

Precambrian: Newfoundland, Canada.

B. F. Howell, 1925, Bull. Am, Paleontology, v. 11, no. 43, p. 20.

Hardrock "porphyry"

Precambrian: Ontario, Canada.

J. A. Reid, 1945, Econ. Geology, v. 40, no. 8, p. 509-511.

Hardscrabble limestone

Mississippian: Colorado.

J. C. Maher, 1950, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 39.

Hardwood Point shales and flags

Mississippian (Kinderhook) : Michigan.

H. M. Martin, 1036, The centennial geological map of the southern peninsula of Michigan (1:500,000) : Mich. Geol. Survey Div. Pub. 30 (Geol. Ser. 33).

Hardwood Ridge flow

Pennsylvanian or older: New Brunswick, Canada. 

J. E. Muller, 1951, Canada Geol. Survey Mem. 260, p. 12,13.

Hardy Creek limestone (of Moccasin limestone) 

Middle Ordovician: Virginia. 

R. L. Miller and J. C. Fuller, 1947, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 76.

Hardy Hill quartzite member (of Orfordville formation) 

Middle Ordovician (?): New Hampshire and Vermont.

C. A. Chapman and others, 1938, Geologic map and structure sections of the Mascoma

quadrangle, New Hampshire (1: 62,500) : N. H. Highway Dept. 

C. A. Chapman, 1939, Geol. Soc. America Bull., v. 50, no. 1, p. 132-133.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 159

Hare Island limestone

Middle Ordovician (Chazy): Newfoundland, Canada. 

J. R. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 7.

Harg shale facies (of Portwood formation) 

Middle Devonian: Kentucky. 

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 862-864, 866.

Harkers fanglomerate 

Pliocene: Utah. 

L. W. Slenta, 1955, Utah Geol. Soc. Guidebook 10, p. 24, 28-30.

Harlow Bridge quartzite member (of Cram Hill formation) 

Middle Ordovician: Vermont.

L. W. Currier and R. H. Jahns, 1941, Geol. Soc. America Bull., v. 52, no. 9, p. 1493, 

1495.

Harmon member (of Peace River formation) 

Lower Cretaceous: Alberta, Canada. 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 8.

Harmony formation

Upper Cambrian (?): Nevada.

R. J. Roberts, 1951, Geology of the Antler Peak quadrangle, Nevada: U. S. Geol. 

Survey Geol. Quadrangle Map [GQ 10],

Harmony Hill formation

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri^State Geol. Soc. Guidebook 16th Ann. 

Meld Conf., p. 21, figs. 3, 12.

Harold formation

Pleistocene, upper: California.

L. F. Noble, 1953, Geology of the Pearland quadrangle, California: U. S. Geol. 

Survey Geol. Quadrangle Map [GQ 24].

Harp Lake anorthosite

Precambrian: Newfoundland (Labrador), Canada.

D. M. Baird, 1953, Newfoundland Geol. Survey Inf. Circ. 4 (revised), p. 137.

Harriett formation 

Silurian: Ohio. 

Wilbur Stout, 1941, Ohio Geol. Survey, ser. 4, Bull. 42, p. 90-91.

Harriman shale member (of Lykins formation) 

Permian: Colorado. 

L. W. LeRoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 31-33.

Harrington soil

Pleistocene: Bermuda Islands.

R. W. Sayles, 1931, Am. Acad. Arts Sci. Proc., v. 66, no. 11, p. 394-3»5.

Harrisite dolomite

Middle Silurian: Utah.

F. W. Osterwald, 1958, U. S. Geol. Survey Trace Elements Inv. Bept. TEI-330, p. 105.

Harter member (of Frankfort formation)

Upper Ordovician (Cincinnatian) : New York. 

Marshall Kay, 1953, N. Y. State Mus. Bull. 347, p. 64, 66.
160 GEOLOGIC NAMES OF NORTH AMERICA

Hartford Hill rhyelite tuff

Oligocene(?) : Nevada. .

V. P. Gianella, 1934, Mining and Metallurgy, v. 15, no. 331, p. 299; 1936, Nev. 

Univ. Bull., v. 30, no. 9, p. 45-52.

Hartley shale and sandstone (in Chinle formation) 

Upper Triassic: Utah. 

P. D. Proctor, 1953, Utah Geol. Mineralog. 'Survey Bull. 44, p. 10-11, 19.

Hartline chert

Mississippian: Illinois.

J. M. Weller in J. M. Weller and G. B. Ekblaw, 1940, 111. State Geol. Survey Kept. 

Inv. 70, p. 19-20.

Hartz Fjaeld formation

Lower Cretaceous (Neocomian) : East Greenland.

Alfred Rosenkrantz in Lauge Koch, 1929, Meddel. om Gr0nlandf bind 73, afd. 2, 

nr. 1, p. 149.

Harvey group

Pre-Carboniferous: Yukon, Canada.

R. B. Campbell, 1954, Canada Geol. Survey Paper (Prelim. Map) 54-12.

Hasenclever member (of Frankfort formation) 

Upper Ordovician (Cincinnatian) : New York. 

Marshall Kay, 1953, N. Y. State Mus. Bull. 347, p. 64, 66.

Hasler formation

Lower Cretaceous: British Columbia, Canada.

R. T. D. Wickenden and George Shaw, 1943, Canada Geol. Survey Paper 43-13, 

p. 6-7.

Hassel formation

Lower Cretaceous or younger: Northwest Territories (Ellef Ringnes

Island), Canada. 

W. W. Hey wood, 1955, Canadian Mining and Metall. Bull., v. 48, no. 514, p. 60, 61.

Hastings Cove formation

Middle Cambrian (Loch Lomond): New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 73-76.

fHatbox tongue (of Chandler formation) 

Lower Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington A<*ad. Sci. Jour, 

v. 41, no. 5, p. 164.

Hat Creek basalt

Recent: California.

C. A. Anderson, 1940, Am. Jour. Sci. v. 238, no. 7, p. 477, 479 (fig. 2), 480-483.

Hatter limestone

Middle Ordovician (Chazyan?) : Pennsylvania.

G. M. Kay, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1969.

Hatterian subseries

Middle Ordovician (Bolarian) : Pennsylvania, Kentucky, West Virginia,

Virginia, Maryland, and New York, and Ontario, Canada.

Marshall Kay, 1947, (abs.) Geol. Soc. America Bull., v. 58, no. 12, pt. 2, p. 1198; 

1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 8, p. 1406-1409.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 161

Haupu formation

Pliocene (?) : Hawaiian Islands (Kauai).

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 85, 87.

Havallah formation

Permian (Wolfcamp and Leonard? age): Nevada.

S. W. Muller, H. G. Ferguson, and E. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Havasu member (of Muav formation) 

Middle Cambrian: Arizona. 

B. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29,109-110.

Haverhill granodiorite

Upper Devonian (?) (New Hampshire magma series): New Hampshire. 

J. B. Hadley and others, 1938, Geologic map and structure sections of the New Hampshire portion of the Mt. Cube quadrangle (1:62,500): N. H. Highway Dept. 

J. B. Hadley, 1942, Geol. Soc. America Bull., v. 53, no. 1, p. 148.

Hawi volcanic series

Pleistocene: Hawaiian Islands (Hawaii).

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, p. 173. 

178-180.

Hawkesbury series

Pennsylvanian: Nova Scotia, Canada.

G. W. H. Norman, 1935, Canada Geol. Survey Mem. 177, p. 45.

Hawkhill formation

Eocene, middle: California.

Ealph Stewart, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 34, sheet 2.

Hawkins limestone member (of Chimneyhill formation) 

Lower Silurian: Oklahoma.

R. A. Maxwell, 1936, Northwestern Univ. Summaries of Doctoral Dissert., v. 4< 

p. 132f 133.

Hawkins Creek member (of Modin formation) 

Upper Triassic: California. 

A. P. Sanborn, [1953], Stanford Univ. Abs. Dissert, v. 27, p. 436.

Hawks Bill formation

Cretaceous (?) : Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. Soc. America Bull., T. 59, no. 8, p. 828-830.

Hayden group

Pennsylvanian: Wyoming and Colorado.

G. B. Condra, B. C. Reed, and O. J. Scherer, 1940, Nebr. Geol. Survey Bull. 13, 

p. 2, 3, 22, 45.

Hayden Branch formation

Upper Pennsylvanian: Indiana and Illinois.

C. A. Malott in K. A. Payne, 1937, Jour. Paleontology, v. 11, no. 4, p. 276-279.

Hayes conglomerate

Miocene or younger: Jamaica, British West Indies.

C. A. Matley, 1929, Geol. Soc. London Quart. Jour., v. 85, pt. 4, p. 462.

Hay Flat limestone

Cretaceous (Albian) : Arizona.

A. A. Stoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 296, 297 (table).
162 GEOLOGIC NAMES OF NORTH AMERICA

Haymeadow Creek member (of Trenton formation) 

Middle Ordovician: Michigan.

R. C. Hussey, 1952, Mich. Dept. Conserv. Geol. Survey Div. Pub. 46, Geol. Ser. 39, 

p. 13-14.

Haynesville formation

Upper Jurassic: Subsurface in Louisiana, Alabama, Arkansas, Mississippi,

and Texas. 

T. H. Philpott and R. T. Hazzard, 1949, in Shreveport Geol. Soc. Guidebook 17th Ann.

Field Trip, fig. 5 (correlation chart). 

L. A. Goebel, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 10, p. 1978-1979.

Hay River series

Upper Devonian: Northwest Territories (Mackenzie), Canada.

A, E. Cameron, 1922, Canada Geol. Survey Summ. Kept. 1921, pt. B, p. 25-29.

Hazel Green member (of Quimbys Mill formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 9.

Hazelwood member (of Mifflin formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 10, 16.

Hazleton Bridge formation

Upper Pennsylvanian: Indiana.

C. A. Malott, 1939, (abs.) Ind. Acad. Sci. Proc., v. 48, p. 114.

Headland gneiss

Precambrian: Newfoundland, Canada.

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 10.

Healy glaciation

Pleistocene (Wisconsin): Alaska.

Clyde Wahrhaftig in T. L. Pewfi and others, 1953, U. S. Geol. Survey Circ. 289, 

p. 8, 13 (table 1).

Heatherton limestone

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 31, 32.

Hedley diorite-gabbro

Pre-upper Lower Cretaceous: British Columbia, Canada. 

H. M. A. Rice, 1947, Canada Geol. Survey Mem. 243, p. 34.

Hedley formation

Triassic: British Columbia, Canada.

H. S. Bostock and D. A. McNaughton, 1940, Canada Geol. Survey Map 568A.

Hegler limestone member (of Cherry Canyon formation) 

Permian: Texas and New Mexico. 

P. B. King in A. K. Miller and W. M. Furnish, 1940, Geol. Soc. America Special

Paper 26f p. 9. 

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 582, pi. 2.

Helenmode member (of Erwin formation)

Lower Cambrian: Tennessee and North Carolina.

P. B. King and others, 1944, Tenn. Div. Geology Bull. 52, p. 31-32, 56.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 163

Hell Gate glacial substage

Pleistocene (Mankato): Colorado.

R. L. Nelson, 1954, Jour. Geology, v. 62, no. 4, p. 333.

Hell Inlet glacial stage

Pleistocene: Colorado.

R. L. Ives, 1942, Geog. Review, T. 32, no. 3, p. 450. 

Hell Roaring member (of Altyn formation)

Precambrian (Belt): Alberta, Canada; and Montana.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, 

p. 1882-1883.

Hells Canyon formation

Pennsylvanian: Colorado and Utah.

M. L. Thompson, 1945, Kans. State Geol. Survey Bull. 60, pt. 2, p. 31-34.

Hells Mesa member (of Datil formation) 

(?) Miocene, upper: New Mexico.

W. H. Tonklng, 1954, Dissert. Abs., v. 14, no. 2, p. 340; [1954?], Geologic map 

and sections of the Puertecito quadrangle, New Mexico (1: 48,000) : N. Mex. Bur. 

Mines Min. Res. [preprint?] Bull. 41, pi. 1.

Helmick formation

Eocene: Oregon.

J. A. Cushman, R. B. Stewart, and K. C. Stewart, 1947, Oreg. Dept. Geology and 

Mineral Industries Bull. 36, pt 5, p. 95-96.

Helveker volcanics

Upper Cretaceous: British Columbia, Canada.

F. A. Kerr, 1948, Canada Geol. Survey Mem. 246, p. 36-37.

Hely member (of Grand Detour formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soe. Guidebook 16th Ann. 

Field Conl, fig. 3.

Hemingford group

Miocene: Nebraska and Wyoming.

A. L. Lugn, 1938, Am. Jour. Sci., 5th ser., v. 36, no. 213, p. 226, 227; 1939, Geol. 

Soc. America Bull., T. 50, no 8, p. 1253-1254.

Hemingfordian age

Miocene: North America.

H. R, Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 12, pi. 1.

Hemphillian age

Pliocene: North America.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 12, pi. 1.

Henefer formation

Upper Cretaceous: Utah.

A. J. Eardley, 1944, Geol. Soc. America Bull., v. 55, no. 7, p. 840-842.

Hennepin member (of Pecatonica formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3,12.

Hennessey Bayou member (of Bucatunna marl and clay) 

Oligocene (Vicksburg): Mississippi. 

E. C. Tonti, 1955, Dissert, Abs., v. 15 no. 8, p. 1372.
164 GEOLOGIC NAMES OF NORTH AMERICA

Henry formation

Triassic: British Columbia, Canada.

H. S. Bostock and D. A. McNaughton, 1940 Canada Geol. Survey Map &68A.

Henryville formation

Lower Mississippian: Indiana.

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 851.

Hepler sandstone formation

Pennsylvanian (Missouri series) : Kansas, Missouri, and Nebraska. 

J. M. Jewett, 1940, Kans. State Geol. Survey Bull. 30, p. 8-9.

Hercules Tower sandstone (in Lutie member of Theodosia formation) 

Lower Ordovician: Missouri and Arkansas.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 29.

Hermosa lens (in Newcastle formation) 

Upper Cretaceous: South Dakota. 

R. M. Grace, 1952, Wyo. Geol. Survey Bull. 44, p. 14,17.

Heron Creek sandstone member (of Gething formation) 

Lower Cretaceous: British Columbia, Canada. 

F. H. McLearn and E. J. W. Irish, 1944, Canada Geol. Survey Paper 44-15, p. 8.

Herrera sandstone

Miocene, lower: Trinidad, British West Indies.

G. A. Waring, 1926, Johns Hopking Univ. Studies in Geology, no. 7, p. 50.

Herrick gravels

Pleistocene: South Dakota.

R. B. Stevenson and L. A. Carlson, 1950, Areal geology of the Bonesteel quadrangle 

(1: 62,500) : S. Dak. State Geol. Survey.

Herring Head conglomerate

Silurian: Newfoundland, Canada.

D. M. Baird, 1953, Newfoundland Geol. Survey Rept. 1, p. 11-16.

Hershey limestone

Ordovician (lower Trenton) : Pennsylvania.

Carlyle Gray, 1952, Pa. Geol. Survey Progress Rept. 140, p. 4-5.

Hibbs Hole formation

Precambrian (Middle Proterozoic) : Newfoundland, Canada. 

R. D. Hutchinson, 1954, Canada Geol. Survey Mem. 275, p. 11-12.

Hickory Ridge member (of Oneota formation) 

Lower Ordovician: Wisconsin. 

G. O. Raaseh, 1952, 111. Acad. Sei. Trans., v. 45, p. 87-88, 92-93.

Hicks cyclothem (including Hicks limestone) 

Pennsylvanian: Illinois.

R. C. Moore and others, 1944, Geol. Soc. America Bull., T. 55, no. 6, Chart 6, column 29. 

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 12,16.

Hidalgo volcanics

Lower Cretaceous (Bisbee group) : New Mexico.

S. G. Lasky, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 5, p. 532, fig. 2.

Hidalgos formation

Eocene, middle: Dominican Republic.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 11.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 165

Hidden Valley dolomite

Silurian and Lower Devonian: California.

J. P. McAllister, 1952, Calif. Dept. Nat. Res., Div. Mines Special Kept. 25, p. 3, 15-18.

Hidden Valley formation

Middle Cambrian (?) : Northeast Greenland.

A. B. Cleaves and B. F. Fox, 1935, Geol. Soe. America Bull., v. 46, no. 3, p. 475, pi. 43.

Hidden Valley group

Silurian and Devonian : British Columbia, Canada.

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Higginsville cyelothem (including Higginsville limestone)

Pennsylvanian (Des Moines) : Missouri, Iowa, Kansas, and Nebraska. 

L. M. Cline, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 1, p. 36. 

J. M. Jewett, 1945, Kans. State Geol. Survey Bull. 58, p. 25-26, 62-63.

High Bluff member (of Pendleton formation)

Eocene, lower (Wilcox) : Louisiana and Texas.

Richard Wasem and L. J. Wilbert, Jr., 1943, Jour. Paleontology, T. 17, no. 2, p. 187, 

fig. 4.

High Cascade series

Pliocene to Recent: California.

Howel Williams, 1949, Calif. Dept. Nat. Res., Div. Mines Bull. 151, p. 35-38. 

High Falls granite

Precambrian: Quebec, Canada.

M. E. Wilson, 1920, Canada Geol. Survey Pub. (Map) 1691.

Pierre Mauffette, 1949, Quebec Dept. Mines Prelim. Rept. 223, p. 12.

Highland shale member (of Wellington formation) 

Permian: Kansas. 

W. A. Ver Wiebe, 1937, Wichita Municipal Univ. Bull. v. 12, no. 5, p. 5-6.

Highlands formation

Precambrian: Newfoundland, Canada.

C. B. Fritts, 1953, Newfoundland Geol. Survey Rept. 4, p. 10-13.

Highlands sandstone

Mississippian: Newfoundland, Canada. 

D. M. Baird, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 86, 90.

Highway limestone

Middle Pennsylvanian: Nevada.

H. G. Ferguson, R. J. Roberts, and S. W. Muller, 1952, Geology of the Golconda quadrange, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 15].

Highwood sandstone (in Wapiabi formation) 

Upper Cretaceous: Alberta, Canada.

J. B. Webb and L. G. Hertlein, 1934, Am. Assoc. Petroleum Geologists Bull., v. 18, 

no. 11, p. 1402.

Higuerlto member (of Arroyo Blanco formation) 

Miocene, lower: Dominican Republic. 

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 29.

Hiirippo limestone

See Hirippo limestone.
166 GEOLOGIC NAMES OF NORTH AMERICA

Hilina volcanic series

Pleistocene (?) : Hawaiian Islands (Hawaii).

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, p. 100, 

101,102.

Hill Group

Precambrian (pre-Huronian) : Ontario, Canada. 

H. C. Cooke, 1946, Canada Geol. Survey Bull. 3, p. 18-19.

Hillier member (of Cobourg formation)

Middle Ordovician (Mohawkian): Ontario, Canada; and New York. 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 280-281.

Hillman gneissoid tonalite

Precambrian (Algoman) : Minnesota.

M. S. Woyski, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1002, 1011, pi. 1.

Hill Ridge biotite schist

Cambro-Ordovician(?) : Maine.

L. W. Fisher, 1936, Am. Mineralogist, v. 21, no. 5, p. 323.

Hills Pond peridotite

Cretaceous (?) : Kansas.

H. C. Wagner, 1954, U. S. Geol. Survey Geol. Quadrangle Map GQ 49.

Hilltop formation

Pennsylvanian: Oklahoma.

W. F. Tanner, 1953, Am. Assoc. Petroleum Geologists Bull., v. 3T, no. 8, p. 2046-2050.

Hinchinbrooke granite

Precambrian: Ontario, Canada.

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1404-1405.

Hinkley Valley complex

Precambrian: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 77-79.

Hirippo limestone

Miocene [Aquitanian]: Mariana Islands (Rota).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol.

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan Hydrog.

Office Bull., v. 11, p. 54, table 4 [English translation in library of U. S. Geol. Survey,

p. 65].

Hoadley formation

Precambrian (Belt series): Montana.

Charles Deiss, 1943, Geol. Soe. America Bull., v. 54, no. 2, p. 213, 216-217.

Hoback formation

Eocene, lower: Wyoming.

A. J. Eardley and others, 1944, Hoback-Gros Ventre-Teton Field Conference [geologic

map]. Privately printed. 

Leland Horberg, Vincent Nelson, and Victor Church, 1949, Geol. Soc. America Bull.,

v. 60, no. 1, p. 187, 190.

Hobble formation

Pennsylvanian: Utah.

H. J. Bissell, 1936, Iowa Acad. Sci. Proc., v. 43, p. 240, 241-242.
GEOLOGIC NAMES OF NOETH AMERICA INTRODUCED IN 19 3 6-1955 167

Hobsons clay

Upper Cretaceous: Trinidad, British West Indies.

P. W. Jarvis, 1929, Inst. Petroleum Technologists Jour., v. 15, no. 75, p. 440.

Hockingport sandstone

Upper Carboniferous: Ohio.

W. D. Martin, 1955, Dissert. Abs., v. 15, no. 8, p. 1371.

Hodge complex

Precambrian: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 79, 97-98.

Hodge volcanic series

Upper Paleozoic (?) : California.

O. B. Bowen, Jr., in L. A. Wright and others, 1953, Calif. Jour. Mines and Geology,

v. 49, nos. 1-2, pi. 2.

O. E. Bowen, Jr., 1954, Calif. Dept. Nat. Kes., Div. Mines Bull. 165, p. 16 (fig. 2), 

34-36.

Hodgewater group

Precambrian (Upper Proterozoic) : Newfoundland, Canada. 

R. D. Hutchinson, 1954, Canada Geol. Survey Mem. 275, p. 12.

Hoffmann flow

Recent: California.

H. A. Powers, 1932, Am. Mineralologist, T. 17, no. 7, p. 276-278, 288, pi. 1.

Hoffner member (of Ste. Genevieve limestone) 

Mississippian (Iowa series): Illinois.

J. M. Weller in Stuart Weller and F. P. Krey, 1939, 111. State Geol. Survey Kept. 

Inv. 60, p. 7.

Holcomb quartz monzonite

Cretaceous (?) : California.

L. P. Noble, 1954, U. S. Geol. Survey Geol. Quadrangle Map GQ 50.

Holder formation

Pennsylvanian (Virgilian) : New Mexico.

L. C. Pray, 1954, N. Mex. Geol. Soc. Guidebook 5th Field Conf., p. 93.

Holitna group

Middle or Upper Silurian: Alaska.

W. M. Cady and others, 1955, U. S. Geol. Survey Prof. Paper 268, p. 23-27.

Holland limestone

Pennsylvanian: Indiana.

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 30, 87.

Hollis limestone member (of Deese formation) 

[Pennsylvanian]: Oklahoma. 

C. C. Branson, 1955, Hopper, v. 15, nos. 10-11, p. 129.

Hollis Reservoir formation

Upper Jurassic: Trinidad, British West Indies.

R. A. Liddle, 1946, The geology of Venezuela and Trinidad, 2d ed.: Ithaca, N. Y., 

Paleont. Research Inst, p. 701.

Hollycrest formation

Miocene, middle: California.

G. J. Neuerburg, 1953, Calif. Dept. Nat. Res., Div. Mines Special Rept. 33, p. 6 (table 

1), 23-24, pi. 1.
168 GEOLOGIC NAMES OF NORTH AME'RICA

Holmes gneiss

Precambrian (post-Keewatin): Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Rept. 24, p. 11.

Holokuk basalt

Tertiary: Alaska.

W. M. Cady and others, 1955, U. S. Geol. Survey Prof. Paper 268, p. 53-55.

Holtsclaw Hill facies (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 139-145.

Holy Cross sandstone 

Silurian: Kentucky.

W. B. Jillson, 1952, The Holy Cross sandstone: Frankfort, Ky., Roberts Printing Co., 

p. 5-14.

Hollyrood granite

Precambrian: Newfoundland (Labrador), Canada.

M. B. Wilson, 1939, Geologic der Erde, North America, v. 1, p. 282.

Holz shale member (of Ladd formation) 

Upper Cretaceous: California. 

W. P. Popenoe, 1937, Jour. Paleontology, T. 11, no. 5, p. 380.

Homberg group

Mississippian (Chester) : Illinois and Missouri.

J. M. Weller, 1939, Kans. Geol. Soc. Guidebook 13th Ann. Field Conf., p. 131, 135.

Home glacial substage

Pleistocene (Wisconsin) : Colorado, Wyoming, and New Mexico. 

L. L. Ray, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 314 ; 1940, Geol. Soc. America 

Bull., v. 51, no. 12, pt. 1, p. 1857-1860.

Home Foreland beds

Lower Cretaceous (Aptian-Albian?) : Northeast Greenland.

Wolf Maync, 1949, Meddel. om Gr0nland, bind 133, nr. 3, p. 137, 211-217, 281.

Homer quartzite

Triassic(?) : California.

Cordell Durrell, 1940, Calif. Univ. Dept Geol. Sci. Bull., v. 25, no. 1, p. 15, 116.

Homochitto member (of Pascagoula formation) 

Miocene: Mississippi. 

G. F. Brown and W. F. Guyton, 1943, Miss. State Geol. Survey Bull. 56, p. 22-23, 32-37.

Honakta formation

Upper Triassic: British Columbia, Canada.

F. A. Kerr, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-30; 1948, Mem. 248, 

p. 20(table), 28, geol. map.

Honda formation

Upper Jurassic: California.

T. W. Dibblee, Jr., 1950, Calif. Dept. Nat. Res., Div. Mines Bull. 150, p. 22.

Hondo member (of Woodbend formation)

Upper Devonian: Alberta, Canada (subsurface).

H. R. Belyea, 1952, Canada Geol. Survey Paper 52-27, p, 25-28.

Hondo shale or formation

See Arroyo Hondo shale member (of Lodo formation).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 169

Hondo slate

Precambrian: New Mexico.

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 23.

Honeycut formation (of Ellenburger group) 

Lower Ordovician: Texas.

V. E. Barnes and P. E. Cloud, Jr., 1945, Tex. Univ. Bur. Econ. Geology Min. Res. Circ. 

34, p. 1, 3-7, 31-41. /

Honolua volcanic series

Pliocene, upper(?), or Pleistocene, lower: Hawaiian Islands (Maui). 

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 159, 173-179.

Honomanu volcanic series

Tertiary, upper (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 65, 68-74.

Hoodoo lavas

Quaternary: British Columbia, Canada.

F. A. Kerr, 1948, Canada Geol. Survey Mem. 246, p. 41-45.

Hook limestone member (of Macy formation) 

Middle Ordovician: Missouri. 

E. B. Larson, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 9, p. 2060-2061.

Hookton formation

Pleistocene, upper: California.

B. A. Ogle, 1953, Calif. Dept. Nat. Res., Div, Mines Bull. 164, p. 13 (fig. 3), 57-63, pi. 1.

Hooper formation

Eocene, lower (Wilcox) : Texas.

W. W. Sharp, Jr., 1953, in AAPG, SEPM, SEG Guidebook Field Trip Routes Joint Ann. 

Meeting, March, p. 53 (geol. map).

Hoover conglomerate unit (in Sycamore Canyon member of Puente formation) 

Miocene, upper: California. 

C. J. Kundert, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 18, p. 6-7.

Hopedale gneiss

Precambrian: Newfoundland (Labrador), Canada.

S. K. Roy, 1941, Field Mus. Nat. History Geol. Mem., v. 2, p. 20. 

E. H. Kranck, 1953, Canada Geol. Survey Bull. 26, p. 33, 34.

Hope Gate limestone or series.

Miocene, middle or upper: Jamaica, British West Indies.

H. R. Versey, 1953, Jamaica Geol. Survey Dept. Ann. Rept. 1951-52, p. 2, 4.

Hopewell series

Precambrian: New Mexico.

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 21-23, 42-43.

Hopkintonian series

Silurian (Early Yorkic) : Missouri.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 75, no. 2, p. 157 (chart).

Hopwood conglomerate

Lower Mississippian (Oil Lake) : Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Rept. 126, p. 14 (footnote).
170 GEOLOGIC NAMES OF NORTH AMERICA

Horcones formation

Eocene to Oligocene: Vera Cruz, Mexico.

Ramiro Robles Ramos, 1942, Irrigaci6n en Mexico, v. 23, no. 3, p. 45 (correlation

chart).

Rudolfo Suarez C., 1950, AsociaciOn Mexicana Ge61ogos Petroleros Bol., v. 2, no. 11, 

p. 653-654.

Hornbrook formation

Upper Cretaceous: Oregon and California.

F. G. Wells, 1955, U. S. Geol. Survey Mineral Inv. Field Studies Map MF 38.

Hornby formation

Upper Cretaceous: British Columbia, Canada.

J. L. Usher, 1952, Canada Geol. Survey Bull. 21, p. 21, 29-30.

Hornby Bay series

Precambrian: Northwest Territories (Mackenzie), Canada.

D. F. Kidd, 1933, Canada GeoL Survey Summ. Rept. 132, pt. C, p. 13, Map 296A.

Home rhyolites

Precambrian: Quebec, Canada.

J. A. Dresser and T. C. Denis, 1949, Quebec Dept. Mines Geol. Rept. 20, T. 3, p. 339-340.

Hornet conglomerate

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 6.

Hornsilver dolomite member (of Minturn formation) 

Pennsylvanian: Colorado. 

Ogden Tweto, 1949, Colo. Sci. Soc. Proc., v. 15, no. 4, p. 152,199.

Horquilla limestone

Pennsylvanian: Arizona.

James Gilluly, J. R. Cooper, and J. S. Williams, 1954, U. S. Geol. Survey Prof. Paper 

266, p. 16-18.

Horry clay

Pleistocene (probably early Peorian) : South Carolina.

C. W. Cooke, 1937, Washington Acad. Sci. Jour., v. 27, no. 1, p. 1-5.

Horsehead tongue (of Mancos shale) 

Upper Cretaceous: New Mexico. 

W. S. Pike, Jr., 1947, Geol. Soc. America Mem. 24, p. 9, 35.

Horseranch group

Lower and Middle Cambrian: British Columbia, Canada. 

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Horsethief formation 

Pliocene: California.

O. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Hospital porphyry

Pliocene (?): Nevada.

James Gilluly, 1946, U. S. Geol. Survey Prof. Paper 209, p. 44.

Hospital Hill formation

Eocene, upper: Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special Pub. 24, 

p. 3-4.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 171

Hosston formation

Lower Cretaceous: Subsurface in Louisiana, Arkansas, and Texas. 

R. W. Imlay, 1940. Ark. Geol. Survey Inf. Circ. 12, p. 28-30.

Hostetter limestone

Permian (Greene) : Ohio.

A. T. Cross, W. H. Smith, and Thomas Arkle, Jr., 1950, Field guide for the special field 

conference on the stratigraphy, sedimentation and nomenclature of the Upper 

Pennsylvanian and Lower Permian strata (Monongahela, Washington and Greene 

series) in the northern portion of the Dunkard Basin of Ohio, West Virginia, and 

Pennsylvania: W. Va. Geol. and Econ. Survey, [pi. 1].

Hostler member (of Hatter formation)

Middle Ordovician (Chazyan) : Pennsylvania. 

G. M. Kay, 1943, Econ. Geology, v. 38, no. 3, p. 193,195.

Hothouse formation

Precambrian: Georgia and North Carolina.

V. J. Hurst, 1955, Ga. Geol. Survey Bull. 63, p. 35-40.

Hot Springs formation

Pennsylvanian (Derry) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 2T, 38-39.

House limestone

Lower Ordovician (Canadian) : Utah.

L. F. Hintze, 1951, Utah Geol. Mineralog. Survey Bull. 39, p. 12-13.

Housum member (of Mercersburg formation)

Middle Ordovician (Trentonian) : Pennsylvania.

L. C. Craig, 1949, Geol. Soc. America Bull., v. 60, no. 4, p. 715 (fig. 1), 732-733.

Houx cyclothem (including Houx limestone)

Pennsylvanian (Des Moines) : Missouri, Iowa, Kansas, and Nebraska. 

L. M. Cline, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 1, p. 36, 37. 

J. M. Jewett, 1945, Kans. State Geol. Survey Bull. 58, p. 63.

Howard Creek sand (in Kaskapau formation) 

Cretaceous (Cenomanian) : Alberta, Canada. 

C. R. Stelck and J. H. Wall, 1954, Alberta Research Council Rept. 68, p. 6, 8.

Howard Quarry sandstone

Upper Devonian: Pennsylvania.

K. B. Caster, 1939, Jour. Paleontology, v. 13, no. 5, p. 532.

Howells Ridge formation

Lower Cretaceous (Bisbee group): New Mexico.

S. G. Lasky, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 5, p. 533, fig. 2.

Howey diorite

Precambrian (pre-Algoman) : Ontario, Canada.

H. C. Horwood and N. B. Keevil, 1943, Jour. Geology, v. 51, no. 1, p. 20.

Howse group

Precambrian (Proterozoic) : Quebec and Newfoundland, Canada. 

M. J. Frarey, 1952, Canada Geol. Survey Paper 52-16, p. 2.

Hoyle sedimentary series

Precambrian: Ontario, Canada.

W. R. Dunbar, 1948, in Structural geology of Canadian ore deposits: Canadian Inst. 

Mining and Metallurgy, p. 445, fig. 1.

426779 57 12
172 GEOLOGIC NAMES OF NORTH AMERICA

Huajuapan beds

Tertiary(?): Oaxaea, Mexico.

G. P. Salas, 1949, AsociaciOn Mexicana GeOlogos Petroleros Bol., v. 1, no. 2, p. 120.

Hualalai volcanic series

Pleistocene and Recent: Hawaiian Islands (Hawaii),

C. K. Wentworth, 1938, Hawaiian Volcano Observatory 3d Special Kept, p. 88-89. 

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, 

p. 139-148.

Hualpai limestone

Pliocene (?): Nevada.

C. R. Longwell, 1936, Geol. Soc. America Bull., v. 47, no. 9, p. 1429-1433.

Huasteca formation

Oligocene, lower: Vera Cruz, Mexico.

J. M. Muir, 1936, Geology of the Tampico region, Mexico : Tulsa, Okla., Am. Assoc. 

Petroleum Geologists, p. 124-131.

Huayacocotla formation

Lower Jurassic: Vera Cruz, Puebla, and Hidalgo, Mexico. 

R. W. Imlay and others, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p. 

1750-1753.

Hubbard Hill member (of Littleton formation) 

Lower Devonian: New Hampshire. 

M. T. Heald, 1950, Geol. Soc. America Bull., v. 61, no. 1, p. 46-50, 69-70, 78-79.

Hub Lake syenite

Precarnbrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 111-112.

Huckleberry conglomerate

Lower Cambrian(?): Washington.

W. A. G. Bennett, 1941, Wash. State Dept. Conserv. Devel., Div. Geology, Bept. 

Inv. 5, p. 8.

Huckleberry greenstone

Lower Cambrian(?): Washington.

H. E. Culver, 1939, Wash. State Coll. Monthly Bull., v. 22, no. 7, pt. 1, p. 19. 

W. A. G. Bennett, 1941, Wash. State Dept. Conserv. Devel., Div. Geology, Kept. 

Inv. 5, p. 8.

Hudson member (of Richfield formation) 

Precambrian: British Columbia, Canada.

W. E. Cockfleld and A. H. Lang, 1937, Canadian Inst. Mining and Metallurgy Trans., 

V. 40, p. 465.

Hudson Bay formation

Devonian: Manitoba, Canada (subsurface).

J. R. Ower, 1952, Oil in Canada, v. 5, no. 1, p. 54; 1953, Canadian Inst/ Mining and 

Metallurgy Trans., v. 56, p. 395.

Hudson Highlands complex 

Precambrian: New York. 

K. E. Lowe, 1950, Geol. Soc. America Bull., v. 61, no. 3, p. 142.

Huehue flow

Recent: Hawaiian Islands (Hawaii).

G. A. Macdonald, 1949, U. S. Geol. Survey Prof, Paper 214-D, p. 75.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 173

Huelster formation 

Tertiary: Texas. 

G. K. Eifler, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 4, p. 342-345, pi. 1.

Hughes Gap formation

Precambrian: Georgia and North Carolina. 

V. J. Hurst, 1955, Ga. Geol. Survey Bull. 63, p. 21-35.

Hughes Lake conglomerate

Precambrian: Manitoba, Canada.

J. D. Allan, 1948, Precambrian, v. 21, no. 3, p. 6.

Huichica formation

Pleistocene: California.

C. E. Weaver, 1949, Geol. Soc. America Mem. 35, p. 16 (table 3), 98.

Huizachal formation

Jurassic: Tamaulipas, Hidalgo, Durango, Vera Cruz, Puebla, San Luis Potosi;

and Nuevo Leon, Mexico.

K. W. Imlay and .others, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p 

1750-1753.

Hulen beds

Lower Cretaceous: California.

F. M. Anderson, 1938, Geol. Soc. America Special Paper 16, p. 38 (table 1), 67-68.

table 2.

Hulett sandstone member (of Sundance formation) 

Upper Jurassic: Wyoming and South Dakota. 

E. W. Imlay, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 2, p. 255-257.

Humber Falls formation

Lower Carboniferous: Newfoundland, Canada.

A. O. Hayes, 1949, Newfoundland Geol. Survey Inf. Circ. 6, Map 2.

Hume shale member (of Perrysburg formation) 

Upper Devonian: New York.

J. P. Pepper and Wallace de Witt, Jr., 1951, U. S. Geol. Survey Oil and Gas Inv. 

Chart OC 45.

Hummel facies (of Muldraugh formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 214-217.

Humpback gneiss

Precambrian (Archean?) : North Carolina.

C. E. Hunter and P. W. Mattocks, 1936, TVA Div. Geology Bull. 4, p. li-12.

Hungerford formation

Upper Cambrian: Vermont.

Charles Schuchert, 1937, Geol. Soc. America Bull., v. 48, no. 7, p. 1047-1049.

Hungry Hollow formation

Middle Devonian: Ontario, Canada.

G. A. Cooper and A. S. Warthin, 1941, Washington Acad. Sci. Jour., v. 31, no. 6, p. 260.

Hungry Run sandstone member (of Orangeville shale) 

Mississippian: Pennsylvania. 

Wallace de Witt, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 11, p. 1364-1366.
174 GEOLOGIC NAMES OF NORTH AMERICA

Hungry Valley formation

Pliocene, upper: California.

J. C. Crowell, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 8, p. 1629 

(fig. 5), 1633-1638.

Hunter sandstone and conglomerate in Puente formation 

Miocene, upper: California.

M. L. Krueger, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 363. 

A. O. Woodford, T. G. Moran, and J. S. Shelton, 1946, Am. Assoc. Petroleum Geologists 

Bull., v. 30, no. 4, p. 521, 527.

Hunterian subseries

Middle Ordovician (Bolarian) : Pennsylvania, Kentucky, West Virginia,

Virginia, Maryland, and New York, and Ontario, Canada. 

Marshall Kay, 1947, (abs.) Geol. Soc. America Bull., v. 58, no. 12, pt. 2, p. 1199;

1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 8, p. 1409-1410.

Hunting Hill greenstone

Precambrian(?) : Rhode Island and Massachusetts.

Alonzo Quinn, R. G. Ray, and W. L. Seymour in Alonzo Quinn and others, 1948, E. I. 

Port and Indus. Devel. Comm. Geol. Bull. 3, p. 12, geol. map.

Huntsville fanglomerate 

Pliocene, upper: Utah. 

A. J. Eardley, 1955, Utah Geol. Soc. Guidebook 10, p. 39, fig. 9.

Hurley formation

Jurassic: British Columbia, Canada.

C. E. Cairnes, 1937, Canada Geol. Surrey Mem. 213, p. 18-21.

Hurley Creek formation

Pennsylvanian: New Brunswick, Canada.

J. E. Muller, 1949, Canada Geol. Survey Paper 49-13 (Prelim. Map 49-13A) ; 1950, 

Mem. 260, p. 8 (table), 19-20, geol. map.

Huron City sandstones and shales

Mississippian (Kinderhook) : Michigan.

H. M. Martin, 1936, The centennial geological map of the southern peninsula of 

Michigan (1:500,000) : Mich. Geol. Survey Div. Pub. 39 (Geol. Ser. 33).

Hurricane graywacke

Precambrian: North Carolina, Georgia, and Tennessee.

G. W. Stose and A. J. Stose, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, 

p. 1233 ; 1949, v. 60, no. 2, p. 271-272, 274-278.

Hurricane marine lentil (in Landrum member of Cook Mountain formation) 

Eocene (Claiborne) : Texas. 

H. B. Stenzel, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1665-1670.

Hurricane Bridge limestone

Middle Ordovician: Virginia.

E. L. Miller and W. P. BrosgS, 1950, D. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 104.

Hurry Fjord granite

See Hurry Inlet granite.

Hurry Inlet formation

Cambro-Ordovician(?) : Northeast Greenland.

E. H. Kranck, 1935, Meddel. om Gr0nland, bind 95, nr. 7, p. 11, pi. 3.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 175

Hurry Inlet gneisses

Lower Paleozoic (Caledonian?): Northeast Greenland.

B. H. Kranck, 1935, Meddel. om Grftaland, bind 95, nr. 7, p. 10, 26-47.

Hurry Inlet granite

Devonian (?): Northeast Greenland.

E. H. Kranck, 1935, Meddel. om Grffnland, bind 95, nr. 7, p. 10, 84-89, pi. 3.

Hurry Inlet series

See Cape Brown and Hurry Inlet series.

Hurwal formation

Upper Triassic: Oregon.

W. D. Smith and J. E. Alien, 1941, Oreg. Dept. Geology and Mineral Industries Bull. 

12, p. 6, 13-14.

Hurwitz group

Precambrian: Northwest Territories (Keewatin), Canada. 

G. M. Wright, 1955, Canada Geol. Survey Paper 55-17, p. 6-7.

Hyde formation

Middle Jurassic: Oregon.

R. L. Lupher, 1941, Geol. Soe. America Bull., v. 52, no. 2, p. 227, 255-259.

Hye granite

Precambrian: Texas.

V. B. Barnes, R. F. Dawson, and G. A. Parkinson, 1947, Tex. Univ. Bur. Econ. Geology 

Pub. 4246, p. 50 (fig. 3).

Hyolithes Creek formation

See Hyolithus Creek formation.

Hylolithus Creek formation

Cambrian (post-Lower Cambrian, pre-Upper Ozarkian): Northeast Greenland. 

Christian Poulsen, 1930, Meddel. om Grjzfnland, bind 74, nr. 12, p. 310-311.

Hyrum dolomite member (of Jefferson formation) 

Devonian: Utah. 

J. S. Williams, 1948, Geol. Soc. America Bull., v. 59, no. 11, p. 1139, 1140.

Ibex limestone

Lower Permian: Texas.

M. G. Cheney, 1948, Abilene Geol. Soc. [Guidebook] Spring Field Trip, June 11-12, 

p. 5.

Icaiche1 formation

Oligocene or Miocene: Yucatan, Mexico; and Guatemala.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg,

Band 8, Abt. 4a, Heft 29, pis. 3, 4.

Manuel Alvarez, Jr., 1954, Asociacifin Mexicana GeOlogos Petroleros Bol., v. 6, 

nos. 5-6, p. 209.

Ice Box shale

Middle Ordovician (Mohawkian): South Dakota.

M. R. McCoy, 1952, Billings Geol. Soc. Guidebook 3d Ann. Field Conf., p. 45-46.

Ice Springs Craters flow 

Recent: Utah. 

G. B. Maxey, 1946, Am, Jour, Set, v. 244, no, 5, p. 328,
176 GEOLOGIC NAMES OF NORTH AMERICA

Idak basalt

Tertiary and Quaternary: Alaska (Aleutian Islands).

P. M. Byers, Jr., and others, 1947, U. S. Geol. Survey Alaskan Volcano Inv. Eept. 2, 

pt. 3, p. 28.

Idenbro cyclothem (including Idenbro limestone)

Pennsylvanian (Des Moines): Kansas, Missouri, and Nebraska. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 340; 1945, Bull. 58, 

p. 47-48, 69, 70.

Iditarod basalt

Upper Cretaceous and Paleocene(?) : Alaska.

W. M. 'Cady and others, 1955, U. S. Geol. Survey Prof. Paper 268, p. 47-50.

Igaliko sandstone

Devonian (?): Southwest Greenland.

N. V. Usslng, 1911, Meddel. om Gr0nland, hefte 38, p. 13-22.

lisa beds

Pliocene: Caroline Islands (Kusaie).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 70, table 5 [English translation In library of U. S. Geol. Survey, p. 85].

Ijamsville phyllite

Precambrian(?): Maryland.

A. I. Jonas and G. W. iStose, 1938, Washington Acad. Sci. Jour., v. 28, no. 8, p. 346.

Ikertoq gneiss complex

Precambrian: Southwest Greenland.

Hans Ramberg, 1948, Meddel. Dansk Geol. Foren., bind 11, hefte 3, p. 313, 318-319, 

fig. 1.

Ilimausak complex

Devonian (?) : Southwest Greenland.

N. V. Ussing, 1911, Meddel. om Gr0nland, hefte 38, p. 23, 108-120.

Ilimausak porphyries

Devonian (?): Southwest Greenland.

N. V. Ussing, 1911, Meddel. .om Gr0nland, hefte 38, p. 90-92, 217-221.

Illipah formation

Upper Mississippian: Nevada and Utah.

F. W. Christiansen, 1951, Utah Geol. Mineralog. Survey [Utah Geol. Soc.] Guidebook

6, p. 76. - 

R. C. Spivey, 1954, Pacific Petroleum Geologist, v. 8, no. 7, p. 1.

Ilmon basalt

(?) Miocene, lower:. California.

T. W. Dibblee, Jr., and C. W. Chesterman, 1953, Calif. Dept. Nat. Res^ Div. Mines 

Bull., 168, p. 12, 37-38.

Imperial formation

Upper Devonian: Northwest Territories (Mackenzie) and Yukon, Canada. 

G. S. Hume and T. A. Link, 1945, Canada Geol. Survey Paper 45-16, p. 34-39.

Indart sandstone

Eocene: California.

N. It. Taliaferro, [1949], Geologic map of the Holliuter quadrangle, California 

(1:62,500) : Calif. Dept. Nat. Res., Div. Mines [preprint?] Bull. 143, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 177

Independence formation

Triassic and/or older: British Columbia, Canada.

H. S. Bostocfc and D. A. McNaughton, 1940, Canada Geol. Survey Map 568A.

Indian Creek granite

Precambrian: Colorado.

M. F. Boos and E. J. Aberdeen, 1936, (abs.) Geol. Soc. America ProC. 1935, p. 6T; 

1940, Geol. Soc. America Bull., v. 51, no. 5, p. 699, 728.

Indian Fort shale member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 174-176, 188-189.

Indian Island group

Silurian: Newfoundland, Canada.

D. M. Baird, 1950, Canada Geol. Survey Paper 50-22, p. 32-36.

Indian Meadows formation

Eocene, lower: Wyoming.

J. D. Love, 1939, Geol. Soc. America Special Paper 20, p. 58-63.

Indian Mountain leucogranodiorite

Cretaceous: California.

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 85-87.

Indianola formation or group 

Upper Cretaceous: Utah.

S. L. Schoff, 1938, Ohio State Univ. Abs. Doctors' "Dissert. 25, p. 378. 

E. M. Spieber, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 128-130.

Indian River hornblende syenite 

Precambrian: New York. 

A. F. Buddington, 1939, Geol. Soc. America Mem. 7, p. 85, 285, 286.

Indiantown gabbro

Pre-Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 33-34.

Infierno formation

Pliocene, upper: Baja California, Mexico.

I. F. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p. 1781-1782.

Ingenika group

Lower Cambrian: British Columbia, Canada.

E. F. Roots, 1948, Canada Geol. Survey Paper 48-5, p. 6-9.

Ingleside formation 

Recent: Texas. 

W. A. Price, 1939 (abs.) Am. Assoc. Petroleum Geologists Bull., v. 23, no. 12, p. 1875.

Inglis member (of Moodys Branch formation) 

Eocene (Jackson): Florida. 

E. O. Vernon, 1951, Fla. Geol. Survey Bull. 33, p. 115-140.

Ingramian stage

Late Cretaceous: California.

P. P. Goudkoff, 1945, Am, Assoc. Petroleum Geologists Bull., v. 29, no. 7, p, 985-987.
178 GEOLOGIC NAMES OF NORTH AMERICA

Inklin group

Lower Cretaceous (?): British Columbia, Canada.

F. A. Kerr, 1945, Canada Geol. Survey Papar (Prelim. Map) 45-30; 1948, Mem. 248, 

p. 19 (table), 37-38, geol. map.

Inman formation

Ordovician: Tennessee.

C. W. Wilson, Jr., 1949, Tenn. Div. Geology Boll. 56, p. 175-179.

Inoceramus series

Upper Cretaceous (Cenomanian) : Jamaica, British West Indies. 

V. A. Zans, 1953, Jamaica Geol. Survey Dept. Ann. Kept. 1951-52, p. 2. 

L. J. Chubb, 1955, Geol. Mag., v. 92, no. 3, p. 190-192.

Inskip formation

Permian (?) : Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Interlake group

Silurian: Manitoba, Canada.

A. D. Baillie, 1951, Manitoba Dept. Mines and Nat. Res. Div. Mines Pub, 50-1, p. 6.

Intrepid Bay formation

Cretaceous or Tertiary(?): Northwest Territories (Cornwallis Island),

Canada. 

R. Thorsteinsson and Y. O. Fortier, 1954, Canada Geol. Survey Paper 53-24, p. 14-15.

Inverness formation

Pennsylvanian: Nova Scotia, Canada.

G. W. H. Norman, 1935, Canada Geol. Survey Mem. 177, p. 47-48.

Iowa Gulch porphyry

Upper Cretaceous (?) or Tertiary, lower: Colorado.

C. H. Behre, Jr., E. N. Goddard, and A. B. Sandberg, 1939, Preliminary geologic map

of west slope of Mosquito Range in the vicinity of Leadville, Colorado (1:12,000) :

U. S. Geol. Survey. 

C. H. Behre, Jr., 1939, Colo. Sci. Soc. Proc., v. 14, no. 2, p. 64.

Ipsorisok strata

Miocene: West Greenland.

A. E. NordenskiOld, 1872, Geol. Mag., v. 9, p. 458-459.

Ireland Point volcanics (in Maiden Point sandstone) 

Ordovician: Newfoundland, Canada. 

J. R. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 10.

Ireson felsite

Upper Silurian or Lower Devonian: Maine.

G. H. Chadwick, 1939, Am. Jour. Sci., v. 237, no. 5, p. 361; 1942 (abs.) Geol. Soc. 

America Bull., v. 53, no. 12, pt. 2, p. 1796-1797.

Ireton member (of Woodbend formation) 

Devonian: Alberta, Canada (subsurface).

D. B. Layer and others, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, 

p. 1821.

Iron Canyon aggloremate member (of Tuscan formation) 

[Pliocene]: California. 

R. C. Treasher, 1947 (abs.) Geol. Soc. America Bull., v. 68, no. 12, pt. 2, p. 1257.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 179

Iron Creek glaciation

Pleistocene (pre-Wisconsin): Alaska.

D. M. Hopkins in T. L. P6w6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 10, 13 

(table 1).

Iron Gate facies (of Clinton formation) 

Middle Silurian (Niagaran) : Virginia. 

Charles Butts, 1940, Va. Geol. Survey Bull. 52, pt. 1, p. 238, 239, 242-243, 439b.

Iron Springs formation

Upper Cretaceous (?) : Utah.

J. H. Mackin, 1947, Utah Geol. Soc. Guidebook 2, p. 7-8, 9.

Ironton granite

Precambrian, Missouri.

H. B. Graves, 1938, Acad. Sci. St. Louis Trans., v. 29, no. 5, p. 119.

Iroquois flow (in Portage Lake lava series)

Precambrian (middle Keweenawan series) : Michigan.

W. S. White, H. R. Cornwall, and R. W. Swanson, 1953, U. S. Geol. Survey Geol. 

Quadrangle Map GQ 27 [1954].

Irvine facies (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 166-177.

Irvine shale (in Santiago formation) 

Eocene: California.

George Lunetta, 1953, Calif. Dept. Nat. Res., Div. Mines Min. Inf. Service, v. 6, no. 10, 

p. 4-6.

Irvingtonian age.

Pleistocene, early: North America.

D. E. Savage, 1951, Calif. Univ. Pubs. Dept., Geol. Sci. Bull., v. 28, no 10, p. 289.

Irwinton sand member (of Barnwell formation) 

Eocene, upper: Georgia. 

P. E. LaMoreaux, 1946, Ga. Geol. Survey Bull. 50, pt. 1, p. 17-21.

Isachsen formation

Lower Cretaceous or younger: Northwest Territories (Ellef Bingnes Island ) f

Canada. 

W. W. Heywood, 1955, Canadian Mining and Metall. Bull., v. 48, no. 514, p. 60, 61

Isf jord zone

Lower Paleozoic (Caledonian) : Northeast Greenland.

C. E. Wegmann, 1935, Meddel. om Gr0nland, bind 103, nr. 3, p. 30-31, pi. 1.

Ishpa formation

Precambrian or Lower Cambrian: British Columbia, Canada. 

A. H. Lang, 1938, Canada Geol. Survey Paper 38-16, p. 12-13.

Iskut Elver lava

Quaternary: British Columbia, Canada.

P. A. Kerr, 1948, Canada Geol. Survey Mem. 246. p. 40-41.

Island Lakes gabbroic anorthosite 

Precambrian: Ontario, Canada. 

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.
180 GEOLOGIC NAMES OF NORTH AMERICA

Islay member (of Mannville formation)

Lower Cretaceous: Albert, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1614.

Isortoq gneiss complex

Precambrian: Southwest Greenland.

Hans Ramberg, 1948, Meddel. Dansk Geol. Foren., bind 11, hefte 3, p. 313, 319-320, 

fig. 1.

Ithaca Peak granite

Mesozoic(?): Arizona.

B. E. Thomas, 1949, Econ. Geology, v. 44, no. 8, p. 667.

Itkillik glaciation

Pleistocene (Wisconsin) : Alaska.

R. L. Detterman in T. L. Pewe1 and others, 1953, U. S. Geol. Survey Circ. 289, p. 11, 13 

(table 1).

Ivanhoe glacial substage

Pleistocene (Gary) : Colorado.

R. L. Nelson, 1954, Jour. Geology, v. 62, no. 4, p. 331-333.

Iversen basalt

"Between late Cretaceous and Oligocene": California.

C. E. Weaver, 1944, Wash. [State] Univ. Pubs. In Geology, v. 6, no. 1, p. 4. (table), 

5, 17-18.

Ives breccia

Mississippian: Texas.

F. B. Plummer, 1939, in W. Tex. Geol. Soc. [Guidebook] Nov. 11-12, p. 16. 

V. E. Barnes, P. E. Cloud, Jr., and L. E. Warren, 1947, Geol. Soc. America Bull., v. 58, 

no. 2, p. 132-135.

Ixcoy limestone

Mesozoic: Guatemala.

Franz Termer, 1932, Gesell. Erdkunde Berlin Zeitschr. no. 7/8, p. 243-244, 247.

Izee group

Middle Jurassic: Oregon.

R. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 265.

Jabaco formation

Eocene, upper: Cuba.

P. J. Bermudez, 1937, Soc. Cubana Historia Nat. Mem., v. 11, no. 5, p. 325-336; 

1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 247-249.

Jack Creek formation

Upper Cretaceous: California.

N. L. Taliaferro, 1941, (ate.) Am. Assoc. Petroleum Geologists Bull., v. 25, no. 11, 

p. 2095 ; 1944, v. 28, no. 4, p. 474-484.

Jackpot limestone

Permian and/or Carboniferous: British Columbia, Canada. 

A. H. Lang, 1938, Canada Geol. Survey Paper 38-16, p. 14.

Jacksons Arm conglomerate member (of Giles Cove formation) 

Ordovician: Newfoundland, Canada. 

G. R. Heyl, 1937, Newfoundland GeoL Survey Bull. 8, p. 11.

Jaco sandstone (of Chicontepec formation) 

Eocene, lower: Tamaulipas, Mexico. 

Arnold Helm, 1940, Eclogae Geologicae Helvetiae, v. 33, no. 2, p. 330.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 181

Jacobs Chapel shale

Lower Mississippian: Indiana.

Guy Campbell, 1946, Geo. Soc. America Bull., v. 57, no. 9, p. 855-856.

Jagua formation

Upper Jurassic: Cuba.

E. H. Palmer, 1945, Jour. Geology, v. 53, no. 1, p. 5 (table 1), 6.

E. W. Imlay, 1952, Geol. Soc. America Bull., v. 63, no. 9, p. 969, Chart 8C.

Jaimanitas formation 

Pleistocene: Cuba. 

Jorge Brodermann, 1940, Soc. Cubana Ingenieros Rev., v. 34, no. 2, geol. map and

cross sections. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 306-307.

Jalama formation

Upper Cretaceous: California.

T. W. Dibblee, Jr., 1950, Calif. Dept. Nat. Res., Div. Mines Bull. 150, p. 23-24.

James limestone

Lower Cretaceous (Comanche series) : Subsurface in Arkansas, Louisiana,

and Texas. 

W. B. Weeks, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 8, p. 970.

Jameson shale member (of Markley sandstone) 

Eocene: California. 

C. E. Weaver, 1949, Geol. Soc. America Mem. 35, p. 17 (table 3), 62-64.

James River granite

Lower Ordovician(?) : Nova Scotia, Canada.

M. Y. Williams, 1914, Canada Geol. Survey Mem. 60, p. 101-105.

Janssen clay member (of Dakota formation) 

Upper Cretaceous: Kansas.

Norman Plummer, 1942, (abs.) Compass, v. 22, no. 4, p. 327.

Norman Plummer and J. F. Romary, 1942, Kans. State Geol. Survey Bull. 41, pt. 9, 

p. 319, 328, 336-340.

Jardine "basalt"

Age unknown: Wyoming.

A. D. Howard, 1937, Geol. Soc. America Special Paper 6, p. 16-17.

Jaronu limestone

Upper Cretaceous: Cuba.

E. H. Palmer, 1945, Jour. Geology, v. 53, no. 1, p. 13.

Jaruco formation

Oligocene, middle: Cuba.

Jorge Brodermann, 1940, Soc. Cubana Ingenieros Eev., v. 34, no. 2, geol. map and

cross sections. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 270.

Jasper Lake greenstone conglomerate or agglomerate 

Precainbrian (Knife Lake) : Minnesota. 

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583, 1593-1594.

Jasso formation

Upper Cretaceous (?) : Mexico and Distrito Federal, Mexico. 

E. M. Berbeyer, 1953, Congreso Cient. Mexicano Mem., tomo 4. table 6.
182 GEOLOGIC NAMES OF NORTH AMERICA

Jayville granite

Precambrian: New York.

A. P. Buddington, 1939, Geol. Soc. America Mem. 7, p. 84-85, 285, 286.

Jcaiche' beds

See Icaich£ formation.

Jealousy formation

Oligocene: St. Croix, Virgin Islands.

D. J. Cederstrom, 1941, Am. Jour. Sci., v. 239, no. 8, p. 557; 1950, U. S. Geol. Survey 

Water-Supply Paper 1067, p. 19-20.

Jeddito formation

Quaternary: Arizona.

J. T. Hack, 1941, Geog. Review, v. 31, no. 2, p. 262-263 ; 1942, Harvard Univ. Peabody 

Mus. Am. Archaeology and Ethnology Papers, v. 35, no. 1, p. 48-51.

Jeff conglomerate member (of Huelster formation) 

Tertiary: Texas. 

G. K. Eifler, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 4, p. 343-345, pi. 1.

Jeff Davis granite

Precambrian (?) : Georgia.

J. W. Clarke, 1952, Ga. Geol. Survey Bull. 59, p. 23-28.

Jeffreys limestone

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 24, 26.

Jenkins Branch chert bed (in Cotter dolomite) 

Lower Ordovician: Missouri.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 35.

Jenness Pond member (of Little ton formation) 

Lower Devonian: New Hampshire.

M. T. Heald, 1955, The geology of the Gilmanton quadrangle, New Hampshire : N. H. 

State Plan. Devel. Comm., p. 8-9, 10.

Jicotea member (of Jabaco formation) 

Eocene, upper: Cuba. 

Jorge Bordermann, 1940, Soc. Cubana Ingenieros Rev., v. 34, no. 2, geol. map and

cross sections. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 249-251.

Jimani formation

Pliocene: Dominican Republic.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 36.

Jim Ned shale member (of Belle Plains formation) 

Permian (Leonard? age) : Texas. 

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 60, 90.

Joaquin Ridge sandstone member (of Panoche formation) 

Upper Cretaceous: California.

P. P. Goudkoff, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, p. 989, 1006. 

A. S. Huey, 1948, Calif. Dept. Nat. Res., Div. Mines Bull. 140, p. 31.

Joe Lott tuff

Tertiary: Utah.

Eugene Callaghan, 1939, Am. Geophys. Union Trans. 20th Ann. Meeting, pt. 3, 

p. 449-450.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 183

Joes River beds

Eocene, upper: Barbados, British West Indies.

A. B. Thompson, 1925, Oil field exploration and development, v. 1, Oil field principles:

New York, N. Y., D. Van Nostrand Co., p. 395. 

Alferd Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1572-1577,

1581.

Joes Valley member (of North Horn formation) 

Paleocene: Utah.

C. L. Gazin, 1941, U. S. Natl. Mus. Proc., v. 91, no. 3121, p. 6.

John Brown formation

Middle or Upper Jurassic: British Columbia, Canada.

R. B. Sommers, 1955, British Columbia Bur. Mines Ann. Bept. 1954, p. A89-A90.

Johnson Mill graphite schist 

Age not stated: Virginia. 

W. A. Nelson, 1949, (abs.) Va. Acad. Sci. Proc. 1948-1949, p. 140.

Johnson Peak tuff breccia

Miocene, middle, or older: California.

J. S. Shelton, 1955, Geol. Soc. America Bull., v. 66, no. 1, p. 65, pi. 1.

Johnston Hill glaciation

Pleistocene (pre-Wisconsin): Alaska.

E. H. Muller in T. L. Pew6 and others, 19i53, U. S. Geol. Survey Cire. 289, 

p. 2, 13 (table 1).

Jojoba formation

Precambrian (Algonkian): Sonora, Mexico.

A. A. Stoyanow, 1942, Geol. Soc. America Bull., v. 53, no. 9, p. 1264.

Joli Fou formation

Lower or Upper Cretaceous: Alberta, Canada.

E. T. D. Wickenden, 1949, Canada Geol. Survey Paper 49-15, p. 16-21.

Jonas Creek formation

Precambrian and (?) Lower Cambrian: Alberta, Canada.

R. D. Hughes, 1955, Alberta Soc. Petroleum Geologists Guidebook 5th Ann. Field 

Conf., p. 74-78.

Jones Creek formation

Upper Silurian: New Brunswick, Canada.

G. S. Mackenzie, 1951, Canada Geol. Survey Paper (Prelim. Map) 51-15.

Jones Ranch beds

Pleistocene: Kansas.

H. T. U. Smith, 1940, Kans. State Geol. Survey Bull. 34, p. 110-111.

Jonestown beds or formation 

Ordovician: Pennsylvania. 

Bradford Willard, 1939, Pa. Acad. Sci. Proc., v. 13, p. 129,131.

Jordan Narrows unit

Oligoeene(?) to Miocene, middle: Utah.

L. W. Slentz, 1955, Utah Geol. Soc. Guidebook 10, p. 24-26.

Jornada limestone

Upper Ordovician: New Mexico.

V. C. Kelley, 1951, Am. Assoe. Petroleum Geologists Bull., v. 35, no. 10, 

p. 2201 (table).
184 GEOLOGIC NAMES OP NORTH AMERICA

Jos6 shale member (of Yegua formation)

Eocene (Claiborne) : Texas, and Tamaulipas, Mexico.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists .Bull., v. 26, no. 2, p. 259 

(fig. 2), 265.

Jose Creek member (of McRae formation)

Upper Cretaceous and Tertiary, lower: New Mexico. 

H. P. Bushnell, 1955, Compass, v. 33, no. 1, p. 12-14.

Joserita member (of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11-12, 15.

Joshua schist

Paleozoic (?) : Virginia.

W. R. Brown, 1951, (abs.) Geol. Soc. America Bull., v. 62, no. 12, pt. 2, p. 1547; 

1953, Ky. Geol. Survey, ser. 9, Special Pub. 1, [p. 9] (fig. 1).

Joshua schist

Pre-Triassic: Massachusetts.

M. E. Willard, 1951, Bedrock geology of the Mount Toby quadrangle, Massachusetts: 

U. S. Geol. Survey Geol. Quadrangle Map [GQ 8].

Joshua submember (of Otisco member of Ludlowville formation) 

Middle Devonian: New York. 

W. A. Oliver, Jr., 1951, Am. Jour. Sci., v. 249, no. 10, p. 716-717.

Josselin gneiss

Precambrian (post-Keewatin): Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Kept. 24, p. 11.

Joyita sandstone member (of Yeso formation) 

Permian: New Mexico. 

C. B. Needham and R. L. Bates, 1943, Geol. Soc. America Bull., v. 54, no. 11, p. 1660.

Juab limestone

Lower Ordovician (Chazyan) : Utah.

L. F. Hintze, 1951, Utah Geol. Mineralog. Survey Bull. 39, p. 17-18.

Juana Lopez sandstone member (of Carlile shale) 

Upper Cretaceous: New Mexico and Colorado. 

C. H. Rankin, 1944, N. Mex. State Bur. Mines Min. Res. Bull. 20, p. 7, 12.

Jubilee phase (of Amargosa chaos) 

Post-Miocene(?) : California.

L. F. Nobel, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt, 2. p. 1936; 1941, 

v. 52, no. 7, p. 972-977.

Judkins formation

Quaternary: Texas.

R. M. Huffington and C. C. Albritton, Jr. 1941, Am. Jour. Sci., v. 289, no. 5, p. 327-329.

Judson member (of St. Lawrence formation) 

Upper Cambrian (St. Croixian): Minnesota.

C. R. Stauffer, G. M. Schwartz, and G. A. Thiel, 1938, (abs.) Geol. Soc. America Bull., 

v. 49, no. 12, pt. 2, p. 1902.

Julianehaab granite

Precambrian (upper Algonkian?): Southwest Greenland. 

N, V. Ussing, 1911, Meddel. om Gr0nland, hef te 38, p. 10-13.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 185

Julies Harbour group

Middle Ordovician(?) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 9-10.

Jumonville sandstone

Upper Devonian (Conewango): Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Kept. 126, p. 11 (footnote).

Jumpingpound member (of Alberta shale) 

Upper Cretaceous: Alberta, Canada. 

G. S. Hume, 1938, Canada Geol. Survey Paper 38-22, p. 11.

Juncal formation

Eocene, middle: California.

B. M. Page, J. G. Marks, and G. W. Walker, 1951, Am. Assoc. Petroleum Geologists 

Bull., v. 35, no. 8, p. 1749-1756.

Junction City facies (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, GeoL Soc. America Special Paper 22, p. 115-117.

Junction Creek sandstone 

Upper Jurassic: Colorado.

M. I. Goldman and A. C. Spencer, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, 

no. 9, p. 1750-1751, fig. 2.

June Lake basalt

Pleistocene: California.

W. C. Putman, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1939.

Jungle Ridge limestone member (of Fort Creek formation)

Upper Devonian: Northwest Territories (Mackenzie) and Yukon, Canada. 

G. S. Hume and T. A. Link, 1945, Canada Geol. Survey Paper 45-16, p. 30.

Juniperan stage

Eocene, early: California.

V. S. Mallory, 1953, (abs.) Jour. Paleontology, v. 27, no. 6, p. 903.

Juniperian stage

See Juniperan stage. 

Junipero sandstone

Eocene: California.

R. R. Thorup, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1958; 

1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 463-465.

Jupiter shales

Precambrian (Chuaran) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 112.

Jutiapa rhyolitic tuffs and sediments 

Pliocene (?) : Honduras. 

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 29.

Kaaterskillian series

Devonian (Devonic): Missouri.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 75, no. 4, p. 311.

Kaau mud flow

Quaternary: Hawaiian Islands (Oahu).

H. T. Stearns, 1940, Hawaii Div. Hydrography Bull. 5, p. 51-52.
186 GEOLOGIC NAMES OF NORTH AMERICA

Kagman andesite

See Hagman formation.

Kahochella formation

Precambrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 377A.

Eahuku volcanic series

Pleistocene: Hawaiian Islands (Hawaii).

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, p. 68-71.

Kaipokok gneiss

Precambrian: Newfoundland (Labrador), Canada. 

E. H. Kranck, 1953, Canada Geol. Survey Bull. 26, p. 37.

Kakarsuak porphyrite

Devonian (?): Southwest Greenland.

N. V. Ussing, 1911, 'Meddel. om Gr0nland, hefte 38, p. 101. 

Ealaupapa basalt

Pleistocene (?): Hawaiian Islands (Molokai).

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 73, fig. 18.

Kameset (Gamusetsu) agglomerate

Eocene: Caroline Island (Babelthaup).

Risaburo Tayama, 1939, Brief report on the geology and ore resources of Babelthaup 

Island (Palau Island proper) : Tropical Industry Inst., Palau South Sea Islands, 

Bull. 3 [Engish translation in library of U. S. Geol. Survey, p. 15, 18] ; 1952, 

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 64, table 4 

[English translation in library of U. S. Geol. Survey, p. 75-76].

Kanab Canyon member (of Muav formation) 

Lower and/or Middle Cambrian: Arizona. 

E, D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 102-105.

Kanapou volcanic series

Pliocene (?): Hawaiian Islands (Kahoolawe).

H, T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 63, fig. 16.

Kanawha volcanic zone (of Eagleford formation) 

Cretaceous: Texas. 

R. T. Hazzard, 1939, Shreveport Geol. Soc. Guidebook 14th Ann. Field Trip, p. 138-140.

Kangamiut diabases

Precambrian: Southwest Greenland.

Hans Ramberg, 1948, Meddel. Dansk Geol. Foren., bind 11, hefte 3, p. 315-319..

Kangamiut gneiss complex

Precambrian: Southwest Greenland.

Hans Ramberg, 1948, Meddel. Dansk GeoL Foren., bind 11, hefte 3, p. 313, 315-319, 

fig. 1.

Kangerdlugssuaq complex

Tertiary: Southeast Greenland.

L. R. Wager and W. A. Deer in L. R. Wager, 1937, Geog. Jour. v. 90, no, 5, p. 416.

L. R. Wager, 1947, Meddel. om Gr0nland, bind 134, nr. 5, p. 41-44, 46, pi. 6.

Kangerdlugsuak series

Upper Cretaceous (?): Southeast Greenland.

L. R. Wager, 1934, Meddel. om Gr0nland, bind 105, nr. 2, p. 25-27.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 187

Kaniapiskau series

Precambrian (Proterozoic): Newfoundland (Labrador), Canada. 

Carl Faessler, 1948, Le Naturaliste Canadien, v. 75, nos. 1-2, p. 16-17.

Kanosh shale - . 

Lower Ordovician (Chazyan): Utah and Nevada. 

L. F. Hintze, 1951, Utah Geol. Mineralog. Survey Bull. 39, p. 18-19.

Kapaula basaltic andesite

Pleistocene (?) : Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

BuU. 7, p. 230, 244-246.

Kap Biot formation

See Cape Biot formation.

Kap Bull series <

Devonian: Northeast Greenland.

Heinrich Butler, 1935, Naturf. Gesell, Schaffhausen, Mitt., Heft 12, p. 26-29, fig. 4.

Kap Calhoun formation 

See Cape Calhoun series.

Kap Clay formation

See Cape Clay formation.

Kap Dalton series

See Cape Dalton formation.

Kap Bdvard Holm complex

See Cape Edward Holm complex.

Kap Fletcher series

See Cape Fletcher series.

Kap Franklin conglomerate

Devonian: Northeast Greenland.

Wolf Maync, 1940, Meddel. em Gr0nland, bind 114, nr. 5, p. 10, 11; 1949, bind 114, 

nr. 2, p. 17, 53, 61.

Kap Franklin-Vildtal granite ' 

Middle Devonian: Northeast Greenland. 

Heinrich Butler, 1954, Meddel. om Gr0nland, bind 116, nr. 7, p. 69-71.

Kap Frederick VII formation

See Cape Frederick VII formation.

Kap Graah series

See Cape Graah formation.

Kap Gustav Holm series

Upper Cretaceous: Southeast Greenland.

L. B. Wager, 1934, Meddel. om Gr^nland, bind 105, nr. 2, p. 22-25.

Kap Holbaek sandstone

Cambrian or Ordovician (pre-upper Canadian, post-upper Precambrian):

North Greenland. 

P. J. Adams and J. W. Cowie, 1953, Meddel. om Gr0nland, bind 111, nr. 7, p. 9, 12.

Kap Kent formation

See Cape Kent formation.

426779 57 13
188 GEOLOGIC NAMES OF NORTH AMERICA

Kap Kolthoff series

Devonian: Northeast Greenland.

Heinrich Butler, 1935, Naturf. Gesell. Schaffhausen, Mitt., Heft 12, p. 26-29, fig. 4.

Kap Oswald formation

See Cape Oswald formation.

Kap Parry complex

See Cape Parry alkaline complex.

Kap Schuchert formation

See Cape Schuchert formation.

Kap Simpson complex

Tertiary: Northeast Greenland.

H. B. Schaub in Wolf Maync and others, 1938, Meddel. om Gr0nland, bind 114, nr. 1, 

p. 32, 40-44, fig. 1.

Kap Stosch formation

See Cape Stosch formation.

Kap Tyson formation

See Cape Tyson formation.

Kapukapu tuff

[Quaternary]: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1938, Hawaiian Volcano Observatory 3d Special Bept., p. 36.

Kapur limestone

Oligocene: Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1947, Cushman Lab. Foram. Research Special

Pub. 22, p. 1. 

B. M. Stainforth, 1948, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 1312.

Kapur Bidge limestone. 

See Kapur limestone.

Kap Weber formation

See Cape Weber formation.

Kap Webster formation

See Cape Webster formation.

Kap Wood formation

See Cape Wood formation.

Karamat formation

Oligoeene: Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1947, Cushman Lab. Foram. Research Special

Pub. 22, p. 1. 

H. G. Kugler, 1950, AsociaciCn Venezolano de Geologla, Mineria y Petr61eo Bol.,

tomo 2, no. 1, p. 48 (correlation chart), 70.

Kashabowie series

Precambrian: Ontario, Canada.

H. S. Perdue, 1938, Jour. Geology, v. 46, no. 6, p. 844, 845 (flg. 1).

Kaskaskia sequence

Devonian (Chautauquan) to Mississippian (Osagean): Central and western

United States. 

L. L. Sloss, W. C. Krumbein, and E. C. Dapples in C. R. Longwell, chm., 1949, Geol.

Soc. America Mem. 39, p. 110-111, 115.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 189

Kaskawulsh group

Carboniferous or Permian: Yukon, Canada.

E. D. Kindle, 1953, Canada Geol. Survey Mem. 268, p. 29-31.

Kassler sandstone member (of South Platte formation) 

Lower Cretaceous: Colorado. 

K. M. Waag , 1955, U. S. Geol. Survey Prof. Paper 274-B, p. 31.

Kastasakau complex

Precambrian: Quebec, Canada.

J. M. Neilson, 1950, Quebec Dept. Mines Prelim. Kept. 238, p. 4.

Kasuteshio limestone

See Kasutesyo limestone.

Kasutesyo limestone

Oligocene [Aquitanian]: Mariana Islands (Tinian).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands : Geol. Soc. 

Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in library 

of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan Hydrog. Office 

Bull., v. 11, p. 52, table 4 [English translation in library of U. S. Geol. Survey, 

p. 62].

Kate Peak formation

Miocene, upper, or Pliocene: Nevada.

V. P. Gianella, 1936, Nev. Univ. Bull., v. 30, no. 9, p. 68-73.

Katherine group

Cambrian and/or older: Northwest Territories (Mackenzie) and Yukon,

Canada.

J. S. Stewart, 1944, Canadian Inst. Mining and Metallurgy Trans., v. 47, p. 163. 

G. S. Hume and T. A. Link, 1945, Canada Geol. Survey Paper 45-16, p. 7.

Kau volcanic series

Pleistocene, upper (?) and Recent: Hawaiian Islands (Hawaii).

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, p. 76-78.

Kauai lavas

Age not stated: Hawaiian Islands (Kauai).

N. E. A. Hinds, 1930, Bernice P. Bishop Mus. Bull. 71, p. 56-58.

Kauffman member (of Mercersburg formation)

Middle Ordovician (Trentonian) : Pennsylvania.

L. C. Craig, 1949, Geol. Soc. America Bull., v. 60, no. 4, p. 715 (fig. 1), 734-738.

Kaumajet volcanic series

Precambrian: Newfoundland (Labrador), Canada. 

N. E. Odell, 1938, Am. Geog. Soc. Special Pub. 22, p. 202.

Eaupo mud flow

Pleistocene: Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 107-108.

Kaweah series

Triassic(?) : California.

Cordell Durrell, 1940, Calif. Univ. Dept. Geol. Sci. Bull., v. 25, no. 1, p. 13, 116.

Kawvian series (epoch)

Upper Pennsylvanian: North America.

R. C. Moore and M. L. Thompson, 1949, Am. Assoc: Petroleum Geologists Bull., v. 33, 

no. 3, p. 288-289, 297-300.
190 GEOLOGIC NAMES OF NORTH AMEKICA

Kayrand quartz gabbro

Precambrian (Archean): Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Rept. 255, map; Prelim. Kept. 257, 

p. 2, 7, map.

Kaycee formation

Recent: Wyoming.

L. B. Leopold and J. P. Miller, 1954, U. S. Geol. Survey Water-Supply Paper 1261, 

p. 10-11.

Keanae basalt

Pleistocene(?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 95, 96.

Keanakakoi formation

Recent: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1938, Hawaiian Volcano Observatory 3d Special Rejrt. p. 37.92-102. 

Kearny formation

Pennsylvanian (Morrow) : Kansas (subsurface).

M. L. Thompson, 1944, Kans. State Geol. Survey Bull. 52, pt. 7, p. 414-417.

Kedahda formation

Permian: British Columbia, Canada.

K. D. Watson and W. H. Matthews, 1944, British Columbia Dept. Mines Bull. 19, p. 15.

Keel limestone member (of Chimneyhill formation). 

Lower Silurian: Oklahoma.

R. A. Maxwell, 1936, Northwestern Univ. Summaries of Doctoral Dissert., v. 4, 

p. 132, 133.

Keepings gneiss

Pre-Devonian: Newfoundland, Canada.

J. R. Cooper, 1954, Canada Geol. Survey Mem. 27'6, p. 8-9.

Kee Scarp limestone member (of Fort Creek formation)

Upper Devonian: Northwest Territories (Mackenzie) and Yukon, Canada. 

G. S. Hume and T. A. Link, 1945, Canada Geol. Survey Paper 45-16, p. 30.

Keg River formation

Devonian: Alberta, Canada (subsurface).

J. Law, 1955, Alberta Soc. Petroleum Geologists Jour., v. 3, no. 6, p. 83.

Keith Knob facies (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 112-114.

Kekekabic tuffs, agglomerates, slates, and andesite porphyry 

Precambrian (Knife Lake) : Minnesota. 

J. W. Gruner, 1941, Geol. Soc. America Bull., v. 52, no. 10, p. 1583, 1606-1608.

Kekekabic Lake tuffs, agglomerates, slates, and andesite porphyry 

See Kekekabic tuffs, agglomerates, slates, and andesite porphyry.

Keller group

Pennsylvanian (Virgil) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 69-72.

Kellogg shale

Eocene, upper: California.

B. L. Clark and A. iS. Campbell, 1942, Geol. Soc. America Special Paper 39, p. 5-9.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-19 5 5 191

Kelly formation

Pennsylvania!!: Utah.

H. J. Bissell, 1936, Iowa Acad. Sci. Proc., v. 43, p. 239-241.

Kelso shale

Lower Cambrian: California.

J. C. Hazzarfl, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 241.

Kelvin Glen group

Middle Cambrian: Nova Scotia, Canada.

L. J. Weeks, 1954, Canada Geol. Survey Mem. 277, p. 53-55.

Kenilworth member (of Blackhawk formation) 

Upper Cretaceous: Utah. 

E. G. Young, 1955, Geol. Soc. America Bull., v. 66, no. 2, p. 183, 184-185.

Kennebec volcanics

Precambrian: Ontario, Canada.

W. D. Harding, 1944. Ontario Dept. Mines Ann. Kept., v. 51, pt. 4. D. 58.

Kennebecasis formation or series

Lower Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. EDowell, 1937, Geol. Soc. America Special Paper 5, p. 107-108.

Kennebecasis granite

Pre-Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 39.

Kenoran volcanics

Precambrian: Ontario, Canada.

F. J. Pettijohn, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 187, 190.

Kensington granite-gneiss 

Age unknown: Maryland. 

Ernst Cloos in 'C. W. Cooke and Ernst Cloos, 1951, Geologic map of Prince Georges

County and the District of Columbia (1: 62,500) : Md. State Dept. Geology, Mines,

and Water Res.

Kensington syenite

Precambrian: Quebec, Canada.

Edgar Aubert de la Rtte, 1953, Quebec Dept. Mines Geol. Bept. 50, p. 19-21.

Kenwood River granite

Precambrian: Saskatchewan, Canada.

A. R. Byers, 1949, Saskatchewan Geol. Survey (Precambrian Geology Ser.) Kept. 1, 

p. 14.

Kenyon member (of Mt. Simon formation) 

Upper Cambrian: Illinois (subsurface). 

J. S. Templetan, Jr., 1950, 111. Acad. Sci. Trans., v. 43, p. 154-155.

Kerr Ranch schist

Pre-Devonian: California.

G. A. Manning and B. A. Ogle, 1950, Calif. Dept. Nat. Res., Div. Mines Bull. 148, 

p. 13-18, pi. 1.

Ketilidian period

Precambrian: Southwest Greenland.

C. E. Wegmann, 1938, Meddel. om Gr0nland, bind 113, nr. 2, p. 13.
192 GEOLOGIC NAMES OF NORTH AMEKICA

Kettle Point black shale

Upper Devonian (Senecan-Chautauquan) : Ontario, Canada. 

W. E. Logan, 1863, Canada Geol. Survey Progress Kept, to 1863, p. 387. 

G. A. Cooper and others, 1942, Geol. Soc. America Bull., v. 53, no. 12, pt. 1, p. 1769, 

Chart 4.

Kewagama group

Precambrian: Quebec, Canada.

H. C. Gunning and J. W. Ambrose, 1937, Canadian Inst. Mining and Metallurgy Trans., 

v. 40, p. 344.

Keweenaw Point volcanic series

Precambrian (middle Keweenawan) : Minnesota.

R. M. Grogan, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, p. 1198.

Kickapoo Creek group

Pennsylvanian (Lampasas) : Texas.

M. G. Cheney, 1947, Jour. Geology, v. 55, no. 3, p. 209-210.

Eiekie volcanic series

Pleistocene: Hawaiian Islands (Niihau).

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 91.

Kii Point limestone

[Quaternary]: Hawaiian Islands (Oahu).

C. K. Wentworth and J. E. Hoffmeister, 1939, Geol. Soc. America Bull., v. 50, no. 10, 

p. 1560-1561.

Kilbeck granite gneiss

Precambrian (Archean) : California.

J. C. Hazzard and E. P. Dosch, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 309.

Eilea volcanics

Pleistocene (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 158, 181.

Killarnean granites

Precambrian: Ontario, Canada.

T. T. Quirke, 1924, Pan-Am. Geologist, v. 42, no. 4, p. 308.

W. H. CoUins, 1937, Geol. Soc. America Bull., v. 48, no. 10, p. 1445-1446, 1456.

Killbuck shale facies (of Cuyahoga formation) 

Mississipian: Ohio. 

F. T. Holden, 1941, 111. Acad. Sci. Trans., v. 34, no. 2, p. 172.

Killigrews Brook formation

Middle Cambrian: Newfoundland, Canada. 

L. J. Weeks, 1955, Canada Geol. Survey Map 1043A.

Killingworth leuco-tonalite

Mid-Carboniferous: Connecticut.

W. G. Foye, 1949, Conn. Geol. Nat. History Survey Bull. 74, p. 53.

Kimball formation

Pliocene: Nebraska.

A. L. Lugn, 1938, Am. Jour. Sci., 5th ser., v. 36, no. 213, p. 224, 227; 1939, Geol. 

Soc. America Bull., v. 50, no. 8, p. 1262-1263.

Kimball formation

Precambrian or Lower Cambrian: British Columbia, Canada. 

A. H. Lang, 1938, Canada Geol. Survey Paper 38-16, p. 13.
GEOLOGIC NAMES OP NORTH AMERICA INTRODUCED IN 1936-1955 193

Kindblade formation

Lower Ordovician (Arbuckle group) : Oklahoma.

C. E. Decker, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1320, table 1.

Kindle formation

Mississippian: British Columbia, Canada.

L. R. Laudon and B. J. Chronic, Jr., 1949, Am. Assoc. Petroleum Geologists Bull., 

v. 33, no. 2, p. 193, 210.

King City formation

Pliocene: California.

B. L. Clark, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1956-1957.

King Creek marl member (of Chappel formation) 

Mississippian: Texas. 

F. B. Plummer, 1950, Tex. Univ. Bur. Econ. Geology Pub. 4329, p. 26-27.

Kingdom formation

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 12.

King Edward formation

Precambrian or Paleozoic: British Columbia, Canada. 

A. G. Jones, 1948, Canada Geol. Survey Paper 48-4, p. 2.

Kingman sandstone member (of Harper sandstone) 

Permian: Kansas and Oklahoma.

G. H. Norton, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, p. 1557; 

1939, v. 23, no. 12, p. 1785-1786.

Kingman series

Tertiary: Arizona.

B. E. Thomas, 1949, Econ. Geology, v. 44, no. 8, p. 667-669.

King Salmon group

Upper Triassic: British Columbia, Canada.

F. A. Kerr, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-30; 1948, Mem. 248, 

p. 20 (table), 24-25, geol. map.

Kingshill marl

Oligocene and Miocene: St. Croix, Virgin Islands.

J. F. Kemp, 1926, New York Acad. Sci., Sci. Survey of Porto Rico and the Virgin 

Islands, v. 4, pt. 1, p. 49 (reprinted? from J. F. Kemp, 1923, Report to H. H. Hongh, 

Captain, U. S. N., Governor, Virgin Islands. Printed at the Naval Station, St. 

Thomas [not seen]).

D. J. Cederstrom, 1941, Am. Jour. Sci., v. 239, no. 8, p. 556-557.

Kingsport formation or dolomite

Lower Ordovician: Tennessee and Virginia.

John Rodgers, 1943, Geologic map of Copper Ridge district, Hancock and Grainger 

Counties, Tenn. (1: 24,000) : U. S. Geol. Survey Strategic Minerals Inv. Prelim. Map.

C. R. L. Oder and H. W. Miller, 1945, Am. Inst. Min. Metall. Engineers (Mining Technology, v. 9, no. 3) Tech. Pub. 1818, p. 1, 2 (table 1).

Kingston Peak formation

Precambrian (Pahrump series): California.

D. F. Hewett, 1940, Washington Acad. Sci. Jour., v. 30, no. 6. p. 240.

Kingston Range monzonite porphyry

Upper Cretaceous or Tertiary, lower: California.

D. F. Hewett, 1948, Calif. Dept. Nat. Res., Div. Mines Bull. 129, pt. M, p. 199-200.
1194' GEOLOGIC NAMES OF NORTH AME'RICA

Kingsvale group

Lower Cretaceous (Albian) : British Columbia, Canada.

H. M. A. Eice, 1947, Canada Geol. Survey Mem. 243, p. 25-27. 

Kings Valley silt stone member (of Siletz River volcanic series)

Eocene: Oregon.

H. E. Yokes, D. A. Myers, and Linn Hoover, 1954, U. S. Geol. Survey Oil and Gas Inv. 

Map OM 150.

Kinnison shale member (of Cherokee formation) 

Pennsylvanian (Desmoinesian) : Oklahoma.

W. B. Howe, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 9, p. 2087, 2092, 

2093.

Kinojevis group

Precambrian (Archean) : Quebec, Canada.

G. W. H. Norman, 1944, Canada Geol. Survey Paper 44-9, p. 2 (Prelim. Map 44-9A).

Kipahulu formation

Pleistocene(?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 91-94.

Kippens formation

Cambrian: Newfoundland, Canada.

T. N. Walthier, 1949, Newfoundland Geol. Survey Bull. 35, pt. 1, p. 70-73.

Kirby Lake dolomite

, Permian (Leonard) : Texas.

Gayle Scott and others, 1941, W. Tex. Geol. Soc. [Guidebook] Spring Field Trip, May

10-11, correction sheet.

V. C. Perini, Jr., and J. R. Day, 1946, Abilene Geol. Soc. [Guidebook] November Field 

Trip, p. 5, 26.

Kirkman limestone

Permian: Utah.

A. A. Baker and J. S. Williams, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, 

no. 4, p. 625-626.

Kirschberg evaporite (in Edwards limestone) 

Cretaceous: Texas. 

V. E. Barnes, 1946, Tex. Univ. Bur. Econ. Geology Pub. 4301, p. 40-43 [1944].

Kitchigama granite

Precambrian (post-Keewatin) : Quebec, Canada.

W. W. Longley, 1943, Quebec Dept. Mines Geol. Kept. 12, p. 19-20.

Kite group

Lower Devonian: Oklahoma.

R. A. Maxwell, 1936, Northwestern Univ. Summaries of Doctoral Dissert., v. 4, 

p. 132, 134.

Kline member (of Nesson formation)

Jurassic: Subsurface in North Dakota and Montana, and Manitoba, Canada. 

J. W. Nordquist, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., 

p. 104, 105-106, fig. 2.

Klitdal formation

Permo-Triassic(?) : East Greenland.

Alfred Rosenkrantz in Lauge Koch, 1929, Meddel. om Grjtoland, bind 73, afd. 2, nr. 1, 

p. 140-142.
GEOLOGIC NAMES OF NORTH AMEEICA INTRODUCED IN 1936-1955 195

K10f11 formation

Upper Jurassic (Oxfordian-Kimmeridgian) : Northeast Greenland. 

Lauge Koch, 1929, Meddel. om Gr^nland, bind 73, afd. 2, nr. 2, p. 254-255.

Kluane schists

Cambrian (?): Yukon, Canada.

E. G. McConnell, 1905, Canada Geol. Survey Summary Kept. 1904, p. 4-6, map 894.

Kluane silt

Recent: Yukon, Canada.

C. S. Denny, 1952, Geol. Soc. America Bull., v. 63, no. 9, p. 920, table 4.

Kneehills tuff

Upper Cretaceous: Alberta, Canada.

J. O. G. Sanderson, 1931, Royal Soc. Canada Trans., ser. 3, v. 25, sec. 4, p. <MMJ6.

Kneeling Nun rhyolite tuff

Tertiary, upper: New Mexico.

F. J. Kuellmer and others, 1953, in N. Mex Geol. Soc. Guidebook 4th Field Conf., p. 42

(map), 50 (map), 57. 

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Ees. Bull. 37, p. 39, 44-45.

Knickerbocker andesite

Pliocene, upper, or Pleistocene: Nevada.

V. P. Gianella, 1936, Nev. Univ. Bull., v. 30, no. 9, p. 73-76.

Knifeton cyclothem or formation

PennsyIranian (Des Moines) : Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 

22 ; 1938, Kans. Acad. Sci. Trans., v. 41, p. 193,196.

Knip beds

Cretaceous (?): Curagao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologie en geohydrologie van het Eiland Curasao: Delft, 

J. Waltman, Jr., p. 3-5,15-22, 53-54.

Knob Hill andesite

Eocene: Washington.

L. B. Wright, 1947, Am. Inst. Mining and Metall. Engineers Tech. Pub. 2197, p. 5.

Knob Lake group

Precambrian (Proterozoic): Quebec and Newfoundland (Labrador), Canada. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 7.

Knoxville member (of Pascagoula formation) 

Miocene: Mississippi.

1940, Miss. Geol. Soc. [Guidebook 1] Field Trip, Feb. 10-11, p. 4.

G. F. Brown and W. F. Guyton, 1943, Miss. State Geol. Survey Bull. 56, p. 22, 26, 31.

Knudshoved beds

Upper Cretaceous (Senonian): Northeast Greenland.

Wolf Maync, 1949, Meddel. om Gr^nland, bind 133, nr. 3, p. 144, 211-217, 281.

Kobau group

Carboniferous (?) : British Columbia, Canada. 

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Koch Fjaeld formation

Upper Jurassic (Kimmeridgian): East Greenland.

Alfred Rosenkrantz in Lauge Koch, 1929, Meddel. om GrfSnland, bind 73, afd. 2, nr. 1, 

p. 147.
196 GEOLOGIC NAMES OF NORTH AMERICA

Koehler limestone

Middle Devonian: Michigan.

W. A. Kelly and G. W. Smith, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 3, 

p. 454-455.

Kogosukruk tongue (of Prince Creek formation) 

Upper Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 166-167.

Kokernot formation 

Quaternary: Texas.

C. C. Albritton, Jr., and Kirk Bryan, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, 

pt. 2, p. 1863 ; 1939, v. 50, no. 9, p. 1441-1442.

Koksoak series

Precambrian: Quebec, Canada.

M. E. Wilson, 1939, Geologic der Erde, North America, v. 1, p. 279.

Kolekole volcanics

Pleistocene (?): Hawaiian Islands (Oahu).

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 77.

Koloa volcanic series

Pleistocene and Recent: Hawaiian Islands (Kauai).

N. E. A. Hinds, 1930, Bernice P. Bishop Mas. Bull. 71, p. 58-59. 

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 85, 87-89.

Kolosh member (of Kialaguik formation) 

Lower Jurassic: Alaska. 

L. B. Kellum, 194§, N. Y. Acad. Sci. Trans., ser. 2, v. 7, no. 8, p. 203.

Kome beds

Lower Cretaceous (Urgouian) : Northwest Greenland.

Oswald Heer, 1883, Meddel. om Gr0nland, hefte 5, pt. 3, p. 83, 84-92; pt 5, p. 226-227. 

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 258-262.

Kona tuff formation

Pleistocene, upper (?), and Recent: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1938, Hawaiian Volcano Observatory 3d Special Kept., p. 90-91, 172.

Konocti volcanics

Quaternary: California.

J. C. Brice, 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 166, p. 12, pi. 7.

Kosk member (of Modin formation) 

Upper Triassic: California. 

A. F. Sanborn, [1953], Stanford Univ. Abs. Dissert., v. 27, p. 436.

Kotaneelee formation

Upper Cretaceous: British Columbia, Yukon, and Northwest Territories

(Mackenzie), Canada. 

C. 0. Hage, 1945, Canada Geol. Survey Paper 45-22, p. 21-23.

Kramer Lake beds (in Ricardo formation) 

Miocene, upper: California. 

H. S. Gale, 1946, Calif. Jour. Mines and Geology, v. 42, no. 4, p. 326.

Krebs group

Pennsylvanian (Des Moines age) : Oklahoma.

M. C. Oakes,. 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 6, p. 1523-1524, 

1525-1526.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 197

Krist fragmental [unit]

Precambrian: Ontario Canada.

B. S. W. Buflam, 1948, in Structural geology of Canadian ore deposits: Canadian

Inst. Mining and Metallurgy, p. 458. 

E. S. Moore, 1953, Royal Soc. Canada Trans., ser. 3, v. 47, sec. 4, p. 41, 46.

Kfi2 lens (in Hueco formation)

Permian (Wolfcampian) : Texas.

C. O. Dunbar, 1953, Am. Jour. Sci. v. 251, no. 11, p. 802-804, figs. 1, 2.

Kruger Mountain malignite 

Mesozoic: Washington. 

A. C. Waters and Konrad Krauskopf, 1941, Geol. Soc. America Bull., v. 52, no. 9, pi. 1.

Kuhiwa basaltic andesite

Pleistocene (?) : Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 230, 249-251.

Kuhn beds

Upper Jurassic (upper Kimineridgian) : Northeast Greenland.

Wolf Maync, 1947, Meddel. om Gr0nland, bind 132, nr. 2, p. 38-43, 119, 131-132, pi. 6.

Kuhnpas facies

Lower Cretaceous (Valanginian) : Northeast Greenland.

Andreas Viscner, 1943, Meddel. om Gr0nland, bind 133, nr. 1, p. 87-91, pi. 2.

Kula volcanic series

Tertiary, upper (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hyrography 

Bull. 7, p. 65, 74-90.

Kungnat granite

Precambrian: Southwest Greenland.

C. B. Wegmann, 1938, Meddel. om Gr0nland, bind 113, nr. 2, p. 94-98.

Kure sandstone

Pleistocene: North Carolina.

B. W. Wells, 1944, Elisha Mitchell Sci. Soc. Jour., v. 60, no. 2, p. 129-130.

Kuskokwim group

Lower (?) and Upper Cretaceous: Alaska.

W. M. Cady and others, 1955, U. S. Geol. Survey Prof. Paper 268, p. 35-47.

Kwaguntan series

Precambrian: Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 109.

Laberdie cyclothem (including Laberdie limestone)

Pennsylvanian (Des Moines) : Kansas, Missouri, Nebraska, and Oklahoma. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 320-321; 1945, Bull. 

58, p. 34-35, 63, 65.

La Boca marine member (of Panama formation) 

Miocene, lower: Panama Canal Zone. 

IT. F. Thomson], 1943, Panama Canal, Special Eng. Div., 3d Locks Proj., pt. 2, chap.

3, p. 16-17. 

W. P. Woodring and T. F. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull.,

v. 33, no. 2, p. 241-242.
198 GEOLOGIC NAMES OF NORTH AME'RICA

Labrador series

Lower Cambrian: Newfoundland.

Charles Schuchert and C. O. Dunbar, 1934, Geol. Soc. America Mem. 1, p. 16, 17-20.

Labradoran system 

Labradorian

See Labrador series .

La Brea formation

Miocene, upper: Trinidad, British West Indies.

E. H. Cunningham-Craig, 1906, Trinidad Legislative Council Paper no. 30 of 1906,

p. 4 ; 1907, Paper no. 60 of 1907, p. 9. 

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull.,

v. 20, no. 59, p. 55.

Labyrinth Lake granite

Precainbrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 129.

La Caja formation

Upper Jurassic: Coahuila and Zacatecas, Mexico.

R. W. Imlay, 1938, Geol. Soc. America Bull., v. 49, no. 11, p. 1659-1662.

La Casita formation

Upper Jurassic: Coahuila, Mexico.

R. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1110.

Lacey member (of Mt. Simon formation) 

Upper Cambrian: Illinois (subsurface). 

J. S. Tcmpleton, Jr. 1950, 111. Acad. Sci. Trans., v. 43, p. 155.

Lachine formation

Ordovician: Quebec, Canada.

T. H. Clark, 1944, Royal Soc. Canada Trans., sec. 4, v. 38, p. 29; 1952, Quebec Dept. 

Mines Geol. Rept. 46, p. 77-80.

Lachute beds

Cambrian and Ordovician: Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 424, 425.

Lacomb gravels

Pleistocene: Oregon.

I. S. Allison, 1953, Oreg. Dept. Geology and Mineral Industries Bull. 37, p. 9.

LaCorne hornblende-granodiorite 

Precambrian: Quebec, Canada. 

W. C. Gussow, 1937, Royal Soc. Canada Trans., ser. 3, v. 31, sec. 4, p. 150.

Lacorocah meta-andesite tuff member (of Greenstone complex) 

Precambrian: New Mexico. 

Parry Reiche, 1949, Geol. Soc. America Bull., v. 60, no. 7, p. 1186, 1188.

La Crete formation

See Crete formation.

La Cruz Peak formation

Upper Cretaceous: New Mexico.

W. H. Tonking, [1954?], Geologic map and sections of the Puertecito quadrangle, 

New Mexico (1: 48,000) : N. Mex. Bur. Mines Min. Res. [preprint?] Bull. 41, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 199

Ladd formation

Upper Cretaceous: California.

W. P. Popenoe,1937, Jour. Paleontology, v. 11, no. 5, p. 380.

La F6 limestones

Upper Cretaceous (Santonian or Campanian) : Cuba.

J. F. de Albear, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 1, p. 76-77.

La Gloria formation

Upper Jurassic: Coahuila, Mexico.

R. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1105-1110.

Lagoon Nav§te group

Eocene (?) : Trinidad.British West Indies.

E. H. Cunningham-Craig, 1905, Trinidad Legislative Council Paper no. 25 of 1905,

p. 7, 8.

Lagoon Palmiste group

Eocene (?) : Trinidad, British West Indies.

E. H. Cunningham-Craig, 1905, Trinidad Legislative Council Paper no. 25 of 1905, 

p. 7, 8.

La Grulla granodiorite

Cretaceous: Baja California, Mexico.

A. O. Woodford and T. F. Harriss, 1938, Geol. Soc. America Bull., v. 49, no. 9, 

p. 1316-1317.

Laguna series

Precambrian (Archaen) : Manitoba, Canada. 

J. E. Armstrong, 1941, Canada Geol. Survey Map 665A.

Laguna Seca formation

Paleocene and Eocene: California.

M. B. Payne, 1951, Calif. Dept. Nat. Res., Div. Mines Special Rept. 9, p. 11-13.

Lahaina volcanic series

Pleistocene or Recent (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. iStearns and G. A. Macdonald, 1942, Hawaii Div. Hygrography 

Bull. 7, p. 180-181.

La Huerta siltstone member (of Salado formation) 

Permian: Subsurface in New Mexico and Texas. 

W. B. Lang, 1942, Am. Assoc. Petroleum Geologists Bull., v. 2Q, no. 1, p. 68, 72-74.

Laib group

Lower Cambrian: British Columbia, Canada.

H. W. Little, 1950, Canada Geol. Survey Paper 50-19, p. 15-18.

Laina volcanics

Pleistocene or Recent (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hygrography 

Bull. 7, p. 158, 180-181.

Laird sandstone

Miocene (?) : California.

C. E. Weaver, 1949, Geol. Soc. America Mem. 35, p. 17 (table 3), 65-67.

La Jar a member (of Datil formation)

See La Jara Peak member (of Datil formation).
200 GEOLOGIC NAMES OF NORTH AMERICA

La Jara Peak member (of Datil formation) 

(?) Miocene, upper: New Mexico.

W. H. Tonking, 1954, Dissert. Abs., v. 14, no. 2, p. 340; [1954?], Geologic map and 

sections of the Puertecito quadrangle, New Mexico (1: 48,000) : N. Mex. Bur. Mines 

Min. Res. [preprint?] Bull. 41, pi. 1.

Lak member (of Sundance formation)

Upper Jurassic: Wyoming and South Dakota.

R. W. Imlay, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 2, p. 257-259.

Lake basalt

Pliocene (?) : California.

H. A. Powers, 1932, Am. Mineralogist, v. 17, no. 7, p. 262-264.

Lake Agnes quartz monzonite 

Tertiary: Colorado. 

K. A. Gorton, 1953, Wyo. Geol. Assoc. Guidebook 8th Ann. Field Conf., p. 89-90.

Lake Agnes shale lentil (of Mount Whyte formation) 

Middle Cambrian: British Columbia, Canada.

C. D. Walcott, 1917, Smithsonian Misc. Coll., v. 67, no. 3, p. 93. 

Franco Rasetti, 1951, Smithsonian Misc. Coll., v. 116, no. 5, p. 62-63.

Lake Branch formation

Devonian: Quebec, Canada.

H. W. McGerrigle, 1954, Quebec Dept. Mines Geol. Kept. 62, p. 45.

Lake Charles formation 

Recent: Texas. 

W. A. Price, 1939, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 23, no. 12, p. 1875.

Lake City limestone

Eocene, middle: Florida (subsurface).

P. L. Applin and B. R. Applin, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, 

no. 12, p. 1680-1681, 1693-1695.

Lake Coahuila deposits

Pleistocene, upper: California.

L. A. Tarbet and W. H. Holman, 1944, (abs.) Am. Assoc. Petroleum Geologists Bull.,

v. 28, no. 12, p. 1782. 

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat Res., Div. Mines Bull. 170, chap. 2, p. 23, 25.

Lake Crockett formation

Cretaceous (Eagle Ford) : Texas.

C. L. McNulty, Jr., 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 2, p. 335-337

Lake Enchantment sediments 

Precambrian: Michigan.

Justin Zinn and others, 1955, Studies of stratified rocks occurring below the Huronian 

succession in the Marquette district, Michigan : Minn. Univ. Center for Continuation 

Study, Inst. of Lake Superior Geology [no pagination J.

Lake Kitchigama granite 

See Kitchigama granite.

Lake Mistassini group

Precambrian: Quebec, Canada.

W. G. Wahl, 1947, Quebec Dept. Mines Prelim. Rept. 211, p. 5, 7.

Lake Neosho shale member (of Altamont limestone)

Pennsylvanian (Des Moines) : Kansas, Missouri, and Nebraska. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 331-332.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 201

Lake Robertson granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. P. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 132-133.

Lake Vantage lavas

Miocene, upper: Washington.

G. F. Beck, 1936, Northwest Science, v. 10, no. 3, p. 22.

Lakeview Mountain tonalite

Cretaceous: California.

B. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 57-58.

Lake Waco formation

Cretaceous (Gulf) : Texas.

W. S. Adkins and P. E. Lozo in F. E. Lozo, 1951, Fondren Sci. Series, no. 4, p. 120-123, 

fig. 25.

Lake Wolford leucogranodiorite

Cretaceous: California.

B. S. Larsen, Jr., and N. B. Keevil, 1947, Geol. Soc. America Bull., v. 58, no. 6, p. 490.

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 82-85.

La Laja series

Oligocene: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 280, correlation chart.

Lambert formation

Upper Cretaceous: British Columbia, Canada.

J. L. Usher, 1952, Canada Geol. Survey Bull. 21, p. 26-27.

Lamb Point tongue (of Navajo sandstone) 

Jurassic and Jurassic (?) : Utah.

Paul Averitt and others, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 12, 

p. 2521.

La Motte granite

Precambrian: Quebec, Canada.

G. W. H. Norman, 1945, Econ. Geology, v. 40, no. 1, p. 4.

LaMotte-LaCorne granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 136-138.

Lampasas series

Pennsylvanian: Texas.

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 81-82.

La Mula shales

Lower Cretaceous: Coahuila, Mexico.

E. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 122,123.

Lancha limestone (in Pacheta member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 12.

Landrienne gabbro-peridotite complex

Precambrian (Archean) : Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Kept. 255, p. 2, 3.
202 GEOLOGIC NAMES OF NORTH AMERICA

Landrum shale member (of Crockett formation) 

Eocene, middle (Claiborne) : Texas. 

H. B. Stenzel, 1938, Tex. Univ. Bur. Econ. Geol. Pub. 3818, p. 20, 125, 134-148 [1939],

La Negra fades (of El Doctor limestone) 

Lower Cretaceous: Qtaeretaro, Mexico.

B. W. Wilson, J. P. Hernfindez M., and E. Meave T., 1955, Soc. Geol. Mexicana Bol., 

tomo 18, no. 1, p. 4, fig. 2.

Lanes tongue (of Ankareh formation) 

Triassic : Idaho and Wyoming. 

Bernhard Kummel, 1954, U. S. Geol. Survey Prof. Paper 254-H, p. 173, fig. 18.

Langdon shale

Pennsylvanian (Virgilian) : Missouri, Iowa, Kansas, and Nebraska. 

G. E. Condra and E. C. Reed, 1943, Nebr. Geol. Survey Bull. 14, p. 42, 43, 44.

Lansingan series

Cambrian: Minnesota, Iowa, Missouri, and Arkansas. 

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 75, no. 1, p. 74-76.

Lantern marl (in Chaudiere shale)

Upper Cretaceous: Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1947, Cushman Lab. Foram. Research Contr., v. 23, 

pt. 2, p. 32.

Lantz Mills facies (of Edinburg formation) 

Middle Ordovician: Virginia. 

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 78.

La Pause syenites

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 117.

La Pefia formation

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1119-1124.

La Perla shale member (of Yegua formation)

Eocene (Claiborne) : Texas, and Tamaulipas, Mexico.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, p. 259 

(fig. 2), 264.

La Poile group

Devonian: Newfoundland, Canada.

J. R. Cooper, 1954, Canada Geol. Survey Mem. 276, p. 15-18.

Laporte group

Precambrian (Proterozoic) : Quebec, Canada.

W. F. Fahrig, 1951, Canada Geol. Survey Paper (Prelim. Map) 51-23.

La Providencia granite

Cretaceous: Baja California, Mexico.

A. O. Woodford and T. F. Harriss, 1938, Geol. Soc. America Bull., v. 49, no. 9, 

p. 1317-1318.

Lar quartz diorite

Pre-Cretaceous(?) : California.

G. J. Neuerburg, 1953, Calif. Dept. Nat. Res., Div. Mines Special Rept. 33, 

p. 7 (table 1), 11-12, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 203

Laredo formation

Eocene, middle: Texas.

Julia Gardner, 1938, Washington Acad. Sci. Jour., v. 28, no. 7, p. 297-298.

La Reine granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 131-132.

Large Island beds (of Romaine formation)

Ordovician (Beekmantown): Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2,

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiplng,

China, University Press, Natl. Univ. Peking, p. 522.

Larkin formation

Precambrian or Paleozoic: British Columbia, Canada. 

A. G. Jones, 1948, Canada Geol. Survey Paper 48-4, p. 2.

La Ronge group

Precambrian: Saskatchewan, Canada.

J. B. Mawdsley and F. F. Grout, 1951, Saskatchewan Dept. Nat. Res. Kept. 4, p. 8.

Larrabee member (of Glens Falls formation)

Middle Ordovician (Mohawkian) : Vermont and New York. 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 262-263.

Larry sandstone member (of Gething formation) 

Lower Cretaceous: British Columbia, Canada. 

F. H. McLearn and B. J. W. Irish, 1944, Canada Geol. Survey Paper 44-15, p. 8.

Lasca formation

Cretaceous: Texas.

E. M. Huffington, 1947, Harvard Univ. Summaries of Theses, 1943-45, p. 196.

Las Colorados conglomerates

Oligocene, middle: Dominican Republic.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 23.

Las Cortinas formation

Cretaceous: Coahuila, Mexico.

W. E. Humphrey, 1941, S. Tex. Geol. Soc. [Guidebook] 13th Ann. Meeting, p. 3.

Las Graces formation

Mississippian (Meramec): New Mexico.

L. B. Laudon and A. L. Bowsher, 1949, Geol. Soc. America Bull., v. 60, no. 1, p. 17, 

fig. 4.

Las Espinas volcanics

Tertiary, middle or upper: Hidalgo, Mexico.

F. S. Simons, 1951, Stanford Univ. Abs. Dissert, v. 26, p. 333.

Las Feveras formation

Tertiary or Quaternary: New Mexico.

G. O. Bachman, 1953, U. S. Geol. Survey Oil and Gas Inv. Map OM 137.

La Sierra tonalite

Cretaceous: California.

E. S. Larsen, Jr., and N. B. Keevil, 1947, Geol. Soc. America Bull., v. 58, no. 6,

p. 488-489. 

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 71-72.

426779 57 14
204 GEOLOGIC NAMES OF NORTH AMERICA

Las Juntas shale

Eocene, lower: California.

C. B. Weaver, 1953, Wash. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 30-32.

Las Marias limestone

Upper Cretaceous: Puerto Rico.

R. C. Mitchell, 1954, Puerto Rico Univ. Agr. Expt. Sta. Tech. Paper 13, p. 47, 48, 93 

(fig. 10).

Lasso limestone

Oligocene [Aquitanian]: Mariana Islands (Tinian).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol.

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan Hydrog.

Office Bull., v. 11, p. 54, table 4 [English translation in library of U. S. Geol. Survey,

p. 65].

Last Chance quartz monzonite 

Post-Pennsylvanian: Utah. 

Bronson Stringham, 1953, Geol. Soc. America Bull., v. 64, no. 8, p. 965.

Latham shale

Lower Cambrian: California.

J. C. Hazzard, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 4, p. 30 

(table 1), pi. 2.

Latir Peak latite

Tertiary: New Mexico.

P. F. McKinlay, [1955?]. N. Hex. State Bur. Mines Min. Res. Bull. 42, p. 14, pi. 1.

La Tuna member (of Magdalena formation) 

Pennsylvanian: Texas.

L. A. Nelson, 1937, Colo. Univ. Studies, v. 25, no. 1, p. 89; 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 167, 170.

Laulau limestone

Miocene (Aquitanian) : Mariana Islands (Saipan).

Risaburo Tayama, 1938, Geomorphology, geology, and coral reefs of Saipan Island : 

Tropical Industry Inst., Palau, South Sea Islands, Bull. 1 [English translation in 

library of U. S. Geol. Survey, p. 56-60].

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. Paper 

253, p. 9-10.

Laupahoehoe volcanic series

Pleistocene and Recent (?) : Hawaiian Islands (Hawaii).

G. A. Macdonald, 1945, Am. Jour. Sci., v. 243, no. 4, p. 211-213, 214-215.

Laurel migmatite

Age unknown (post-Glenarm series) : Maryland.

Ernst Cloos and C. H. Broedel, 1940, Geologic map of Howard County and adjacent

parts of Montgomery and Baltimore Counties (1: 62,500) : Md. Geol. Survey. 

R. W. Chapman, 1942, Geol. Soc. America Bull., v. 53, no. 9, p. 1300-1328.

Laurel Canyon formation 

Paleozoic: California.

O. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Lava Falls tongue

Lower and/or Middle Cambrian: Arizona.

B. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 95.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1938-1955 205

La Vainilla limestone

Permian: Chiapas, Mexico.

M. L. Thompson and A. K. Miller, 1944, Jour. Paleontology, v. 18, no. 6, p. 486.

Laval formation

Middle Ordovician (Chazy) : Quebec, Canada.

T. H. Clark, 1944, Royal Soc. Canada Trans., sec. 4, v. 38, p. 29; 1952, Quebec Dept. 

Mines Geol. Kept. 46, p. 43-45.

Lavender shale member (of Fort Payne chert) 

Mississippian: Georgia.

Charles Butts in 'Charles Butts and Benjamin Gildersleeve, 1948, Qa. Geol. Survey 

Bull. 54, p. 43-44.

La Vida member (of Puente formation) 

Miocene, upper : California. 

J. B. Schoelhamer and others, 1954, U. S. Geol. Survey Oil and Gas Inv. Map OM 154.

Lawler tuff

See Lawlor tuff.

Lawlor tuff

Pliocene, lower: California. ; 

B. L. Clark, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 189 (fig. 72),

191 [preprint 1941], 

C. B. Weaver, 1949, Geol. Soc. America Mem. 35, p. 121-122.

Lawrence Harbour shale

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 8-9.

Lawrenceville shale (in McLeansboro formation) 

Pennsylvanian: Illinois and Indiana. 

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvanian

strata between Caseyville, Ky. and Vincennes, Ind.; Abs. Thesis, 111. Univ.: Urbana,

111., p. 3, 8.

Lawson limestone

Upper Cretaceous: Florida (subsurface).

P. L. Applin and B. R. Applin, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, 

no. 12, p. 1681, 1708-1709.

Layton formation

Pliocene: Jamica, British West Indies.

J. W. Spencer, 1898, Canadian Inst. [Toronto] Trans., v. 5, pt. 2, p. 338-342.

Leach formation

Pennsylvanian(?): Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Leach River [formation]

Carboniferous and younger: British Columbia, Canada. 

1948, Canada Geol. Survey Map 932A.

Leahurst formation

Upper Devonian: Alberta, Canada.

J. M. Andrichuk and J. S. Wonfor, 1954, Am. Assoc. Petroleum Geloogists Bull., v. 38, 

no. 12, p. 2505.
206 GEOLOGIC NAMES OF NORTH AMERICA

Leatham formation

Mississippian (Kinderhookian): Utah.

F. D. Holland, Jr., 1952, Am. Assoc. Petroleum Geologists Bull. v. 36, no. 9, 

p. 1719-1723.

Levenworth glacial stage

Pleistocene: Washington.

B. M. Page, 1939, Jour. Geology, v. 47, no. 8, p. 795-805.

Lebanon Junction siltstone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 147.

Lebeau member (of Le Moyen formation)

Recent: Louisiana (subsurface and surface).

P. H. Jones in P. H. Jones, A. N. Turcan, Jr., and H. E. Skibitzke, 1954, La. Dept. 

Conserv. Geol. Bull. 30, p. 89-90.

Lebec quartz monzonite

Jurassic (?) : California.

J. C. Crowell, 1952, Calif. Dept. Nat. Res., Div. Mines Special Eept. 24, p. 8-10.

Leckie group

Lower or Upper Cretaceous: British Columbia, Canada. 

C. E. Cairnes, 1943, Canada Geol. Survey Paper 43-15, p. 7.

Leclercville shale

Ordovician: Quebec, Canada.

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Kept. 204, p. 8, 11.

Ledbetter slate

Ordovician: Washington.

C. F. Park, Jr., 1938, Econ. Geology, v. 33, no. 7, p. 713, 714 (fig. 2). 

C. F. Park, Jr., and R. S. Cannon, Jr., 1943, U. S. Geol. Survey Prof. Paper 202, 

p. 6, 19-22, pi. 1.

Leduc member (of Woodbend formation)

Devonian: Alberta, Canada (subsurface).

D. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, 

p. 1821-1822.

Leecher metamorphics

Age uncertain (pre-Chelan batholith) : Washington.

J. D. Barksdale, 1948, Northwest Science, v. 22, no. 4, p. 165, 166.

Leeds facies (of Schoharie formation) 

Middle Devonian: New York.

Winifred Goldring and R. H. Flower, 1942, Am. Jour. Sci., v. 240, no. 10, p. 683, 686, 

691-693.

Leeds sandstone (in Silver Reef sandstone member of Chinle formation) 

Upper Triassic: Utah. 

P. D. Proctor, 1953, Utah Geol. Mineralog. Survey Bull. 44, p. 10-11, 25, 28.

Leeic period

Carboniferous (includes Mississippian, Ohartresan, and Gsihawanan of

Keyes): Iowa and upper Mississippi Valley. 

[C. R.] Keyes, 1941, Pan. Am. Geologist, v. 75, no. 2, p. 98, 149-150.

Le Fever limestone

Upper Silurian: New York.

G. H. Chadwick, 1944, N. Y. State Mus. Bull. 336, p. 47 (fig. 11), 51, 52 [1946].
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 207

Leffler gravels

Pleistocene: Oregon.

I. S. Allison, 1953, Oreg. Dept. Geology and Mineral Industries Bull. 37, p. 9-10.

Lefulufulua trachyte

Pliocene and lower Pleistocene (?) : Samoa Islands (Tutuila). 

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1285.

Legion Creek granite 

Precambrian: Texas.

V. B. Barnes, 1940, in Geol. Soc. America [Guidebook] 53d Ann. Meeting, p. 47, 53 

(geol. map).

Lehighton member (of Tully formation). 

Upper Devonian: Pennsylvania. 

R. E. Stevenson and W. S. Skinner, 1949, Pa. Aoad. Sci. Proc., v. 23, p. 31.

Lehman formation

Lower Ordovician (Chazyan) : Nevada and Utah.

L. F. Hintze, 1951, Utah Geol. Mineralog. Survey Bull. 39, p. 19-20.

Leicester marcasite member (of Moscow formation) 

Middle Devonian: New York. 

R. G. Button, 1951, Rochester Acad. Sci. Proc., v. 9, no. 5-6, p. 379-380.

Leila trachyte

Pliocene and lower Pleistocene (?) : Samoa Islands (Tutuila). 

H. T. Stearns, 1944, Geol. 'Soc. America Bull., v. 55, no. 11, p. 1285.

Lemba formation

Oligocene, upper: Dominican Republic.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 33.

Lemhi quartzite

Precambrian (Belt series) : Idaho.

C. P. Ross, 1947, Geol. Soc. America Bull., v. 58, no. 12, pt. 1, p. 1096-1097, pi. 1.

Lemon Cove schist

Triassic(?) : California.

Cordell Durrell, 1940, Calif. Univ. Dept. Geol. Sci. Bull., v. 25, no. 1, p. 14^15, 116.

Lemons Bluff member (of Marble Falls formation) 

Pennsylvanian (Morrow) : Texas.

F. B. Plummer, 1944, Tex. Univ. Bur. Econ. Geology Min. Res. Circ. 33, p. 3, 5, 8; 

1945, Tex. Univ. Pub. 4401, p. 67--69.

Lemont drift

Pleistocene (Illinoian) : Illinois.

J. H. Bretz, 1939, 111. State Geol. Survey Bull. 65, pt. 1, p. 53.

Leland Horberg and P. E. Potter, 1955, 111. State Geol. Survey Rept. Inv. 185, p. 7-19.

Le Moyen formation

Recent: Louisiana (subsurface and surface).

P. H. Jones in P. H. Jones, A. N. Turcan, Jr., and H. B. Skibitzke, 1954, La. Dept. 

Conserv. Geol. Bull. 30, p. 88-94.

Lena member (of Fleming formation) 

Miocene: Louisiana. 

H. N. Fisk, 1940, La. Dept. Conserv. Geol. Bull. 18, p. 118, 151-154.
208 GEOLOGIC NAMES OF NORTH AMERICA

Lengua beds

Miocene: Trinidad, British West Indies.

H. G. Kugler and others, [1939], Geological conference in Trinidad; notes on the

excursions : Petroleum Assoc. Trinidad, correlation table. 

H. H. Renz. 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 560, table facing p. 572.

Lenzie silt

Pleistocene (Tazewell or Cary) : Alberta, Canada. 

Leland Horberg, 1952, Jour. Geology, v. 60, no. 4, p. 313-316.

Leola volcanics

Precambrian: Washington.

C. P. Park, Jr. and R. S. Cannon, Jr., 1943, U. S. Geol. Survey Prof. Paper 202, 

p. 6, 9-11, pi. 1.

Leone volcanics

Recent (?) : Samoa Islands (Tutuila).

R A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 110-113, 13d.

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1285, 1306-1308.

Lepine'formation

Lower Cretaceous: British Columbia and Yukon, Canada. 

E. D. Kindle, 1944, Canada Geol. Survey Paper 44-16, p. 12-13.

Lepreau diorite

Middle Devonian (?) : New Brunswick, Canada. 

H. R. Belyea, 1944, Acadian Naturalist, v. 1, no. 3, p. 88.

Lepreau formation

Triassic: New Brunswick, Canada.

W. J. Wright and C. S. Clements, 1943, Acadian Naturalist, v. 1, no. 1, pi. 1.

F. J. Alcock, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-2.

Letham formation

Mississippian (Kinderhookian) : Utah.

F. D. Holland, Jr., 1952, Am. Assoc. Petroleum Geologists Bull., v. 36, no. 9, 

p. 1719-1720, 1724.

Lethbridge member (of Oldman formation) 

Upper Cretaceous: Alberta, Canada.

M. B. B. Crockford, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, 

p. 503-505.

Levack granite

Precambrian: Ontario, Canada.

H. C. Cooke, 1946, Canada Geol. Survey Bull. 3, p. 51-52.

Lexington glacial substage

Pleistocene (Wisconsin) : Massachusetts.

S. S. Judson, Jr., 1949, Peabody Foundation for Archaeology Papers, v. 4, no. 1. 

p. 23-34.

Lezard limestone member (of Saint Bartholomew formation) 

Eocene, middle: St. Bartholomew, French West Indies. 

R. A. Christman, 1953, Geol. Soc. America Bull., v. 64, no. 1, p. 70.

Liard formation

Middle Triassic: British Columbia, Canada.

B. D. Kindle, 1946, Canada Geol. Survey Paper 46-1, App. 1, p. 21-23.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 209

lobby formation

Precambrian (Belt series) : Montana.

Russell Gibson, 1948, U. S. Geol. Survey Bull. 956, p. 9, 17-19.

Liberty facies (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 154-166.

Liberty Memorial shale member (of Chanute formation) 

Pennsylvanian (Missouri series) : Missouri. 

J. R. Clair, 1943, Mo. Geol. Survey and Water Res., 2d ser., v. 27, pi. 1.

Libertytown metarhyolite

Precambrian (?): Maryland.

A. J. Stose and G. W. Stose, 1946, Md. Dept. Geology, Mines and Water Res., Carroll 

and Frederick Counties Rept., p. 58, 65.

Lichen Lake granite

Precambrian (Algoman?) : Quebec, Canada.

W. W. Longley, 1951, Quebec Dept. Mines Geol. Rept. 47, p. 16.

Licking Creek limestone

Lower Devonian: Pennsylvania.

F. M. Swartz, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, p. 1923. 

F. M. Swartz in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. Geol. 

Survey, ser. 4, Bull. G 19, p. 69-71.

Lick Run conglomerate

Lower Mississippian (Oil Lake) : Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Rept. 126, p. 16 (footnote).

Liebre quartz monzonite 

Jurassic (?) : California. 

J. C. Crowell, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 24, p. 10-11.

Lighthouse conglomerate

Mississippian (Kinderhook): Michigan.

H. M. Martin, 1936, The centennial geological map of the southern peninsula of 

Michigan (1:500,000) : Mich. Geol. Survey Div. Pub. 39 (Geol. Ser. 33).

Lightning formation

Recent: Wyoming.

L. B. Leopold and J. P. Miller, 1954, U. S. Geol. Survey Water-Supply Paper 1261, p. 11.

Liguanea formation

Pleistocene: Jamaica, British West Indies.

J. W. Spencer, 1898, Canadian Inst. [Toronto] Trans., v. 5, pt. 2, p. 347-349. 

C. A. Matley, 1951, Geology and physiography of the Kingston district, Jamaica: 

Inst. of Jamaica, p. 40-43, 63, geol. map.

Lille member (of Fernie formation) 

Jurassic: Alberta, Canada.

F. H. MeLearn, 1929, Canada NatL Mus. Bull. 58, p. 83.

J. Spivak, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 537.

Lilloise complex

Eocene (?): Southeast Greenland.

L. E. Wager, 1947, Meddel. om Gr0nland, bind 134, nr. 5, p. 42-44, 46. 

Lillooet group

Lower Cretaceous: British Columbia, Canada.

S. Duffel] and K. C. McTaggert, 1952, Canada Geol. Survey Mem. 262, p. 36-39.
210 GEOLOGIC NAMES OF NORTH AMERICA

Lima granite

Age unknown: Pennsylvania.

W. H. Tomlinson, 1954, Pa. Acad. Sci. Proc., v. 28, p. 189-192.

Lime Creek glacial stage

Pleistocene (Illinoian?): Colorado.

R. L. Nelson, 1954, Jour. Geology, v. 62, no. 4, p. 327-328.

Lime Hill member (of Logansport formation) 

Paleocene (Midway): Louisiana.

D. P. Meagher and L. C. Aycock, 1942, La. Dept. Oonserv. Geol. Pamph. 3, p. 12-16. 

G. B. Murray, Jr., and B. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull., 

v. 29, no. 1, p. 57-58.

Limeport limestone

Upper Cambrian (Dresbachian): Pennsylvania.

B. F. Howell, Henry Roberts, and Bradford Willard, 1950, Geol. Soc. America Bull., 

v. 61, no. 12, p. 1360-1361,1362,1364-1366.

Limestone Gap shale

Pennsylvanian (Morrow): Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854, 

901-902.

Limonar formation

Miocene, lower: Cuba.

J. F. de Albear, 1941, Soc. Cubana Ingenieros Rev., v. 36, p. 493, chart facing p. 564.

Limon Bocas formation 

Pliocene: Panama.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1578 (correlation chart).

Limones shale

Miocene, upper: Panama and Costa Rica.

H. N. Coryell and R. W. Mossman, 1942, Jour. Paleontology, v. 16, no. 2, p. 233.

J. W. Durham, 1950, Geol. Soc. America Mem. 43, pt. 2, table 10.

Lince-a-Jardin member (of Logy formation) 

Precambrian: Newfoundland, Canada. 

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 13,14.

Lincoln sandstone

Middle Cambrian: Kentucky (subsurface).

W. R. Jillson, 1948, New oil horizons in Kentucky: Frankfort, Ky., Roberts Printing 

Co., p. 27-29.

Lincolnshire limestone

Middle Ordovician: Virginia.

B. N. Cooper and C. B. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 863.

Lincolnshirian stage

Middle Ordovician (Chazyan): Virginia, West Virginia, and Kentucky.

Marshall Kay, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 8, p. 1402-1403, 

1405, 1406.

Lindemansbugt facies

Lower Cretaceous (Valanginian) : Northeast Greenland.

Andreas Vischer, 1943, Meddel. om Gr0nland, bind 133, nr. 1, p. 87-91, pi. 2.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1 955 211

Linderman sandstone

Lower Mississippian (Oil Lake): Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and GeoL Survey Progress Kept. 126, p. 12 (footnote).

Linklater formation

Precambrian (Keewatin) : Ontario, Canada.

W. C. Gussow, 1942, Ontario Dept. Mines Ann. Kept., v. 49, pt 6, p. 5-6.

Linn gravels

Pleistocene: Oregon.

I. S. Allison, 1953, Oreg. Dept. Geology and Mineral Industries Bull. 37, p. 11-12.

Linn subgroup

Pennsylvanian (Missourian) : Kansas, Iowa, Missouri, Nebraska, and

Oklahoma.

R. C. Moore, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 11, p. 2029-2080, 

2031.

Linnian series

Devonian (Devonic): Iowa and Missouri.

[C. R.] Keyes, 1939, Pan-Am. Geologist, v. 72, no. 1, p. 64.

Linton formation

Pennsylvanian: Indiana.

C. B. Wier, 1950, U. S. Geol. Survey Coal Inv. Map C 1.

Linwood shales

Pennsylvanian: Kansas.

[C. R.] Keyes, 1937, Pan-Am. Geologist, v. 67, no. 5, p. 366.

Lion Head member (of Manistique formation)

Middle Silurian (Niagaran): Ontario, Canada.

B. W. Shaw, 1937, Royal Canadian Inst. Trails., v. 21, pt. 2, p. 320.

Lippincott member (of Lost Burro formation) 

Middle (?) and Upper Devonian: California. 

J. F. McAllister, 1955, Calif. Dept. Nat. Ees., Div. Mines Special Rept. 42, p. 12, pi. 2.

Lisco member (of Broadwater formation) 

Pleistocene, lower: Nebraska. 

C. B. Schultz and T. M. Stout, 1945, Am. Jour. Sci., v. 243, no. 5, p. 232-236.

Lithonia granite-gneiss

Precambrian (?): Georgia.

T. L. Watson, 1902, Ga. Geol. 'Survey Bull. 9-A, p. 54, 125-127.

L. A. Hermann, 1954, Ga. Geol. Survey Bull. 61, p. 8-15, 34-41, 68-73, 78-79.

Little Bay Head lavas

Lower Ordovician: Newfoundland, Canada.

H. J. MacLean in G. V. Douglas and others, 1940, Newfoundland Geol. Survey

Bull. 20, p. 89. 

H. J. MacLean, 1947, Newfoundland Geol. Survey Bull 22, p. 17.

Little Bear formation

Upper Cretaceous: Northwest Territories (Mackenzie), Canada. 

J. S. Stewart, 1944, Canadian Inst. Mining and Metallurgy Trans., v. 47, p. 163; 

1945, Canada Geol. Survey Paper 45-29, p. 7.

Little Bear formation or residuum

Lower Cretaceous: Mississippi, Alabama, Tennessee, and Kentucky. 

F. F. Mellen, 1937, Miss. State Geol. Survey Bull. 34, p. 8-20, 27-29.
212 GEOLOGIC NAMES OF NORTH AMERICA

Little Chain limestone (in McLeansboro formation) 

Pennsylvanian: Illinois. 

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvanian

strata between Caseyvllle, Ky., and Vincennes, Ind., Abs. Thesis, 111. Univ.; Urbana,

111., p. 3, 8.

Little Chief Canyon member (of Lodgepole limestone) 

Lower Mississippian: Montana.

M. M. Knechtel, J. E. Smedley, and R. J. Ross, Jr., 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 11, p. 2395-2399.

Little Elk gneissoid granite

Precambrian: South Dakota.

G. L. Taylor, 1935, Am. Jour. ScL, 5th ser., v. 29, no. 171, p. 283-284.

Little Indian Pool beds

Upper Ordovician: Quebec, Canada.

H. W. McGerrlgle, 1950, Quebec Dept. Mines Geol. Rept. 35, p. 31.

Little Osage shale member (of Fort Scott formation)

Pennsylvanian (Des Moines): Kansas, Missouri, and Nebraska. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 306-309.

Little Lawn formation

Ordovician(?) : Newfoundland, Canada.

R. E. Van Alstine, 1948, Newfoundland Geol. Survey Bull. 23, p. 13-14.

Little Missouri lens (in Newcastle formation) 

Upper Cretaceous: Wyoming. 

R. M. Grace, 1952, Wyo. Geol. 'Survey Bull. 44, p. 14, 15-16.

Little Natches member (of Cook Mountain formation) 

Eocene (Claiborne) : Louisiana. 

J. Huner, Jr., 1939, La. Dept. Conserv. Geol. Bull. 15, p. 101-109.

Little Pavlof agglomerate 

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Rept. 2, pt. 2, pi. 2 (geol. map).

Little Pawnee shale member (of Cass formation) 

Pennsylvanian (Virgil) : Nebraska. 

G. E. Condra, 1949, Nebr. Geol. Survey Bull. 16, p. 29.

Little River series

Paleozoic (?) : Georgia.

A. L. Peyton and H. E. Cofer, Jr., 1950, U. S. Bur. Mines Rept. Inv. 4665, p. 4-5.

G. W. Crickway, 1952, Ga. Geol. Survey Bull. 58, p. 31-33.

Little Rock Creek limestone 

Devonian: Indiana. 

G. A. Cooper, 1941, Washington Acad. Sci. Jour., v. 31, no. 5, p. 181.

Little Shades sandstone member (of Parkwood formation) 

Mississippian (Chester) : Alabama. 

R. B. Morton, 1949, Miss. Geol. Soc. Guidebook 7th Field Trip, p. 37, 38, 40, 41.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 213

Little Union quartz latite

Tertiary, upper, or lower Pleistocene (?) : Colorado.

C. H. Behre, Jr., E. N. Goddard, and A. E. Sandberg, 1939, Preliminary geologic map

of west slope of Mosquito Range in the vicinity of Leadville, Colorado (1:12,000) :

U. S. Geol. Survey. 

C. H. Behre, Jr., 1939, Colo. Sci. Soc. Proc., v. 14, no. 2, p. 66-67.

Little Valley limestone

Mississippian (Warsaw age) : Virginia.

Paul Averitt, 1941, Va. Geol. Survey Bull. 56, p. 17-21.

Little Vermilion cyclothem (including Little Vermilion limestone) 

Pennsylvanian: Illinois.

R. C. Moore and others, 1944, Geol. Soc. America Bull., v. 55, no. 6, Chart 6,

column 29. 

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 14,16.

Little Wabash sandstone (In McLeansboro formation) 

Pennsylvanian: Illinois and Indiana. 

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvanian

strata between Caseyville, Ky. and Vincennes, Ind.; Abs. Thesis, 111. Univ.: Urbana,

111., p. 9.

Little Willow series 

Precambrian: Utah. 

A. E. Granger and others, 1952, Utah. Geol. Soc. Guidebook 8,, p. 3.

Liveoak member (of Tejon formation) 

Eocene: California. 

J. G. Marks, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1922.

Livingstone formation

Carboniferous: Alberta, Canada.

E. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Lizard Springs formation

Paleocene, lower: Trinidad, British West Indies.

Ernst Lehner, 1935, [France] Office national des combustibles liquides annales, 10*

annee, no. 4, p. 717 (table). 

J. A. Cushman and H. H. Eenz, 1946, Cushman Lab. Foram. Research Special Pub. 18,

p. 1-12.

Lloydminster shale

Upper Cretaceous: Alberta, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1615-1618.

Lobato basaltic lavas

Quaternary: New Mexico.

H. T. U. Smith, 1938, Jour. Geology, v. 46, no. 7, p. 959.

Loch Lomond series

Middle Cambrian: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 69-76.

Locomotive fanglomerate

Tertiary, middle (?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 40-43.

Lodge Bay granite

Precambrian: Saskatchewan, Canada.

A. M. Christie, 1952, Canada Geol. Survey Mem. 269, p. 32.
214 GEOLOGIC NAMES OF NORTH AME'RICA

Lodgepole rhyolite and obsidian 

Tertiary: Wyoming. 

R. E. Wilcox, 1944, Geol. Soc. America Bull., v. 55, no. 9, p. 1054-1055, pi. 2.

Lodo formation

Paleocene and Eocene: California.

R. T. White, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 257; 1940, Am. Assoc. 

Petroleum Geologists Bull., v. 24, no. 10, p. 1735-1745.

Logan Hill formation

Pleistocene, lower: Washington.

P. D. Snavely, Jr., and others, 1951, U. S. Geol. Survey Coal Inv. Map C 8, sheet 1.

Logansport formation

Paleocene (Midway) : Louisiana.

G. [E.] Murray, Jr., 1941 (abs) Am. Assoc. Petroleum Geologists Bull., v. 25, no. 5,

p. 941-942.

G. E. Murray, Jr., and E. P. Thomas, 1945, (abs.) Am. Assoc. Petroleum Geologists 

Bull., v. 29, no. 1, p. 57-58.

Logansport limestone

Middle Devonian: Indiana.

G. A. Cooper and A. S. Warthin, 1941, Washington Acad. Sci. Jour., v. 31, no. 6, p. 259.

Loggy Bayou member (of Hall Summit formation) 

Paleocene (Midway) : Louisiana.

D. P. Meagher and L. C. Aycock, 1942, La. Dept. Conserv. Geol. Pamph. 3, p. 12-16. 

G. E. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull., 

v. 29, no. 1, p. 59.

Log Springs formation

Lower Pennsylvanian (Morrow) : New Mexico.

A. K. Armstrong, 1955, N. Mex. State Bur. Mines Min. Res. Circ. 39, p. 5, 9-10.

Logtown Ridge formation

Middle or Upper Jurassic: California.

N. L. Taliaferro, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 125, p. 283.

Logy formation

Precambrian: Newfoundland, Canada.

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 13-14.

Loma Blanca tongue (of Yegua formation) 

Eocene (Claiborne) : Texas.

W. G. Kane and G. B. Gierhart, 1935, Am. Assoc. Petroleum Geologists Bull., v. 19,

no. 9, p. 1374-1375. 

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2,

p. 259 (fig. 2), 265-266.

Loma Candela formation 

Eocene, middle: Cuba. 

J. A. Cushman and P. J. Bermudez, 1949, Cushman Lab. Foram, Research Contrib.,

v. 25, pt. 2, p. 27, 45. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., T. 19, no. 3, p. 239-244.

Loma Yucatan limestone

Upper Cretaceous (Campanian) : Cuba.

H. J. MacGillavry, 1937, Geog. Geol. Meded. (Utrecht Univ.) Physiog.-Geol. Reeks, 

no. 14, p. 20.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 215

Lonesome formation

Upper Jurassic (?) : Oregon.

K. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 265-266.

Long Draw glacial substage

Pleistocene (Wisconsin) : Colorado, Wyoming, and New Mexico.

L. L. Ray, 1939, (abs.) Geol. Soc. America Bull., T. 50, no. 12, pt. 2, p. 2007. 

Kirk Bryan and L. L. Bay, 1940, Smithsonian Misc. Coll., v. 99, no. 2, p. 34.

Long Harbor series

Ordovician(?) : Newfoundland, Canada.

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

Long Mountain granite

Upper Devonian (?) : New Hampshire.

E. W. Chapman, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, p. 1187; 

1948, v. 59, no. 11, p. 1079-1081, pi. 1.

Long Rapids shale

Devonian: Ontario, Canada.

E. M. Kindle, 1939, Geologic der Erde, North America, v. 1, p. 197, 199, 202.

Long Reach formation

Upper Silurian: New Brunswick, Canada.

G. S. Mackenzie, 1951, Canada Geol. Survey Paper (Prelim. Map) 51-15.

Longs Peak-St. Vrain granite 

Precambrian: Colorado. 

E. E. Wahlstrom, 1940, Econ. Geology, v. 35, no. 4, p. 480.

Looma member (of Grand Rapids formation)

Lower Cretaceous: Alberta, Canada (subsurface). 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 6.

Loomis member (of Mount Head formation) 

Mississippian: Alberta, Canada.

R. J. W. Douglas and P. Barker, 1955, (abs.) Am. Assoc. Petroleum Geologists and 

Alberta Soc. Petroleum Geologists, Program Western Canada Regional Meeting and 

5th Ann. Field Trip, p. 18.

Loon Lake quartz-syenitic complex 

Precambrian: New York.

A. F. Buddington, 1948, Geol. Soc. America Mem. 28, p. 25; 1953, N. Y. State Mug. 

Bull. 346, p. 71, 81-84.

Lorane shale member (of Spencer formation) 

Eocene: Oregon.

H. E. Yokes, P. D. Snavely, Jr., and D. A. Myers, 1951, U. S. Geol. Survey Oil and 

Gas Inv. Map OM 110.

Los Arrieros shale member (of Yegua formation) 

Eocene (Claiborne) : Texas.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, 

p. 259 (fig. 2), 266.

Los Arro jos formation

See Arrojos formation.
216 GEOLOGIC NAMES OF NORTH AMERICA

Los Atajos member (of Brasso formation)

Miocene, upper: Trinidad, British West Indies.

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11,

p. 1451 (chart). 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 554.

Los Banos Creek member (of "Quinto B" reef beds) 

Upper Cretaceous: California. 

C. T. Smith, 1945, Jour. Paleontology, v. 19, no. 1, p. 38.

Los Gatog beds

Upper Cretaceous: California.

F. M. Anderson, 1937, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, 

p. 1612.

Los Medanos formation

Pliocene, lower: California.

B. L. Clark, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 189 (fig. 72), 

191 [preprint 1941].

Los Muertos Creek formation 

Eocene, middle: California.

1. P. Wilson, 1943, Calif. Jour. Mines and Geology, v. 39, no. 2, p. 205-206, 226 

(fig. 5).

Lospe formation

(?) Miocene, lower: California. 

C. P. Tolman, 1927, Econ. Geology, v. 22, no. 5, p. 459.

S. G. Wissler and P. B. Dreyer, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, 

p. 237, 238 [preprint 1941].

Los Pinos granite

Precambrian: New Mexico.

J. T. Stark and E. C. Dapples, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, 

pt. 2, p. 1936 ; 1946, v. 57, no. 12, pt. 1, p. 1136-1138.

Lost Burro formation

Middle (?) and Upper Devonian: California.

J. P. McAllister, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 25, p. 18-20.

Lost conglomerate member (of Pepetto formation) 

Pliocene, lower: California. 

C. J. Kundert, 1952, Calif. Dept. Nat. Res., Div. Mines Special R«pt. 18, p. 9, 10 (fig. 9).

Lost Creek trachyte

Miocene and/or Pliocene: Wyoming.

A. D. Howard, 1937, Geol. Soc. America Special Paper 6, p. 21-24, 78.

Lost Nation quartz diorite

Upper Ordovician: New Hampshire.

R. W. Champman, 1935, Am. Jour. Sci., 5th ser., v. 30, no. 179, p. 405, fig. 1.

Lost Run conglomerate

Ordovician: Pennsylvania.

F. M. Swartz, 1948, Field Conf. Pa. Geologists Guidebook 14th Ann. [Meeting] 

ISupp.], p. 4-5.

Lost Sheep dolomite

Middle Silurian: Utah.

F. W. Osterwald, 1953, U. S. Geol. Survey Trace Elements Inv. Rept. TEI-330, p. 105.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 217

Lostway member (of Richfield formation)

Precamt»rian or Lower Cambrian: British Columbia, Canada. 

A. H. Laag, 1938, Canada Geol. Survey Paper 38-16, p. 8.

Los Vallos member (of Yeso formation) 

Permian: New Mexico.

V. C. Kdley and G. H. Wood, 1946, TL S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 4T.

Lotbini£re shale

Or do vie! an: Quebec, Canada.

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Kept. 204, p. 7-8.

Louann salt

Permiar : Subsurface in Arkansas, Louisiana, and Texas.

E. T. Ha::zard, W. C. Spooner, and B. W. Blanpied, [1947], Shreveport Geol. Soc. 1945 

Eef. E.jpt. v. 2, p. 483, 484, 488.

Loughridge lormation

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 21, figs. 3, 12.

Lousetown formation

Pliocene upper, or Pleistocene: Nevada.

J. P. Thayer, 1937, Geol. Soc. America Bull., v. 48, no. 11, p. 1648-1649.

Loutre formution

Pennsylvanian (Des Moines) : Missouri.

H. S. McCJueen, 1943, Mo. Geol. Survey and Water Res., 2d ser., v. 28, p. 71-78.

Louvicourt granodiorite

Precambrian (Archean): Quebec, Canada.

A. S. MacLaren, 1950, Canada Geol. Survey Map 997A.

Lovell membor (of Mt. Simon formation) 

Upper Cumbrian: Illinois (subsurface). 

J. S. Templeton, Jr., 1950, III. Acad. Sci. Trans., v. 43, p. 155.

Lovington sa:adstone member (of San Andres formation) 

Permian (Leonard): New Mexico and Texas.

J. M. Hills in R. L. Bates, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 18, 

p. 269,1170-271.

Lowell formation

Lower Cretaceous: Arizona.

A. A. Stoyiinow, 1949, Geol. Soc. America Mem. 38, p. 8-18.

Lower Amate formation

See Amate (Lower and Upper) formation.

Lower Medinilla limestone

See Medimlla (Lower and Upper) limestone.

Lowes Grove beds

Triassic: North Carolina.

Grover Murray, Jr., 1938, Science, v. 87, no. 2261, p. 390.

Low Hollow Limestone member (of Maynardville limestone) 

Upper Canbrian: Virginia.

E. L. Miller and J. O. Fuller, 1947, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 76.
218 GEOLOGIC NAMES OF NORTH AMERICA

Low Lands formation

Miocene: St. Martin, Netherlands and French West Indies. 

G. A. F. Molengraaf, 1931, Leidsche Geol. Meded., Deel 5, p. 737.

Low Layton pillow lavas

Miocene to Pliocene: Jamaica, British West Indies.

C. T. Trechmann, 1929, Geol. Mag., v. 73, no. 6, p. 255; 1942, v. 79, no. 3, p. 174.

Lucia shale

Eocene: California.

R. R. Thorup, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1958; 

1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 464, 465.

Lucile series

Upper Triassic: Idaho.

W. R. Wagner, 1945, Idaho Bur. Mines and Geology Pamph. 74, p. 5-6.

Lucky Bill formation

Miocene (?) : New Mexico.

R. M. Hernon, W. R. Jones, and S. L. Moore, 1953, N. Mex Geol. Soc. Guidebook 4th 

Field Conf., p. 120.

Lucky Jim limestone (in Zincton member of Slocan series) 

Triassic: British Columbia, Canada. 

M. S. Hedley, 1947, British Columbia Dept. Mines Bull. 22, p. 9.

Lue Point member (of Logy formation) 

Precambrian: Newfoundland, Canada. 

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 13, 14.

Luke Arm formation

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 4-6.

Lukfata sandstone formation 

Cambrian (?) : Oklahoma. 

W. D. Pitt, 1955, Okla. Geol. Survey Circ. 34, p. 13-15, pi. 1.

Lula facies (of Cow Bayou member of Logansport formation) 

Paleocene (Midway) : Louisiana. 

G. B. Murray, 1948, La. Dept. Conserv. Geol. Bull. 25, p. 112-114.

Luman tongue (of Green River formation) 

Eocene, lower: Wyoming. 

G. N. Pipiringos, 1955, Wyo. Geol. Assoc. Guidebook 10th Ann. Field Conf., p. 100,101.

Lushs Bight group

Ordovician (?) : Newfoundland, Canada.

G. H. Bspenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 13.

Lusk formation or cyclothem 

Pennsylvanian: Illinois. 

J. M. Weller, 1940, 111. State Geol. Survey Rept. Inv. 71, p. 36-37.

Lutie member (of Theodosia formation)

Lower Ordovician: Missouri and Arkansas.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 25, 27, pi. 8.

Lydia granodiorite

Age not stated: Virginia.

W. A. Nelson, 1949, (abs.) Va. Acad. ScL Proc. 1948-1949, p. 139.
GEOLOGIC NAMES OF NOETH AMERICA INTRODUCED IN 1936-1955 219

Lyleton shale

Devonian: Manitoba, Canada (subsurface).

J. D. Allan and L. B. Kerr, 1950, Precambrian, v. 23, no. 10, p. 10.

Lynn out wash

Pleistocene: British Columbia, Canada.

J. B. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 322, 

p. 48, table, map.

Lyre formation

Eocene: Washington.

C. B. Weaver, 1937, Wash. [State] Univ. Pubs, in Geology, v. 4, p. 121.

Lytle sand

Devonian: Pennsylvania.

P. A. Di;key, E. F. Sherrill, and L. S. Matteson, 1943, Pa. Geol. Survey, ser. 4, 

Bull M 25, p. 22, 25-26.

Maalebjerg sieries (of Bleonore Bay formation)

Precambrian (Greenlandian) : Northeast Greenland.

John Haller, 1953, Meddel. om Grjzfnland, bind 113, nr. 5, p. 25-28, 190, pi. 1.

Mabou Mines formation

Pennsylvanian: Nova Scotia and New Brunswick, Canada. 

M. J. Copeland, 1955, Dissert. Abs., v. 15, no. 8, p. 1370.

Mabury formation

Eocene, middle: California.

Martin Van Couvering and H. B. Alien, 1943, Calif. Dept. Nat. Res., Div. Mines 

Bull. 1] 8, pt 3, p. 496-500.

Macabou limestone

Oligocens, upper: Martinique, French West Indies.

Jean Giraud, 1918, Esquisse geologique de la Martinique avec carte geologique: HanoiHaiphong, Imprimerie d'Extreme-Orient, p. 12. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1596.

McAdam Lake formation

Lower or Middle Devonian: Nova Scotia, Canada.

W. A. Bell and B. A. Goranson, 1938, Canada Geol. Survey Map 360A.

Macaya formation

Upper Cretaceous: Haiti.

Jacques Butterlin, 1954, Inst Frangais d'Halti Mem. 1, p. 52.

McBride grotp

Precambiian: Alberta, Canada.

M. K. Sormsen, 1955, Alberta Soc. Petroleum Geologists Guidebook 5th Ann. Field 

Conf., p. 57.

McBryde linu stone member (of Clay ton formation) 

Paleocene (Midway age): Alabama.

F. S. MacNeil, 1946, U. S. Geol. Survey Strategic Minerals Inv. Prelim. Rept. 3-195, 

p. 7-8.

MacCodrum formation

Lower Ca tnbrian: Nova Scotia, Canada.

R. D. Hutchlnson, 1952, Canada Geol. Survey Mem. 263, p. 37-39.

426779 57 15
220 GEOLOGIC NAMES OF NORTH AMERICA

McCombs limestone member (of Bell Canyon formation)

Permian (Guadalupe series): Texas.

N. D. Newell and others, 1953, The Permian reef complex of the Guadalupe Mountains 

region, Texas and New Mexico : San Francisco, W. H. Freeman and Co., p. 15, 53.

W. C. Warren in P. B. King, N. D. Newell, and D. W. Boyd, 1955, Permian field conference to the Guadalupe Mountains : Soc. Econ. Paleontologists and Mineralogists, 

p. 10, 60.

McConnell formation

Devonian: British Columbia, Canada.

L. R. Laudon and B. J. Chronic, Jr., 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, 

no. 2, p. 197.

McCoy Head formation

Upper Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 118.

McCoy Mountains formation

Upper Paleozoic or Triassic: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 32, 49-52.

McCracken member (of Elbert formation)

Upper Devonian: Subsurface in Utab, Arizona, Colorado, and New Mexico. 

R. L. Knight and J. C. Cooper, 1955, Four Corners Geol. Soc. Guidebook [1st] Field 

Conf., p. 56, fig. 1.

McCraney limestone

Lower Mississippian: Illinois.

R. E. Grim, J. E. Lamar, and W. F. Bradley, 1937, Jour. Geology, v. 45, no. 8,

p. 832, 836. 

M. A. Stainbrook, 1950, Am. Jour. Sci., v. 248, no. 3, p. 194-212.

McCutcheon volcanic series 

Tertiary: Texas. 

G. K. Eifler, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 4, p. 342.

McDonald sbale member (of Monterey formation) 

Miocene, upper: California. 

J. A. Cushmau and P. P. Goudkoff, 1938, Cushman Lab. Foram. Research Contr.

v. 14, pt. 1, pi. 1.

R. R. Simonson and M. L. Krueger, 1942, Am. Assoc. Petroleum Geologist Bull., v. 26, 

no. 10, p. 1616-1617.

Macdonald Glen formation

Pennsylvanian: New Brunswick and Nova Scotia, Canada. 

M. J. Copeland, 1955, Dissert. Abs., v. 15, no. 8, p. 1370.

Macdougal group

Cambrian: Nortbwest Territories (Mackenzie) and Yukon, Canada.

J. S. Stewart, 1944, Canadian Inst. Mining and Metallurgy Trans., v. 47, p. 163.

G. S. Hume and T. A. Link, 1945, Canada Geol. Survey Paper 45-16, p. 7-9.

Macedonia formation or cyclotbem 

Pennsylvanian: Illinois. 

J. M. Weller, 1940, 111. State Geol. Survey Rept. Inv. 71, p. 39, 40.

McGalls soil

Pleistocene: Bermuda Islands.

R. W. Sayles, 1931, Am. Acad. Arts Sci. Proc., v. 66, no. 11, p. 396.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED DST 1936-1955 221

McGrath gneiss

Precambrian (Algoman) : Minnesota.

M. S. Woyski, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1002, 1014, pi. 1.

McHale slate

Precambrian (Beltian) : Washington.

lan Campbell and J. S. Loofbourow, Jr., 1946, (abs.) Geol. Soc. America Bull, 

v. 57, no. 12, pt. 2, p. 1250.

Machegit conglomerate member (of Tagpochau limestone) 

Miocene, lower: Mariana Islands (Saipan).

P. E. Cloud, Jr., R. G. Schmidt, and H. W. Burke, 1955, in Military Geology of Saipan, Mariana Islands: U. S. Army Corps of Engineers, Far East Command, v. 1, 

p. 9, pi. 2.

Macho pyroxene andesites

Tertiary, lower (?) : New Mexico.

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Res. Bull. 37, p. 39-40.

Mclntosh formation

Eocene, middle to upper: Washington.

P. D. Snavely, Jr., and others, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, 

no. 5, p. 1052-1060.

McKee sandstone

Middle Ordovician: Texas (subsurface).

Taylor Cole, C. D. Cordry, and H. A. Hemphill, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, p. 279-281.

Mackentire "red-beds" tongue (of Phosphoria formation) 

Permian: Utah. 

J. S. Williams, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 1, p. 91-93.

MacKenzie Island graywacke

Precambrian: Ontario, Canada.

F. J. Pettijohn, 1937, Geol. Soe. America Bull., v. 48, no. 2, p. 187, 190.

McKinney Knob member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 162.

Mackintosh Bay granite

Precambrian: Saskatchewan, Canada.

A. M. Christie, 1952, Canada Geol. Survey Mem. 269, p. 41-43.

MacLean Brook formation

Middle Cambrian: Nova Scotia, Canada.

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 42-45.

McLellan Brook sub-member (of Thorburn member of Stellarton series) 

Pennsylvanian: Nova Scotia, Canada. 

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 44, 45 [1941].

McLeod Brook formation

Upper Cambrian (?) and Lower Ordovieian: Nova Scotia, Canada. 

R. D. Hutehinson, 1952, Canada Geol. Survey Mem. 263, p. 28-30.

McMichel member (of McKenzie Hill formation) 

Lower Ordovician: Oklahoma. 

C. E. Decker, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1319, table 1.
222 GEOLOGIC NAMES OF NORTH AMERICA

MacMullin formation

Middle Cambrian: Nova Scotia, Canada.

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 20-26.

McNabb limestone (in Senora formation)

Pennsylvanian (Desmoinesian) : Oklahoma.

C. C. Branson, 1954, Okla. Geol. Survey Guidebook 2, p. 3, 5.

MacNeil formation

Upper Cambrian: Nova Scotia, Canada.

B. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 26-28.

McRae formation

Upper Cretaceous and Tertiary (?) : New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 114, 

115-120.

McShan formation

Upper Cretaceous: Alamaba and Mississippi.

L. C. Conant and W. H. Monroe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 37.

Macumber formation

Mississippian: Nova Scotia, Canada.

L. J. Weeks, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-26.

Macuspana limestone

Oligocene: Tabasco, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. '280, correlation chart. 

G. P. Salas and Ernesto Lopez Ramos, 1951, Asociacifin Mexicana Geologos Petroleros 

Bol., v. 3, nos. 1-2, p. 33-34.

Macuspana shale

Oligocene: Tabasco, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 280, correlation chart.

McWain sandstone

Pennsylvanian: Illinois.

J. R. Ball, 1943, 111. State Acad. Sci. Trans., v. 36, no. 2, p. 150; 1952, 111. State 

Geol. Survey Bull. 77, p. 44-45.

McWatters group

Precambrian (Archean) : Quebec, Canada.

M. E. Wilson, 1943, Royal Soc. Canada Trans., ser. 3, v. 37, sec. 4, p. 128-129.

Macy limestone or formation

Middle Ordovician: Missouri.

B. R. Larson, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 9, p. 2058-2060.

Mafeking formation

Middle Devonian: Manitoba, Canada.

C. H. Crickmay, 1954, Western Canada sedimentary basin: Tulsa, Okla., Am. Assoc. 

Petroleum Geologists, p. 149-150.

Magdalena series

Middle Cretaceous: Oaxaca, Mexico.

Tornas Barrera, 1946, Gufa geol. de Oaxaca : Mexico Universidad Nac., Inst. Geologfa, 

p. 54.

Magenta member (of Rustler formation) 

Permian (Ochoa) : New Mexico. 

J. E. Adams, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 11, p. 1614.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 223

Mahala sandstone and conglomerate 

Miocene, upper: California.

M. L. Krueger, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 363. 

A. O. Woodford, T. G. Moran, and J. S. Shelton, 1946, Am. Assoc. Petroleum Geologists 

Bull., v. 30, no. 4, p. 521.

Mahogany member (of Ankareh formation) 

Triassic: Utah. 

Bernhard Kummel, 1954, U. S. Geol. Survey Prof. Paper 254-H, p. 180, fig. 18.

Maiden Point sandstone

Ordovician: Newfoundland, Canada.

J. R. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 9-10.

Maikasagi River gneiss

Precambrian: Quebec, Canada.

J. E. Gilbert, 1947, Quebec Dept. Mines Prelim. Rept. 210, p. 8.

Mainchi formation

See Mainsjie formation.

Main Ridge formation

Cretaceous (?) : Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 806.

Mainsjie formation

Eocene, upper: Curagao, Netherlands West Indies.

H. P. Sehaub, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 7, p. 1283,

1285-1288.

Maitland beds

Cambrian and Ordovician: Ontario, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 406, 414, 424, 425, 550, 551.

Maitlen phyllite

Cambrian: Washington.

C. F. Park, Jr., 1938, Econ. Geology, v. 33, no. 7, p. 713, 714 (fig. 2). 

C. F. Park, Jr., and R. S. Cannon, Jr., 1943, U. S. Geol. Survey Prof. Paper 202, p. 6, 

15-17, pi. 1.

Makaino basaltic andesite

Pleistocene (?) : Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography Bull. 7, p. 230, 246-247.

Makanaka drift and stage

Pleistocene: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1939, (abs.) Geo. Soc. America Bull., v. 50, no. 12, pt. 2, p. 1942. 

C. K. Wentworth and W. B. Powers, 1941, Geol. Soc. America Bull., v. 52, no. 8, 

p. 1206-1207.

Makapipi basalt

Pleistocene (?) : Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography Bull. 7, p. 231, 241-243.

Makaweli formation

Pliocene (?) : Hawaiian Islands (Kauai).

G. A. Macdonald, D. A. Davis, and D. C. Cox, 1954, Volcano Letter 526, p. 2,
224 GEOLOGIC NAMES OF NORTH AMERICA

Mak Hill glaciation

Pleistocene (Wisconsin) : Alaska.

B. H. Muller in T. L. Pew6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 2, 

13 (table 1).

Makkovik granite

Precambrian (Timrskaming) : Newfoundland (Labrador), Canada. 

E. H. Kranck, 1939, Newfoundland Geol. Survey Bull. 19, p. 32.

Malagan series

Paleozoic (Late Carbonic) : Arizona and New Mexico. 

Charles Keyes, 1940, Pan-Am. Geologist, v. 74, no. 2, p. 106 (chart).

Malam (Maremu) beds

Miocene: Caroline Islands (Kusaie).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 69, table 5 [English translation in library of U. S. Geol. Survey, p. 84].

Malartic granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey. Mem. 166, 

p. 134.

Malartic volcanics

Precambrian: Quebec, Canada.

H. C. Gunning, 1937, Canada Geol. Survey Mem. 206, p. 4-5.

Mallard Lake metagabbro

Precambrian: Ontario, Canada.

D. F. Hewitt, 1955, Ontario Dept. Mines Ann. Kept., v. 63, pt. 6, p. 14.

Mallemuk formation

See Mallemuk Mountain formation.

Mallemuk Mountain formation

Upper Carboniferous: Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 245-246.

Mamou member (of Foley formation) 

Pliocene: Louisiana (subsurface).

P. H. Jones in P. H. Jones, A. N. Turcan, Jr., and H. B. Skibitzke, 1954, La. Dept. 

Conserv. Geol. Bull. 30, p. 60-61.

Mamural clay (of Spring vale formation)

Miocene, upper: Trinidad, British West Indies.

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 205 (table 13) [1952].

Manchester schist

Precambrian: Georgia.

D. F. Hewett and G. W. Crickmay, 1937, U. S. Geol. Survey Water-Supply Paper 819, 

p. 29.

Mandata formation

Lower Devonian: Pennsylvania.

F. M. Swartz, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, pt. 2, p. 1923. 

F. M. Swartz in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. Geol. 

Survey, ser. 4, Bull. G 19, p. 65-69.
GEOLOGIC NAMES OP NORTH AMERICA INTRODUCED IN 1936-1955 225

Maness shale member (of South Tyler formation) 

Cretaceous (Comanche) : Texas (subsurface). 

T. L. Bailey, F. G. Evans, and W. S. Adkins, 1945, Am. Assoc. Petroleum Geologists

Bull., v. 29, no. 2, p. 176-178.

R. T. Hazzard, B. W. Blanpied, and W. C. Spooner, 1947, Shreveport Geol. Soc. 1945 

Ref. Kept, V. 2, p. 475, 476.

Manila agglomerate

Eocene: Mariana Islands (Rota).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc, Japan Jour., v. 46, no. 549, p. 846 (correlation table) [English translation in 

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas : Japan Hydrog. 

Office Bull., v. 11, p. 48, table 4 [English translation in library of U. S. Geol. Survey, 

p. 57].

Mannville formation 

Lower Cretaceous: Alberta, Canada (subsurface). 

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1609-1615.

Mansfield Head granodiorite

Devonian(?): Newfoundland, Canada.

H. J. MacLean, 1947, Newfoundland Geol. Survey Bull. 22, p. 8.

Mantua lentil (of Polecat Bench formation) 

Paleocene: Wyoming.

G. L. Jepsen in W. B. Scott, 1937, A history of land mammals in the Western Hemisphere : New York, Macmillan Co., p. 99; 1940, Am. PhiJos. Soc. Proc., v. 83, no. 2, 

p. 233-234.

Manville formation

See Mannville formation.

Manyberries member (of Bearpaw formation) 

Upper Cretaceous: Alberta, Canada.

D. M. Loranger and J. Gleddie, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field 

Omf. and Symposium, p. 160-161, 167.

Manzanillo formation 

Miocene: Cuba. 

Stephen Taber, 1934, Geol. Soc. America Bull., v. 45, no. 8, p. 586-588.

Manzanita limestone member (of Cherry Canyon formation) 

Permian (Guadalupe series) : Texas and New Mexico. 

F. E. Lewis, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 1, p. 92. 

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 580-581.

Map formation

Miocene: Caroline Islands (Map and Yap).

Risaburo Tayama, 1935, Topography, geology, and coral reefs of the Yap Islands: 

Tohoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no. 19, 

p. 30-36 [English translation in library of U. S. Geol. Survey, p. 26-32] ; 1952, 

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 61-62, table 4 

[English translation in library of U. S. Geol. Survey, p. 72-73],

Maple Summit sandstone

Upper Devonian (Chautauquan) : Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Rept. 126, p. 8 (footnote).

Maquam group

Middle Ordovician (Chazyan) : Vermont.

Marshall Kay and W. M. Cady, 1947. Science, v. 105, no. 2736, p. 601.
226 GEOLOGIC NAMES OF NORTH AMERICA

Mara formation

Precambrian or Paleozoic: British Columbia, Canada. 

A. G. Jones, 1948, Canada Geol. Survey Paper 48-4, p. 3.

Maracas beds

Jurassic: Trinidad, British West Indies.

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 190 [1952].

Maraval beds

Jurassic: Trinidad, British West Indies.

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 190 [1952].

Marble limestone

Precambrian (Chuaran) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 112-113.

Marble Island quartzite

Precambrian (Huronian) : Northwest Territories (Keewatin), Canada. 

J. B. Tyrrell, 1897, Canada Geol. Survey Ann. Kept., v. 9, p. 170.

Marburg schist

Precambrian (?) : Pennsylvania and Maryland.

A. I. Jonas and G. W. Stose, 1938, Washington Acad. Sci Jour., v. 28, no. 8, p. 346-347.

Marca shale member (of Moreno formation) 

Upper Cretaceous: California. 

M. B. Payne, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1954.

March formation

Lower Ordovician (Beekmantown) : Ontario, Canada.

A. B. Wilson, 1937, Royal Soc. Canada Trans., ser. 3, v. 31, sec. 4, p. 46, 52.

Maremu beds

See Malam beds.

Maretburg f acies (of Muldraugh formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 212-214.

Margrethetal series

Middle Devonian: Northeast Greenland.

Heinrich Butler, 1954, Meddel. om Gotaland, bind 116, nr. 7, p. 45-54, 93-94, 97-98, 

108, 113-114.

Maria formation

Post-Cambrian: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 25-28.

Maria plutonic complex

Paleozoic or Mesozoic: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 29-32.

Maria Creek limestone member (of Shelburn formation) 

Pennsylvanian: Indiana.

C. A. Malott, 1947, Ind. Acad. Sci. Proc., v. 57, p. 125 [1948], 

F. E. Kottlowski, 1954, U. S. Geol. Survey Coal Inv. Map C 11.

Marian group

Precambrian (Archean) : Northwest Territories (Mackenzie), Canada. 

C. S. Lord, 1939, Canada Geol. Survey Paper 39-5, p. 6-7.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 227

Mariana limestone

Pleistocene: Mariana Islands (Tinian and Saipan).

Risaburo Tayama, 1936, Geomorphology, geology, and coral reefs of Tinian Island 

together with Aguijan and Naftan Islands: Tohoku Univ., Inst. Geology and 

Paleontology Contr. in Japanese Language, no. 21, p. 26-27, 31 [English translation in library of U. S. Geol. Survey, p. 25-27, 31-32].

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. Paper 

253, p. 12-13.

Maridale formation

Cretaceous (Aptian or Albian) : Trinidad, British West Indies. 

A. G. Hutchison, 1938, Bol. Geologla y Minerla (Venezuela), v. 2, nos. 2-4 (English 

ed.), p. 232-233, 235 (table).

Marigot formation 

Paleocene: Haiti.

Jacques Butterlin, [1952], Re'sume' de these pre'sente'e a la Sorbonne, La ge'ologie de 

la Republique d'Haiti et ses rapports avec celle des regions voisines (mimeo.), p. 3; 

1954, Inst. Franfiais d'Haiti Mem. 1, p. 57.

Mariiru beds

Eocene: Mariana Islands (Rota).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. Soc. 

Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in library 

of U. S. Geol. Survey; 1952, Coral reefs in the South Seas: Japan Hydrog. Office 

Bull., v. 11, p. 49, table 4 [English translation in library of U. S. Geol. Survey, 

p. 59].

Maringouin formation

Mississippian and/or Pennsylvanian: New Brunswick, Canada. 

G. W. H. Norman, 1941, Canada Geol. Survey Map 647A.

Marino agglomerate

Eocene: Mariana Islands (Tinian).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. Soc. 

Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in library 

of U. S. Geol. Survey; 1952, Coral reefs in the South Seas: Japan Hydrog. Office 

Bull,, v. 11, p. 48, table 4 [English translation in library of TJ. S. Geol. Survey, 

p. 57].

Marino beds

Eocene: Mariana Islands (Tinian).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 51, table 4 [English translation in library of U. S. GeoL Survey, p. 61],

Marjo Canyon diorite

Age unknown: California.

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 300-301, map 1.

Markgraf member (of Joliet formation) 

Silurian (Niagaran) : Illinois. 

D. L. Graf, 1952, 111. Geol. Survey Kept. lav. 161, p. 3.

Markham Mill formation

Pennsylvanian (Bendian) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854, 

884-886.

Marlboro member (of Hudson River formation) 

Ordovician: New York. 

P. H. Bird, 1941, N. Y. Acad. Sci. Trans., ser. 2, v. 3, no. 5, p. 113-114.
228 GEOLOGIC NAMES OF NORTH AMERICA

Marmolejo formation

Lower Cretaceous: California.

N. L. Taliaferro, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 4, p. 459.

Marmorvigen conglomerate

Upper Precambrian (Greenlandian) (?) : North Greenland.

Erdhart Frankl, 1955, Meddel. om Gr0nland, bind 103, nr. 7, p. 13, 16, 32 (footnote).

Marquer formation

Pliocene, upper: Baja California, Mexico.

I. F. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p. 1768.

Marquez shale member (of Reklaw formation) 

Eocene, middle (Claiborne) : Texas. 

H. B. Stenzel, 1938, Tex. Univ. Bur. Econ. Geol. Pub. 3818, p. 20, 71-78 [1939].

Marron formation

Eocene: British Columbia, Canada.

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Marrowstone shale

Oligocene: Washington.

J. W. Durham, 1944, Calif. Univ. Dept. Geol. Sci. Bull., v. 27, no. 5, p. 104 (fig. 2), 106.

Marshall diorite

Precambrian (?) : Washington.

M. C. Schroeder, 1952, Wash. Dept. Conserv. DeveL, Div. Mines and Geology Bull. 40, 

p. 7, 21-23, pi. 1.

Marshall Bay formation

Lower Cambrian: North Greenland.

Christian Poulsen, 1940, Meddel. Dansk Geol. Foren., bind 9, hefte 5, p. 638-639, 641.

Marshall Creek breccia

Upper Cretaceous (?) : Utah.

J. H. Mackin, 1947, Utah Geol. Soc. Guidebook 2, p. 9-12.

Marsh Brook submember (of Thorburn member of Stellarton series) 

Pennsylvanian: Nova Scotia, Canada. 

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 44, 45 [1941].

Marsland formation

Miocene: Nebraska and Wyoming.

C. B. Schultz, 1938, Am. Jour. Sci., 5th ser., v. 35, no. 210, p. 443-444.

Marston member (of Mount Head formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Marten River granite

Precambrian (Archean) : Ontario, Canada.

W. G. Q. Johnston, 1954, Geol. Soc. America Bull., v. 65, no. 11, p. 1054.

Marthaville formation

Eocene (Wilcox) : Louisiana.

B. W. Blanpied and R. T. Hazzard, 1939, Shreveport Geol. Soc. Guidebook 14th Ann.

Field Trip, p. 128 (correlation chart). 

G. E. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull.,

v. 29, no. 1, p. 60-61.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 229

Martin Creek limestone

Middle Ordovician: Virginia.

R. L. Miller and W. P. Brosge, 1950, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 104.

Martin Ridge schist

Pre-Ordovician(?) : Washington.

B. A. Youngberg and T. L. Wilson, 1952, Bcon. Geology, v. 47, no. 1, p. 3.

Marvin beds

See Marvin Quarry bed.

Marvin Quarry bed

Middle Devonian: Michigan.

[G. M. Ehlers], 1938, Mich. Acad. Sci., Arts and Letters Sec. Geology and Mineralogy

I Guidebook] 8th Ann. Field Excursion, [tig. 2] after p. 8. 

W. A. Kelly, 1940, Mich. Acad. Sci., Arts and Letters Sec. Geology and Mineralogy

[Guidebook] 10th Ann. Field Excursion, [p. 1, figs. 4, 6, 7], map 1.

Marysville sand member (of Vashon drift) 

Pleistocene: Washington. 

R. C. Newcomb, 1952, U. S. Geol. Survey Water-Supply Paper 1135, p. 26, 27, pL 1.

Mascoma group

Upper Devonian (?) (Oliverian magma series) : New Hampshire.

C. A. Chapman and others, 1938, Geologic map and structure sections of the Mascoma

quadrangle, New Hampshire (1: 62,500) : N. H. Highway Dept. 

C. A. Chapman, 1939, Geol. Soc. America Bull., v. 50, no. 1, p. 143.

Mascot dolomite

Lower Ordovician : Tennessee and Virginia.

John Rodgers, 1943, Geologic map of Copper Ridge district, Hancock and Grainger

Counties, Tennessee (1:24,000) : U. S. Geol. Survey Strategic Minerals Inv. Prelim.

Map. 

C. R. L. Oder and H. W. Miller, 1945, Am. Inst. Mining and Metall. Engineers (Mining

Technology, v. 9, no. 3) Tech. Pub. 1818, p. 1, 2 (table 1).

Masef au volcanics

Pliocene (?) : Samoa Islands (Tutuila).

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1285-1288.

G. A. Macdonald, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1336-rl337.

Maskerchugg granite

Mississippian(?) : Rhode Island.

A. W. Quinn, 1952, Bedrock geology of the East Greenwich quadrangle, Rhode Island: 

U. S. Geol Survey Geol. Quadrangle Map IGQ 17].

Mata Chin formation

Cretaceous and Eocene: Panama Canal Zone.

R. T. Hill, 1898, Harvard Coll. Mus. Comp. Zoology Bull., v. 28, no. 5, p; 187-189.

Matafoa breccia

Pliocene or Pleistocene, lower: Samoa Islands (Tutuila).

R. A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 100,105,129.

Matafao trachyte

Pliocene or Pleistocene, lower: Samoa Islands (Tutuila).

R. A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 105, 129-130.

Matalanim beds

See Metalanim beds.
230 GEOLOGIC NAMES OF NORTH AMERICA

Matane shale

Lower Ordovician: Quebec, Canada.

Rudolf Ruedemann, 1937, Am. Jour. Sci., ser, 5, v. 33, p. 59, 62.

Matansa limestone

Eocene, upper: Mariana Islands (Saipan).

Risaburo Tayama, 1938, Geomorphology, geology, and coral reefs of Saipan Island : 

Tropical Industry Inst., Palau, South Sea Islands, Bull. 1 [English translation in 

library of U. S. Geol. Survey, p. 52-53].

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. Paper 

253, p. 7-8.

Matansya limestone

See Matansa limestone.

Mataranim beds

See Metalanim beds.

Mather sediments

Precambrian (Keewatin) : Ontario, Canada.

G. L. Fleteher and T. N. Irvine, 1954, Ontario Dept. Mines Ann. Kept., v. 63, pt. 5, 

p. 15.

Matthew formation

Precambrian or Lower Cambrian: British Columbia, Canada. 

A. H. Lang, 1938, Canada Geol. Survey Paper 38-16, p. 13.

Maudlow conglomerate lentil (in Livingston formation) 

Paleocene: Montana. 

W. J. McMannis, 1955, Geol. Soc. America Bull., v. 66, no. 11, p. 1410, pi. 7.

Maurice formation

Upper Cambrian: Montana.

Brling Dorf and Christina Lochman, 1938, (abs.) Geol. Soc. America Proc. 1937, 

p. 275-276.

Maverick shale

Precambrian: Arizona.

B. S. Butler and E. D. Wilson, 1938, Ariz. Bur. Mines Bull. 145, Geol. Ser. 12, pi. 3.

Max Meadows fault breccia 

Upper Paleozoic: Virginia. 

B. N. Cooper and J. C. Haff, 1940, Jour. Geology, v. 48, no. 8, pt. 2, p. 945-974.

Maya formation

See Moya formation.

Mayfleld member (of Mt. Simon formation) 

Upper Cambrian: Illinois (subsurface). 

J. S. Templeton, Jr., 1950, 111. Acad. 'Sei. Trans., v. 43, p. 155.

Mayflower Lake quartz diorite

Pre-Carboniferous : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. 'Soc. America Special Paper 5, p. 38.

May Pond member (of Littleton formation) 

Lower Devonian : New Hampshire. 

M. T. Heald, 1950, Geol. Soc. America Bull., v. 61, no. 1, p. 50-51, 70, 79.

Mayrftn formation

Pleistocene (?) : Coahuila, Mexico.

R. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1135.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 231

Mazapil conglomerate =; 

Tertiary: Zacatecas, Mexico. 

Roger Van Vloten, 1955, Leidse Geol. Meded., deel 19, p. 154.

Mazatzal granite

Precambrian: Colorado and Arizona.

N. E. A. Hinds, 1936, Carnegie Inst. Washington Pub. 463, pt. 2, p. 101.

Meach Lake conglomerate

Precambrian: Ontario, Canada.

J. B. Mawdsley, 1930, Royal Soc. Canada Trans., ser. 3, v. 24, sec. 4, p. 104-107.

Mead limestone

Middle Cambrian: Arizona.

B. T. Schenk and H. B. Wheeler, 1942, Jour. Geology, v. 50, no. 7, p. 894-896.

Meadow rhyolitic tuff 

Tertiary: Wyoming. 

R. B. Wilcox, 1944, Geol. Soc. America Bull., v. 55, no. 9, p. 1052.

Meagher facies (of Belt series)

Precambrian: Alberta, Canada; and Montana.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p. 1877.

Mealy Mountains anorthosite

Precambrian: Newfoundland (Labrador), Canada.

D. M. Baird, 1953, Newfoundland Geol. Survey Inf. Circ. 4 (revised), p. 137.

Mecca formation

Miocene: California.

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 2, p. 24.

Medicine flow

Recent: California.

H. A, Powers, 1932, Am. Mineralogist, v. 17, no. 7, p. 276, 288, pi. 1. 

Medicine Bow Peak quartzite

Precambrian: Wyoming.

W. J. Kivi and R. W. Mallory, 1940, in Kans. Geol. Soc. Guidebook 14th Ann. Field 

Conf., p. 107.

Medicine Lodge beds

Miocene (?) : Idaho and Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 369-370, pi. 1.

Medicine Lodge member (of Bearpaw formation) 

Upper Cretaceous: Alberta, Canada.

D. M. I/oranger and J. Gleddie, 1953, Alberta, Soc. Petroleum Geologosts 3d Ann. 

Field Conf. and Symposium, p. 164-165, 167.

Medicine Lodge volcanics

Oligocene, upper, to Miocene, lower: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 375-3T6, pi. 1.

Medill volcanic zone (of Eagleford formation) 

Cretaceous: Texas. 

R. T. Hazzard, 1939, Shreveport Geol. Soc. Guidebook 14th Ann. Field Trip, p. 138, 139.
232 GEOLOGIC NAMES OF NORTH AMERICA

Medinilla (Lower and Upper) limestone

Oligocene [Aquitanian]: Mariana Islands (Farallon de Medinilla). 

Risaburo Tayama, 1952, Japan Hydrog. Office Bull., v. 11, table 4. '

Medusa member (of Pecatonica formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 10, 16.

Meek group

Pennsylvanian: Wyoming and Colorado.

G. B. Condra, B. C. Reed, and O. J. Seherer, 1940, Nebr. Geol. Survey Bull. 13, 

p. 2, 3, 22, 44.

Meetinghouse slate

Middle Ordovician (?) : Vermont and New Hampshire. 

C. G. Doll, [1945?], Vt. State Geologist 24th Rept, p. 19.

Mejas beds or limestone 

See Mejias limestone.

Mejias limestone

Oligocene: Trinidad, British West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1580 (chart).

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, table facing p. 572.

Melajo clay

Pleistocene : Trinidad, British West Indies.

H. G. Kugler, 1950, AsociaciSn Venezolano de Geolgfa, Minerfa y PetrOleo Bol., tomo 2, 

no. 1, p. 48 (correlation chart), 74.

Melbourne limestone

Lower Cambrian : Quebec, Canada.

H. C. Cooke, 1954, Geol. Assoc. Canada Proc., v. 6, pt. 2, p. 40-41.

Melita formation ' 

Upper Jurassic: Manitoba, Canada; and North Dakota. 

D. F. Stott, 1955, Manitoba Dept. Mines and Nat. Res. Pub. 54-2, p. 22-25, 37, 45-47.

Melville formation

Pateoeene: Montana.

G. G. Simpson, 1937, U. S. Natl. Mus. Bull. 169, p. 25.

Memramcook formation

Mississippian: New Brunswick, Canada.

G. W. H. Norman, 1941, Canada Geol. Survey Map 647A.

Menan tuff

Pleistocene: Idaho.

H. T. Stearns, Lynn Crandall, and W. G. Steward, 1938, U. S. Geol. Survey WaterSupply Paper 774, pi. 4 (geol. map).

Menchaca limestone

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 123.

Menihek formation

Precambrian (Proterozoic) : Quebec and Newfoundland (Labrador), Canada. 

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 13.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 233

Mercersburg formation

Middle Ordovician: Pennsylvania.

L. C. Craig, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1964.

Merchiston formation

Cretaceous (?) : Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 823, 828.

Mercy sandstone lentil (in Tierra Loma shale member of Moreno formation) 

Upper Cretaceous: California. 

M. B. Payne, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1954.

Meriwitica tongue

Lower and/or Middle Cambrian: Arizona.

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 80-82.

Merizo limestone

Recent: Mariana Islands (Guam).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 58-59, table 4 [English translation In library of U. S. Geol. Survey, 

p. 69].

Mermentau member (of Le Moyen formation) 

Recent: Louisiana (subsurface and surface).

P. H. Jones in P. H. Jones, A. N. Turcan, Jr., and H. E. Skibitzke, 1954, La. Dept. 

Conserv. Geol. Bull. 30, p. 90-94.

Merrimac granodiorite

Late Jurassic (?) : California.

Anna Hietanen, 1951, Geol. Soc. America Bull., v. 62, no. 6, p. 583, o84, pi. 1.

Mesa formation

Upper Mesozoic or Tertiary, lower : Sonora, Mexico.

W. G. Valentine, 1936, Geol. Soc. America Bull., v. 47, no. 1, p. 74-76.

Mesa Rica sandstone member (of Purgatoire formation) 

Lower Cretaceous: New Mexico.

Ernest Dobrovolny and C. H. Summerson, 1946, U. S. Geol. Survey Oil and Gas Inv. 

Prelim. Map 62, sheet 1.

Mescaleran series

Paleozoic (Late Carbonic) : Arizona and New Mexico. 

Charles Keyes, 1940, Pan-Am. Geologist, v. 74, no. 2, p. 306 (chart).

Meseta Blanca sandstone member (of Yeso formation) 

Permian: New Mexico.

G. H. Wood and S. A. Northrop, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 57.

Mesillan series

Paleozoic (Mid-Siluric) : New Mexico.

[C. R.] Keyes, 1942, Pan-Am. Geologist, v. 77, no. 4, p. 319.

Mesquite schist

Precambrian (?) : California.

T. W. Dibblee, Jr., 1952, Calif. Dept. Nat. Res., Div. Mines Bull. 160, p. 14.

Metacom granite-gneiss

Pre-Carboniferous: Rhode Island.

A. W. Quinn and G. H. Springer, 1954, U. S. Geol. Survey Geol. Quadrangle 

Map GQ 42.
234 GEOLOGIC NAMES OF NORTH AMERICA

Metalanim (Matalanim) beds

Miocene: Caroline Islands (Ponape).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol.

Soc. Japan Jour., v. 46, no. 549, p. 347 (correlation table) [English translation In

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan Hydrog.

Office Bull., v. 11, p. 69, table 5 [English translation In library of U. S. Geol. Survey,

P. 84].

Metaline limestone formation

Middle Cambrian: Washington.

C. P. Park, Jr., 1938, Beon. Geology, v. 33, no. 7, p. 713, 714 (fig. 2). 

C. F. Park, Jr., and R. S. Cannon, Jr., 1943, U. S. Geol. Survey Prof. Paper 202, 

p. 6, 17-19, pi. 1.

Methow gneiss

Age uncertain (pre-Chelan batholith) : Washington.

J. D. Barksdale, 1948, Northwest Science, v. 22, no. 4, p. 165,166-167.

Metis shale

Lower Ordovician: Quebec, Canada.

C. D. Walcott, 1920, Smithsonian Misc. Coll., v. 67, no. 6, p. 267-268.

Metralla sandstone member (of Tejon formation) 

Eocene: California. 

J. G. Marks, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1922.

Mexicana stage

Quaternary: Mexico.

A. R. V. Arellano, 1953, Congreso Cient. Mexicano Mem., tomo 3, p. 182, 186.

Mezcal beds

Lower Cretaceous: Michoacan, Mexico.

E. J. Guzman, 1950, AsociaciOn Mexicana 'GeOlogos Petroleros Bol., v. 2, no. 2, strat. 

columns.

Midas formation

Precambrian and/or Cambrian: British Columbia, Canada. 

S. S. Holland, 1954, British Columbia Dept. Mines Bull. 34, p. 19-22.

Midas limestone member (of Midas formation)

Precambrian and/or Cambrian: British Columbia, Canada. 

S. S. Holland, 1954, British Columbia Dept. Mines Bull. 34, p. 22.

Midco (lacustrine) member (of Wellington formation) 

Permian: Oklahoma. 

G. 0. Raasch, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1928.

Midden-Curagao beds

Upper Cretaceous or Paleocene: Curacao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologie en geohydrologie van het Eiland Curacao: Delft, 

J. Waltman, Jr., p. 23-25, 56.

Middlebury limestone

Middle Ordovician (Chazyan) : Vermont.

W. M. Cady, 1945, Geol. Soc. America Bull., v. 56, no. 5, p. 524, 552-554.

Middle Creek limestone ledge (in Graneros formation) 

Cretaceous: South Dakota. 

M. E. Wing, 1940, S. Dak. State Geol. Survey Rept. Inv. 35, p. 6, chart facing p. 10.

Middle Curagao beds

See Midden-Curagao beds.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 235

Middle River group

Silurian or Lower Devonian: Nova Scotia, Canada. 

L. J. Weeks, 1954, Canada Geol. Survey Mem. 277, p. 57-62.

Midnight Peak formation

Upper Cretaceous: Washington.

J. D. Barksdale, 1948, Northwest Science, v. 22, no. 4, p. 165, 173-174.

Midridge limestone

Lower Mississippian (Kinderhook) : Utah.

C. S. Bacon, Jr., 1948, Geol. Soc. America Bull., v. 59, no. 10, p. 1037, fig. 2.

Miette member (of Minnewanka formation) 

Devonian: Alberta, Canada. 

E. M. Kindle, 1929, Am. Jour. Sci., ser. 5, v. 18, p. 180-181.

Mifflin member (of Platteville formation) 

Middle Ordovician: Wisconsin. 

C. A. Bays, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 269.

Milan limestone member (of Wellington formation) 

Permian: Kansas.

G. H. Norton, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, p. 1557; 

1939, v. 23, no. 12, p. 1757-1759.

Mildale gabbro

Precambrian (Archean) : Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Kept. 255, p. 11.

Mile End formation

Middle Ordovician (Trenton) : Quebec, Canada.

T. H. Clark, 1944, Royal Soc. 'Canada Trans., sec. 4, v. 38, p. 29; 1952, Quebec Dept. 

Mines Geol. Rept. 46, p. 63-64.

Miles Canyon basalts

Tertiary: Yukon, Canada.

J. O. Wheeler, 1952, Canada Geol. Survey Paper 52-30, p. 8-9.

Milk Creek beds

Pliocene, lower or middle: Arizona.

C. O. Reed, 1950, Plateau, v. 22, no. 4, p. 75-76.

Milkish Head granite and granodiorite

Pre-Carboniferous: New Brunswick, Canada.

A. 0. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 38-39.

Mill member (of Red Rose formation)

Upper Jurassic and Lower Cretaceous: British Columbia, Canada.

R. B. Sommers, 1955, British Columbia Bur. Mines Ann. Rept. 1954, p. A89-A90.

Millard limestone

Middle Cambrian: Utah.

H. E. Wheeler, 1948, Nev. Univ. Bull., Geology and Mining Ser., no. 47, p. 35-36.

Millboro shale

Middle and Upper Devonian : Virginia.

B. N. Cooper, 1939, Va. Geol. Survey Bull. 55, p. 42-44.

Charles Butts, 1940, Va. Geol. -Survey Bull. 52, pt. 1, p. 308-314.

426779 57 16
236 GEOLOGIC NAMES OF NORTH AME'RICA

Mill City glacial stage 

Pleistocene: Oregon. 

T. P. Thayer, 1939, Oreg. State Dept. Geology and Mineral Res. Bull. 15, p. 20, 21-23,

Miller Lake porphyry

Precanibrian: Ontario, Canada.

A. N. Miller, 1938, Canadian Mining Jour., v. 59, no. 11, p. 608.

Miller Mountain formation

Lower Cambrian: Nevada.

H. G. Ferguson, S. W. Muller, and S. H. Cathcart, 1954, U. S. Geol. Survey Geol. 

Quadrangle Map GQ 45.

Millersville cyclothem (including Millersville limestone) 

Pennsylvanian: Illinois.

E. F. Taylor and G. H. Cady, 1944, 111. State Geol. Survey Rept. Inv. 93, p. 22-24. 

H. R. Wanless, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 9, p. 1764 

(table 2).

Millerton porphyry

Precanibrian: Ontario, Canada.

J. Blackshaw, 1943, Canadian Inst. Mining and Metallurgy Trans., v. 46, p. 227.

Mills formation

Upper Cretaceous (Chico) : California.

J. M. Kirby, 1942, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 26, no. 5, p. 899; 

1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 606.

Millsite flow (in Yellowknife group)

Precanibrian: Northwest Territories (Mackenzie), Canada. 

C. E. G. Brown and A. >S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans., 

v. 56, p. 70-71.

Mill Street conglomerate (of Woodhill member of Franconia formation) 

Upper Cambrian: Minnesota.

C. A. Nelson, 1951, Jour. Paleontology, v. 25, no. 6, p. 774. 

R. R. Berg, 1954, Geol. Soc. America Bull., v. 65, no. 9, p. 869-870.

Milneland granite

Lower Paleozoic (Caledonian) : East Greenland.

Herman Aldinger, 1935, Meddel. om Gr0nland, bind 99, nr. 1, p. 54, pi. 3.

Milne Land quartzite

Age unknown : East Greenland.

Alfred Rosenkrantz in Lauge Koch, 1929, bind 73, afd. 2, nr. 1, p. 139.

Milo tongue (of West River shale) 

Upper Devonian : New York. 

W. L. Grossman, 1944, Geol. Soc. America Bull., v. 55, no. 1, p. 65-66.

Mirnbres conglomerate

Miocene (?) to Pliocene: New Mexico.

R. M. Hernon, W. R. Jones, and S. I*. Moore, 1953, N. Mex. Geol. 'Soc. Guidebook 4th 

Field Conf., p. 118 (map), 120.

Mimbres Peak formation

Tertiary, upper: New Mexico.

F. J. Kuellmer and others, 1953, in N. Mex. Geol. Soc. Guidebook 4th Field Conf., p. 42

(map), 47, 50 (map). 

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Res., Bull. 37, p. 39, 45-47.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 237

Miminiska series

Precambrian: Ontario, Canada.

V. K. Prest, 1944, Ontario Dept. Mines Ann. Kept, v. 51, pt. 3, p. 5-7.

Mina Grande formation 

Permian: Texas.

C. C. Rix, 1953, in W. Tex. Geol. Soc. [Guidebook] Spring Field Trip, May 28-30, 

p. 5, 14, 15.

Minaville member (of Canajoharie formation) 

Middle Ordovician (Mohawkian) : New York. 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 268-270.

Minco division

Permian: Oklahoma and Kansas.

D. A. Green, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, p. 1521-1525.

Hindi Hill beds

Eocene: Panama Canal Zone.

R. T. Hill, 1898, Harvard Coll. Mus. Comp. Zoology Bull., v. 28, no. 5 p. 180-181, 236.

Mine Creek cyclothem (including Mine Creek shale)

Pennsylvanian (Des Moines) : Kansas, Missouri, and Nebraska. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 318-320; 1945, 

Bull. 58, p. 32-34, 65.

Mineral cyclothem or formation

Pennsylvanian (Des Moines) f Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 

22; 1938, Kans. Geol. Soc. Trans., v. 41, p. 193, 195.

Mineral Bluff formation 

Cambrian: Georgia. 

V. J. Hurst, 1955, Ga. Geol. Survey Bull. 63, p. 55-56.

Mineral Fork tillite 

Precambrian: Utah. 

A. E. Granger and others, 1952, Utah Geol. Soc. Guidebook 8, p. 4-6.

Minersville shale member (of Friedrich formation) 

Pennsylvanian (Virgil) : Nebraska and Iowa. 

G. E. Condra and E. C. Reed, 1938, Nebr. Geol. Survey Paper 12, p. 9.

Mingo River formation

Lower Ordovician: Northwest Territories (Devon Island), Canada. 

V. E. Kurtz, A. H. McNair, and D. B. Wales, 1952, Am. Jour. Sci., v. 250, no. 9, 

p. 645-646.

Mings Bight formation

Ordovician(?): Newfoundland, Canada.

K. D. Watson, 1947, Newfoundland Geol. Survey Bull. 21, p. 10.

Mining Mountain granite gneiss 

Precambrian: Ontario, Canada. 

D. F. Hewitt, 1954, Ontario Dept. Mines Ann. Rept., v. 62, pt. 5, p. 27.

Mink Creek conglomerate

Pliocene: Idaho and Utah.

R. D. Adamson, C. T. Hardy, and J. Stewart Williams, 1955, Utah Geol. Soc. Guidebook 10, p. 2, 7-8.
238 GEOLOGIC NAMES OF NORTH AMERICA

Minnechaduza beds (in Ash Hollow formation) 

Pliocene (Ogallala) : Nebraska.

R. A. Stirton, 1939, Am. Jour. Sci., v. 237, no. 6, p. 433.

M. K. Blias, 1942, Geol. Soc. America Special Paper 41, p. 142.

Minneiska member (of Franconia formation) 

Upper Cambrian (St. Croixian) : Minnesota.

C. R. Stauffer, G. M. Schwartz, and G. A. Thiel, 1938, (abs.) Geol. Soc. America 

Bull., v. 49, no. 12, pt. 2, p. 1902 ; 1939, v. 50, no. 8, p. 1239.

Minto basalts

Pliocene to Pleistocene: Oregon.

T. P. Thayer, 1936, Jour. Geology, v. 44, no. 6, p. 705, 709 (fig. 2), 713 (fig. 3).

Minto formation

Pennsylvanian : New Brunswick, Canada.

J. B. Muller, 1949, Canada Geol. Survey Paper 49-13 (Prelim. Map 49-13A).

Minturn formation

Pennsylvanian and Permian (?) : Colorado.

Ogden Tweto, 1949, Colo. Sci. Soc. Proc., v. 15, no. 4, p. 152, 194-198, 205-206.

Minwah limy gneiss

Cambro-Ordovician(?) : Maine.

L. W. Fisher, 1936, Am. Mineralogist, v. 21, IM>. 5, p. 323.

Miraflores basalt

Miocene, lower: Panama Canal Zone. *

[T. F. Thompson], 1943, Panama Canal, Special Bng. Div., 3d Locks Proj., pt. 2,

chap. 3, p. 26. 

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, table 2.

Miroflores pumice

Pre-Eocene: Panama Canal Zone.

R. T. Hill, 1898, Harvard Coll. Mus. Comp. Zoology Bull., v. 28, no. 5, p. 198-199, 

209.

Mirikattan limestone

Recent: Mariana Islands (Rota).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands : Geol. 

Soc. Japan Jour., v. 46, no 549, p. 346 (correlation table) [English translation in 

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan Hydrog. 

Office Bull., v. 11, p. 58, table 4 [English translation in library of U. S. Geol. Survey, 

p. 69].

Misopfi shales

Oligocene : Tabasco and Chiapas, Mexico.

G. P. Salas and Ernesto Lopez Ramos, 1950, AsociaciOn Mexicana GeOlogos Petroleros 

Bol. v. 3, nos. 1-2, p. 30-31.

Missisquoibay series

Cambrian and Ordovician : Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2,

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping,

Qhina, University Press, Natl. Univ. Peking, p. 364.

Missler member (of Meade formation) 

Pleistocene: Kansas. 

C. W. Hibbard, 1949, Mich. Univ. Mus. Paleontology Contr., v. 7, no. 4, p. 67-68.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 239

Mitchell Mesa rhyolite 

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, 

pt. 2, p. 1197 ; 1949, v. 60, no. 7, p. 1161-1162.

Mitre Peak complex

Tertiary, lower: Texas.

R. L. Ives, 1941, Am. Jour. Sci., v. 239, no. 5, p. 346-348, 351-352.

Mixtepec-El Consuelo beds

Lower Jurassic: Oaxaca, Mexico.

G. P. Salas, 1949, AsociaciOn Mexicana GeOlogos Petroleros Bol., v. 1, no. 2, p. 92-97.

Mobridge member (of Pierre shale) 

Upper Cretaceous: South Dakota. 

W. V. Searight, 1937, S. Dak. State Geol. Survey Kept. Inv. 27, p. 44-49, pi. 3.

Moccasin Gap member (of Unicoi formation) 

Lower Cambrian: Tennessee. 

H. W. Ferguson and W. B. Jewell, 1951, Tenn. Div. Geol. Bull. 57, p. 22-23.

Moccasin Springs formation

Middle Silurian (Niagaran) : Missouri, Oklahoma, and Illinois. 

H. A. Lowenstam, 1949, 111. State Geol. Survey Kept. Inv. 145, p. 16-18.

Moenave formation

Upper Triassic(?) : Arizona.

G. A. Williams, 1954, U. S. Geol. Survey Trace Elements Inv. Kept. TEI-440, p. 34. 

Paul Averitt and others, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 12, 

p. 2517, 2519.

Moisie series

Precambrian (Grenville) : Quebec, Canada.

H. R. Hogan, 1954, (abs.) Canadian Mining Jour., r. 75, no. 6, p. 104.

Mokelumne formation 

Permian: California. 

N. L. Taliaferro, 1951, Calif. Dept. Nat. Res., Div. Mines Bull. 154, pi. 1.

Mokuone member (of Makaweli formation) 

Pliocene (?) : Hawaiian Islands (Kauai). 

G. A. Macdonald, D. A. Davis, and D. C. Cox, 1954, Volcano Letter 526, p. 2.

Molalla formation 

Pliocene: Oregon.

E. M. Baldwin, 1950, Geol. Soc. Oreg. Country News Letter, v. 16, no. 11, p. 92. 

W. D. Lowry and E. M. Baldwin, 1952, Geol. Soc. America Bull., v. 63, no. 1, p. 13-14, 

pi. 2.

Moleen formation

Lower Pennsylvanian (Springeran-Atokan) : Nevada.

R. H. Dott, Jr., 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 11, p. 2234-2243, 

fig. 2.

Molly Gibson formation

Lower Cretaceous: Arizona.

A. A. Stoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 297 (table) ; 1949, 

Geol. Soc. America Mem. 38, p. 30-31.

Monach formation

Upper Jurassic or Lower Cretaceous: British Columbia, Canada. 

W. H. Matthews, 1947, British Columbia Dept. Mines Bull. 24, p. 11-12.
240 GEOLOGIC NAMES OF NORTH AMERICA

Monahans formation 

Quaternary: Texas. 

R. M. Hufflngton and C. C. Albritton, Jr., 1941, Am. Jour. Sci., v. 239, no. 5, p. 329-331.

Monarch glacial stage

Pleistocene (upper Wisconsin) : Colorado.

R. L. Ives, 1937, (abs.) Colo. Univ. Studies, v. 25, no. 1, p. 75; 1938, Geol. Soc. 

America Bull., v. 49, no. 7, p. 1060.

Monastery formation

Lower Cambrian: Vermont.

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 42-49, 116.

Monck Lake leuco-granite gneiss 

Precambrian: Ontario, Canada. 

Jack Satterly and D. F. Hewitt, 1955, Ontario Dept. Mines Geol. Circ. 2, p. 5.

Moncrief member (of Wasatch formation) 

Eocene, lower: Wyoming. 

R. P. Sharp, 1948, Jour. Geology, v. 56, no. 1, p. 1-2.

Moncton group

Mississippian: New Brunswick, Canada.

J. S. Stewart, 1941, Canada Geol. Survey Map 604A.

Mongeant limestone member (of Saint Bartholomew formation) 

Eocene, middle: St. Bartholomew, French West Indies. 

R. A. Christman, 1953, Geol. Soc. America Bull., v. 64, no. 1, p. 69.

Mono Craters obsidian

Pleistocene: California.

W. C. Putnam, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1939.

Monos beds

Upper Pennsylvanian: Sonora, Mexico.

Charles Schuchert, 1935, Historical geology of the Antillean-Caribbean region: New

York, John Wiley and Sons, p. 138.

Montana Peak formation 

Cenozoic(?) : Arizona. 

B. P. Webb and K. C. Coryell, 1954, U. S. Atomic Energy Comm. RME-2009, p. 7, pi. 1.

Mont Celsius series

Devonian: Northeast Greenland.

Heinrich Butler, 1935, Naturf. Gesell. Schaffhausen Mitt., Heft 12, p. 26-29, fig. 4.

Montediablan stage

Pliocene, early: California.

D. E. Savage, 1955, Calif. Univ. Pubs. Geol. Sci., v. 31, no. 1, p. 19-24.

Monteith formation

Upper Jurassic or Lower Cretaceous: British Columbia, Canada. 

W. H. Matthews, 1947, British Columbia Dept. Mines Bull. 24, p. 10-11.

Montezuma formation

Pleistocene: California.

C. E. Weaver, 1949, Geol. Soc. America Mem. 35, p. 16 (table 3), 103-106.

Montgomery formation

Pleistocene: Louisiana.

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 160-163.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 241

Mont Hogbom series

Upper Devonian: Northeast Greenland.

Henrich Butler, 1935, Naturf. Gesell. Schaffhausen Mitt., Heft 13, p. 5.

Montreal formation

Middle Ordovician (Trenton) : Quebec, Canada.

T. H. Clark, 1944, Royal Soc. Canada Trans., sec. 4, v. 38, p. 29 ; 1952, Quebec Dept. 

Mines Geol. Bept. 46, p. 65.

Montserrat sand member (of Upper Brasso formation) 

Miocene: Trinidad, British West Indies. 

Ernst Lehner, 1935, [France] Office national des combustibles liquides Annales,

10e anmte, no. 4, p. 700, 716 (table). 

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull.,

v. 20, no. 59, p. 54.

Moon Hill quartzite member (of Skookum formation)

Precambrian: Washington.

M. C. Scbroeder, 1952, Wash. Dept. Conserv. Devel., Div. Mines and Geology Bull. 40, 

p. 9, 13-14.

Moore formation

Pennsylvanian (Atokan) : Oklahoma (subsurface). 

R. R. Wheeler, 1947, World Oil, v. 127, no. 7, p. 156, 161.

Moore Hill formation

Middle Ordovician (Black River) : Ontario, Canada.

V. J. Okulitch, 1939, Royal Canadian Inst. Trans., v. 22, pt. 2, p. 329-331.

Moorehouse member (of Onondaga limestone) 

Middle Devonian : New York. 

W. A. Oliver, Jr., 1954, Geol. Soc. America Bull., v. 65, no. 7, p. 628-629, 637.

Mooring Cove volcanics

Ordovician (?) : Newfoundland, Canada.

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

Mooringsport formation

Lower Cretaceous (Comanche series) : Subsurface in Arkansas, Louisiana,

and Texas. 

B. W. Imlay, 1940, Ark. Geol. Survey Inf. Circ. 12, p. 36-37.

Moose Jaw group

Devonian: Subsurface in Saskatchewan and Manitoba, Canada.

J. R. Ower, 1952, Oil in Canada, v. 5, no. 1, p. 54; 1953, Canadian Inst. Mining and 

Metallurgy Trans., v. 56, p. 395.

Moose Lake conglomerate

Precambrian (Knife Lake) : Minnesota.

J. T. Stark and V. G. Sleight, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1032 

(table 2), 1038 (fig. 4).

Moose Lake granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 128-129.

Moose Mountain member (of Kootenay formation) 

Lower Cretaceous: Alberta, Canada. 

H. H. Beach, 1943, Canada Geol. Survey Mem. 236, p. 37.
242 GEOLOGIC NAMES OF NORTH AMERICA

Moose River formation

Lower and Middle Devonian : Ontario, Canada.

A. B. Wilson, J. S. Stewart, and J. F. Caley, 1941, Royal Soc. Canada Trans., ser. 3, 

V. 35, sec. 4, p. 169.

Moqui member (of Moenkopi formation) 

Lower Triassic: Arizona. 

E. D. McKee, 1954, Geol. Soc. America Mem. 61, p. 18, 19.

Morales caliche

Pleistocene: Cuenca de Mexico, Mexico.

Kirk Bryan, 1948, Soc. Geol. Mexicana Bol., tomo 13, p. 12, pi. 1.

Moravian Heights formation

Precambrian: Pennsylvania.

B. L. Miller, 1939, Pa. Geol. Survey, ser. 4, Bull. G 16, p. 6.

D. M. Fraser in B. L. Miller, D. M. Fraser, and R. L. Miller, 1939, Pa. Geol. Survey, 

ser. 4, Bull. C 48, p. 170-175.

Morcate formation

Oligocene, lower: Cuba.

Jorge Brodermann, 1949, Soc. Cubana Ingenieros Rev., v. 48, no. 3, chart facing p. 330.

Moreau gravels

Pleistocene (pre-Wisconsin) : South Dakota.

J. C. Mickelson and C. L. Baker, 1950, Areal geology of the Mouth of Moreau quadrangle [geol. map, 1: 62,500] : S. Dak. Geol. Survey.

Morehead facies (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 177-191.

Morehouse formation

Pennsylvanian ( ?) : Subsurface in Louisiana and Arkansas. 

R. W. Imlay, 1940, Ark. Geol. Survey Inf. Circ. 12, p. 7-8.

Moretown formation

Ordovician: Vermont.

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 116, 117.

Morgan Creek limestone member (of Wilberns formation) 

Upper Cambrian: Texas.

Frederick Romberg and V. E. Barnes, 1944, Geophysics, v. 9, no. 1, p. 88. 

P. E. Cloud, Jr., V. E. Barnes, and Josiah Bridge, 1946, Tex. Univ. Bur. Econ. Geology 

Pub. 4301, p. 149, 155 [1945].

Morgan Lewis beds (in Scotland formation)

Eocene, lower: Barbados, British West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1553.

M0rkebjerg formation

Upper Precambrian (Greenlandian) : Northeast Greenland.

H. R. Katz, 1954, Meddel. om Gr0nland, bind 72, afd. 2, nr. 4, p. 51-54, 59-61.

Morne Daniel gravel series

Pleistocene: Dominica, British West Indies.

J. W. W. Spencer, 1902, Geol. Soc. London Quart. Jour., v. 58, pi. 3, p. 348. 

F. R. C. Reed, 1921, Geology of the British Empire : London, Edward Arnold and Co., 

p. 170; 1949, 2d ed., p. 252.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 243

Morne Delmas formation 

Miocene: Haiti.

Jacques Butterlin, 1950, Rev. Soc. Haitienne Hlstoire, Geographic et Geologic, v. 21, 

no. 76, p. 56; 1954, Inst. Frangais d'Haiti Mem. 1, p. 65.

Morne Diablo beds

Oligocene: Trinidad, British West Indies.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., J. P.

MacGowan, p. 458-459.

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1444-1445, 

1451 (chart).

Morne Roche beds

Eocene, upper: Trinidad, British West Indies.

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1451 

(chart) ; 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 42, 45.

Morne Vent limestone

Oligocene, upper: Martinique, French West Indies.

Jean Giraud, 1918, Esquisse gfiologique de la Martinique avec carte gGologique : HanoiHaiphong, Imprimerie d'Extrfime-Orient, p. 12. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1596.

Moroni formation

Tertiary, middle or upper: Utah.

S. L. Schoff, 1938, Ohio State Univ. Abs. Doctors' Dissert. 25, p. 381.

Morrison formation

Cambrian and older (?) : Nova Scotia, Canada.

L. J. Weeks, 1947, Canada Geol. Survey Paper (Prelim. Map) 47-17.

Morrison River formation

Lower Cambrian: Nova Scotia, Canada.

Nova Scotia Department of Mines Engineering Staff, [1950?], Geology of Nova Scotia :

Halifax, Nova Scotia, p. 7. ' 

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 34-36.

Morro member (of Palliser formation) 

Upper Devonian: Alberta, Canada. 

R. deWit and D. J. McLaren, 1950, Canada Geol. Survey Paper 50-23, p. 6.

Morses Line slate

Lower Ordovician: Vermont.

Phillip Fowler, 1950, Vt. Geol. Survey Bull. 2, pi. 1.

A. B. Shaw, 1951, Jour. Paleontology, v. 25, no. 1, p. 98.

Mortimer member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 33, fig. 3.

Morton granite gneiss

Precambrian: Minnesota.

G. A. Thiel and C. E. Dutton, 1935, Minn. Geol. Survey Bull. 25, p. 88-94, pi. 5.

E. H. Lund, 1953, Econ. Geology, v. 48, no. 1, p. 46-52.

Morton shale

Pennsylvanian (Virgilian) : Nebraska, Iowa, and Kansas.

G. E. Condra and E. C. Reed, 1943, Nebr. Geol. Survey Bull. 14, p. 41-42, 43, 44.
244 GEOLOGIC NAMES OF NORTH AMERICA

Mortons volcanics

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 7-8.

Moses Hill beds

Upper Cambrian to Lower Ordovician (Ozarkian) : New York.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 518.

Mosherville sandstone member (of Gailor dolomite) 

Lower Ordovician: New York. 

D. W. Fisher and G. F. Hanson, 1951, Am. Jour. Sci., v. 249, no. 11, p. 806.

Mosley Hill formation

Oligocene (Vicksburg) : Louisiana.

G. E. Murray, 1952, Am. Assoc. Petroleum Geologists Bull., v. 36, no. 4, p. 703-706.

Moss Back member (of Chinle formation) 

Upper Triassic: Utah and Colorado.

J. H. Stewart and J. F. Smith, Jr., 1954, Intermountain Assoc. Petroleum Geologists 

[Guidebook] 5th Ann. Field Con., p. 29, 31, 32.

Mossman picritic basalt

Pleistocene (?) : Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 230, 247-249.

Mossy Ridge lentil (of Verda member of Yazoo clay) 

Eocene, upper: Louisiana. 

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 78, 103-104.

Motherlode series

Precambrian: British Columbia, Canada.

R. A. McGuire, 1941, The Miner, v. 14, no. 10, p. 58.

Moulton sandstone member (of Oakville formation) 

Miocene: Texas. 

B. C. Renick, 1936, Tex. Univ. Bur. Econ. Geology Bull. 3619, p. 77, 78-79, table 1.

Moulton Hill granite

Ordovician or Silurian : Quebec, Canada.

R. C. Rowe, 1944, Canadian Mining Jour., v. 65, no. 1, p. 4 (map).

Mound Ridge member (of Oneota formation) 

Lower Ordovician: Wisconsin. 

G. O. Raasch, 1952, 111. Acad. Sci. Trans., v. 45, p. 87-88, 92.

Mountain Meadows dacite porphyry

Mesozoie or younger (pre-middle Miocene) : California.

A. O. Woodford, J. S. Shelton, and T. G. Moran, 1944, U. S. Geol. Survey Oil and Gas

Inv. Prelim. Map 23. 

J. S. Shelton, 1955, Geol. Soc. America Bull., v. 66, no. 1, p. 54, pi. 1.

Mountain Spring volcanics

Jurassic: California.

G. R. Heyl and J. H. Eric, 1948, Calif. Dept. Nat. Res., Div. Mines Bull. 144, pt. 1, p. 52, 

53, pi. 7.

Mount Alexander series

Middle Silurian: Quebec, Canada.

H. W. McGerrigle, 1950, Quebec Dept. Mines Geol. Rept. 35, p. 24, 25.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 245-

Mount All beds (in Scotland formation)

Eocene, middle: Barbados, British West Indies.

A. B. Thompson, 1925, Oil field exploration and development, v. 1, Oil field principles:

New York, N. Y., D. Van Nostrand Co., p. 395. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1557-1558,

1581.

Mount Aylmer granite

Devonian or younger: Quebec, Canada.

T. H. Clark in H. C. Cooke and T. H. Clark, 1937, Canada Geol. Survey Mem. 211, 

p. 75.

Mt. Barren metamorphic complex

Post-Middle Ordovician: Newfoundland, Canada.

J. R. Cooper, 193'6, Newfoundland Geol. Survey Bull. 4, p. 17, 22.

Mount Belknap rhyolite

Tertiary: Utah.

Eugene Callagban, 1939, Am. Geophys. Union Trans. 20th Ann. Meeting, pt. 3, 

p. 447-449.

Mount Dillon formation

Cretaceous (?) : Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. iSoc. America Bull., v. 59, no. 8, p. 809-810.

Mount Disraeli group

Precambrian or Paleozoic: Northwest Territories (Ellesmere Island),

Canada. 

R. G. Blackadar, 1954, Canada Geol. Survey Paper 53-10, p. 8, 10.

Mount Edgar limestone

Lower Permian: California.

J. C. Hazzard, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 240.

Mt. Elden formation

Upper Devonian: Arizona.

Louis Hussakof, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1988; 

1942, Am. Mus. Novitates, no. 1186, p. 1-2.

Mt. Emmons volcanics 

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Kept. 2, pt. 2, pi. 2 (geol. map).

Mt. Evans quartz monzonite 

Precambrian: Colorado.

M. F. Boos and Esther Aberdeen, 1940, Geol. Soc. America Bull., v. 51, no. 5, 

p. 725, pi. 1.

Mount Greenock formation 

See Greenock formation.

Mt. Hague volcanics

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Rept. 2, pt. 2, pi. 2 (geol. map).

Mount Harris beds (of Pointe-a-Pierre formation)

Eocene, lower or middle: Trinidad, British West Indies.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., 

J. P. MacGowan, p. 446-447.
246 GEOLOGIC NAMES OF NORTH AMEfRICA

Mount Hawk formation

Upper Devonian: Alberta, Canada.

R. deWit and D. J. McLaren, 1950, Canada Geol. Survey Paper 50-23, p. 5.

Mount Head formation

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Mount Hillaby beds

Eocene: Barbados, British West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1584.

Mount Hoffmann complex

Pleistocene to Recent (?) : California.

C. A. Anderson, 1941, Calif. Univ. Dept. Geol. Sci. Bull., v. 25, no. 7, p. 365-367.

Mount Hole granodiorite

Cretaceous: California.

E. S. Larsen, Jr., and N. B. Keevil, 1947, Geol. Soc. America Bull., v. 58, no. 6,

p. 489-490. 

E. S. Larsen, Jr., 3948, Geol. Soc. America Mem. 29, p. 89-90.

Mt. Hood lavas

Pliocene and Pleistocene: Oregon.

W. D. Lowry and E. M. Baldwin, 1952, Geol. Soc. America Bull., v. 63, no. 1, pt. 2.

Mount Hybla group

Eocene, lower: Jamaica, British West Indies.

C. A. Matley, 1929, Geol. 'Soc. London Quart. Jour., v. 85, pt. 4, p. 451, 452.

Mount Ida group

Precambrian or Paleozoic: British Columbia, Canada. 

A. G. Jones, 1948, Canada Geol. Survey Paper 48-4, p. 2.

Mountignais formation

Precambrian: Newfoundland (Labrador), Canada. 

E. H. Kranck, 1953, Canada Geol. Survey Bull. 26, p. 37.

Mt. Jefferson sandstone member (of Rockfish conglomerate) 

Age not stated: Virginia. 

H. B. Cooke, Jr., 1952, (abs.) Va. Jour Sci., v. 3, new ser., no. 4, p. 336.

Mount Kate volcanics 

Pliocene: Nevada. 

V. P. Gianella, 1934, Mining and Metallurgy, v. 15, no. 331, p. 299.

Mt. Katherine series

See Katherine group.

Mt. Macdougal series

See Macdougal group.

Mt. Margaret volcanics

Ordovician(?) : Newfoundland, Canada.

R. E. Van Alstine, 1948, Newfoundland Geol. Survey Bull. 23, p. 14.

Mount Merino chert and shale member (of Normanskill formation) 

Middle Ordovician (Chazy) : New York.

Rudolf Ruedemann, 1942, N. T. State Mus. Bull. 327, p. 23, 24; 1942, Bull. 331, 

p. 90, 93-101 [1946].
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 247

Mount Morrison formation 

Precambrian: Colorado. 

M. F. Boos, 1954, Geol. Soc. America Bull., v. 65, no. 2, p. 118-119.

Mount Nansen group

Upper Jurassic or Lower Cretaceous: Yukon, Canada. 

H. S. Bostock, 1936, Canada Geol. Survey Mem. 189, p. 13.

Mt. Nordenskiold formation

Permo-Triassic: East Greenland.

Lauge Koch, 1&29, Meddel. om Gr^nland, bind 73, afd. 2, nr. 1, p. 104, 111; nr. 2, 

p. 248.

Mt. Ord pyroxenite

Precambrian: Arizona.

B. D. Wilson, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1128.

Mt. Ord series

Mesozoic (Jura-Trias) : California.

O. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Ees., 

Div. Mines, sheet 4.

Mount Osborn glaciation

Pleistocene (Wisconsin) : Alaska.

D. M. Hopkins in T. L. Pewe" and others, 1953, U. S. Geol. Survey Circ. 289, p. 11, 13 

(table 1).

Mt. Pictet formation

Lower Carboniferous: Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, p. 96-98; nr. 2, p. 

244-245.

Mount Pleasant greensand horizon (of Manzanilla formation) 

Miocene: Trinidad, British West Indies.

G. A. Waring, 1926, Johns Hopkins Univ. Studies in Geology, no. 7, p. 29, 71. 

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., J. P. 

MacGowan, p. 482-483.

Mt. Poyer sandstone (in Scotland beds) 

Eocene: Barbados, British West Indies. 

J. B. Harrison in C. T. Trechmann, 1933, Geol. Mag., v. 70, no. 823, p. 43.

Mount Rogers volcanic group

Precambrian (?): Tennessee, Virginia, and North Carolina.

G. W. Stose and A. J. Stose, 1944, Am. Jour. Sci., v. 242, no. 8, p. 410-411.

Mt. Ronning formation 

See Ronning group.

Mt. Rowe member (of Miller Peak formation) 

Precambrian (Belt) : Alberta, Canada.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., T. 48, no. 12, 

p. 1902-1903.

Mount St. Helens lavas

Quaternary: Washington.

Jean Verhoogen, 1937, Calif. Univ. Dept. Geol. Sci, Bull., v. 24, no. 9, p. 283-294.

Mt. Serrat glauconite

See Montserrat sand member (of Upper Brasso formation).
248 GEOLOGIC NAMES OF NORTH AMEiRICA

Mount Stevens greenstone and amphibolite

Carboniferous and Permian: British Columbia, Canada. 

J. E. Armstrong, 1946, Canada Geol. Survey Bull. 5, p. 8.

Mount Susitna glaciation

Pleistocene (pre-Wisconsin) : Alaska.

T. N. V. Karlstrom in T. L. Pewfi and others, 1953, U. S. Geol. Survey Circ. 289, p. 3, 

13 (table 1).

Mount Tabor shale member (of Crockett formation) 

Eocene, middle (Claiborne) : Texas. 

H. B. Stenzel, 1938, Tex. Univ. Bur. Econ. Geol. Pub. 3818, p. 20, 125, 151-154 [1939].

Mt. Tripyramid complex

Carboniferous (?) (White Mountain magma series) : New Hampshire. 

A. P. Smith and others, 1938, Geologic map and structure sections of the Mt. Chocorua 

quadrangle, New Hampshire (1 : 62,500) : N. H. Highway Dept.

Mt. Werner series

Middle Devonian: Northeast Greenland.

H. G. Backlund, 1937, Geol. Rundschau, Band 28, Heft 5, p. 411.

Mowich group

Lower Jurassic (Lias) : Oregon.

F. L. Davis, 1937, Geol. Soc. Oreg. Country News Letter, v. 3, no. 2, p. 14. , 

R. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 235-238, 240-247.

Mowitch formation 

See Mowich group.

Moya formation

Pennsylvanian (Virgil) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 72-73.

Moyer member (of Frankfort formation)

Upper Ordovician (Gincinnatian) : New York. 

Marshall Kay, 1953, N. Y. State Mus. Bull. 347, p. 66-67.

Moyers formation

Pennsylvanian (Bendian) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 870-872, 

874.

Muddy Creek beds

Oligocene(?) : Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

T. 66, no. 4, p. 369, pi. 1.

Muddy Creek volcanics

Oligocene, middle: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 374-375, pi. 1.

Mud Fork member (of Bluestone formation)

Mississippian (Chester) : West Virginia and Virginia. 

B. N. Cooper, 1944, Va. Geol. Survey Bull. 60, p. 184.

Mud Springs group

Pennsylvanian (Derry) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 36-39.
GEOLOGIC NAMES Of NORTH AMERICA INTRODUCED IN 1936-1955 249

Muir sandstone

Eocene, middle: California.

C. B. Weaver, 1953, Wash. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 36-44.

Muldraugh formation

Lower Mississippian: Kentucky.

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 200-222.

Mulga tongue

Upper Cretaceous: Alberta, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1622-1623.

Mulholland formation

Pliocene, lower to middle: California.

C. K. Ham, 1952, Calif. Dept. Nat. Res., Div. Mines Special Kept. 22, p. 0 (fig. 3), 14-16.

Mulky cyclothem or formation

Pennsylvanian (Des Moines) : Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18,19, 23 ; 

1938, Kans. Acad. Sci. Trans. v. 41, p. 193, 195.

Mumford formation

Pennsylvanian: Indiana.

C. E. Wier, 1955, Dissert. Abs., v. 15, no. 12, p. 2515.

Mumford Hills sandstone (in McLeansboro formation) 

( Pennsylvanian: Indiana and Illinois.

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvania strata 

between Caseyville, Ky. and Vincennes, Ind.; Abs. Thesis, 111. Univ.: Urbana, 111., 

p. 7.

Muncho formation

Devonian: British Columbia, Canada.

L. R. Laudon and B. J. Chronic, Jr., 1949, Am. Assoc. Petroleum Geologists Bull., 

v. 38, no. 2, p. £17.

Munterville cyclothem (including Munterville limestone) 

Pennsylvanian: Iowa.

L. M. Cline and D. G. Stookey in J. M. Weller and others, 1942, Am. Assoc. Petroleum 

Geologists Bull., v. 26, no. 10, p. 1587-1588.

Murdock group

Precambrian (Proterozoic) : Quebec and Newfoundland, Canada. 

M. J. Frarey, 1952, Canada,Geol. Survey Paper 52-16, p. 2-3.

Murphys beds (in Scotland formation)

Eocene, middle: Barbados, British West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1554.

Murphys Bluff sandstone

Upper Pennsylvanian: Illinois and Indiana.

C. A. Malott in K. A. Payne, 1937, Jour. Paleontology, v. 11, no. 4, p. 276-279.

Murray granite

Precambrian: Ontario, Canada.

W. H. Collins, 1936, Royal Soc. Canada Trans., sec. 4, v. 30, p. 32-34.

Murray Bluff sandstone (in Macedonia formation) 

Pennsylvanian: Illinois.' 

J. M. Weller, 1940, 111. State Geol. Survey Rept. Inv. 71, p. 40.
250 GEOLOGIC NAMES OF NORTH AMEKICA

Murray Iron Works member (of Platteville formation) 

Ordovician: Iowa (subsurface). 

A. F. Agnew, 1949, Stanford Univ. Bull., Abs. Dissert. 1948-49, p. 241-242.

Muscatine sandstone

Pennsylvanian: Iowa.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 75, no. 1, p. 78.

Musgravetown group

Precambrian(?) : Newfoundland, Canada.

A. O. Hayes, 1948, Newfoundland Geol. Survey Bull. 32, p. 16-17.

Mush Lake group

Jurassic and Triassic( ?) : Yukon, Canada.

E. D. Kindle, 1953, Canada Geol. Survey Mem. 268, p. 31-35.

Muskeg formation

Devonian: Alberta, Canada (subsurface).

J. Law, 1955, Alberta Soc. Petroleum Geologists Jour., v. 3, no. 6, p. 83.

Musquash granite

Middle Devonian (?) : New Brunswick, Canada. 

H. R. Belyea, 1944, Acadian Naturalist, v. 1, no. 3, p. 88.

Mussey Brook schist

Precambrian (?) : Rhode Island and Massachusetts.

Alonzo Quinn, R. G. Ray, and W. L. Seymour in Alonzo Quinn and others, 1948, R. 1. 

Port and Indus. Devel. Comm. Geol. Bull. 3, p. 10, geol. map.

Mustang shale

See Mustang Creek formation.

Mustang Creek formation

Upper Cretaceous: California.

O. P. Jenkins, 1943, Am. Assoc. Petroleum Geologists Bull., v. 27, no. 3, p. 251 (fig. 1).

L. I. Briggs, Jr., 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 167, p. 31.

Mutual formation

Precambrian: Utah.

A. B. Granger and others, 1952, Utah Geol. Soc. Guidebook 8, p. 6.

Myatt lentil (in Verda member of Yazoo clay) 

Eocene (Jackson) : Louisiana. 

J. Huner, Jr., 1939, La. Dept. Consexv. Geol. Bull. 15, p. 161-163.

Myerstown limestone

Ordovician (Black River to Trenton) : Pennsylvania. 

Carlyle Gray, 1952, Pa. Geol. Survey Progress Rept. 140, p. 4.

Myrabayan series

Middle Cambrian (?): Nova Scotia, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 1,

Lower and Middle Cambrian pulsations: 2d ed., Peiping, China, University Press,

Natl. Univ. Peking, p. 329, 343.

Myrick Station cyclothem (including Myrick Station limestone)

Pennsylvanian (Des Moines) : Missouri, Iowa, Kansas, and Nebraska. 

L. M. Cline, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 1, p. 37. 

J. M. Jewett, 1945, Kans. State Geol. Survey Bull. 58, p. 31-32, 63-64.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 251

Myrtle Beach peat

Pleistocene: South Carolina.

D. G. Frey, 1952, Am. Jour. Sci., v. 250, no. 3, p. 212-224.

Mystery quartzite series

Precambrian: Northeast Greenland.

Eduard Wenk and John Haller, 1953, Meddel. om Gr0nland, bind 111, nr. 3, p. 16-20.

Naborton formation

Paleocene (Midway): Louisiana.

G. [E.] Murray, Jr., 1941, (abs.) Am. Assoc. Petroleum Geologists Bull., v, 25, no. 5,

p. 941-942. 

G. E. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull.,

v. 29, no. 1, p. 56-57.

Nachusa formation

Middle Ordovician: Illinois.

J. 8. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 6, 37, flgs. 3,9.

Nacozari granite

Age not stated: Sonora, Mexico.

W. R. Wade and Alfred Wandtke, 1920, Am. Inst. Mining and Metall. Engineers 

Trails., v. 63, p. 383.

Nacozari limestone

Upper Pennsylvanian: Sonora, Mexico.

W. B. Wade and Alfred Wandtke, 1920, Am. Inst. Mining and Metall. Engineers Trans.,

v. 63, p. 383. 

Manuel Maldonado-Koerdell, 1954, AssociaciSn Mexicana GeOlogos Petroleros, T. 6,

nos. 3-4, p. 123.

Nadeau gravel

Pleistocene, upper (?): California.

L. F. Noble, 1953, Geology of the Pearland quadrangle, California: U. S. Geol. Survey 

Geol. Quadrangle Map [GQ 24].

Nadlo Point limestone

Lower Ordovician: Northwest Territories (Devon Island), Canada.

V. E. Kurtz, A. H. McNair, and D. B. Wales, 1952, Am. Jour. Scl., v. 250, no. 9, 

p. 642-645.

Naftan limestone

Pliocene-Pleistocene: Mariana Islands (Saipan).

Bisabnro Tayama, 1938, Geomorpbology, geology, and coral reefs of Saipan Island: 

Tropical Industry Inst., Palau, South Sea Islands, Bull. 1 [English translation in 

library of U. S. Geol. Survey, p. 69-71].

Josiah Bridge in W. S. Cole and Joslah Bridge, 1953, U. S. Geol. Survey Prof. Paper 

253, p. 12.

Nafutan limestone

See Naftan limestone.

Nagany limestone

Middle Ordovician (Blackriveran) : Pennsylvania. 

B. S. Bassler, 1950, Geol. Soc. America Mem. 44, p. 12, 270.

Nagas beds

Eocene: Mariana Islands (Guam).

Bisaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 49, table 4 [English translation in library of U. S. Geol. Survey, p. 59].

426779 57 17
252 GEOLOGIC NAMES OF NORTH AMERICA

Naha formation

Quaternary: Arizona.

J. T. Hack, 1941, Geog. Review, v. 31, no. 2, p. 262-263; 1942, Harvard Univ. Peabody Mas. Am. Archaeology and Ethnology Papers, v. 35, no. 1, p. 53-54.

Nahanni formation

Middle Devonian: British Columbia, Yukon, and Northwest Territories

(Mackenzie), Canada. 

C. O. Hage, 1945, Canada Geol. Survey Paper 45-22, p. 5-6.

Nain anorthosite > Precambrian: Newfoundland (Labrador), Canada. 

S. K. Roy, 1941, Field Mus. Nat History Geol. Mem., v. 2, p. 20. ' 

D. M. Baird, 1953, Newfoundland Geol. Survey Inf. Circ. 4 (revised), p. 137.

Naiset formation

Middle Cambrian: Alberta and British Columbia, Canada.

Charles Delss, i939, (abs.) Geol. Soc. America Bull., v. 50, no. 12, p. 1906; 1940, 

v. 51, no. 5, p. 773-775.

Nakaibito formation

Recent: New Mexico.

L. B. Leopold and C. T. Snyder, 1951, U. S. Geol. Survey Water-Supply Paper 1110-A, 

p. 9-12.

Nakaye formation

Pennsylvanian (Magdalena) : New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 92-93, 

fig. 2.

Nanchital conglomerate series

Eocene, middle and upper: Istmo de Tehuantepec, Mexico.

T. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 278, correlation chart.

Nanchital shales

Eocene, lower: Istmo de Tehuantepec, Mexico.

T. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 277, correlation chart

Nankoweap group

Precambrian (Algonkian) : Arizona.

C. E. Van Gundy, 1934, Grand Canyon Nature Notes, v. 9, no. 8, p. 345-346; 1951, 

Geol. Soc. America Bull., v. 62, no. 8, p. 953-959.

Naomi Peak limestone member (of Langston formation) 

Cambrian: Utah and Idaho. 

G. B. Maxey, 1955, Dissert. Abs., v. 15, no. 4, p. 558.

Naosap granodiorite

Precambrian: Manitoba, Canada.

Jorma Kalliokoski, 1952, Canada Geol. Survey Mem. 270, p. 28-24.

Napali formation

Pliocene (?) : Hawaiian Islands (Kauai).

G. A. Macdonald, D. A. Davis, and D. C. Cox, 1954, Volcano Letter 526, p. 2.

Napanee member (of Rockland formation)

Middle Ordovician (Mohawkian) : Ontario, Canada and New York. 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 255-256.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 253

Naparima Hill formation

Upper Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1950, Associaci6n Venezolano de Geologfa, Minerfa y Petr61eo Bol. tomo 

2, no. 1, p. 48 (correlation chart), 61-63.

Napa Valley series

Pliocene, lower: California.

O. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Naptowne glaciation

Pleistocene (Wisconsin): Alaska.

T. N. V. Karistrom in T. L. Pew6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 4, 

13 (table 1).

Naranjo formation

Triassic: New Mexico.

G. O. Bachman, 1953, U. S. Geol. Survey Oil and Gas Inv. Map OM 137.

Narhval formation 

Narhval Sund formation

See Narwhale Sound formation.

Nariva River marl

Eocene, lower and middle: Trinidad, British West Indies.

A. B. Thompson, 1925, Oil field exploration and development, v. 1, Oil field principles:

New York, D. Van Nostrand Co., p. 389, 390. 

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special Pub. 24,

p. 2, 3.

Narizian stage

Eocene, late: California.

V. S. Mallory, 1953, (abs.) Jour. Paleontology, v. 27, no. 6, p. 903.

Narrows formation

Cambrian (post-Olenian) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 80-Sl.

Narssarssuk formation

Precambrian (upper Algonkian) : North Greenland.

V. B. Kurtz and D. B. Wales, 1950, Okla. Acad. Sci. Proc., v. 31, p. 83, 85-86.

Narvhal Sound formation

See Narwhale Sound formation.

Narwhale Sound formation

Ordovician: Northeast Greenland.

Christian Poulsen, 1930, Meddel. om Gr0nland, bind 74, nr. 12, p. 316.

Narwhal Sound formation

See Narwhale Sound formation.

Nashoba formation

Carboniferous: Massachusetts.

L. W. Currier and R. H. Jahns, 1952, Guidebook for field trips in New England: Geol. 

Soc. America, p. 106-108, 110.

Natchez Pass formation

Middle Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada : U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].
254 GEOLOGIC NAMES OF NORTH AMERICA

Natlins Cove formation

Silurian: Newfoundland, Canada.

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 12.

Natsy member (of Deese formation)

Pennsylvanian (Des Moines) : Oklahoma.

C. W. Tomlinson, 1937, Ardmore Geol. Soc. [Guidebook] Field Trip, March 13 , p. 1-2.

Navada member (of Quartzite Range formation) 

Precambrian(?) : British Columbia, Canada. 

W. H. Matthews, 1953, British Columbia Dept. Mines Bull. 31, p. 21.

Navarro River member (of Brasso formation)

Miocene, lower or middle: Trinidad, British West Indies. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Pr.oc., v. 4, p. 554.

Navet formation

Eocene, lower and middle: Trinidad, British West Indies. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 535.

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special Pub. 24, 

p. 1-3.

Navy Island formation

Lower Ordovician (Canadian) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 81-83.

Nazareno bed (in Cupido limestone)

Lower Cretaceous: Zacatecas, Mexico.

W. H. Triplett, 1952, Am. Inst. Mining and Metall. Engineers Trans., v. 193, p. 584 

(fig. 1).

Nazcha formation

Lower to Middle Jurassic: British Columbia, Canada.

K. D. Watson and W. H. Matthews, 1944, British Columbia Dept. Mines Bull. 19, 

p. 17-19.

Nealmont limestone

Middle Ordovician (Mohawkian) : Pennsylvania.

G. M. Kay, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1969.

Nedrow member (of Onondaga limestone) 

Middle Devonian: New York. 

W. A. Oliver, Jr., 1954, Geol. Soc. America Bull., v. 65, no. 7, p. 627-628, 636-637.

Needle chert

Lower Devonian: Quebec, Canada.

A. M. Bell, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 241.

Needle Mountain group

Lower Devonian: Quebec, Canada.

A. M. Bell, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 241.

Needle Mountain limestone

Lower Devonian: Quebec, Canada.

A. M. Bell, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 241.

Needles complex

Precambrian: California.

W. J. Miller, 1944, 'Calif. Jour. Mines and Geology, v. 40, no. 1, p. 116-119, pi. 7.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 255

Needmore shale

Middle Devonian: Pennsylvania.

Bradford Willard in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. Geol. 

Survey, ser. 4, Bull. G 19, p. 149-150.

Neepawa volcanics

Precambrian: Ontario, Canada.

P. J. Pettijohn, 1936, Jour. Geology, v. 44, no. 3, p. 348-349.

Negus flow

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. F. Henderson and I. C. Brown, 1950, Canadian Inst. Mining and Metallurgy Trans., 

v. 53, p. 420.

Nehalem formation

Eocene, upper, to Oligocene, lower: Oregon.

M. L. Steere, 1955, Geol. Soc. Oreg. Country News Letter, v. 21, no. 10, p. 85.

Neiba formation

Eocene, upper: Dominican Republic.

W. M. Small, 1948, Seismol. Soc. America Bull., v. 38, no. 1, p. 26.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 21.

Neills Cliff formation

Lower Jurassic (middle and upper Liassic) : East Greenland. 

Alfred Rosenkrantz in Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 1, 

p. 143-145.

Nekik granodiorite

Precambrian: Manitoba, Canada.

Jorma Kalliokoski, 1952, Canada Geol. Survey Mem. 270, p. 25.

Nelson beds

Triassic: North Carolina.

Grover Murray, Jr., 1938, Science, v. 87, no. 2261, p. 390.

Nelson Lake granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 129.

Nelway formation

Middle Cambrian: British Columbia, Canada.

H. W. Little, 1950, Canada Geol. Survey Paper 50-19, p. 18-21.

Nepean sandstone

Lower Ordovician and Upper Cambrian (?) : Ontario, Canada.

A. B. Wilson, 1937, Royal Soc. Canada Trans., ser. 3, v. 31, sec. 4, p. 46, 47.

Nescatunga gypsum member (of Blaine formation) 

Permian (Leonardian) : Kansas. 

G. H. Norton, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 12, p. 1794-

1795, 1797. 

R, C. Moore, J. 'C. Frye, and J. M. Jewett, 1944, Kans. State Geol. Survey Bull. 52,

pt. 4, p. 158.

Neshoba sand member (of Tallahatta formation) 

Eocene, middle (Claiborne group) : Mississippi. 

E. P. Thomas, 1942, Miss. State Geol. Survey Bull. 48, p. 24-28.
256 GEOLOGIC NAMES OF NORTH AMERICA

Nesson formation

Jurassic: Subsurface in North Dakota and Montana, and Manitoba, Canada. 

J. W. Nordquist, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., p. 104, 

fig. 2.

Nestucca formation

Eocene, upper: Oregon.

P. D. Snavely, Jr., and H. E. Yokes, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 97.

Neutral cyclothem or formation

Pennsylvania n (Des Moines) : Kansas.

G. B. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 22 ; 

1938, Kans. Acad. Sci. Trans., v. 41, p. 193, 196.

Neva glacial stage

Pleistocene: Colorado.

R. L. Ives, 1942, Geog. Review, v. 32, no. 3, p. 450.

Neville formation

Quaternary: Texas.

C. C. Albritton, Jr., and Kirk Bryan, 1938, (abs.) Geol. Soc. America Bull., v. 49, 

no. 12, pt. 2, p. 1863 ; 1939, v. 50, no. 9, p. 1430-1432.

Newbec breccia

Precambrian (Archean) : Quebec, Canada.

M. B. Wilson, 1941, Canada Geol. Survey Mem. 229, p. 43-45.

Newberry formation

Precambrian (Grand Cany on) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 110.

New Bremen granite

Precambrian: New York.

A. F. Buddington, 1939, Geol. Soc. America Mem. 7, p. 84.

Newby formation

Triassic(?) : Washington.

J. D. Barksdale, 1948, Northwest Science, v. 22, no. 4, p. 165, 167-169.

Newby glauconitic sand member (of Reklaw formation) 

Eocene, middle (Claiborne) : Texas. 

H. B. Stenzel, 1938, Tex. Univ. Bur. Econ. GeoL Pub. 3818, p. 20, 65-71 [1939].

New Canaan formation

Silurian (?) : Nova Scotia, Canada.

D. G. Crosby, Jr., 1953, Stanford Univ. Bull., Abs. Dissert., v. 27, p. 418.

Newcastle lens (in Newcastle formation) 

Upper Cretaceous: Wyoming. 

R. M. Grace, 1952, Wyo. Geol. Survey Bull. 44, p. 14-15:

New Castle porphyry

Eocene, upper (?) : Jamaica, British West Indies.

C. A. Matley, 1937, Geol. Mag., v. 74, no. 11, p. 506; 1951, Geology and physiography 

of the Kingston district, Jamaica: Inst. of Jamaica, p. 35, 83-87, 99-102, geol. map.

New Design group

Mississippian (Chester) : Illinois and Missouri.

J. M. Weller, 1939, Kans. Geol. Soc. Guidebook 13th Ann. Field Conf., p. 131, 134.
GEOLOGIC NAMES OFSSTORTH AMERICA INTRODUCED IN 1936-1955 257

Newfleld diabase

Precambrian (Keweenawan?): Ontario, Canada.

Jack Satterly, 1948, Ontario Dept. Mines Prelim. Bept. 1948-2, p. 5.

New Fork tongue (of Wasatch formation) 

Eocene, middle: Wyoming. 

J. H. Donovan, 1950, Wyo. Geol. Assoc. Guidebook 5th Ann. Field Conf., p. 64.

New Glarus member (of Pecatonica formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 41, figs. 3, 10, 16.

New Goldvue quartz diorite 

See Goldvue quartz diorite.

New Hampshire sequence

Ordovician to Lower Devonian: New Hampshire and Vermont. 

W. S. White and R. H. Jahns, 1950, Jour. Geology, v. 58, no. 3, p. 182.

New Harmony sandstone (in McLeansboro formation) 

Pennsylvanian: Indiana and Illinois.

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvanian strata 

between Caseyville, Ky. and Vincennes, Ind.; Abs. Thesis, 111. Univ.; Urbana, 111., 

p. 8.

New Haven arkose

Triassic: Connecticut.

P. D. Krynine, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1919; 

1950, Conn. State Geol. Nat. History Survey Bull. 73, p. 37-57.

New Haven lens (in Newcastle formation) 

Upper Cretaceous: Wyoming. 

R. M. Grace, 1952, Wyo. Geol. Survey Bull., 44, p. 14,15.

New Market limestone

Middle Ordovician: Virginia.

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 71-74.

Newport albitized quartz diorite

Precambrian (Archean): Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Rept 255, map.

Newport group

Precambrian: Washington.

M. C. Schroeder, 1952, Wash. Dept. Conserv. Devel., Div. Mines and Geology Bull. 40, 

p. 7, 9, 20.

Newport limestone member (of White Limestone formation)

Oligocene, upper, to Miocene, lower: Jamaica, British West Indies.

V. A. Zans, H. R. Versey, and J. B. B. Williams in V. A. Zans, 1955, Jamaica Geol. 

Survey Dept. Ann. Rept. 1953-54, p. 4.

Newspaper Rock sandstone 

Upper Triassic: Arizona.

H. R. Stagner in L. H. Daugherty. 1941, Carnegie Inst. Washington Pub. 526, p. 10, 

11-12.

Newton cyclothem (including Newton limestone) 

Pennsylvanian: Illinois. 

W, A, Newton and J. M. Weller, 1937, 111. State Geol. Survey Rept. Inv. 45, p. 24-25.
258 GEOLOGIC NAMES OF NORTH AMERICA

Newton stony clay

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water 'Supply Paper 

322, p. 10, map.

Newton Creek limestone

Middle Devonian: Michigan.

G. A. Cooper and A. S. Warthin, 1941, Washington Acad. Sci. Jour., v. 31, no. 6, 

p. 260.

Newton Mine volcanics

Jurassic: California.

G. R. Heyl and J. H. Eric, 1948, Calif. Dept. Nat. Res., Div. Mines Bull. 144, pt. 1, 

p. 52, 53, pi. 7.

Newville group

Jurassic (Knoxville) : California.

F. M. Anderson, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 184 [preprint 1941].

Ngardok (Galdog) beds

Eocene: Caroline Islands (Babelthaup).

Risaburo Tayama, 1935, Topography, geology, and coral reefs of the Palau Islands: 

Tohoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no. 18, 

p. 17, 39 [English translation in library of U. 'S. Geol. Survey] ; 1939, Japanese 

Jour. Geology and Paleontology Trans. and Abs. nos. 1-2, Abs., p. 29; 1952, 

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 64-65, table 4 

[English translation in library of U. S. Geol. Survey, p. 76-77].

Ngarekeukl (Galkyoku) limestone

Recent: Caroline Islands (Peleliu).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation 

in library of U. 'S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan 

Hydrog. Office Bull., v. 11, p. 67, table 4 [English translation in library of U. S. 

Geol. Survey, p. 80].

Ngeremlengui formation 

Nghmesed volcanic breccia

SeeKameset (Gamusetsu) agglomerate.

Niakogon tongue (of Chandler formation) 

Upper Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 164.

Nicely shale

Lower Jurassic (Lias) : Oregon.

R. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 239-240.

Nicolet River formation

Ordovician: Quebec, Canada.

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Rept. 204, p. 9-12.

Nicollet Creek member (of St. Lawrence formation) 

Upper Cambrian (St. Croixian) : Minnesota.

C. R. Stauffer, G. M. Schwartz, and G. A. Thiel, 1939, Geol. Soc. America Bull., v. 50, 

no. 8, p. 1239-1240.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 259

Nicomekl silt

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 11, 48, table, map.

Nictaux beds

Silurian: Nova Scotia, Canada.

H. M. Ami, 1900, Royal Soc. Canada Trans., 2d ser., v. 6, sec. 4, p. 203.

Niesen beds

Lower Cretaceous (Infravalanginian-Valanginian) : Northeast Greenland. 

Wolf Maync, 1947, Meddel. om Grjzfnland, bind 132, nr. 2, p. 64-68, 119, pi. 6.

Nieva shale

Lower Cretaceous: Zacatecas, Mexico.

W. H. Triplett, 1952, Am. Inst. Mining and Metall. Engineers Trans., v. 193, p. 584 

(fig. 1).

Nigger Canyon volcanics 

Pleistocene: California. 

J. F. Mann, Jr., 1955, Calif. Dept. Nat. Res., Div. Mines Special Rept. 43, p. 9, 15.

Nikolai Creek glaciation

Pleistocene (Wisconsin): Alaska.

D. B. Krinsley in T. L. P we and others, 1953, U. S. Geol. Survey Circ. 289, p. 6, 13 

(table 1).

Niland tongue (of Wasatch formation) 

Eocene, lower: Wyoming.

G. N. Pipiringos, 1955, Wyo. Geol. Assoc. Guidebook 10th Ann. Field Conf., p. 100-102.

Ninnescah shale

Permian (Leonard series) : Kansas.

G. H. Norton, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, p. 1557; 

1939, v. 23, no. 12, p. 1767-1773.

Niobrara River channel sands (in Valentine formation) 

Miocene to Pliocene: Nebraska. 

M. K. Elias, 1942, Geol. Soc. America Special Paper 41, p. 137.

Nipe series

Oligocene and Miocene: Cuba.

F. G. Keijzer, 1945, Geog. Geol. Meded. (Utrecht Univ.) Physiog.-Geol. Reeks, ser. 2, 

no. 6, p. 50.

Nippers Harbour group

Ordovician: Newfoundland, Canada.

D. M. Baird, 1948, Canadian Inst. Mining and Metallurgy Bull., v. 41, p. 211, 212 

(fig. 1) ; 1951, Canada Geol. Survey Paper 51-21, p. 29-31.

Nippewalla group

Permian (Leonard series): Kansas.

G. H. Norton, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 12, p. 1782. 

R. C. Moore, J. C. Frye, and J. M. Jewett, 1944, Kans. State Geol. Survey Bull. 52, 

pt. 4, p. 157-158.

Nipsachuck gneiss

Precambrian( ?): Rhode Island.

G. M. Richmond in G. M. Richmond and W. B. Alien, 1951, R. I. Port and Indus. 

Devel. Comm. Geol. Bull. 4, p. 10, 11.
260 GEOLOGIC NAMES OF NORTH AMERICA

Nisku member (of Winter-burn formation) 

Devonian: Alberta, Canada (subsurface).

D. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, p. 1815- 

1816.

Nistoassini-Nayelles Lakes granite

Precambrian: Saskatchewan, Canada.

A. R. Byers, 1949, Saskatchewan Geol. Survey (Precambrian Geology Ser.) Kept. 1, 

p. 13-14.

Nivaje shale

[Miocene] : Dominican Republic.

William Lonsdale in T. S. Heneken, 1853, Geol. Soc. London Quart. Jour., v. 9, p. 133, 

134.

Nix porphyrite

Carboniferous: California.

O. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Ees., 

Div. Mines, sheet 4.

Nizi formation

Upper Mississippian and Pennsylvanian(?) : British Columbia, Canada. 

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Noah member (of Blubell formation) 

Silurian: Utah. 

Paul Billingsley in J. M. Boutwell, 1933, 16th Internat. Geol. Cong. [United States]

Guidebook 17, Excursion C-l, p. 110 (fig. 14). 

J. K. Rigby, 1952, Utah Geol. Mineralog. Survey Bull. 45, p. 23, 27, fig. 6.

Noa Lake quartzite

Middle Cambrian (?): Northeast Greenland.

A. B. Cleaves and B. F. Fox, 1935, Geol. Soc. America Bull., v. 46, no. 3, p. 474, pi. 43.

Nob Hill flow (in Yellowknife group)

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. E. G. Brown and A. S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans., 

v. 56, p. 70, 71.

Noche Buena formation

Recent: Cuenca de Mexico, Mexico.

Kirk Bryan, 1948, Soc. Geol. Mexicana Bol., tomo 13, p. 12, pi. 1.

Noel formation

Upper Triassic: British Columbia, Canada.

C. B. Cairnes, 1937, Canada Geol. Survey Mem. 213, p. 14-15.

Noisy Brook gneiss

Age not stated: Maine.

Kern Jackson, 1953, Maine State Geologist Pept. 1951-1952, p. 62-66.

Nokomis group

Precambrian: Manitoba, Canada.

D. S. Robertson, 1949, Canada Geol. Survey Paper (Prelim. Map) 49-20.

Nome River glaciation

Pleistocene (pre-Wisconsin): Alaska.

D. M. Hopkins in T. L. P6w6 and others, 1953, U. S. Geol. Survey Circ. 289, p. 10, 13 

(table 1).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 261

Nonacho series

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. F. Henderson, 1937, Canada Geol. Survey Paper 37-2, p. 6.

Nonada sand member (of Domengine formation) 

Eocene: California. 

M. B. Eayne,. 1951, Calif. Dept. Nat. Res., Div. Mines Special Kept. 9, p. 15.

No Name argillite

Precambrian: Washington.

M. C. Schroeder, 1952, Wash. Dept. Conserv. Devel., Div. Mines and Geology Ball. 40, 

p. 7, 9,11-13.

ftonewaug granite

Paleozoic: Connecticut.

R. M. Gates, 1953, New England Intercollegiate Geol. Conf. [Guidebook] 40th [Ann.

Meeting], Field Trip B; 1954, Conn. Geol. Nat. History Survey Quadrangle Rept. 3,

p. 3, 6-7, 15-19.

Noonday dolomite

Lower Cambrian: California.

J. C. Hazzard, 1937, Calif. Jour. Mines and Geology, v. 33, no. 4, p. 279 (fig. 3e), 

300-301.

Nopah formation

Upper Cambrian: California.

J. C. Hazzard, 1937, Calif. Jour. Mines and Geology, v. 33, no. 4» p. 276 (fig. 3b), 

320-322.

Noranda Lake granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

P. 128.

Nprdegg member (of Fernie formation) 

Jurassic, Alberta, Canada. 

J. Spivak, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 535.

Norfleet cyclothem (including Norfleet limestone)

PennsyIranian (Des Moines) : Kansas, Missouri, and Nebraska. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 338-339; 1945, 

Bull. 58, p. 44-45, 69.

Norfolk formation

Devonian: Ontario, Canada.

J. F. Caley, 1940, Canada Geol. Survey Paper 40-22, p. 4; 1941, Mem. 226, p. 49-57.

Noriss granite

Precambrian: Manitoba, Canada.

J. M. Harrison, 1949, Canada Geol. Survey Mem. 250, p. 19, 20.

Norma gravel

Miocene, lower: Nuevo Leon, Mexico.

1952, Corpus Christ! Geol. Soc. [Guidebook] Ann. Field Trip, May 9-10, p. 3, geol. map.

Norphlet formation

Permian: Subsurface in Arkansas, Louisiana, and Texas.

R. T. Hazzard, W. T. Spooner, and B. W. Blanpied, [1947], Sbreveport Geol. Soc, 1945 

Ref. Rept,, v. 2, p. 48$, 484, 488.
262 GEOLOGIC NAMES OF NORTH AMERICA

Norquay Mountain member (of Rocky Mountain formation) 

Permian and Pennsylvanian(?) : Alberta, Canada. 

F. W. Beales, 1950. Canada Geol. Survey Paper 50-27, p. 6.

Norsemandal sandstone

Upper Precambrian(?) : North Greenland.

P. J. Adams and J. W. Cowie, 1953, Meddel. om Gr0nland, bind 111, nr. 7, p. 9-10.

North Arm complex

Age not stated: Newfoundland, Canada.

A. K. Snelgrove, 1934, Newfoundland Geol. Survey Bull. 1, p. 10.

North Bay granite

Devonian (?) : Newfoundland, Canada.

W. B. Jewell, 1939, Newfoundland Geol. Survey Bull. 17, p. 10-12.

North Boulder group

Precambrian: Montana.

C. P. Ross, 1949, Washington Acad. Sci. Jour., v. 39, no. 3, p. Ill, 113.

North Brook granite

Post-Ordovician: Newfoundland, Canada.

T. N. Walthier, 1949, Newfoundland Geol. Survey Bull. 35, pt. 1, p. 28.

North Coast schist group

Cretaceous (?) : Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 805-812.

Northcraft formation

Eocene, upper: Washington.

P. D. Snavely, Jr., and others, 1951, U. S. Geol. Survey Coal Inv. Map C 8, sheet 1.

North Creek member (of Yazoo clay)

Eocene, upper (Jackson group) : Alabama.

G. E. Murray, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 10, p. 1838, 1839

(footnote). 

L. D. Toulmin, P. E. LaMoreaux, and C. K. Lanphere, 1951, Ala. Geol. Survey

Special Kept. 21, p. 120-122, pi. 3.

Northern Bight granite

Devonian (?) : Newfoundland, Canada.

E. R. Rose, 1948, Newfoundland, Geol. Survey Bull. 32, pt. 2, p. 42,47.

North Hogback tongue (of Point Lookout sandstone) 

Upper Cretaceous: New Mexico. 

P. T. Hays and A. D. Zapp, 1955, U. S. Geol. Survey Oil and Gas Inv. Map OM 144.

North Horn formation

Upper Cretaceous and Paleocene: Utah.

S. L. Schoff, 1938, Ohio State Univ. Abs. Doctors' Dissert. 25, p. 379.

B. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 132-135.

North Keys sand

Miocene ( ?) : Maryland.

J. T. Hack, 1955, U. S. Geol. Survey Prof. Paper 267-A, p. 8-10.

Northrip member (of Yegua formation) 

Eocene: Texas.

H. D. McCallum, 1947, S. Tex. [Geol. Soc. Guidebook J 14th Ann. Meeting Field 

Trip, p. 5.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 263

Northwest Arm formation

Ordovician: Newfoundland, Canada.

J. R. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 7-8.

Norton limestone member (of Tribes Hill formation) 

Lower Ordovician: New York.

E. E. Wheeler, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1938- 

1939; 1942, Am. Jour. Sci., v. 240, no. 7, p. 518, 522, 523.

Nortonville shale member (of Kreyenhagen formation) 

Eocene, upper: California.

P. P. Goudkoff, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 248

(fig. 99a), 150 [preprint 1941]. 

Ealph Stewart, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 34, sheet 2.

Norway quartz monzonite

Upper Devonian (?) (New Hampshire magma series) : New Hampshire. 

A. P. Smith and others, 1938, Geologic map and structure sections of the Mt. Chocorua 

quadrangle, New Hampshire (1:62,500) : N. H. Highway Dept.

Norwood shale

Middle Devonian: Michigan.

[G. M. Ehlers], 1938, Mich. Acad. Sci., Arts and Letters Sec. Geology and Mineralogy 

[Guidebook] 8th Ann. Field Excursion, p. 3, [figs. 1-3] after p. 8.

Norwood tuff

Oligocene: Utah.

A. J. Eardley, 1944, Geol. Soc. America Bull., v. 55, no. 7, p. 845-846.

Notikewin member (of Spirit River formation) 

Lower Cretaceous: Alberta, Canada. 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 9.

Notre Dame series

Silurian: Newfoundland, Canada.

W. H. Twenhofel and R. E. Shrock, 1937, Geol. Soc. America Bull., v. 48, no. 12, 

p. 1767.

Nottawasaga group

Ordovician: Ontario, Canada (subsurface).

B. A. Liberty, 1955, Geol. Asssoc. Canada Proc., v. 7, pt. 1, p. 146.

Nova formation

(?) Miocene, upper: California.

E. H. Hopper, 1947, Geol. Soc. America Bull., v. 58, no. 5, p. 414.

Novato conglomerate

Cretaceous (?) : California.

C. E. Weaver, 1949, Geol. Soc. America Mem. 35, p. 18 (table 3), 46.

Noxie sandstone lentil or member (of Chanute formation)

Pennsylvanian (Missouri subseries) : Kansas and Oklahoma.

R. C. Moore and others, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf.,

p. 40, 42. 

M. C. Oakes, 1940, Okla. Geol. Survey Bull. 62, p. 61.

Noxubee sand

Eocene (Wilcox) : Mississippi.

F. F. Mellen, 1950, Miss. State Geol. Survey Bull. 69, p. 10-11.
264 GEOLOGIC NAMES OF NORTH AMERICA

Nuevo Le6n group

Lower Cretaceous: Nueya Le<5n, Mexico.

B. W. Imlay, 1944, Geol. Soc. America Bull., v. 55, no. 8, p. 1005, 1007, Chart lOa.

Nugget series

Precambrian: British Columbia, Canada. ' 

E. A. McGuire, 1941, The Miner, v. 14, no. 10, p. 58-59.

Nugsuak formation

Cretaceous-Tertiary: West Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 258-262.

Nunarsuit granite

Precambrian: Southwest Greenland.

C. E. Wegmann, 1938, Meddel. om Gr^nland, bind 113, nr. 2, p. 98-105.

Nunatami formation

Lower Ordovician (Upper Canadian) : North Greenland.

Christian Poulsen, 1927, Meddel. om Gr0nland, bind 70, nr. 2, p. 246-248, 342.

Nunkoweap sandstone

Precambrian (Kwaguntan) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 114.

Nunn member (of Lake Valley formation) 

Mississippian (Osage) : New Mexico.

L. B. Laudon and A. L. Bowsher, 1949, Geol. Soc. America Bull., v. 60, no. 1, p. 13, 

fig. 4.

Nuwok formation 

Pliocene: Alaska.

W. H. Ball, 1919, Report of the Canadian Arctic expedition 1913-1918, v. 8, pt. A, 

p. 26A.

Nygaard Bay limestone

Lower Ordovician (Canadian) : North Greenland.

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 50.

Oacoma zone (in Sully member of Pierre formation) 

Cretaceous: South Dakota. 

W. V. Searight, 1937, S. Dak. State Geol. Survey Eept. Inv. 27, p. 23-25, pi. 3.

Oak Bay formation

Silurian: New Brunswick, Canada.

F. J. Alcock, 1946, Canada Geol. Survey Paper (Prelim. Map) 46-3.

Oak Creek member (of Supai formation) 

Pennsylvanian: Arizona. 

E. L. Jackson, 1951, Plateau, v. 24, no. 2, p. 87-88, 91.

Oak Hall member (of Nealmont limestone)

Middle Ordovician (Mohawkian) : Pennsylvania.

G. M. Kay, 1944, Jour. Geology, v. 52, no. 1, p. 3; no. 2, p. 97.

Oak Hill member (of Naheola formation) 

Paleocene (Midway): Alabama.

L. D. Toulmin, P. E. LaMoreaux, and C. B. Lanphere, 1951, Ala. Geol. Survey Special 

Eept. 21, p. 42-44.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED ESF 19 3 6-19 5 5 265

Oak Orchard member (of Lockport formation)

Middle Silurian (upper Niagaran) : New York.

B. F. Howell and J. T. Sanford, 1947, Wagner Free Inst. Sci. Bull., v. 22, no. 4, p. 

33-34.

Obatogamau granite

Precambrian: Quebec, Canada.

G. W. H. Norman, 1936, Royal Soc. Canada Trans., ser. 3, v. 30, sec. 4, p. 124.

Obispo tuff member (of Monterey formation) 

Miocene, lower: California. 

M. N. Bramlette, 1946, U. S. Geol. Survey Prof. Paper 212, p. 22-23.

Oblique Creek formation

Age unknown: British Columbia, Canada.

K. D. Watson and W. H. Matthews, 1944, British Columbia Dept. Mines Bull. 19, p. 

14-15.

Obregon formation

Pennsylvanian (Cisco) : Texas.

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 91.

O'Carroll member (of Martin limestone) 

Devonian: Arizona. 

S. L. Tainter, 1948, U. S. Bur. Mines Rept Inr. 4293, p. 5.

tOcate sandstone

Jurassic: New Mexico.

G. O. Bachman, 1953, U. S. Geol. Survey Oil and Gas Inv. Map OM 137.

Oceanic formation

Eocene, upper, to Oligocene: Barbados, British West Indies.

J. B. Harrison and A. J. Jukes-Brown, 1890, The geology of Barbados: Salisbury,

Bennett Brothers, p. 7, 17-26. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1577-1586.

Ochoa series

Permian: New Mexico and Texas.

J. E. Adams and others, 1939, Am. ABSOC. Petroleum Geologists Bull., v. 23, no. 11, 

p. 1676-1677.

Ocoa formation

Eocene: Dominican Republic.

Richard Weyl, 1941, Deutsch-Dominikanischen Tropenforschungsinstltuts VerSff., Band 

2, p. 25, 29.

Oconto gabbroic anorthosite

Precambrian: Ontario, Canada.

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.

Ocotillo conglomerate

Pliocene, upper, of Pleistocene, lower: California.

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 2, p. 24.

Ocotillo silt member (of Tansill formation)

Permian (Guadalupe) : New Mexico and Texas.

W. Tex. Geol. Soc. [Guidebook] Fall Field Trip, Sept. 1940, p. 7, 14, fig. 2. 

R. K. DeFord and G. D. Riggs, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, 

no. 9, p. 1717, 1722, table 2.
266 GEOLOGIC NAMES OF NORTH AMEKICA

Ocozocualta [formation]

Upper Cretaceous: Tabasco, Mexico.

E. J. Guzman, Rodolfo Suarez, and Ernesto Lopez Ramos, 1953, 19e Gong. Gfiol. 

Internat. Comptes rendus, fasc. 16, pi. 1 (geol. map) [1954].

Odee formation

Pleistocene: Kansas.

H. T. U. Smith, 1940, Kans. State Geol. Survey Bull. 34, p. 100-108.

Offley Island formation

Middle Silurian (upper Llandoveryj : North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 238-239.

Oglesby marble member (of Nittany formation) 

Lower Ordovician (Canadian) : Virginia. 

B. N. Cooper, 1939, Va. Geol. Survey Bull. 55, p. 17-19.

Oglesby member (of Pecatonica formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., fig. 3.

Oglethorpe formation

Precambrian: Georgia.

A. S. Furcron and K. H. Teague, 1945, Ga. Geol. Survey Bull. 51, p. 35-36.

Ohia basalt

Pleistocene (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 94-96.

Oklan series (epoch)

Middle Pennsylvanian: North America.

R. C. Moore and M. L. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, 

no. 3, p. 288-289, 292-297.

Okmok volcanics

Quaternary : Alaska (Aleutian Islands).

F. M. Byers, Jr., and others, 1947, U. S. Geol. Survey Alaskan Volcano Inv. Rept. 2, 

pt. 3, p. 31.

Okpikruak formation

Lower Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 159-160.

Olaa agglomerate

[Quaternary] : Hawaiian Islands (Hawaii).

C. K. Wentworth, 1938, Hawaiian Volcano Observatory 3d Special Rept, p. 34, 38.

Olalla pyroxenite

Jurassic (?) : British Columbia, Canada.

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Olalla syenite

Jurassic and/or younger: British Columbia, Canada. 

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Olallie lavas

Pleistocene: Oregon.

T. P. Thayer, 1936, Jour. Geology, v. 44, no. 6, p. 706, 709 (fig. 2), 713 (fig. 3).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 267

Old Bridge sand member (of Raritan formation) 

Upper Cretaceous: New Jersey.

H. C. Barksdale and others, 1943, The ground-water supplies of Middlesex County, New 

Jersey : N. J. State Water Policy Comm. [Special Kept. 8], p. 67.

Olden gabbro

Precambrian: Ontario. Canada. * 

W. D. Harding, 1951, Ontario Dept. Mines Ann. Kept., v. 56, pt. 6, p. 24-25.

Older Angaur limestone

See Angaur (Older and Younger) limestone.

Oldman formation

Upper Cretaceous: Alberta, Canada.

L. S. Russell and R. W. Landes, 1940, Canada Geol. Survey Mem. 221, p. 62-72. 

Old Ocean shale

Oligocene: Texas (subsurface).

Alexander Deussen and K. D. Owen, 1939, Am. Assoc. Petroleum Geologists Bull., v, 23, 

no. 11, p. 1634.

Oldsmar limestone

Eocene, lower: Florida (subsurface).

P. L. Applin and B. R. Applin, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, 

no. 12, p. 1681, 1698-1701.

Old Tom formation

Triassic or older: British Columbia, Canada. 

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Olean drift

Pleistocene (Wisconsin) : New York and Pennsylvania.

Paul MacClintock and E. T. Apfel, 1944, Geol. Soc. America Bull., v. 55, no. 10,

p. 1152-1155.

Olequa Creek member (of Cowlitz formation) 

Eocene, upper: Washington. 

D. A. Henriksen, 1954, Dissert. Abs., v. 14, no. 12, p. 2316.

Olga quartz diorite

Precambrian: Quebec, Canada.

B. C. Freeman, 1938, J.our. Geology, v. 46, no. 5, p. 691. 

Olive Hill facies (of Muldraugh formation)

Lower Mississippian: Kentucky.

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 217-222.

Oliver syenite

Jurassic and/or younger: British Columbia, Canada. 

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Olokele formation

Pliocene(?): Hawaiian Islands (Kauai).

G. A. Macdonald, D. A. Davis, and D. C. Cox, 1954, Volcano Letter 526, p. 2 (flg. 1).

Olomoana volcanics

Pliocene(?): Samoa Islands (Tutuila).

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1286. 1288-1289. 

Olvido formation

Jurassic: Tamaulipas, Mexico.

Arnold Heim, 1940, Eclogae Geologicae Helvetiae, v. 33, no. 2, p. 320. 

426779 57 18
268 GEOLOGIC NAMES OF NORTH AMERICA

Olympic sand member (of Senora formation) 

Pennsylvanian: Oklahoma (subsurface).

A. W. Tillotson, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 11, p. I5?!» 

1585.

Omadi sandstone

Cretaceous: Nebraska. 

v G. E. Condra and E. C. Reed, 1943, Nebr. Geol. Survey Bull. 14, p. 18-19, 20.

Onate formation

Middle Devonian: New Mexico.

F. V. Stevenson, 1945, Jour. Geology, v. 53, no. 4, p. 222-227.

Onesquethaw stage

Lower or Middle Devonian (Ulsterian): New York.

G. A. Cooper and others, 1942, Geol. Soc. America Bull., v. 53, no. 12, pt. 1, p. 1733, 

Chart 4.

One Tree formation

Lower Cretaceous: British Columbia, Canada.

J. A. Jeletsky, 1950, Canada Geol. Survey Paper 50-37, p. 38.

Ooyahgah formation

Middle Cambrian: Northwest Territories (Devon Island), Canada. 

V. E. Kurtz, A. H. McNair, and D. B. Wales, 1952, Am. Jour. Sci., v. 250, no. 9, 

p. 646-648.

Opaoka complex

See Opaoka River complex.

Opaoka River complex

Precambrian: Quebec, Canada.

J. A. Dresser and T. C. Denis, 1949, Quebec Dept. Mines <Geol. Kept 20, v. 3, p. 31.

Open Door limestone 

Cambrian: Wyoming.

A. B. Shaw and C. E. DeLand, 1955, Wyo. Geol. Assoc. Guidebook 10th Ann. Field 

Conf., p. 38, 41, figs. 1, 2.

Opuntia formation

Jurassic: British Columbia, Canada.

C. H. Crickmay, 1930, Calif. Univ. Pub. Dept. Geol. Sci. Bull., v. 19, no. 2, p. 33, 35.

Oracle granite

Precambrian: Arizona.

N. P. Peterson, 1938, Ariz. Bur. Mines Bull. 144, Geol. Ser. 11, p. 8-9,10.

Ora Loma formation

See Oro Loma formation.

Oranda formation

Middle Ordovician: Virginia.

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 86-89.

Orchard Point conglomerate member (of Blakeley formation) 

Oligocene, middle: Washington. 

C. B. Weaver, 1937, Wash. [State] Univ. Pubs, in Geology, v. 4, p. 114.

Ord Mountain group

Triassic(?): California.

D. L. Gardner, 1940, Calif. Jour. Mines and Geology, v. 36, no. 3, p. 266-267.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 269

Orella member (of Brule formation) 

Oligocene: Nebraska.

C. B. Schultz and T. M. Stout, 1938, (aba) Geol. Soc. America Bull., v. 49, no. 12, 

pt. 2, p. 1921; 1955, Nebr. Univ. State Mus. Bull., v. 4, no. 2, p. 41-44.

Orellan age

Oligocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 11, pi. 1.

Ore Mountain diorite

Paleozoic (pre-late Devonian) : Maine.

S. S. Philbrick, 1936, Am. Jour. Sci., 5th ser., v. 31, no. 181, p. 9-10.

Orestimba group

Upper Cretaceous: California.

F. M. Anderson, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, pt. 2, p. 1868.

Orfordville formation

Middle Ordovician( ?) : New Hampshire and Vermont.

C. A. Chapman and others, 1938, Geologic map and structure sections of the Mascoma

quadrangle, New Hampshire (1:62,500) : N. H. Highway Dept. 

C. A. Chapman, 1939, Geol. Soc. America Bull., v. 50, no. 1, p. 132-134.

Orient formation 

Paleozoic: Utah. 

B. F. Stringham, 1942, Geol. Soc. America Bull., v. 53, no. 2, p. 271, pi. 1.

Orient granite porphyry 

Tertiary: Utah. 

B. F. Stringham, 1942, Geol. Soc. America Bull., v. 53, no. 2, p. 275.

Oriskany Falls member (of Oriskany sandstone) 

Lower Devonian: New York.

Charles Schuchert, [1943], Stratigraphy of the eastern and central United States: 

New York, John Wiley and Sons, p. 85.

Or man Lake limestone member (of Greenhorn formation) 

Upper Cretaceous: South Dakota and Wyoming. 

B. C. Petsch, 1949, S. Dak. State Geol. Survey Kept. Inv. 65, p. 9-10.

Oro Blanco conglomerate 

Mesozoic: Arizona. 

G. M. Fowler, 1938, Aria. Bur. Mines Bull. 145, Geol. Ser. 12, p. 121, pi. 32.

Orocopia schist

Precambrian: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 21.

Orocovis limestone

Upper Cretaceous: Puerto Rico.

E. C. Mitchell, 1954, Puerto Rico Univ. Agr. Expt. Sta. Tech. Paper 13, p. 47, 48.

Oro Loma formation

Pliocene, lower and middle: California.

F. F. Davis arid D. W. Carlson, 1952, Calif. Jour. Mines and Geology, v. 48, no. 3,

p. 212. 

L. I. Briggs, Jr., 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 167, p. 12, 46-48.

Oronoco formation

Cambrian: Virginia.

B. O. Bloomer and R. R. Bloomer, 1947, Jour. Geology, *v. 55, no. 2, p. 95-97,102-106.
270 GEOLOGIC NAMES OF NORTH AMERICA

Oro Plata granite porphyry 

Tertiary: Utah. 

B. P. Stringham, 1942, Geol. Soc. America Bull., v. 53, no. 2, p. 275.

Oropouche formation

Pleistocene: Trinidad, British West Indies.

E. W. Berry, 1925, U. S. Natl. Mus. Proc., v. 66, art. 21, p. 1, 2, 3.

Ortega formation

Tertiary: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103.

Ortega quartzite

Precambrian: New Mexico.

Evan Just, 1937, N. Hex. School Mines Bull. 13, p. 21-22, 43.

Orton gravels

Pleistocene: South Dakota.

B. C. Petsch and E. J. Bolin, 1950, Areal geology of the Fort Bennett quadrangle 

[geol. map, 1:62,500] : S. Dak. State Geol. Survey.

Orwell limestone

Middle Ordovician (Black River-Trenton) : Vermont.

W. M. Cady, 1945, Geol. Soc. America Bull., v. 56, no. 5, p. 524, 555, 556-557.

Osage lens (in Newcastle formation) 

Upper Cretaceous: Wyoming. 

R. M. Grace, 1952, Wyo. Geol. Survey Bull. 44, p. 14, 15.

Osgood Mountain quartzite

Lower Cambrian (?) : Nevada.

H. G. Ferguson, S. W. Muller, and E. J. Roberts, 1951, Geology of the Winnemucca 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 11].

Osila sand

Cretaceous or Eocene: California.

F. C. Hodges and E. R. Murray-Aaron, 1943, Calif. Oil Fields, v. 29, no. 1, p. 14, pi. 6

[1944]. 

C. E. Leach, 1948, in Structure of typical American oil fields: Tulsa, Okla., Am.

Assoc. Petroleum Geologists, v. 3, p. 34.

Osisko Lake rhyolites

Precambrian: Quebec, Canada.

H. J. Conolly and R. C. Hart, 1936, Canadian Inst. Mining and Metallurgy Trans., 

v. 39, p. 11.

Oso beds

Precambrian (Chuaran) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 112.

Osobb formation

Upper Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Ostrander member (of Dakota formation) 

Lower Cretaceous (Dakota) : Minnesota. 

C. R. Stauffer and G. A. Thiel, 1941, Minn. Geol. Survey Bull. 29, p. 103.

Ostrea limestone

Upper Cretaceous: Jamaica, British West Indies. 

L. J. Chubb, 1955, Geol. Mag., v. 92, no. 3, p. 183.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 271

O'Sullivan member (of Mannville formation)

Lower Cretaceous: Alberta, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1615.

Otates horizon (of Tamaulipas limestone) 

Middle Cretaceous: Tamaulipas, Mexico.

J. M. Muir, 1936, Geology of the Tampico region, Mexico: Tulsa, Okla., Am. Assoc. 

Petroleum Geologists, p. 27-28.

Otoe redbed member (of Wellington formation) 

Permian: Oklahoma. 

G. O. Raasch, 1941, (abs.), Geol. Soc. America Bull., v. 52, no. 12, pt 2, p. 1928.

Otoe shale member (of Friedrich formation)

Pennsylvanian (Virgil) : Nebraska and Iowa.

G. E. Condra and E. C. Reed, 1938, Nebr. Geol. Survey Paper 12, p. 9.

Ouareau transition beds

Middle Ordovician (Black River): Quecbec, Canada. 

V. J. Okulitch, 1939, Am. Jour. ScL, v. 237, no. 2, p. 83.

Outerson basalts

Pliocene: Oregon.

T. P. Thayer, 1936, Jour. Geology, v. 44, no. 6, p. 705, 706, 709 (fig. 2).

Outlaw formation

Lower Cretaceous: Arizona.

H. E. Enlows, 1955, Geol. Soc. America Bull., v. 66, no. 10, p. 1217.

Oveja formation

Precambrian (Kwaguntan) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107,113.

Overall limestone member (of Admiral formation) 

Permian (Wolfcamp age) : Texas. 

R. C. Moore in A. K. Miller and Walter Youngquist, 1947, Kans. Univ. Paleont. Contr.

2, Mollusca, art. 1, p. 1 (footnote). 

R. C. Moore, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 80.

Overland Mountain granite 

Precambrian: Colorado. 

J. M. Bray, 1942, Geol. Soc. America Bull., v. 53, no. 5, p. 770.

Ovid formation

Upper Cambrian: Idaho and Utah.

C. D. Walcott, 1925, Smithsonian Misc. Coll., v. 75, no. 3, p. 96,104,105.

E. O. Ulrich and G. A. Cooper, 1938, Geol. Soc. America Special Paper 13, p. 25.

Owego shale member (of Cayuta monothem)

Upper Devonian (Chautauquan) : Pennsylvania.

K. E. Caster, 1938, Jour. Paleontology, v. 12, no. 1, p. 45 (flg. 7), 47.

Owl Canyon formation

Permian: Colorado and South Dakota.

G. E. Condra, E. C. Reed, and O. J. Scherer, 1940, Nebr. GeoL Survey Bull. 13, p. 2, 4, 

19, 45.

Owl Mountain glacial substage

Pleistocene (pre-Wisconsin) : Colorado.

D. F. Eschman, 1952, (abs.) Geol. Soc. America Bull., v. 63, no. 12, pt. 2, p. 1380; 

1955, Jour Geology, v, 63, no, 3, p. 201-203.
272 GEOLOGIC NAMES OF NORTH AMERICA

Oxarart member (of Bearpaw formation)

Upper Cretaceous: Saskatchewan, Canada.

G. M. Furnival, 1941, Royal Soc. Canada Trans., v, 35, sec. 4, p. 60-63.

Oxbow Creek basalt

Miocene and/or Pliocene: Wyoming.

A. D. Howard, 1937, Geol. Soc. America Special Paper 6, p. 77-T9.

Oxford formation

Lower Ordovician (Beekmantown): Ontario, Canada.

A. B. Wilson, 1937, Royal Soc. Canada Trans., ser. 3, v. 31, sec. 4, p. 49, 52.

Oxford group

Precambrian: Manitoba, Canada.

J. F. Wright, 1932, Canada Geol. Survey Summ. Rept 1931, pt. C, p. 9-11.

Paakea basalt

Pleistocene (?): Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Steams and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 230, 251-252.

Pablo formation

Permian (?): Nevada.

H. G. Ferguaon and S. H. Cathcart, 1954, U. S, Geol. Survey Geol. Quadrangle Map 

GQ40.

Pacheco group

Upper Cretaceous: California.

N. L. Taliaferro, 1943, Calif. Dept Nat. Res., Div. Mines Bull. 118, pt 2, p. 131 

[preprint 1941],

Pacheta member (of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 12,14.

Pachuta marl member (of Yazoo clay)

Eocene, upper (Jackson group): Alabama.

G. E. Murray, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 10, p. 1838,

1839 (footnote). 

L. D. Toulmin, P. E. LaMoreaux, and C. R. Lanphere, 1951, Ala. Geol. Survey Special

Rept. 21, p. 120-122, pi. 3.

Pacific muck

Pleistocene and Recent: Panama Canal Zone.

[T. R. Thompson], 1943, Panama Canal, Special Eng. Div., 3d Locks ProJ., pt. 2,

chap 3, p. 23-24. 

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, table 2.

Packard Ranch member (of Supai formation) 

Pennsylvanian: Arizona. 

R. L. Jackson, 1961, Plateau, v. 24, no. 2, p. 87-88, 91.

Packwood gravels

Pliocene to Pleistocene: California.

M, D; Crittenden, Jr., 1951, Calif. Dept Nat. Res., Div. Mines Bull. 157, p. 42-43, 

pi. 1 (geol. map).

Pacoima formation

Pleistocene, upper: California.

G. B. 'Oakesfcott, 1952, Petroleum World* v. 49, no, 1, p. 21 (map;), 22.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 273

Paddy member (of Peace River formation) 

Lower Cretaceous: Alberta, Canada. 

P. C. Badgley, 1952, Canada Geol. Surrey Paper 52-11, p. 8.

Padilla limestone

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 121, 123.

Pagan limestone

Recent: Mariana Islands (Pagan).

Kisaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 46, table 4 [English translation in library of D. S. Geol. Survey, p, 65].

Pago volcanic series

Pliocene and Pleistocene (?) : Samoa Islands (Tutuila).

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1286, 1290-1299.

Pahrump series

Precambrian: California.

D. F. Hewett, 1940, Washington Acad. Sci. Jour., v. 30, no. 6, p. 239-240.

Painted formation

Middle Ordovician(?) : Northeast Greenland.

A. B. Cleaves and B. F. Fox, 1935, Geol. Soc. America Bull., v. 46, no. 3, p. 476, pi. 43.

Painted Hill formation 

Pliocene: California. 

C. R. Alien, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, map sheet 20.

Painted Rock formation

Miocene, lower: California.

T. W. Dibblee, Jr., 1952, in AAPG, 'SEPM, SEG, Joint Ann. Meeting Guidebook, p., 82.

Paint Pot Crater flow 

Recent: California. 

C. A. Anderson, 1941, Calif. Univ. Dept. Geol. Sei. Bull., v. 25, no. 7, p. 371.

Paint River greenstones

Precambrian (Huronian) : Michigan.

H. M. Martin, 1936, The centennial geological map of the northern peninsula of 

Michigan (1:500,000) : Mich. Geol. Survey Div. Pub. 39 (Geol. Ser. 33).

Pajarito lavas

Mesozoic(?): Arizona.

B. P. Webb and K. C. Coryell, 1954, D. S. Atomic Energy Comm. RME-2009, p. 8, pi. 1.

Pajarito shale member (of Purgatoire formation) 

Lower Cretaceous: New Mexico.

Ernest Dobrovolny and C. H. Summerson, 1946, TJ. S. GeoL Survey Oil and Gas Inv. 

Prelim. Map 62, sheet 1.

Pajaritos [formation]

Miocene, middle: Istmo de Tehauntepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexieana Bol., tomo 9, no. 5, correlation chart.

Pakoon limestone

Permian (Wolfcampian): Arizona.

A. H. McNair, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 3, p. 524-525.

Palao limestone

See Palau limestone.
274 GEOLOGIC NAMES OF NORTH AMERICA

Palatine Bridge limestone member (of Tribes Hill formation) 

Lower Ordovician (lower Canadian) : New York. 

D. W. Fisher, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 76 (fig. 2), 85-87.

Palau limestone

Pleistocene: Caroline Islands (Babelthaup).

Risaburo Tayama, 1935, Topography, geology, and coral reefs of the Palau Islands: 

Tohoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no. 18, 

p. 14, 39 [English translation in library of U. S. Geol. Survey] ; 1939, Japanese 

Jour. Geology and Paleontology Trans. and Abs., nos. 1-2, Abs., p. 29.

Palikea formation

Pleistocene: Hawaiian Islands (Kauai).

G. A. Maedonald, D. A. Davis, and D. C. Cox, 1954, Volcano Letter 526, p. 3.

Palliser formation

Devonian: Alberta, Canada.

G. S. Hume and H. H. Beach, 1941, Canada Geol. Survey Paper (Prelim. Map) 41-8.

Palmar formation

Lower Cretaceous: Senora, Mexico.

R. E. King, 1939, Geol. Soc. America Bull., v. 50, no. 11, p. 1660-1661.

Palmarolle granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 

166, p. 129.

Palm Canyon complex

Paleozoic or older: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 21-25.

Palmerton sandstone

Middle Devonian: Pennsylvania.

F. M. Swartz in Bradford Willard, F. M. Swartz, and A. B. Cleaves 1939, Pa. Geol. 

Survey, ser. 4, Bull. G 19, p. 52, fig. 17.

Palmetto type granite

Paleozoic (epi-Paleozoic) : Georgia.

G. W. Crickmay, 1952, Ga. Geol. Survey Bull. 58, p. 40, 44.

Palmiste clays

Pliocene: Trinidad, British West Indies.

M. E. Lehner, 1935, [France] Office national des combustibles liquides Annales,

10e annge, no. 4, p. 717 (table).

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1451 

(chart).

Palm Park formation

Oligocene: New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 114, 

120-121.

Palms granite

Precambrian: California.

W. J. Miller, 1938, Geol. Soc. America Bull., v. 49, no. 3, p. 421-424.

Palmyra limestone member (of Friedrich formation) 

Pennsylvanian (Virgil) : Nebraska and Iowa. 

G. E. Condra and E. C. Eeed, 1938, Nebr. Geol. Survey Paper 12, p. 9.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 275

Palo Alto formation

Oligocene: Tamaulipas, Mexico.

Manuel Alvarez, Jr., 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2, p. 365.

Palo Seco formation

Miocene: Trinidad, British West Indies.

R. A. Liddle, [1928], the geology of Venezuela and Trinidad: Tort Worth, Tex., J. P.

MacGowan, p. 450-453. 

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1445,

1451 (chart).

Palzo sandstone

Pennsylvanian: Illinois.

J. M. Weller, L. G. Henbest, and C. 0. Dunbar in C. O. Dunbar and L. G. Henbest, 1942, 

111. State Geol. Survey Bull. 67, p. 10,15 (fig. 2) [1943].

Pamoranes beds (in San Fernando formation) 

Miocene: Tamaulipas, Mexico.

Ramiro Robles Ramos, 1942, Irrigacifin en Mexico, v. 23, no. 3, p. 45 (correlation 

chart).

Pamour conglomerate

Precambrian: Ontario, Canada.

Peter Price and R. C. E. Bray, 1948, in Structural geology of Canadian ore deposits : 

Canadian Inst. Mining and Metallurgy, p. 559.

Pampa schist

Jurassic or older: California.

T. W. Dibblee, Jr., and C. W. Chesterman, 1953, Calif. Dept. Nat. Res., Div. Mines 

Bull. 168, p. 12, 18-22.

Pando porphyry

Tertiary, lower: Colorado.

Ogden Tweto, 1951, Geol. Soc. America Bull., v. 62, no. 5, p. 510. 

Paniau volcanic series

Pliocene (?) : Hawaiian Islands (Niihau). 

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 90, 91.

H. T. Stearns in H. T. Stearns and G. A. Macdouald, 1947, Hawaii Div. Hydrography 

Bull. 12, p. 18-19.

Panola granite

Age not given: Georgia.

L. A. Herrmann, 1954, Ga. Geol. Survey Bull. 61, p. 85.

Panther Canyon formation

Middle Triassic: Nevada.

H. G. Ferguson, S. W. Muller, and R. J. Roberts, 1951, Geology of the Winnemucca 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 11].

Papaskwasati group

Precambrian: Quebec, Canada.

J. M. Neilson, 1951, Quebec Dept. Mines Prelim. Rept. 254, p. 6.

Papatele trachyte

Pliocene or Pleistocene, lower: Samoa Islands (Tutuila).

R. A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 106-108, 129-130.

Papel Blanco shale (in Puente formation) 

Miocene, upper: California.

M. L. Krueger, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 363. 

A. 0. Woodford, T. G. Moran, and J. S. Shelton, 1946, .Am. Assoc. Petroleum Geologists 

Bull., v. 30, no. 4, p. 521.
276 GEOLOGIC NAMES OF NORTH AMEKICA

Paradise member (of Cipero formation)

Oligocene: Trinidad, British West Indies.

R. M. Stainforth, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 7, 

p. 1300-1301.

Paraje Solo formation

Miocene, middle: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 280, 284, correlation 

chart.

Parashant tongue

Lower and/or Middle Cambrian: Arizona.

B. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 98-99.

Pardee gneiss

Precambrian: Newfoundland, Canada.

J. O. Puller, 1941, Newfoundland Geol. Survey Bull. 15, p. 15.

Pardonet member (of Schooler Creek formation) 

Triassie: British Columbia, Canada. 

F. H. McLearn, 1940, Royal Soc. Canada Trans., ser. 3, v. 34, sec. 4, p. 67.

Parham gabbro

Precambrian: Ontario, Canada.

W. G. Miller, 1899, Ontario Bur. Mines Rept., v. 8, pt. 2, p. 228-229. 

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.

Park City volcanics

Oligocene, lower: Utah.

A. J. Eardley, 1955, Utah Geol. Soc. Guidebook 10, p. 38, fig. 9.

Parker Hill sandstone member (of Stanley formation) 

Pennsylvania!!: Arkansas.

N. H. Steam in J. M. Hansell and J. C. Reed, 1935, Am. Inst. Mining and Metall. Eng. 

Trans., v. 115, p. 245 ; 1936, Econ. Geology, v. 31, no. 1, p. 15-16.

Parks formation

Pennsylvanian (Lampasas) : Texas (subsurface).

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 86.

Parlatuvier formation

Cretaceous (?): Tobago, British West Indies.

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 800-809.

Parras shale

Upper Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1132-1133.

Parritas formation

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1117-1119.

Parsonsburg sand

Pleistocene (late Wisconsin): Maryland.

W. C. Rasmussen and T. H. Slaughter, 1955, Md. Dept. Geology, Mines and Water 

Res. Bull. 16, p. 114-115, 118-119.

Parsons Pond beds

Ordovician: Newfoundland, Canada.

Rudolf Ruedenmnn, 1947, Geol. Soc. America Mem. 19, p. 59.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 277

Partridge granite

Precambrian: Newfoundland, Canada.

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 16.

Partridge Island formation

Upper Carboniferous: New Brunswick, Canada.

A. 0. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 117-118.

Parunuweap formation

Pliocene(?): Utah.

H. B. Gregory, 1945, Jour. Geology, v. 53, no. 2, p. 110-115.

Par Value member (of Montoya dolomite) 

Upper Ordovician: New Mexico. 

L. P. Entwistle, 1944, N. Mex. State Bur. Mines Min. Res. Bull. 19, p. 17, 18.

Pascalis-Tiblemont granodiorite

Precambrian (Archean): Quebec, Canada.

A. S. MacLaren, 1950, Canada Geol. Surrey Map 997A.

Paseo Hondo formation

Permian: Chiapas, Mexico.

M. L. Thompson and A. K. Miller, 1944, Jour. Paleontology, v. 18, no. 6, p. 486.

Paso Mono limestone

Upper Cretaceous: Tabasco, Mexico.

Ramiro Roblea Ramos, 1942, IrrigaciCn en Mexico, v. 23, no. 3, p. 45 (correlation

chart). . G. P. Salas, 1949, Soc. GeolCgica Mexicana Bol., tomo 14, p. 54.

Paso Real formation

Oligocene to Miocene: Cuba.

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 283-284.

Passaconway syenite

Carboniferous (?) (White Mountain magma series): New Hampshire. 

A. P. Smith and others, 1938, Geologic map and structure sections of the Mt. Chocorua 

quadrangle, New Hampshire (1: 62,500) : N. H. Highway Dept.

Pass Peak conglomerate

Eocene, middle: Wyoming.

A. J. Eardley and others, 1944, Hoback-Gros Ventre-Teton Field Conference [geologic

map]. Privately printed. 

I/eland Horberg, Vincent Nelson, and Victor Church, 1949, Geol. Soc. America Bull.,

v. 60, no. 1, p. 187, 190.

Pastoria sand member (of White Bluff formation) 

Eocene (Jacksonian) : Arkansas. 

L. J. Wilbert, Jr., 1953, Ark. Div. Geology Bull. 19, p. 40-56.

Patagonia group

Lower Cretaceous: Arizona.

A. A. Stoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 297 (table) ; 1949, 

Geol. Soc. America Mem. 38, p. 30, 53.

Patagonia limestone

Paleozoic (Devonic) : Arizona.

[C. E.] Keyes, 1942, Pan-Am. Geologist, v. 77, no. 3, p. 227,228.
278 GEOLOGIC NAMES OF NORTH AMERICA

Patoot beds

Upper Cretaceous (Senonian) : Northwest Greenland.

Oswald Heer, 1883, Meddel. om Gr0nland, hefte 5, pt. 3, p. 83, 112-118; pt. 5,

p. 226-228. 

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 258-262.

Patterson Ranch group

Ordovician: Oklahoma.

C. E. Decker, 1942, Okla. Acad. Sci. Proc., v. 22, p. 153-155.

Patula arkose

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 121.

Pauba formation

Pleistocene: California.

J. F. Mann, Jr., 1955, Calif. Dept. Nat. Res., Div. Mines Special Kept. 43, p. 9, 13-14.

Pauwalu basalt

Pleistocene (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Maedonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 94, 95.

Pavant flow

Pliocene, upper, or Pleistocene, lower: Utah. 

G. B. Maxey, 1946, Am. Jour. Set, v. 244, no. 5, p. 328.

Pavlof volcanics

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Rept. 2, pt. 2, pi. 2 (geol. map).

Pavlof Sister volcanics 

Quaternary: Alaska.

G. C. Kennedy and H. H. Waldron, 1947, TJ. S. Geol. Survey Alaskan Volcano Inv. 

Rept. 2, pt. 2, pi. 2 (geol. map).

Pawtuckaway complex

Mississippian( ?) (White Mountain magma series) : New Hampshire.

C. J. Roy and Jacob Freedman, 1944, Geol. Soc. America Bull., v. 55, no. 7, p. 908-914.

Paxton Creek conglomerate (in Martinsburg shale) 

Ordovician: Pennsylvania. 

Bradford Willard and A. B. Cleaves, 1938, Pa. Geol. Survey, ser. 4, Bull. G 8, p. 5, 6.

Paynes shale and sandstone member (of Panoche group) 

Upper Cretaceous: California.

I. F. Wilson, 1943, Calif. Jour. Mines and Geology, v. 39, no. 2, p. 201-202, 226 

(fig. 5).

Paynes Hammock sand

Miocene: Alabama and Mississippi.

F. S. MacNeil, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 9, p. 1346-1354.

Peace Valley beds

Pliocene, middle: California.

J. C. Crowell, 1950, Am. Assoc. Petroeum Geologists Bull., v. 34, no. 8, p. 1629 (fig. 5), 

1631-1632, 1637.

Peach Springs member (of Muav formation) 

Lower and/or Middle Cambrian: Arizona. 

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 99-101.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 279

Peanut Peak member (of Chadron formation) 

Oligocene, lower: South Dakota. 

John Clark, 1954, Carnegie Mus. Annals, v. 33, art. 11, p. 197-198.

Pearl Lake porphyry

Precambrian (Algoman) : Ontario, Canada.

H. S. Robinson, 1923, Econ. Geology, v. 18, no. 7, p. 758, 760.

G. B. Longford and E. G. Hancox, 1936, Econ. Geology, v. 31, no. 6, p. 601.

Pearsall formation

Lower Cretaceous (Comanche series) : Texas (subsurface). 

K. W. Imlay, 1944, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 3.

Pearson formation

Precambrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 377A.

Pearson glauconite member (of Sabinetown formation) 

Eocene, lower (Wilcox) : Louisiana and Texas.

Richard Wasem and L. J. Wilbert, Jr., 1943, Jour. Paleontology, v. 17, no. 2, p. 182

(footnote). 

G. E. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull.,

v. 29, no. 1, p. 63.

Pease River group

Permian (Leonard series) : Texas.

H. C. Fountain, 1939, in Am. Assoc. Petroleum Geologists Ball., v. 23, no. 5, p. 764.

Robert Roth, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 8, p. 1412-1413.

Peasley limestone

Middle Cambrian (Albertan) : Nevada.

H. E. Wheeler, 1940, Nev. Univ. Bull., Geology and Mining Ser., no. 34, p. 17-27.

Peasley Pond conglomerate and sandstone 

Silurian: Quebec, Canada. 

T. H. Clark, 1936, Canadian Field Naturalist, v. 50, no. 3, p. 33.

Pebble Island conglomerate

Precambrian: Saskatchewan, Canada.

A. M. Christie, 1952, Canada Geol. Survey Mem. 269, p. 13-14.

Peckham formation

Pleistocene, upper: California.

C. J. Leith, 1949, Calif. Dept. Nat. Res., Div. Mines Bull. 147, p. 26-27.

Peculiar shale (in Puente formation) 

Miocene, upper: California.

M. L. Krueger, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, p. 363. 

A. O. Woodford, T. G. Moran, and J. S. Shelton, 1946, Am. Assoc. Petroleum Geologists 

Bull., v. 30, no. 4, p. 521.

Pedernal chert member (of Abiquiu tuff) 

Miocene (?) : New Mexico. 

F. S. Church and J. T. Hack, 1939, Jour. Geology, v. 47, no. 6, p. 618, pt. 3, 622.

fPedemales dolomite member (of Wilberns formation) 

Upper Cambrian: Texas.

Frederick Romberg and V. E. Barnes, 1944, Geophysics, v. 9, no. 1, p. 88. 

P. E. Cloud, Jr., V. E. Barnes, and Josiah Bridge, 1946, Tex. Univ. Bur. Econ, Geology 

Pub. 4301, p. 150, 155 [1945].
280 GEOLOGIC NAMES OF NORTH AMERICA

Pedlar formation

Precambrian: Virginia.

R. O. Bloomer and H. J. Werner, 1955, Geol. Soc. America Bull., v. 66, no. 5, p. 582.

Pedregosa member (of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 8-9,17-18.

Pedro Miguel agglomerate member (of Panama formation) 

Miocene, lower: Panama Canal Zone.

[T. F. Thompson], 1943, Panama Canal, Special Eng. Div., 3d Locks ProJ., pt. 2, chap.

3, p. 17-18. 

W. P. Woodring and T. F. Thompson, 1949, Am, Assoc. Petroleum Geologists Bull.,

v. 33, no. 2, p. 242.

Peebles granite facies (of Ogishke conglomerate) 

Precambrian (Knife Lake) : Minnesota.

J. T. Stark and V. G. Sleight, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1032 

(table 2), 1034-1035.

Pe Ell volcanics member (of Cowlitz formation) 

Eocene, upper: Washington. 

D. A. Henriksen, 1954, Dissert. Abs., v. 14, no. 12, p. 2316.

Peery limestone member (of Cliffleld formation) 

Middle Ordovician: Virginia. 

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 863-864.

Peewatai Lake granite

Precambrian (Archean) : Ontario, Canada. 

T. L. Tanton, 1938, Canada Geol. Survey Map 432A.

Pejepscot gneiss

Cambrian (?) : Maine.

L. W. Fisher, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 81; 1941, Geol. Soc. 

America Bull., v. 52, no. 1, p. 113-115, table 1.

Pekisko member (of Livingstone formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglass, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Peleliu limestone

Pleistocene: Caroline Islands (Peleliu, Ngemelis, and Angaur).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in 

library of D. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan 

Hydrog. Office Bull., v. 11, p. 67, table 4 [English translation in library of U. S. 

Geol. Survey, p. 80].

Pelican Rock marls

Eocene, middle: Trinidad, British West Indies.

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, No. 11, p. 1443, 

1451 (chart).

Pelier schist

Paleozoic (?) : Virgina.

W. R. Brown, 1951, (abs.) Geol. Soc. America Bull., v. 62, no. 12, pt 2, p. 1547: 

1953, JCy. Geol, Survey, ser. 9, Special Pub. 1, [p. 9] (fig. 1).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 281

Pembroke eolianite

Pleistocene: Bermuda Islands.

R. W. Sayles, 1931, Am. Acad. Arts and Sci. Proc., v. 66, no. 11, p. 395.

Pembroke formation

Mississippian: Nova Scotia, Canada.

L. J. Weeks, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-26.

Pemmican River formation

Upper Cambrian (?) (Lower Ozarkian?) : North Greenland. 

Christian Poulsen, 1927, Meddel. om Gr0nland, bind 70, nr. 2, p. 244, 341.

Pefial shales

See Pefial Quarry horizon.

Pefial Quarry horizon (of Palo Seco formation)

Eocene, lower and middle: Trinidad, British West Indies.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Port Worth, Tex., J. P. 

MacGowan, p. 450-453.

Pendejo tongue (of Abo formation)

Permian (Wolfcampian): New Mexico.

L. C. Pray, 1954, N. Mex. Geol. Soe. Guidebook 5th Field Conf., p. 93.

Pendleton formation

Eocene, lower (Wilcox): Texas and Louisiana.

Richard Wasem and L. J. Wilbert, Jr., 1943, Jour. Paleontology, v. 17, no. 2, p. 

182-186.

Pendleton Ferry formation

Eocene (Wilcox): Texas and Louisiana.

G. E. Murray, Jr., and E. P. Thomas, 1945, Am. Assoc. Petroleum Geologists Bull., 

v. 29, no. 1, p. 56 (footnote).

Pendola shale

Upper Cretaceous: California.

B. M. Page, J. G. Marks, and G. W. Walker, 1951, Am. Assoc. Petroleum Geologists 

Bull., v. 35, no. 8, p. 1743-1744.

Pend Oreille andesite

See Pend Oreille Valley andesite.

Pend Oreille Valley andesite

Tertiary, upper (?): Washington.

M. C. Schroeder, 1949, (abs.) Northwest Science, v. 28, no. 1, p. 39-40.

Penitas formation

Pliocene: I Costa Rica].

H. N. Coryell and R. W. Mossman, 1942, Jour. Paleontology, v. 16, no. 2, p. 233.

Penitence Hill marl (of Navet formation)

Eocene, lower or middle: Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special Pub. 

24, p. 2, 3.

Penitentiary member (of Stony Mountain formation) 

Upper Ordovician (Richmond) : Manitoba, Canada. 

V. J. Okulitch, 1943, Royal Soc. Canada Trans., sec. 4, v. 37, p. 60.

Penn Yan tongue (of West River shale) 

Upper Devonian: New York. 

W. L. Grossman, 1944, Geol. Soc. America Bull., v. 55, no. 1, p. 64-65.
282 j GEOLOGIC NAMES OF NORTH AMEKICA

Penon formation

Eocene, middle: Cuba.

Jorge Brodermann, 1945, Soc. Cubana Ingenieros Eev., v. 42, no. 1, p. 144.

Pentecote granite

Precambrian(?) : Quebec, Canada.

Carl Faessler, 1942, Quebec Dept. Mines Geol. Kept. 11, p. 18-19.

Pentoga greenstones

Precambrian (Huronian) : Michigan.

H. M. Martin, 1936, The centennial geological map of the northern peninsula of Michigan (1: 500,000) : Mich. Geol. Survey Div. Pub. 39 (Geol. Ser. 33).

Penuela limestone

Cretaceous (Senonian) : Vera Cruz, Mexico.

Fernando Lozano Romen, 1955, AsociaciCn Mexicana Gedlogos Petroleros Bol., v. 7, nos. 

1-2, p. 20, table facing p. 52.

Peoria silt member (of Sanborn formation) 

Pleistocene (Peorian) : Kansas. 

J. C. Frye and O. S. Fent, 1947, Kans. State Geol. Survey Bull. 70, p. 45-50.

Perce" Rock beds

Lower Devonian: Quebec, Canada.

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines Geol. Report. 20, p. 236.

Perdido formation

Mississippian: California.

J. F. McAllister, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 25, p. 22-25.

Peregrina formation

Mississippian: Tamaulipas, Mexico.

Arnold Heim, 1940, Eclogae Geologicae Helvetiae, v. 33, no. 2, p. 318.

Pereira shale member (of Alhambra formation) 

Eocene, upper: California. 

C. E. Weaver, 1953, Wash. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 55-56.

Perilla member (of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 9,17.

Perini Hill flows

Quaternary: California.

J. C. Brice, 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 166, p. 12, 36, 41, pi. 1.

Permenters Farm beds

Miocene, middle: Florida. 

' R. H. Smith, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 2, p. 269-274.

Perote member (of Providence sand) 

Upper Cretaceous: Alabama. 

D. H. Eargle, 1948, Southeastern Geol. Soc. [Guidebook] 6th Field Trip, p. 44, 51-53.

Perry Branch siltstone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 189-191.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 283

Perry Farm cyclothem (including Perry Farm shale) 

Pennsylvanian (Des Moines) : Kansas.

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 339-340; 1945, Bull. 

58, p. 45-46, 69.

Perrysburg formation

Upper Devonian : New York.

J. F. Pepper and Wallace de Witt, Jr., 1951, U. S. Geol. Survey Oil and Gas Inv. Chart 

OC45.

Persimmon Gap shale or formation 

Upper Ordovician: Texas. 

J. L. Wilson, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 12, p. 2462, 2470.

Pescado tongue (of Mancos shale) 

Upper Cretaceous: New Mexico. 

W. S. Pike, Jr., 1947, Geol. Soc. America Mem. 24, p. 9, 34-35.

Peshastin glacial stage

Pleistocene: Washington.

B. M. Page, 1939, Jour. Geology, v. 47, no. 8, p. 787-795.

Petaca schist phase (of Ortega quartzite) 

Precambrian: New Mexico. 

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 43.

Petapa [formation]

Cretaceous (Neocomian) : Chiapas, Mexico.

G. P. Salas, 1949, Soc. Geol. Mexicana Bol., tomo 14, p. 55 (table 1).

Peten formation

Pre-Upper Triassic: Honduras.

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 25.

Pet6n marls and limestones

Upper Cretaceous(?), Eocene (?), or Oligocene(?) : Guatemala, British

Honduras, and Mexico. 

Hakon Wadell, 1926, Sydsvenska geografiska sallskapets Arsbok 1926 (Meddelanden

fran Lunds universitets geografiska inst., ser. C, no. 17), p. 149, 151, fig. 2; 1938,

in S. G. Morley, Carnegie Inst. Washington Pub. 437, v. 4, p. 344, 345. 

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic : Heidelberg, Band

8, Abt. 4a, Heft 29, p. 76-77.

Petermann series

Precambrian (?) : Northeast Greenland.

J. M. Wordie and W. F. Whittard, 1930, Geol. Mag., v. 67, p. 148-152.

Pethei formation

Precambrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 377A.

Petit Jardin formation

Middle Cambrian: Newfoundland, Canada.

Christina Lochman, 1938, Jour. Paleontology, v. 12, no. 5, p. 463.

Petlalcingo limestone

Upper Cretaceous: Oaxaca, Mexico.

G. P. Salas, 1949, Asociacidn Mexicana GeOlogos Petroleros Bol., v. 1, no. 2, p. 114-118.

426779 57 19
284 GEOLOGIC NAMES OF NORTH AMERICA

Petrified Forest member (of Chinle formation)

Upper Triassic : Utah, Arizona, and New Mexico.

G. B. Maxey, 1946, Am. Jour. Sci., v. 244, no. 5, p. 337.

H. E. Gregory, 1950, TL S. Geol. Survey Prof. Paper 220, p. 52, 67-68 [1952].

Peyto limestone member (of St. Piran sandstone) 

Lower Cambrian: British Columbia, Canada. 

Franco Basetti, 1951, Smithsonian Misc. Coll., v. 116, no. 5, p. 55-56.

Phantom migmatite

Precambrian (Archean) : Arizona.

lan Campbell and J. H. Maxson, 1937, 17th Internat. Geol. Cong. Abs. of Papers, 

p. 65 (1939, Kept, v. 2, p. 260) ; 1938, Carnegie Inst. Washington Year Book 37, 

p. 363.

Phantom Island slate

Precambrian: Ontario, Canada.

F. J. Pettijohn, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 174, pi. 3.

Phelan limestone

Carboniferous (?) : Utah.

V. E. Peterson, 1942, Econ. Geology, v. 37, no. 6, p. 471 (table 1).

Philcot-Crossecho Lakes volcanics 

Precambrian: Ontario, Canada. 

W. D. Harding, 1951, Ontario Dept. Mines Ann. Kept., v. 59, pt. 4, p. 18-19.

Philippo limestone

See Hirippo limestone.

Picard shale member (of Nesson formation)

Jurassic: Subsurface in Montana and North Dakota, and Manitoba, Canada. 

J. W. Nordquist, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., p. 104, 105, 

fig. 2.

Pichagua limestone

Permian: Coahuila, Mexico.

Wilhelm Haack, 1914, Deutschen Geol. Gesell. Zeitschr., Band 66, p. 489, 502.

Pichucalco beds

Eocene or Oligocene: Tabasco and Chiapas, Mexico.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg, 

Band 8, Abt. 4a, Heft 29, pis. 5a, 5b.

Pico series

See Pico Peak series.

Pico Peak series

Cambrian (?) : Vermont.

H. E. Hawkes, Jr., 1941, Geol. Soc. America Bull., v. 52, no. 5, p. 653, 654, 657.

Picton limestone member (of Laventille formation) 

Jurassic: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

V. 20, no. 59, p. 31.

Picuris basalts

Precambrian: New Mexico.

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 23-24, 44.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 285

Picuris tuff

Tertiary (pre-Santa Fe) : New Mexico.

E. C. CabOt, 1938, Jour. Geology, v. 46, no. 1, p. 91.

Piedmont sandstone

Permian: Oklahoma.

Henry Schweer in O. E. Brown, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 

12, p. 1553 (fig. 9).

Piedras Atlas formation

Upper Cretaceous: California.

N. L. Taliaferro, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 132 

[preprint 1941].

Piegan group

Precambrian (Belt series) : Montana, and Alberta, Canada. 

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p. 1890- 

1892.

Pierce Estate sands

Oligocene: Texas (subsurface).

Alexander Deussen and It. D. Owen, 1939, Am. Assoc. Petroleum Geologists Bull., 

v. 23, no. 11, p. 1634.

Piermont member (of Albee formation) 

Ordovician(?) : New Hampshire.

J. B. Hadley and others, 1938, Geologic map and structure sections of the New Hampshire portion of the Mt. Cube quadrangle (1: 62,500>: N. H. Highway Dept. 

J. B. Hadley, 1942, Geol. Soc. America Bull., v. 53, no. 1, p. 126.

Pierre Point beds (of Ponte-a-Pierre formation)

Eocene, lower or middle: Trinidad, British West Indies.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., J. P. 

MacGowan, p. 446-447.

Pierreville clay

Pleistocene: Trinidad, British West Indies.

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 212, 213 [1952].

Pierreville member (of Be'cancour River formation) 

Ordovician: Quebec, Canada. 

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Kept. 204, p. 14-15.

Pierson glauconite

See Pearson glauconite member (of Sabinetown formation).

Pigeon gneiss

Precambrian: Newfoundland, Canada.

J. 6. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 14.

Pigeon Creek member (of Fernie formation) 

Jurassic: Alberta, Canada. 

M. B. B. Crockford, 1949, Alberta Research Council Rept. 52, p. 25, 27.

Piinaau basalt

Pleistocene (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 95, 96.
286 GEOLOGIC NAMES OF NORTH AMEKICA

Pika formation

Upper Cambrian: Alberta, Canada.

Charles Deiss, 1939, Geol. Soc. America Bull., v. 50, no. 6, p. 1008-1009.

Pike Arm formation

Silurian: Newfoundland, Canada.

W. H. Twenhofel and R. R. Shrock, 1937, Geol. Soc. America Bull., v. 48, no. 12, 

p. 1749, 1767.

Pikes Island conglomerate

Silurian: Newfoundland, Canada.

D. M. Baird, 1953, Newfoundland Geol. Survey Kept. 1, p. 13-14.

Pilar phyllite member (of Ortega formation) 

Precambrian: New Mexico. 

Arthur Montgomery, 1953, N. Mex. State Bur. Mines Min. Res. Bull. 30, p. 19-21.

Pilares monzonite

Age not stated : Sonora, Mexico.

W. R. Wade and Alfred Wandtke, 1920, Am. Inst. Mining and Metall. Engineers 

Trans., v. 63, p. 383.

Pilchuck clay member (of Vashon drift) 

Pleistocene: Washington. 

R. C. Newcomh, 1952, U. S. Geol. Survey Water-Supply Paper 1135, p. 19, pi. 1.

Pilier conglomerate and sandstone

Lower Mississippian: Nova Scotia, Canada.

Frederick Betz, Jr., 1948, Newfoundland Geol. Survey Bull. 24, p. 10.

Piliguilla conglomerate 

Pliocene: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 134 (correlation chart), pi. 10 (geol. map).

Pillage Bay sandstone (of Romaine formation)

Ordovician (Beekmantown) : Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 523, 524.

Pillar sandstones

Lower Ordovician : Quebec, Canada.

H. W. McGerrigle, 1954, Quebec Dept. Mines Geol. Rept. 62, p. 27.

Pillar Bluff limestone

Lower Devonian (Helderberg stage) : Texas.

V. E. Barnes, P. E. Cloud, Jr., and L. B. Warren, 1946, Tex. Univ. Bur. Econ. Geology 

Pub. 4301, p. 166-169 [1945].

Pilleys series

Ordovician (?) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 12-13.

Pilot cyclothem or formation

Pennsylvanian (Des Moines) : Kansas.

G. E. Abernathy, 1937, Kans. Geol. iSoc. Guidebook llth Ann. Field Conf., p. 18, 20, 

22 ; 1938, Kans. Acad. Sci. Trans., v. 41, p. 193, 195.

Pilot Knob fades (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 146-148,
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 287

Pilot Knob tuff

Upper Cretaceous: Texas

C. O. Durham, Jr., 1955, Corpus Christ! Geol. Soc. [Guidebook] Ann. Field Trip, 

March 11-12, [p. 58], pi. 10

Pine sand

Pleistocene: North Carolina.

B. W. Wells, 1944, Elisha Mitchell Sci. Soc. Jour., v. 60, no. 2, p. 131-132.

Pine Bluff volcanic zone (of Eagleford formation) 

Cretaceous: Texas.

R. T. Hazzard, 1939, Shreveport Geol. Soc. Guidebook 14th Ann. Field Trip, p. 139, 

140-141.

Pine Hill syenite

Precambrian: Quebec, Canada.

F. F. Osborne, 1933, Quebec Dept. Mines Ann. Kept. 1932, pt. E, p. 52.

Pine Island shale in Arkansas, Louisiana, and east Texas

Pine Island shale member (of Pearsall formation) in south Texas

Lower Cretaceous (Comanche series) : Subsurface in Arkansas, Louisiana,

and Texas. 

H. K. Shearer, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 6, p. 721,

722, 725. 

R. W. Imlay, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 10, p. 1447.

Pine Knob sandstone

Lower Mississippian (Oil Lake) : Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Rept. 126, p. 14 (footnote).

Pine Mountain porphyry 

Precambrian: Arizona. 

E. D. Wilson, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1139, pi. 2.

Pine Plains formation

Upper Cambrian: New York.

E. B. Knopf, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, p. 1212.

Pinery limestone member (of Cherry Canyon formation) 

Permian: Texas and New Mexico. 

P. B. King in A. K. Miller and W. M. Furnish, 1940, Geol. Soc. America Special

Paper 26, p. 9. 

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 582-583,

PL 2.

Pinesburg member (of Shippensburg formation)

Middle Ordovician (Bolarian) : Pennsylvania and Maryland.

L. C. Craig, 1949, Geol. Soc. America Bull., v. 60, no. 4, p. 715 (fig. 1), 718-722.

Pine Valley quartzite

Cambrian: Utah.

J. D. Forrester, 1937, Geol. Soc. America Bull., v. 48, no. 5, p. 638, pis. 2, 3.

Piney Creek alluvium

Recent: Colorado.

C. B. Hunt, 1954, U. S. Geol. Survey Bull. 996-C, p. 114-117.

Piney Point formation

Eocene (Jackson age) : Subsurface in Maryland, Delaware, and Virginia. 

E. G. Otton, 1955, Md. Dept. Geology, Mines and Water Res. Bull. 15, p. 85-88.
288 GEOLOGIC NAMES OF NORTH AMERICA

Pinkerton Trail limestone.

Pennsylvanian (Atoka and Des Moines) : Colorado and Utah. 

S. A. Wengerd and J. W. Strickland, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, 

no. 10, p. 2168-2169, fig. 7.

Pinnacles formation

Miocene (?) : California.

Philip Andrews, 1936, Calif. Univ. Pubs. Dept. Geol. Scl. Bull., v. 24, no. 1, p. 19, 

25, 26, map 1.

Pinole formation

Oligocene: Tamaulipas, Mexico.

Manuel Alvarez, Jr., 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2, p. 365.

Pinto gneiss

Precambrian: California.

W. J. Miller, 1938, Geol. Soc. America Bull., v. 49, no. 3, p. 419, 424-428.

Pinyon Ridge granodiorite

Jurassic (?) : California.

L. F. Noble, 1954, U. iS. Geol. Survey Geol. Quadrangle Map GQ 50.

Pioa breccia

Pliocene or Pleistocene, lower: Samoa Islands (Tutuila).

E. A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 100, 106, 129.

Pioa rhyolite

Pliocene or Pleistocene, lower: Samoa Islands (Tutuila).

E. A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 106-108,129-130.

Pioneer formation

Upper Triassic or Jurassic: British Columbia, Canada. 

C. E. Cairnes, 1937, Canada Geol. Survey Mem. 213, p. 16-18.

Pioneer group

Upper Cretaceous: California.

F. M. Anderson, 1938, (abs.) Geol. Soc. America Bull., v. 49, no. 12, pt 2, p. 1863

Pipeline shale '

Permian (Leonard-Guadalupe) : Texas.

W. C. Warren in P. B. King, N. D. Newell, and D. W. Boyd, 1955, Permian field conference to the Guadalupe Mountains: Soc. Econ. Paleontologists and Mineralogists, 

p. 11.

Piper formation

Middle Jurassic: Montana.

E. W. Imlay and others, 1948, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 32.

Pipestone Canyon formation 

Eocene (?) : Washington. 

J. D. Barksdale, 1948, Northwest Science, v. 22, no. 4, p. 165,175.

Piru formation

Eocene: California.

S. J. Kriz, 1955, Dissert. Abs., 1. 15, no. 3, p. 393.

Piru Gorge sandstone

Pliocene, middle: California.

D. I. Axelrod, 1950, Carnegie Inst. Washington Pub. 590, p. 169.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1036-1955 289

Pitcairn gneiss complex

Precambrian (Grenville): New York.

A. F. Buddington, 1939, Geol. Soc. America Mem. 7, p. 15-17.

Pittsburg formation

Carboniferous: Idaho and Oregon.

W. R. Wagner, 1945, Idaho Bur. Mines and Geology Pamph. 74, p. 4-5.

Pittsburg formation

Pleistocene: California.

C. F. Tolman, 1931, Calif. Dept. Public Works, Div. Water Res. Bull. 28, p. 354, 

pi. D-IX, D~X.

Pittsfield member (of Littleton formation) 

Lower Devonian: New Hampshire.

M. T. Heald, 1955, The geology of the Gilmanton quadrangle, New Hampshire: N. H. 

State Plan. Devel. Comm., p. 8,10.

Plainview sandstone member (of South Platte formation) 

Lower Cretaceous: Colorado. 

K. M. Waage", 1955, U. S. Geol. Survey Prof. Paper 274-B, p. 28-29.

Plaisance conglomerate

Eocene, upper: Trinidad, British West Indies.

G. A. Waring, 1926, Johns Hopkins Univ. Studies in Geology, no. 7, p. 44-45, pi. 6 

(geol. map).

Plancitos formation

Cretaceous: Honduras.

E. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 28.

Playas Peak formation

Lower Cretaceous (Bisbee group) : New Mexico.

S. G. Lasky, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 5, p. 534, fig. 2.

Pleasant Lake gabbro

Precambrian: New York.

A. F. Buddington, 1939, Geol. Soc. America Mem. 7, p. 59, 61.

Pleasants sandstone member (of Williams formation) 

Upper Cretaceous: California. 

W. P. Popenoe, 1937, Jour. Paleontology, v. 11, no. 5, p. 380.

Pleasant Valley member (of Cuyahoga formation) 

Mississippian: Ohio. 

F. T. Holden, 1941, 111. Acad. Sci. Trans., v. 34, no. 2, p. 172.

Pleasant View complex

Paleozoic and Mesozoic: California.

L. F. Noble, 1954, U. S. Geol. Survey Geol. Quadrangle Map GQ 50.

Pleasant View member (of Arapahoe-Denver formation) 

Tertiary: Colorado. 

L. W. LeEoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 100, 103-104.

Plum Brook shale 

Devonian: Ohio. 

G. A. Cooper, 1941, Washington Acad. Sci. Jour., v. 31, no. 5, p. 181.
290 GEOLOGIC NAMES OF NORTH AMERICA

Plum Road formation

Lower Cretaceous: Trinidad, British West Indies.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., J. P. 

MacGowan, p. 436-439.

Plutos Cave basalt

Recent: California.

Howel Williams, 1949, Calif. Dept. Nat. Res., Div. Mines Bull. 151, p. 42-43.

Plymouth Union series

Cambrian(?): Vermont.

H. B. Hawkes, Jr., 1941, Geol. Soc. America Bull., v. 52, no. 5, p. 653, 654, 657.

Pocatello formation

Precambrian: Idaho.

J. C. Ludlum, 1942, Jour. Geology, v. 50, no. 1, p. 89-90.

Pocaterra Creek member (of Blairmore formation) 

Lower Cretaceous: Alberta, Canada. 

J. A. Allan and J. L. Carr, 1947, Alberta Research Council Rept. 49, p. 28.

Poe evaporate member (of Nesson formation)

Jurassic: Subsurface in North Dakota and Montana, and Manitoba, Canada. 

J. W. Nordquist, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., p. 104-105, 

fig. 2.

Pohakuloa drift and stage

Pleistocene: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1939, (abs.) Geol. Soc. America Bull., v. 50, no. 12, pt. 2, p. 1942. 

C. K. Wentworth and W B. Powers, 1941, Geol. Soc. America Bull., v. 52, no. 8, 

p. 1207-1210.

Point series

Precambrian: Newfoundland (Labrador) and Quebec, Canada.

J. K. Gustafsxm and A. E. Moss, 1953, Mining Eng., v. 5, no. 6, p. 595 (table 1).

Point Arena beds

Miocene, upper: California.

C. E. Weaver, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 630, 631.

Point Bontour formation 

See Bontour formation..

Pointe-a-Pierre Railway Cut marl 

See Railway Cut marl.

Pointe aux Chenes formation

Upper Silurian (Cayugan) : Michigan.

G. M. Bhlers in K. K. Landes, G. M. Ehlers, and G. M. Stanley, 1945, Mien. Dept. 

Conserv. Geol. Survey Div. Pub. 44, Geol. Ser. 37, p. 33, 35-52.

Pointe Blanche formation

Upper Cretaceous (?) : St. Martin, Netherlands and French West Indies.

G. A. F. Molengraaf, 1888, Het geologisch Verband tusschen de West-Indische 

Bilanden: Natuur- en Geneeskundig Cong. 1 Handl., Amsterdam, 1887, p. 289 ; 

1931, Leidsche Geol. Meded., Deel 5, p. 730-736.

Pointe Noir beds

Miocene: Trinidad, British West Indies.

 C. J. Maury, 1925, Bull. Am. Paleontology, v. 10, no. 42, p. 162 (10).

Point Farfan diorite

Pre-Pliocene: Panama Canal Zone.

[T. F. Thompson], 1943, Panama Canal, Special Eng. Div., 3d Locks Pioj., pt. 2, chap. 

3, p. 26.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 291

Point Lake phase (of Point Lake-Wilson Island group)

Precambrian (Archean?) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 377A.

Point Lake-Wilson Island group

Precambrian (Archean?) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 377A.

Point of Rocks sandstone

Upper Eocene: California.

R. D. Reed and J. S. Hollister, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no.

12, p. 1566, 1568. 

Martin Van Couvering and H. B. Alien, 1943, Calif. Dept. Nat. Res., Div. Mines Bull.

118, pt. 3, p. 496-500.

Point Peak shale member (of Wilberns formation) 

Upper Cambrian: Texas.

Frederick Romberg and V. B. Barnes, 1944, Geophysics, v. 9, no. 1, p. 88. 

P. B. Cloud, Jr., V. E. Barnes, and Josiah Bridge, 1946, Tex. Univ. Bur. Econ. Geology 

Pub. 4301, p. 149, 155 [1945].

Point Rock shale member (of Wilberns formation) 

Upper Cambrian: Texas. 

B. F. Howell and others, 1944, Geol. Soc. America Bull., v. 55, no. 8, pi. 1.

Point Sal formation

Miocene, middle: California.

C. R. Canfield, 1939, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 1, p. 66 (footnote).

W. P. Woodring, M. N. Bramlette, and K. E. Lohman, 1943, Am. Assoc. Petroleum 

Geologists Bull., v. 27, no. 10, p. 1341 (table 1), 1344-1345.

Point Wilkins member (of Manitoban formation) 

Middle or Upper Devonian: Manitoba, Canada. 

A. D. Baillie, 1950, Manitoba Dept. Mines and Nat. Res. Mines Br. Pub. 49-2, p. 41.

Pokeberry limestone (in McLeansboro formation) 

Pennsylvanian: Illinois. 

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 17, 98.

Poland limestone member (of Denmark formation) 

Middle Ordovician (Mohawkian) : New York. 

G. M. Kay, 1943, Am. Jour. Sci., v. 241, no. 10, p. 598-601.

Polaris Harbour formation

Silurian: North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 241-242.

Polecat Bench formation 

Paleocene: Wyoming. 

G. L. Jepsen, 1940, Am. Philos. Soc. Proc., v. 83, no. 2, p. 231-238.

Police Post limestone

Lower Cambrian: Northwest Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 38.

Pollack quartz latite

Tertiary, upper: New Mexico.

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Res. Bull. 37, p. 39-47.
292 GEOLOGIC NAMES OF NORTH AMERICA

Pololu volcanic series

Pliocene(?) : Hawaiian Islands (Hawaii).

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, p. 171-176.

Pomeroy member (of Naknek formation) 

Upper Jurassic: Alaska.

C. E. Kirschner and D. L. Minard, 1948, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 95 [1949].

Ponia limestone

See Poniya limestone.

Poniya limestone

Pliocene (?) : Mariana Islands (Rota).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands : Geol. Soc. 

Japan Jour., v. 46, no. 549, p. 345, 346 (correlation table) [English translation in 

library of U. S. Geol. Survey, p. 2, correlation table].

Sho Sugawara, [1941], A consideration of the stratigraphic relation between the Mariana and Ponia limestones on Rota Island: Yabe Jubilee Pub., v. 2, p. 735-736, 737, 

738-740 (English abs., p. 740-741) [English translation in library of TJ. S. Geol. 

Survey, p. 1-2, 4, 9-12].

Pontgrave" River formation

Ordovician: Quebec, Canada.

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Rept. 204, p. 13.

Pools Cove formation

Lower Cambrian: Newfoundland, Canada.

B. F. Howell, 1939, Wagner Free Inst. Sci. Bull., v. 14, no, 4, p. 49-50.

Poor Valley Ridge member (of Clinch sandstone) 

Silurian: Virginia. 

R. L. Miller and J. C. Fuller, 1947, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 76.

Pope Springs sandstone

[Upper Paleozoic]: Wyoming.

C. M. Boos, 1941, Colo.-Wyo. Acad. Sci. Jour., V. 3, no. 1, p. 25-26.

Poplar Mountain gneiss

Pre-Triassic: Massachusetts.

M. E. Willard, 1951, Bedrock geology of the Mount Toby quadrangle, Massachusetts: 

U. S. Geol. Survey Geol. Quadrangle Map [GQ 8].

Popotosa formation

Miocene, upper: Mexico.

C. S. Denny, 1940, Jour. Geology, v. 48, no. 1, p. 77-84.

Porphyry Mountain group

Lower Devonian: Quebec, Canada.

A. M. Bell, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 241.

Porphyry Peaks conglomerate 

Pleistocene (?) : Colorado. 

R. L. Ives, 1938, Geol. Soc. America Bull., v. 49, no. 7, p. 1049-1050.

Portage Lake lava series

Precambrian (middle Keweenawan series) : Michigan.

W. S. White, 1952, Jour. Sed. Petrology, v. 22, no. 4, p. 190.

W. S, White, H. R. Cornwall, and R. W. Swanson, 1953, U. S. Geol. Survey Geol. Quadrangle Map GQ 27 [1954].
GEOLOGIC NAMES OP NORTH AMERICA INTRODUCED IN 19 3 6-1955 293

Port-au-Prince beds

Miocene, middle: Haiti.

H. N. Coryell and F. C. Rivero, 1940, Jour. Paleontology, v. 14, no. 4, p. 324.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1582.

Porter Road formation

Middle Cambrian (Loch Lomond) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 72-73.

Port Harrison series

Precambrian: Quebec, Canada.

E. H. Kranck, 1951, Acta Geographica, v. 11, no. 2, p. 40.

Portland arkose

Triassic: Connecticut.

P. D. Krynine, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1919; 

1950, Conn. State Geol. Nat. History Survey BuU. 73, p. 69-70.

Portland Head group

Middle Ordovician: Newfoundland, Canada.

Helgi Johnson, 1940, N. Y. Acad. Sci. Trans., ser. 2, v. 3, no. 6, p. 142.

Portland Hills silt member (of Troutdale formation) 

Pliocene, upper, or Pleistocene, lower: Oregon.

W. D. Lowry and B. M. Baldwin, 1952, Geol. Soc. America Bull., v. 63, no. 1, 

p. 10-13, pi. 2.

Port Maria conglomerate

Eocene: Jamaica, British West Indies.

C. A. Matley, 1929, Geol. Soc. London Quart, Jour., v. 85, pt. 4, p. 462.

Port Orford formation

Pliocene, middle: Oregon.

E. M. Baldwin, 1945, Jour. Geology, v. 53, no. 1, p. 37-39.

Port Royal clay shales

Age not stated: Jamaica, British West Indies.

J. G. Sawkins, 1869, Reports on the geology of Jamaica: [Great Britain] Geol. Survey 

Mem., p. 90, 92, 93.

Port Wing brownstone member (of Orienta formation) 

Cambrian: Wisconsin. 

G. O. Raasch, 1950, 111. Acad. Sci. Trans. v. 43, p. 147, fig. 8.

Portwood formation

Middle Devonian: Kentucky.

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 862-866.

Posey formation

Quaternary: California.

P. D. Trask and J. W. Rolston, 1951, Geol. Soc. America Bull., v. 62, no. 9, p. 1079, 

1082,1103.

Post Oak conglomerate member (of Wichita formation) 

Permian: Oklahoma. 

G. W. Chase, 1954, Aim. Assoc. Petroleum Geologists Bull., v. 38, no. 9, p. 234.

Post Pond volcanic member (of Orfordville formation) 

Middle Ordovician (?) : New Hampshire and Vermont.

C. A. Chapman and others, 1938, Geologic map and structure sections of the Mascoma quadrangle, New Hampshire (1: 62,500) : N. H. Highway (Dept. 

C. A. Chapman, 1939, Geol. Soc. America Bull., v. 50, no. 1, p. 133-134.
294 GEOLOGIC NAMES OF NORTH AMEKICA

Potato Hill andesite 

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 

2, p. 1197; 1949, v. 60, no. 7, p. 1155-1156.

Poteet limestone

Middle Ordovician: Virginia.

R. L. Miller and W. P. Brosg6, 1950, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 104.

Potrero formation

Lower Cretaceous : Sonora, Mexico.

R. B. King, 1939, Geol. Soc. America Bull., v. 50, no. 11, p. 1660-1661.

Potterchitto sand member (of Cook Mountain formation) 

Eocene (Claiborne group) : Mississippi. 

B. P. Thomas, 1942, Miss. State Geol. Survey Bull. 48, p. 53-57.

Pouce Coupe sandstone (in Smoky River shale)

Upper Cretaceous: Alberta and British Columbia, Canada.

P. S. Warren and C. R. Stelck, 1940, Royal Soc. Canada Trans., ser. 3, v. 34, sec. 

4, p. 144.

Poulsen Cliff shale

Lower Ordovician (Canadian) : North Greenland.

J. C. Troelsen, 1950, Meddel, om Gr0nland, bind 149, nr. 7, p. 48-50.

Pounds formation, sandstone, or cyclothem 

Pennsylvanian: Illinois. 

J. M. Weller, 1940, 111. State Geol. Survey Rept. Inv. 71, p. 38-39.

Powder Horn diorite

Devonian (?) : Newfoundland, Canada.

B. R. Rose, 1948, Newfoundland Geol. Survey Bull. 32, pt. 2, p. 46.

Powder House flow (in Yellowknife group)

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. B. G. Brown and A. S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans., 

v. 56, p. 70-71.

Powell granite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 128.

Power Glen formation

Lower Silurian (Alexandrian) : Ontario, Canada.

T. B. Bolton, 1953, Canada Geol. Survey Paper 53-23, p. 4-5.

Prairie evaporite

Middle Devonian: Subsurface in North Dakota, and Manitoba and Saskatchewan, Canada.

A. D. Baillie, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 2, p. 444, 445, 

446.

Prairie formation

Pleistocene: Louisiana.

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 163-166.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 295

Prairie Creek limestone lentil (in Gueda Springs shale member of Wellington 

formation) 

Permian: Kansas. 

W. A. Ver Wiebe: 1937, Wichita Municipal Univ. Bull., v. 12, no. 5, p. 13.

Prairie Divide glacial stage

Pleistocene (pre-Wisconsin) : Colorado.

Kirk Bryan and L. L. Ray, 1940, Smithsonian Misc. Colls., v. 99, no. 2, p. 28-29.

Prairie Grove member (of Hale formation) 

Pennsylvanian: Arkansas. 

L. G. Henbest, 1953, Am. Assoc. Petroleum Geologosts Bull., v. 37, no. 8, p. 1940-1942.

Prairie Hollow member (of Prairie Mountain formation) 

Mississippian: Oklahoma. 

1954, Ardmore Geol. Soc. [Guidebook] Field Trip October, 1954, chart facing p. 10.

Prairie Mountain formation

Pennsylvanian (Bendian) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854, 

880-884.

Preble formation

Middle or Upper Cambrian: Nevada.

H. G. Ferguson, S. W. Muller, and R. J. Roberts, 1951, Geology of the Winnemucca 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 11].

Preble formation

Precanibrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. H. Stock-well, 1936, Canada Geol. Survey Map 377A.

Preissac granite

Precambrian: Quebec, Canada.

G. W. H. Norman, 1945, Bcon. Geology, v. 40, no. 1, p. 4.

Preissac syenites

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 117.

Prescott series

Cambrian and Ordovician: Ontario, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 409, 424, 550, 551.

Prettymarsh diorite 

Devonian: Maine.

G. H. Chadwick, 1942, (abs.) Geol. Soc. America Bull., v. 53, no. 12, pt. 2, p. 1796- 

1797.

Pretty Meadow glacial stage

Pleistocene (Illinoian?) : Colorado.

R. L. Ives, 1953, Geog. Review, v. 43, no. 2, p. 235-237, 249.

Pretty Run sandstone facies (of Logan formation) 

Mississippian: Ohio. 

F. T. Holden, 1941, 111. Acad. Sci. Trans., v. 34, no. 2, p. 172.
296 GEOLOGIC NAMES OF NORTH AMERICA

Prewitt sandstone member (of Morrison formation) 

Jurassic: New Mexico.

C. T. Smith, 1951, in N. Mex. Geol. Soc. Guidebook 2<J Field Conf., p. IS. 38; 1954, 

N. Mex. Bur. Mines Min. Res. Bull. 31, p. 16-17.

Price conglomerate

Devonian: Quebec, Canada.

T. H. Clark, 1942, Royal iSoc. Canada Trans., ser. 3, v. 36, sec. 4, p. 15.

Prickly Pear member (of Spokane formation) 

Precambrian (Belt) : Montana. 

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p. 1898.

Prida formation

Lower (?) and Middle Triassic: Nevada.

S. W. Muller, H. G. Ferguson and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7J.

Priest granite

Precambrian: New Mexico.

J. T. Stark and B. C. Dapples, 1946, Geol. Soc. America Bull., v. 57, no. 12, pt. 1, 

p. 1138-1139.

Priest Canyon member (of Fremont formation) 

Upper Ordovician (Richmond) : Colorado.

W. C. Sweet, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 2, p. 295-296, 

302.

Prince Creek formation

Upper Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 166-167.

Princeton group

Eocene or Oligocene: British Columbia, Canada.

H. M. A. Rice, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-5.

Prinsen af Wales Bjaerge lavas

Eocene (?) : Northeast Greenland.

L. R. Wager, 1947, Meddel. om Gr0nland, bind 134, nr. 5, p. 20, 21, 46, pi. 6.

Proafio group

Middle Cretaceous or older: Zacatecas, Mexico.

J. B. Stone, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1956-1957.

Profilf jeldet shales

Silurian (?) (post-Niagaran?) : North Greenland.

Erdhart Fraukl, 1954, Meddel. om Gr0nland, bind 116, nr. 2, p. 27, 56, 79, pi. 1.

Prosperous granite

See Prosperous Lake granite.

Prosperous Lake granite

Precambrian: Northwest Territories (Mackenzie), Canada. 

A. W. Jolliffe, 1942, Canada Geol. Survey Map 709A.

Proveedora formation

Lower Cambrian : Sonora, Mexico.

G. A. Cooper and A. R. V. Arellano, 1952, Smithsonian Misc. Coll., v. 119, no. 1, p. 4.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 297

Providence shales

Upper Cretaceous (Campanian) : Jamaica, British West Indies. 

C. T. Trechmann, 1927, Geol. Mag., v. 64, no. 1, p. 31, 33. 

L. J. Chubb, 1955, Geol. Mag., v. 92, no. 3, p. 186.

Providence Island limestone

Lower Ordovician (upper Canadian) : Vermont.

E. O. Ulrich in E. O. Ulrica and G. A. Cooper, 1938, Geol. Soc. America Special Paper 

13, p. 26, pi. 58 (column 27).

Providence Mountains limestone 

Pennsylvanian: California. 

J. C. Hazzard, 1938, (abs.) Geol. Soc. America Proc. 1937, p. 240.

Provincial limestones (in Tuff formation)

Upper Cretaceous (Cenomanian-Turonian) : Cuba.

A. A. Thiadens, 1937, Geog. Geol. Meded. (Utrecht Univ.) Physiog-Geol. Reeks, no. 12, 

p. 11-12, 17-18.

Provo formation

Pleistocene and Recent: Utah.

K. C. Bullock, 1951, Utah Geol. Mineralog. Survey Bull. 41, p. 21.

Prudencia sandstone

Miocene, lower: Tabasco, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart.

Pruett formation 

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, 

p. 1197 ; 1949, v. 60, no. 7, p. 1145-1151.

Pucro sandstone

Miocene, middle: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 132,134 (correlation chart).

Pueblan series

Cretaceous (Mid-Cretacic) : New Mexico.

Charles Keyes, 1936, Pan-Am. Geologist, v. 66, no. 2, p. 119 (chart) ; 1940, v. 74, 

no. 3, p. 213.

Puente de Piedra conglomerate

Eocene, middle and upper: Tabasco and Chiapas, Mexico.

G. P. Salas and Ernesto Lopez Ramos, 1951, AsociaciOn Mexicana Gefilogos Petrolevos 

Bol., v. 3, nos. 1-2, p. 25-26.

Puercan age

Paleocene: North America.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 8, pi. 1.

Puerto Blanco formation

Lower Cambrian : Senora, Mexico.

G. A. Cooper and A. R. V. Arellano, 1952, Smithsonian Misc. Coll., v. 119, no. 1, p. 4.

Puerto Carballo arenaceous limestone series 

Eocene (?) : Costa Rica. 

D. F. MacDonald and others, 1919, [Costa Rica] La Gaceta, Diario Oficial, aflo 41, no.

138, p. 352 ; no. 140, p. 357. 

B. N. Webber, 1942, Am. Inst. Mining and Metall. Engineers Tech. Pub. 1445, p. 3.
298 GEOLOGIC NAMES OF NORTH AMERICA

Pullen formation

Miocene, upper, to Pliocene, lower(?) : California.

B. A. Ogle, 1953, Calif. Dept. Nat. Res. Div. Mines Bull. 164, p. 13 (fig. 3), 26-28, pi. 1.

Pulpit conglomerate division (of Almy conglomerate) 

Paleocene: Utah. 

A. J. Eardley, 1944, Geol. Soc. America Bull., v. 55, no. 7, p. 842.

Pumpernickel formation

Pennsylvanian(?) : Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Pumpkin Valley shale

Middle Cambrian: Tennessee.

Josiah Bridge, 1945, Geologic map and structure sections of the Mascot-Jefferson City

zinc mining district, Tennessee (1:31,680) : Tenn. State Dept. Conserv., Div.

Geology.

Puna volcanic series

Pleistocene, upper (?) and Recent: Hawaiian Islands (Hawaii).

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, p. 103-110.

Punchbowl formation

Miocene, upper: California.

L. F. Noble, 1953, Geology of the Pearland quadrangle, California: U. S. Geol. Survey 

Geol. Quadrangle Map [GQ 24].

Punta Carballo arenaceous limestone series

See Puerto Carballo arenaceous limestone series.

Punta Gorda [formation]

Miocene: Istmo de Tehuantepec, Mexico.

Ramiro Robles Ramos, 1942, Irrigaci6n en Mexico, v. 23, no. 3, p. 45 (correlation 

chart).

Purisima Nueva formation

Oligocene(?) : Baja California, Mexico.

Arnold Heim, 1921, Zeitschr. ftir Vulkanologie, Band 6, Heft 1, tafel 4.

Purple Conglomerate group

Upper Cretaceous: Jamaica, British West Indies.

J. G. Sawkins, 1869, Reports on the geology of Jamaica: [Great Britain] Geol. Survey

Mem., p. 103-104, 111-112. 

C. A. Matley, 1929, Geol. Soc. London Quart. Jour., v. 85, pt. 4, p. 449, 450, 452

(fig. 2).

Pushmataha series

Pennsylvanian (Bendian) : Oklahoma.

B. H. Hariton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854, 

855-856.

Putnam Highland formation

Ordovician: Northwest Territories (Baffin Island), Canada. 

A. K. Miller and others, 1954, Geol. Soc. America Mem. 62, p. 14.

Putnam Peak basalt

Pliocene: California.

C. E. Weaver, 1949, Geol. Soc. America Mem. 35, p. 110 (table 24), 130-131.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 299

Puy6 gravel

Quaternary: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103; 1938, Jour. 

Geology, v. 46, no. 7, p. 937, 959.

P. W. A. Quarry limestone member (of Drum formation) 

Pennsylvanian (Missouri series) : Nebraska. 

G. E. Condra, 1949, Nebr. Geol. Survey Bull. 16, p. 37.

Pyramid Rock basalt

Quaternary: Hawaiian Islands (Oahu).

H. T. Stearns, 1940, Hawaii Div. Hydrography Bull. 5, p. 50-51.

Quadeville metagabbro

Precambrian: Ontario, Canada.

D. F. Hewitt, 1954, Ontario Dept. Mines Ann. Rept., v. 62, pt. 5, p. 16.

Quadra group

Pleistocene : British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 48, map.

Quajote member (of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 9-10,16-17.

Qualicum formation

Upper Cretaceous : British Columbia, Canada. 

J. L. Usher, 1952, Canada Geol. Survey Bull. 21, p. 22.

Qu'Appelle group

Devonian: Subsurface in Manitoba and Saskatchewan, Canada, Montana,

and North Dakota. 

A. D. Baillie, 1953, Manitoba Dept. Mines and Nat. Res. Mines Br. Pub. 52-5, p. 34, 35.

Quar6 limestone (of Hollis Reservoir formation) 

Upper Jurassic : Trinidad, British West Indies.

R. A. Liddle, 1946, The geology of Venezuela and Trinidad, 2d ed.: Ithaca, N. Y., 

Paleont. Research Inst., p. 701.

Quarry conglomerate

Miocene and Pliocene: California.

G. J. Bellemin, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 4, p. 652 (fig. 2), 

653, 656-657.

Quarry Island beds (of Romaine formation)

Ordovician (Beekmantown) : Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines: Peiping, 

China, University Press, Natl. Univ. Peking, p. 522.

Quatal red clay member (of Santa Margarita formation) 

Miocene, upper: California. 

W. E. Ver Planck, 1952, Calif. Dept. Nat. Res., Div. Mines Bull. 163, p. 35-37, pi. 33.

Queantoweap sandstone

Lower Permian: Arizona.

A. H. McNair, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 3, p. 525-526.

426779 57 20
300 GEOLOGIC NAMES OF NORTH AMEBICA

Quebrancha limestone member (of Caimito formation) 

Oligocene, upper: Panama. 

T. F. Thompson, 1944, Geological explorations in the vicinity of Rio Quebrancha for the

Panama Cement Company : Panama Canal, Special Eng. Div., p. 17-20. 

W. P. Woodring and T. F. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull., 

v. 33, no. 2, p. 234.

Queets beds

Pleistocene, upper: Washington.

S. L. Glover, 1940, Northwest Science, v. 14, no. 3, p. 69.

Quemado formation

Upper Jurassic: Cuba.

R. H. Palmer, 1945, Jour. Geology, v. 53, no. 1, p. 5 (table 1), 7.

R. W. Imlay, 1952, Geol. Soc. America Bull., v. 63, no. 9, p. 969, Chart 8C.

Quien Sabe volcanics

Miocene, middle (?) : California.

N. L. Taliaferro, [1949], Geologic map of the Hollister quadrangle, California

(1: 62,500) : Calif. Dept. Nat. Res., Div. Mines [preprint?] Bull. 143, pi. 1. 

C. J. Leith, 1949, Calif. Dept. Nat. Res., Div. Mines Bull. 147, p. 22-24, pi. 1.

Quimbo dolomite (in Joserita member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11.

Quimbyg Mill member (of Platteville formation)

Middle Ordovician : Wisconsin, Iowa, and Illinois.

A. F. Agnew and A. V. Heyl, Jr., 1946, Am. Assoc. Petroleum Geologists Bull., v. SO, 

no. 9, p. 1585-1587.

Quimper sandstone

Oligocene, lower: Washington.

J. W. Durham, 1942, Jour. Paleontology, v. 16, no. 1, p. 86-87.

Quinam limestone

Oligocene: Trinidad, British West Indies.

Ernst Lehner, 1935 [France] Office national des combustibles liquides Annales,

10e anne'e, no. 4, p. 701 (table). 

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 204 (table 12) ; no. 4,

p. 277 [1952].

Quinn clay

Upper Pennsylvanian (Cisco) : Texas.

F. B. Plummer in M. G. Cheney, 1948, Abilene Geol. Soc. [Guidebook] Spring Field

Trip, June 11-12, p. 7, 12. 

F. B. Plummer and H. B. Bradley, 1949, Tex. Univ. Bur. Econ. Geology Pub. 4915,

p. 5-17.

Quintero limestone

Tertiary, upper: Tamaulipas, Mexico.

Arnold Heim, 1940, Eclogae Geologicae Helvetiae, v. 33, no. 2, p. 331.

Quinto member (of Moreno group) 

Upper Cretaceous: California.

F. M. Anderson, 1943, Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 185 (fig. 

69), 186 [preprint 1941].

Quinville granite

Precambrian: Quebec, Canada.

M. E. Wilson, 1920, Canada Geol. Survey Pub. (map) 1691.

Plerre Mauffette, 1949, Quebec Dept. Mines Prelim. Rept. 223, p. 12.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 301

Quita Coraza formation

Oligocene, upper: Dominican Republic.

W. M. Small, 1948, Seismol. Soc. America Bull., v. 38, no. 1» p. 26.

Quitman quartz monzonite 

Oligocene (?) : Texas. 

R. M. Huffington, 1943, Geol. Soc. America Bull., v. 54, no. 7, p. 1034-1036.

Rabbit Point sandstone

Lower Cambrian: Northwest Territories (Devon Island), Canada. 

V. B. Kurtz, A. H. McNair, and D. B. Wales, 1952, Am. Jour. Sci., v. 250, no. 9, 

p. 649-650.

Rabens Branch bed (in Parkers formation) 

Upper Pennsylvanian: Indiana. 

C. A. Malott, 1947, Ind. Acad. Sci. Proc., v. 57, p. 132 [1948].

Raber bed

Silurian: Michigan.

W. A. Kelly, 1954, Mich. Geol. Soc. [Guidebook 18th] Ann. Field Trip, p. 21.

Racetrack dolomite

Middle and Upper Cambrian: California.

J. F. McAllister, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 25, p. 8-9.

Rader limestone member (of Cherry Canyon formation) 

Permian : Texas and New Mexico. 

P. B. King in A. K. Miller and W. M. Furnish, 1940, Geol. Soc. America Special Paper

26, p. 9. 

P. B. King, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 583, pi. 2.

Ragg quartzite

Precambrian (Keweenawic) : Iowa.

Charles Keyes, 1941, Pan-Am. Geologist, v. 75, no. 2, p. 99, 107.

Ragged Valley shale member (of Arroyo Hondo formation) 

Eocene: California. 

H. B. Yokes, 1939, N. Y. Acad. Sci. Annals, v. 38, p. 27-28.

Raglan metagabbro

Precambrian: Ontario, Canada.

D. P. Hewitt, 1954, Ontario Dept. Mines Ann. Rept., v. 62, pt. 5, p. 15-16.

Railway Cut marl (in Chaudiere shale)

Upper Cretaceous: Trinidad, British West Indies.

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 529.

J. A. Cushman and H. H. Renz, 1947, Cushman Lab. Foram. Reesarch Contr., v. 23, 

pt. 2, p. 31-32.

Rainbow Flat group

Age unknown: California.

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 294, map 1.

Rainvalley formation 

Permian: Arizona. 

D. L. Bryant, 1955, Dissert. Abs., v. 15, no. 7, p. 1224.

Raleigh graphite

Precambrian: North Carolina.

J. W. Harrington, 1947, Jour. Geology, v. 55, no. 6, p. 516-521.
302 GEOLOGIC NAMES OF NORTH AMERICA

Ralph Lake conglomerate

Precambrian: Manitoba, Canada.

J. D. Allan, 1946, Manitoba Dept. Mines and Nat. Res. Mines Br., Notes to accompany 

Prelim. Map 46-2, p. 2.

Ralston formation

Jurassic: Colorado.

L. W. LeRoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 46-55.

Ramdat marl (of Navet formation)

Eocene, lower : Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1948, Cushman Lab. Foram. Research Special Pub. 

24, p. 2.

Rampart Cave member (of Muav formation) 

Lower and/or Middle Cambrian : Arizona. 

B. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 84-87.

Rancheria formation

Mississippian (Meramec) : New Mexico.

L. R. Laudon and A. L. Bowsher, 1949, Geol. Soc. America Bull., v. 60, no. 1, p. 17-19, 

fig. 4.

Rancholabrean age

Pleistocene, late: North America.

D. B. Savage, 1951, Calif. Univ. Pubs. Dept. Geol. Sci. Bull., v. 28, no. 10, p. 289.

Rancho Quemado dacite

Pliocene (?) : Honduras.

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 30, pi. 1 (geol. map).

Randb01 conglomerate

Devonian or younger : Northeast Greenland.

Wolf Maync, 1949, Meddel. om Gr0nland, bind 114, nr. 2, p. 21-24.

Rapid formation

Tertiary : British Columbia, Canada.

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Rapid City lens (in Newcastle formation) 

Upper Cretaceous : South Dakota. 

R. M. Grace, 1952, Wyo. Geol. Survey Bull. 44, p. 14, 17.

Raspberry formation

Upper Triassic: Nevada.

H. G. Ferguson, S. W. Muller, and R. J. Roberts, 1951, Geology of the Winnemucca 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 11].

Ratcliffe Brook formation

Lower Cambrian (Etcheminian) : New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 58-63.

Rathbun limestone member (of Denmark formation) 

Middle Ordovician (Mohawkian) : New York. 

G. M. Kay, 1943, Am. Jour. Sci., v. 241, no. 10, p. 598-600.

Raton basalts

Quaternary: New Mexico.

Helen Stobbe, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt. 2, p. 1354-

1355. 

R. F. Collins, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1027-1028, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 303

Rattling Brook group

Precambrian ( ?) : Newfoundland, Canada.

K. D. Watson, 1947, Newfoundland Geol. Survey Bull. 21, p. 4-5.

Raven member (of Montoya dolomite) 

Upper Ordovieian : New Mexico. 

L. P. Entwistle, 1944, N. Mex. State Bur. Mines Min. Ees. Bull. 19, p. 18.

Ravenna shale facies (of Portwood formation) 

Middle Devonian; Kentucky. 

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 864, 865.

Ravnefjeld formation

Middle Devonian : Northeast Greenland.

Arne Noe-Nygaard, 1934, Meddel. om Gr0nland, bind 103, nr. 1, p. 16-25.

Rawlins ash bed (in Ash Hollow member of Ogallala formation) 

Pliocene: Kansas and Nebraska.

Ada Swineford, J. C. Frye, and A. B. Leonard, 1955, Jour. Sed. Petrology, v. 25, no. 4, 

p. 253, fig. 1.

Rawlinsian series

Cretaceous (Cretacic) : Kansas.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 76, no. 4, p. 304, 313.

Rawls basalt

Miocene ( ?) : Texas.

S. S. Goldich and C. L. Seward, 1948, W. Tex. Geol. Soc. [Guidebook] Fall Field 

Trip, p. 22.

Rayville formation

Pennsylvanian (Lampasas) : Texas.

M. G. Cheney, 1947, Jour. Geology, v. 55, no. 3, p. 210-211.

Razorback formation

Tertiary, upper: New Mexico.

F. J. Kuellmer and others, 1953, in N. Mex. Geol. Soc. Guidebook 4th Field Conf.,

p. 50 (map). 

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Res. Bull. 37, p. 39, 47-48.

Read Bay formation

Ordovieian and Silurian: Northwest Territories (Cornwallis Island),

Canada. 

R. Thorsteinsson and Y. O. Fortier, 1954, Canada Geol. Survey Paper 53-24, p. 9-12.

Ready Pay member (of Percha shale formation) 

Upper Devonian: New Mexico and Texas.

F. V. Stevenson, 1944, Dallas Digest Joint Ann. Meeting, p. 95; 1945, Jour. Geology, 

v. 53, no. 4, p. 241-243.

Reager ash bed (of Ash Hollow member of Ogallala formation) 

Pliocene: Kansas. 

J. S. Carey and others, 1952, Kans. State Geol. Survey Bull. 96, pt. 1, p. 9-11, 27.

Reamsville ash bed (in Ash Hollow member of Ogallala formation) 

Pliocene: Kansas.

Ada Swineford, J. C. Frye, and A, B, Leonard, 1955, Jour, Sed. Petrology, v. 25, no, 

4, p. 254-255, fig. 1.
304 GEOLOGIC NAMES OF NORTH AMERICA

Reclamation group

Pennsylvanian: Wyoming.

G. B. Condra, E. C. Reed, and O. J. Scherer, 1940, Nebr. Geol. Survey Bull. 13, p. 2, 

3,32.

Recreation red beds

Cretaceous: Arizona.

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. T15-716.

Red Bluff granite

Precambrian: Texas.

L. A. Nelson, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 160.

Red Branch member (of Woodbine formation) 

Upper Cretaceous: Texas. 

H. R. Bergquist, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 98.

Red Chute quartz diorite

Precambrian: Quebec, Canada.

P. B. Imbault, 194T, Quebec Dept. Mines Prelim. Kept. 207, p. 6-T.

Red Cliff volcanics

Ordovician(?) : Newfoundland, Canada.

A. K. Snelgrove, 1931, Canadian Mining and Metall. Bull. 228, p. 486, 48T.

Red Cloud sand and gravel

Pleistocene: Nebraska.

C. B. Schultz, B. C. Reed, and A. L. Lugnr 1951, Science, v. 114, no. 2969, p. 548.

Red Desert tongue (of Wasatch formation) 

Eocene, lower: Wyoming. 

G. N. Pipiringos, 1955, Wyo. Geol. Assoc. Guidebook 10th Ann. Field Conf., p. 100, 101.

Redfleld formation

Eocene (Jacksonian) : Arkansas.

L. J. Wilbert, Jr., 1953, Ark. Div. Geology Bull. 19, p. 80-87.

Red Hill complex

Carboniferous (?) (White Mountain magma series) : New Hampshire.

A. P. Smith and others, 1938, Geologic map and structure sections of the Mt. Chocorua 

quadrangle, New Hampshire (1: 62,500) : N. H. Highway Dept.

Red House formation

Pennsylvanian (Magdalena) : New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 91-92, 

fig. 2.

Red Mesa member (of Entrada formation)

Upper Jurassic: Utah, Arizona, Colorado, and New Mexico.

W. B. Hoover, 1950, N. Mex. Geol. Soc. Guidebook 1st Field Conf., p. 76, 77, 78.

Red Mountain dacites

Quaternary: New Mexico.

*.

Helen Stobbe, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt. 2, p. 1354-1355. 

R. P. Collins, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1031-1033, pi. 1.

Red Mountain gneiss 

Precambrian: Texas.

Frederick Romberg and V. E. Barnes, 1949, Geophysics, v. 14, no. 2, fig. 1 facing p. 154. 

V. E. Barnes in V. B. Barnes, D. A. Shock, and W. A, Cunningham, 1950, Tex. Univ. 

Bur. Econ. Geology Pub. 5020, p. 7.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 305

Redonda member (of Chinle formation) 

Triassic: New Mexico.

Ernest Dobrovolny and C. H. Summerson in Ernest Dobrovolny, C. H. Summerson, and 

R. L. Bates, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 62, sheets 1, 2.

Hedondo sandstone

Cretaceous (Early Cretacic) : New Mexico.

Charles Keyes, 1940, Pan-Am. Geologist, v. 74, no. 2, p. 105 (chart).

Red Peak member (of Chugwater formation) 

Triassic: Wyoming. 

J. D. Love, 1939, Geol. Soc. America Special Paper; 20, p. 44.

Red Pine shale

Precambrian: Utah.

N. C. Williams, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 12, p. 2738.

Red Rock limestone

Triassic (Karnic?) : Nevada.

P. N. Johnston, 1941, Jour. Paleontology, v. 15, no| 5, p. 448.

Red Rock rhyolite

Precambrian: Arizona.

E. D. Wilson, 1937, (abs.) Geol. Soc. America Pfoc. 1936, p. 112; 1939, Geol. Soc. 

America Bull., v. 50, no. 7, p. 1118, 1120-1121.

Red Rose formation

Upper Jurassic and Lower Cretaceous: British Columbia, Canada.

R. E. Sommers, 1955, British Columbia Bur. Miries Ann. Rept. 1954, p. A89-A90.

Red Shale Butte complex 

Pleistocene: California. 

C. A. Anderson, 1941, Calif. Univ. Dept. Geol. Sci. Bull., v. 25, no. 7, p. 364-365.

Red Tanks member (of Madera limestone) 

Pennsylvanian: New Mexico.

V. C. Kelley and G. H. Wood, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 47.

Red Wash formation

Lower Triassic: Utah.

J. S. Williams, 1945, Am. Jour. Sci., v. 243, no. 9, p. 477,478.

Redwater shale member (of Sundance formation) 

Upper Jurassic: South Dakota and WyomingL 

R. W. Imlay, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 2, p. 259-264.

Red Wine anorthosite

Precambrian: Newfoundland (Labrador), Canada.

D. M. Baird, 1953, Newfoundland Geol. Survey Iqf. Circ. 4 (revised), p. 137.

Reed granite

Precambrian: Manitoba, Canada.

J. M. Harrison, 1949, Canada Geol. Survey Mem. 250, p. 19.

Reed Canyon silt member (of Tejon formation) 

Eocene: California. 

J. G. Marks, 1941, (abs.) Geol. Soc. America Bull.i v. 52, no. 12, pt. 2, p. 1922.
306 GEOLOGIC NAMES OF NORTH AMERICA

Reeding sandstone

Permian: Oklahoma.

Henry Schweer in O. E. Brown, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 

12, p. 1553 (fig. 9).

Reeds Creek andesite

Eocene, middle, to Oligocene, lower : California.

B. L. Clark and C. A. Anderson, 1938, Geol. Soc. America Bull., v. 49, no. 6, p. 935 

(fig. 2), 940-941.

Reel limestone

Pennsylvanian: Illinois.

G. H. Cady and others, 1955, 111. Geol. 'Survey Kept. Inv. 183, p. 8.

Reeves limestone member (of Reeves McDonald formation) 

Precambrian and Cambrian: British Columbia, Canada. 

W. H. White, 1950, British Columbia Bur. Mines Ann. Kept. 1949, p. A-172.

Reeves McDonald formation

Precambrian and Cambrian: British Columbia, Canada.

W. H. White, 1950, British Columbia Bur. Mines Ann. Kept. 1949, p. A-171 A-172.

Reforma hypersthene andesite 

Cretaceous (?) : Honduras. 

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 29, pi. 1 (geol. map).

Remedies limestone

Paleocene (Midwayan) : Cuba.

J. A. Cushman and P. J. Bermudez, 1948, Cushman Lab. Foram. Research Contrib.,

v. 24, pt. 3, p. 68. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 224.

Rencontre formation

Devonian or Mississippian : Newfoundland, Canada. 

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 91-93.

Reno member (of Franconia formation)

Upper Cambrian : Minnesota and Wisconsin. 

R. R. Berg, 1951, Minn. Geologist, v. 8, no. 4, p. 2.

Rensselaer sandstone

Precambrian or Cambrian (Eo-Cambrian) : North Greenland, and Northwest

Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 35.

Repettian stage

Pliocene: California.

Manley Natland, 1953, Pacific Petroleum Geologist, v. 7, no. 2, p. 2.

Represo beds

Mississippian (Osagean-Meramecian) : Sonora, Mexico.

J. M. Weller and others, 1948, Geol. <Soc. America Bull., v. 59, no. 2, p. 136-137. 

Chart 5, column 36.

Resendez shale member (of Fayette formation) 

Eocene (Jackson) : Texas.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, p. 259 

(fig. 2), 267-268.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 307

Resolution dolomite member (of Minturn formation) 

Pennsylvania!!: Colorado. 

Ogden Tweto, 1949, Colo. Sci. Soc. Proc., v. 15, no. 4, p. 152, 199-201.

Reston formation

Middle Jurassic: Manitoba, Canada and North Dakota.

D. F. Stott, 1955, Manitoba Dept. Mines and Nat. Ees. Pub. 54-2, p. 18-20, 35-37, 

44-45.

Rest Spring shale

Pennsylvanian(?) : California.

J. F. McAIlister, 1952, Calif. Dept. Nat. Res., Div. Mines Special Kept. 25, p. 25-26.

Retrench marls

Oligocene: Trinidad, British West Indies.

V. C. Tiling, 1928, Geol. Soc. London Quart. Jour., v. 84, p. 20-21.

R. M. Stainforth, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 7, p. 1293 

(footnote).

Revuelto shales

Mesozoic (Early Cretacic) : New Mexico.

Charles Keyes, 1940, Pan-Am. Geologist, v. 74, no. 4, p. 306-307.

Rexroad formation

Pliocene, upper : Kansas and Oklahoma.

H. T. U. Smith, 1940, Kans. State Geol. Survey Bull. 34, p. 95-99.

Rhyolite Canyon formation 

Cenozoic: Arizona.

H. E. Enlows, 1951, Tulsa Geol. Soc. Digest, v. 19, p. 105-107 ; 1955, Geol. Soc. 

America Bull., v. 66, no. 10, p. 1217-1242.

Rib Hill formation

Pennsylvanian: Nevada.

E. N. Pennebaker, 1932, Mining and Metallurgy, v. 13, no. 304, p. 164.

Richfield member (of Lucas formation)

Middle Devonian : Michigan (subsurface).

K. K. Landes, 1951, U. S. Geol. 'Survey Circ. 133, p. 7.

Richfield Quarry shale member (of Drum formation) 

Pennsylvanian (Missouri series) : Nebraska. 

G. E. Condra, 1949, Nebr. Geol. Survey Bull. 16, p. 37.

Rich Fountain formation

Lower Ordovician : Missouri and Arkansas.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 17-24.

Richibucto formation

Pennsylvanian: New Brunswick, Nova Scotia, and Prince Edward Island, 

Canada.

J. F. Caley and others, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2,

p. 478. 

W. C. Gussow, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 7, p. 1757-1758.

Richmond Gulf group

Precambrian: Quebec, Canada.

M. E. Wilson, 1939, Geologie der Erde, North America, v. 1, p. 276.
308 GEOLOGIC NAMES OF NORTH AMERICA

Ricker limestone member (of Grindstone Creek formation)

See Ricker Station limestone member (of Grindstone Creek formation).

Ricker Station limestone member (of Grindstone Creek formation) 

Pennsylvanian: Texas.

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66 (fig. 1). 

Gayle Scott and others, 1941, in W. Tex. Geol. Soc. [Guidebook] Spring Field Trip, 

p. 24.

Ridge formation

See Ridge Route formation.

Ridge Basin group

Miocene, upper, to Pliocene: California.

D. I. Axelrod, 1950, Carnegie Inst. Washington Pub. 590, p. 161, 168.

Ridge Route formation

Pliocene (?) : California.

Thomas Clements, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, p. 217 (fig. 1), 

218.

Ridley Park granodiorite

Age unknown: Pennsylvania.

A. W. Postel, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 2004-2005; 

1941, Acad. Nat. Sci. Philadelphia Proc., v. 92, p. 134.

Rierdon formation

Upper Jurassic: Montana.

W. A. Cobban, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 9, p. 1277-1281.

Rigaud passage beds

Cambrian and Ordovician: Quebec, Canada.

A. W. Grabau, 1936, Paleozoic formations in the light of the pulsation theory, v. 2, 

Cambrovician pulsation, pt. 1, Caledonian and St. Lawrence geosynclines : Peiping, 

China, University Press, Natl. Univ. Peking, p. 416, 424, 425, 550, 551.

Rigi series

Upper Jurassic (Portlandian) : Northeast Greenland.

Wolf Maync, 1947, Meddel. om Gr0nland, bind 132, nr. 2, p. 73-77, 119, 133-137, pi. 6.

Riley formation

Upper Cambrian: Texas.

P. E. Cloud, Jr., V. E. Barnes, and Josiah Bridge, 1946, Tex. Univ. Bur. Econ. Geology 

Pub. 4301, p. 154-155 [1945].

Riley Creek glaciation

Pleistocene (Wisconsin) : Alaska.

Clyde Wahrhaftig in T. L. Pewe" and others, 1953, U. S. Geol. Survey Circ. 289, p. 8, 13 

(table 1).

Rillito andesite

Tertiary: Arizona.

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 736.

Rim Rock sandstone

Upper Cretaceous: Utah.

P. T. Walton, 1944, Geol. Soc. America Bull., v. 55, no. 1, p. 99, 111-114.

Rincon formation

Upper Cretaceous or Tertiary, lower: Bonaire, Netherlands West Indies. 

P. J. Pijpers, 1931, Leidsche Geol. Meded., Deel 5, p. 705.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 309

Rinconada schist member (of Ortega formation) 

Precambrian: New Mexico.

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 22. 

Arthur Montgomery, 1953, N. Mex. State Bur. Mines Mln. Res. Bull. 30, p. 12-19.

Ringbone shale

Lower Cretaceous (Bisbee group) : New Mexico.

S. G. Lasky, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 5, p. 531-532, fig. 2.

Rio Claro boulder bed

Miocene, lower: Trinidad, British West Indies.

H. G. Kugler and others [1939], Geological conference in Trinidad; notes on the excursions : Petroleum Assoc. Trinidad, p. 8. 

H. H. Suter, 1951, Colonial Geology and Min. Res., v. 2, no. 3, p. 208 [1952].

Rio Dell formation

Pliocene, middle to upper : California.

B. A. Ogle, 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 164, p. 13 (fig. 3), 31-33, pi. 1.

Rio Duque shales

Oligocene, upper, or Miocene, lower : Panama.

T. F. Thompson, 1944, Geological explorations in the vicinity of Rio Quebrancha for the 

Panama Cement Company : Panama Canal, Special Eng. Div., p. 21-23.

Rio Guatemala group

Oligocene: Puerto Rico.

A. D. Zapp, H. R. Bergquist, and C. R. Thomas, 1948, U. S. Geol. Survey Oil and Gas 

Inv..Prelim. Map 85, sheets 1, 2.

Rio Santa Maria granite 

Age not stated: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologie: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 134.

Rio Seco diabase

Age not stated: Costa Rica.

B. N. Webber, 1942, Am. Inst. Mining and Metall. Enginers Tech. Pub. 1445, p. 2, 3.

Rio Seco formation

Jurassic: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 31.

Rio Torola limestone

Pliocene (?) : El Salvador.

S. K. Roy and R. K. Wyant, 1953, Fieldiana Geology, v. 10, no. 16, p. 176-191.

Rison clay member (of White Bluff formation) 

Eocene (Jacksonian) : Arkansas. 

L. J. Wilbert, Jr., 1953, Ark. Div. Geology Bull. 19, p. 70-80.

Rita Blanca deposits 

Pleistocene: Texas. 

G. L. Evans and G. E. Meade, 1945, Texas Univ. 9ur. Econ. Geology Pub. 4401, p. 493.

Ritchie limestone

Upper Cambrian or Lower Ordovician: New York,

D. W. Fisher and G. F. Hanson, 1951, Am. Jour. Sci., v. 249, no. 11, p. 804-806.
310 GEOLOGIC NAMES OF NORTH AMERICA

River glacial stage

Pleistocene (lowan) : Colorado.

R. L. Ives, 1937, (abs.) Colo. Univ. Studies, v. 25, no. I, p. 75; 1938, Geol. Soc. 

America Bull., v. 49, no. 7, p. 1057-1058.

River Lake granite

Precambrian: Northwest Territories (Mackenzie), Canada. 

A. W. Joliffe, 1938, Canada Geol. Survey Paper 38-21, p. 10.

Riverside series

Pennsylvanian: Nova Scotia, Canada.

F. W. Gray and R. H. Gray, 1941, Canadian Inst. Mining and Metallurgy Trans., v. 44, 

p. 296.

River Styx conglomerate facies (of Cuyahoga formation) 

Mississippian: Ohio. 

F. T. Holden, 1941, 111. Acad. Sci. Trans., v. 34, no. 2, p. 172.

Riverton cyclothem or formation

Pennsylvanian (Des Moines) : Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 22 ; 

1938 Kans. Acad. Sci. Trans., v. 41, p. 193,196.

Rivieradal sandstones

Precambrian (Greenlandian) : North Greenland.

Erdhard Frankl, 1954, Meddel. om Gr0nland, bind 116, nr. 2, p. 40-41, 56, 78, pi. 1.

Riviere Gauche formation 

Pliocene: Haiti.

Jacques Butterlin, [1952], Resume1 de these pr6sent6e a la Sorbonne, La g6ologie de la 

R publique d'Haiti et ses rapports avec celle des regions voisines (mimeo.), p. 4; 

1954, Inst. Frangais d'Haiti Mem. 1, p. 67.

Riviere Grise formation

Oligocene to Miocene: Haiti.

Jacques Butterlin, 1950, Rev. Soc. Hai'tienne Histoire, G6ographie et Geologie, v. 21, 

no. 76, p. 56 ; 1954, Inst. Frangais d'Haiti M6m. 1, p. 63.

Rivoli member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 24, figs. 3, 12.

Robbers Roost gravel

Quaternary: Arizona.

Donaldson Koons, 1948, Plateau, v. 20, no. 4, p. 54 (fig. 1), 58.

Rob Camp limestone

Middle Ordovician: Virginia.

R. L. Miller and W. P. Brosge, 1950, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 104.

Roberts Arm volcanics

Middle Ordovician (?) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 10-14.

Roberts Mountains formation

Silurian: Nevada.

C. W. Merriam, 1940, Geol. Soc. America Special Paper 25, p. 11-12,
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 311

Robertson formation

Lower Jurassic (Lias) : Oregon.

E. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 238-239.

Roberts Ranch member (of Dagger Flat formation) 

Upper Cambrian: Texas. 

J. L. Wilson, 1954, Jour. Paleontology, v. 28, no. 3, p. 251, 252.

Robeson conglomerate

Triassic: Pennsylvania.

D. B. McLaughlin, 1939, Mien. Acad. Sci. Arts and Letters Papers, v. 24, pt. 4, 

p. 60, 73.

Robin Hood formation

Precambrian (Archean) : New Brunswick, Canada.

G. S. Mackenzie, 1951, Canada Geol. Survey Paper (Prelim. Map) 51-15.

Robinson Branch formation or coal cycle

Pennsylvanian (Desmoinesian) : Kansas, Missouri, Oklahoma, Nebraska, and

Iowa. 

W. V. Searight and others, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 12,

p. 2747-2749. 

C. C. Branson, 1954, Okla. Geol. Survey Guidebook 2, p. 5.

Roblar leucogranite

Cretaceous: California.

B. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 97-98.

Robson limestone

Ordovician: British Columbia and Alberta, Canada.

C. D. Walcott, 1913, Smithsonian Misc. Coll., v. 57, no. 12, p. 334, 336.

Rockaway conglomerate bed (in Lutie member of Theodosia formation) 

Lower Ordovician: Missouri.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 27.

Rock Bench Quarry beds (of Polecat Bench formation)

Paleocene: Wyoming.

G. L. Jepsen in W. B. Scott, 1937, A history of land mammals in the Western Hemisphere : New York, Macmillan Co., p. 99 ; 1940, Am. Philos. Soc. Proc., v. 83, 

no. 2, p. 234-236.

Rockcliffe formation

Middle Ordovician (Chazy) : Ontario, Canada.

A. E. Wilson, 1937, Royal Soc. Canada Trans., ser. 3, v. 31, sec. 4, p. 46, 48.

Rock Creek conglomerate member (of Maroon formation) 

Permian (?) : Colorado. 

C. F. Bassett, 1939, Geol. Soc. America Bull., v. 50, no. 12, pt. 1, p. 1864,

Rock Creek member (of Fernie formation)

Jurassic : British Columbia and Alberta, Canada. 

P. S. Warren, 1934, Am. Jour. Sci., ser. 5, v. 27, p. 59.

Rockdale dolomite

Silurian (Niagaran) : Illinois.

T. B. Savage in C. K. Swartz and others, 1942, Geol. Soc. America Bull., v. 53, no. 4, 

p. 536, Chart 3.
312 GEOLOGIC NAMES OF NORTH AMEKICA

Rockdell limestone

Middle Ordovician: Virginia.

B. N. Cooper, 1945, Va. Geol. Survey Bull. 66, p. 17,137, 208.

Rockledge limestone breccia 

Upper Cambrian: Vermont. 

Charles Schuchert, 1937, Geol. Soc. America Bull., v. 48, no. 7, p. 1049-1052.

Rock Levee formation 

Ordovician: Missouri.

J. G. Grohskopf, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 3, p. 360-362.

Rockly Bay formation

Miocene, upper, and Pliocene: Tobago, British West Indies. 

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 842-844.

Rockport Quarry limestone

Middle Devonian: Michigan.

G. A. Cooper and A. S. Warthin, 1941, Washington Acad. Sci. Jour., v. 31, no. 6, p. 260.

Rock Prairie sandstone

Eocene (Jackson) : Texas.

A. A. L. Mathews, 1950, Tex. Eng. Expt. Sta. Research Kept. 14, p. 5, geol. man.

Rock Stream flagstone member (of Cashaqua shale) 

Upper Devonian: New York. 

W. H. Bradley and J. F. Pepper, 1941, U. S. Geol. Survey Bull. 899, p. 12-13.

Rockwood Park granodiorite

Pre-Carboniferous: New Brunswick, Canada.

A. 0. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 35-36.

Rocky Branch bone bed (in Jeffersonville limestone) 

Middle Devonian: Indiana. 

J. W. Wells, 1944, Geol. Soc. America Bull., v. 55, no. 3, p. 282.

Rocky Brook formation

Lower Carboniferous: Newfoundland, Canada.

A. O. Hajes, 1949, Newfoundland Geol. Survey Inf. Circ. 6, Map 2.

Rocky Butte volcanics 

Pleistocene: Oregon. 

R. C. Treasher, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 2034.

Rocky Point beds

Oligocene, upper: Oregon.

F. W. Libbey, W. D. Lowry, and R. S. Mason, 1945, Oreg. Dept. Geology and Mineral 

Industries Bull. 29, p. 8-9.

Rocky Point conglomerate (in Deese formation) 

Pennsylvanian (Des Moines) : Oklahoma. 

C. W. Tomlinson, 1937, Ardmore Geol. Soc. [Guidebook] Field Trip, March 13, Road

log, p. 1, 2, geol. map. 

R. C. Moore and others, 1944, Geol. Soc. America Bull., v. 55, no. 6, p. 697, Chart 6

(column 37).

R0de 0 conglomerate

Age unknown: East Greenland.

Edvard Bay, 1895, Meddel. om Gr0nland, hefte 19, pt. 6, p. 160-162; pt. 9, p. 263-264.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 313

Rodessa formation

Lower Cretaceous (Comanche series) : Subsurface in Louisiana, Texas, and

Arkansas.

W. B. Weeks, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 8, p. 970, fig. 4. 

G. E. Murray, 1948, La. Dept. Conserv. Geol. Bull. 25, p. 65-66.

Rodetal conglomerate (in Margrethetal series) 

Middle Devonian: Northeast Greenland. 

Heinrich Butler, 1954, Meddel. om Grjfaland, bind 116, nr. 7, p. 46, 48, 113.

R0dryggen beds

Lower Cretaceous (upper Valanginian) : Northeast Greenland.

Wolf Maync, 1949, Meddel. om Grjfoland, bind 133, nr. 3, p. 70-72, 192-195, 281.

Roger Park basaltic breccia

Tertiary: Utah.

Eugene Callaghan, 1939, Am. Geophys. Union Trans. 20th Ann. Meeting, pt. 3, 

p. 446-447.

Rogers City limestone or formation

Middle Devonian: Michigan.

G. M. Ehlers and R. E. Radabaugh, 1937, Mich. Acad. Sci. Arts and Letters Sec. Geology 

and Mineralogy [Guidebook] 7th Ann. Field Excursion, [p. 8-91; 1938, Mich. Acad. 

Sci. Arts and Letters Papers, v. 23, p. 441-445.

Rogue formation

Upper Jurassic: Oregon.

F. G. Wells and G. W. Walker, 1953, Geology of the Galice quadrangle, Oregon: U. S. 

Geol. Survey Geol. Quadrangle Map [GQ 25].

Rohnerville formation

Pleistocene, upper: California.

B. A. Ogle, 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 164, p. 13 (fig. 3), 63, pi. 1.

Rolling Fork limestone member (of Brodhead formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 152-153.

Romeo member (of Joliet formation) 

Silurian (Niagaran) : Illinois. 

D. L. Graf, 1952, III. Geol. Survey Rept. Inv. 161, p. 3.

Romero conglomerate (in Debris Dam sandstone) 

Upper Cretaceous: California.

B. M. Page, J. G. Marks, and G. W. Walker, 1951, Am. Assoc. Petroleum Geologists 

Bull., v. 35, no. 8, p. 1733, 1741, 1743.

Ronde Klip conglomerate

Pleistocene: Curasao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologic en geohydrologie van net Eiland Curasao : Delft, 

J. Waltman, Jr., p. 29, strat. table.

Ronning group

Silurian: Northwest Territories (Mackenzie) and Yukon, Canada.

J. S. Stewart, 1944, Canadian Inst. Mining and Metallurgy Trans., v. 47, p. 163. 

G. S. Hume and T. A. Link, 1945, Canada Geol. Survey Paper 45-16, p. 11-15.

Roop sandstone member (of Alnambra formation) 

Eocene, upper: California. 

C. E. Weaver, 1953, Wash. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 54-65.
314 GEOLOGIC NAMES OF NORTH AMERICA

Roosevelt member (of Apache group)

Precambrian (Algonkian) : Arizona.

N. A. E. Hinds, 1936, Carnegie Inst. Washington Pub. 463, p. 32.

Root Valley sandstone

Lower Ordovician (Beekmantownian) : Minnesota and Iowa.

C. R. Stauffer and G. A. Thiel, 1941, Minn. Geol. Survey Bull. 29, p. 59-63.

Rosaire group

Cambrian (?) : Quebec, Canada.

Jacques Beland, 1952, Quebec Dept. Mines Prelim. Kept. 279, p. 4.

Roseau tuffs

Age not stated: Dominica, British West Indies.

J. W. W. Spencer, 1902, Geol. Soc. London Quart. Jour., v. 58, pt. 3, p. 348.

Roseland anorthosite

Precambrian: Virginia.

C. S. Ross, 1941, U. S. Geol. Survey Prof. Paper 198, p. 2-6.

Rosemount member (of Montreal formation)

Middle Ordovician (Trenton) : Quebec, Canada.

T. H. Clark, 1941, Quebec Dept. Mines Prelim. Kept. 158, p. 4; 1952, Geol. Kept. 46, 

p. 67-71.

Rosenburg series

Age not stated: Quebec, Canada.

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines Geol. Kept. 20, v. 2, p. 398.

Rosette bed (of Midway formation) 

Tertiary, lower: Texas.

R. H. Cuyler and A. W. Weeks, 1940, in Geol. Soc. America [Guidebook] 53d Ann. 

Meeting, p. 24,

Ross Mine formation

Permian (Guadalupe) : Texas.

C. C. Rix, 1953, in W. Tex. Geol. Soc. [Guidebook] Spring Field Trip, May 28-30, p. 5, 

14, 20.

Rota limestone

Pleistocene: Mariana Islands (Rota).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation 

in library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas: Japan 

Hydrog. Office Bull., v. 11, p. 57, table 4 [English translation in library of U. S. 

Geol. Survey, p. 68].

Rothwell shale member (of Muldraugh formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 219-220.

Roti granite

Devonian: Newfoundland, Canada.

J. R. Cooper, 1954, Canada Geol. Survey Mem. 276, p. 24.

Roubaix group

Precambrian: South Dakota.

B. J. Berg, 1946, S. Dak. State Geol. Survey Rept. Inv. 52, p. 7.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 315

Rouge River formation

Ordovician: Ontario, Canada.

B. A. Liberty, 1955, Geol. Assoc. Canada Proe., v. 7, pt. 1, p. 145.

Roughlock siltstone

Middle Ordovician (Mohawkian) : South Dakota.

M. R. McCoy, 1952, Billings Geol. Soc. Guidebook 3d Ann. Meld Conf., p. 44, 46.

Rough Mountain conglomerate lentil (in Brownwood shale) 

Mississippian: Texas. 

P. B. Plummer, 1950, Tex. Univ. Bur. Econ. Geology Pub. 4329, p. 95.

Round Head breccia

Ordovician: Newfoundland, Canada.

Philip Oxley, 1953, Newfoundland Geol. Survey Kept. 5, p. 33.

Round Hill series

Miocene, upper: Jamaica, British West Indies.

C. A. Matley, 1940, Geol. Soc. London Abs. Proc. 1373, p. 102.

Round Prairie formation

Pennsylvanian (Morrow) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 895-900.

Roundtop group

Pennsylvanian: Wyoming and South Dakota.

G. B. Condra, E. C. Reed, and O. J. Scherer, 1940, Nebr. Geol. Survey Bull. 13, p. 2, 

3, 32, 44.

Roundtop member (of Richfield formation)

Precambrian or Lower Cambrian: British Columbia, Canada. 

A. H. Lang, 1938, Canada Geol. Survey Paper 38-16, p. 8.

Round Valley limestone

Pennsylvanian (Morrowan) : Utah and Colorado.

Walter Sadlick, 1955, Wyo. Geol. Assoc. Guidebook 10th Ann. Field Conf., p. 50, 56-57.

Rouyn Lake sediments

Precambrian: Quebec, Canada.

H. J. Conolly and R. C. Hart, 1936, Canadian Inst. Mining and Metallurgy Trans., 

v. 39, p. 10.

Rowe formation or coal cycle

Pennsylvanian (Desmoinesian) : Kansas, Iowa, Missouri, Nebraska, and 

Oklahoma.

W. V. Searight and others, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 12,

p. 2747-2749. 

C. C. Branson, 1954, Okla. Geol. Survey Guidebook 2, p. 6.

Row Park limestone

Middle Ordovician: West Virginia, Maryland, and Pennsylvania. 

R. B. Neuman, 1951, Geol. Soc. America Bull., v. 62, no. 3, p. 278-284.

Rubio Peak formation

Tertiary, upper: New Mexico.

R. M. Hernon, W. R. Jones, and S. L. Moore, 1953, N. Mex. Geol. Soc. Guidebook 4th

Field Conf., p. 120. 

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Res. Bull. 37, p. 39-42.

426779 57 21
316 GEOLOGIC NAMES OF NORTH AMERICA

Ruby diorite

Age not stated: Arizona.

G. M. Fowler, 1938, Ariz. Bur. Mines Bull. 145, Geol. Ser. 12, p. 121, 122, pi. 32.

Ruby group

Precambrian (Proterozoic) : British Columbia, Canada. 

E. F. Roots, 1948, Canada Geol. Survey Paper 48-5, p. 6.

Ruby Road formation

Age not stated: Arizona.

B. P. Webb and K. C. Coryell, 1954, U. S. Atomic Energy Comm. RMB-2009, p. 7, pi. 1.

Ruddell shale

Upper Mississippian: Arkansas.

MacKenzie Gordon, Jr., 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 11, 

p. 1631-1634.

Rudist limestones

See Barrettia and/or Titanosarcolites limestones.

Rumsy Ridge sandstone member (of Fish Creek formation) 

Lower Silurian: New York, and Ontario, Canada. 

D. W. Fisher, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 9, p. 1988.

Runa Lake granodiorite

Precambrian: Northwest Territories (Mackenzie), Canada. 

B. D. Prusti, 1955, (abs.) Canadian Mining Jour., v. 76, no. 3, p. 76.

Runnymede sandstone member (of Ninnescah formation) 

Permian: Kansas. 

G. H. Norton, 1989, Am. Assoc. Petroleum Geologists Bull., v. 23, no. 12, p. 1773-1774.

Russell feldspathic gabbro 

Precambrian: New York. 

A. F. Buddington, 1939, Geol. Soc. America Mem. 7, p. 53-54, 260-267.

Russell formation

Ordovician (Richmond) : Ontario, Canada.

A. E. Wilson, 1940, Canada Geol. Survey Map 587A.

Russell slate

Upper Cambrian: Vermont.

Rudolf Ruedemann, 1947, Geol. Soc. America Mem. 19, p. 165.

Russell Creek limestone member (of Senora formation)

Pennsylvanian (lower Desmoinesian): Oklahoma, Kansas, and Missouri. 

C. C. Branson, 1954, Okla. Aoad. Sci. Proc., v. 33, p. 191,193.

Russia limestone member (of Denmark formation) 

Middle Ordovician (Mohawkian): New York. 

G. M. Kay, 1943, Am. Jour. Sci., v. 241, no. 10, p. 598-601.

Rust limestone member (of Cobourg formation) 

Middle Ordovician (Mohawkian) : New York. 

G. M. Kay, 1943, Am. Jour. Sci., v. 241, no. 10, p. 598, 601-602.

Ruth formation

See Ruth Lake formation.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 317

Ruth Lake formation

Precambrian (Proterozoic): Quebec and Newfoundland (Labrador), Canada.

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 10.

Rye formation

Probably Ordovician and Silurian: New Hampshire.

M. P. Billings in M. P. Billings, John Rodgers, and J. B. Thompson, Jr., 1952, Guidebook for field trips in New England: Geol. Soc. America, p. 23, 24, 29, 44.

Saavedra member (of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 11, 15-16.

Sabana Grande siliceous limestone 

Age not stated: Costa Rica. 

D. F. MacDonald and others, 1919, [Costa Rica] La Gaceta, Diario Oficial, aflo 41,

no. 138, p. 352. 

B. N. Webber, 1942, Am. Inst. Mining and Metall. Engineers Tech. Pub. 1445, p. 3.

Sabanita formation

See Sabanitas formation.

Sabanitas formation

(?) Miocene, middle: Panama.

[T. F. Thompson], 1943, Panama Canal, Special Eng. Div., 3d Locks Proj., pt. 2, chap.

5, p. 7. 

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, p. 906, 920.

Sabattus garnet schist

Cambro-Ordovician(?) : Maine.

L. W. Fisher, 1936, Am. Mineralogist, v. 21, no. 5, p. 323.

Sabine Island formation

Eocene: Northeast Greenland.

Lange Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 263.

Sacatar quartz diorite

Paleozoic (?) orMesozoic(?): California.

W. J. Miller and R. W. Webb, 1940, Calif. Jour. Mines and Geology, v. 36, no. 4, p. 354- 

355, 378 (fig. 31), pi. 2.

Sacate formation

Eocene, middle: California.

F. R. Kelly, 1943, Am. Assoc. Petroleum Geologists Bull., v. 27, no. 1, p. 10-11.

Sacramento tuff and sand member (of Tuscan formation) 

[Pliocene]: California. 

R. C. Treasher, 1947, (abs.) Geol. Soc. America Bull., v. 58, no, 12, pt. 2, p. 1257.

Sacramento Hill porphyry

Lower Cretaceous: Arizona.

W. G. Hogue and E. D. Wilson, 1950, Ariz. Bur. Mines Bull. 156, Geol. Ser. 18, p. 21.

G. W. Bain, 1952, Econ. Geology, v. 47, no. 3, p. 306.

Saddleback basalt

Pliocene: California.

H. S. Gale, 1946, Calif. Jour. Mines and Geology, v. 42, no. 4, p. 326, 346-350.
318 GEOLOGIC NAMES OF NORTH AMERICA

Saddlebag Lake conglomerate

Precambrian (Knife Lake) : Minnesota.

V. G. Sleight in 3. T. Stark and V. G. Sleight, 1939, Geol. Soc. America Bull., v. 50, 

no. 7, p. 1033-1034.

Saddle Bayou lentil (of Verda member of Yazoo clay) 

Eocene, upper: Louisiana. 

H. N. Pisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 78,102-103.

Safford dacite

Tertiary: Arizona.

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 739-740.

Safford tuff

Tertiary: Arizona.

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 731-733.

Sagavanirktok formation

Tertiary, lower: Alaska.

George Gryc, W. W. Patton. Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

V. 41, no. 5, p. 167.

Sagavanirktok glaciation

Pleistocene (pre-Wisconsin) : Alaska.

R. L. Detterman in T. L. Pewg and others, 1953, U. S. Geol. Survey Cir. 289, p. 11, 13 

(table 1).

Sage pebble-conglomerate member (of Snowy Range formation) 

Upper Cambrian: Montana. 

Christina Lochman, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 11, p. 2212.

Sage Creek basalts

Eocene, upper: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 373, pi. 1.

Sage Valley limestone member (of Goldens Ranch formation) 

Eocene, middle or upper: Utah. 

Siegfried Muessig, 1951, Science, v. 114, no. 2957, p. 234.

Sail Harbor group

Permian or older: Northwest Territories (Ellesmere Island), Canada. 

B. G. Blackadar, 1954, Canada Geol. Survey Paper 53-10, p. 12.

St. Andrew gabbroic anorthosite 

Precambrian: Ontario, Canada. 

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.

St. Andrews beds

Eocene, lower: Barbados, British West Indies.

A. B. Thompson, 1925, Oil field exploration and development, v. 1, Oil field principles:

New York, N. Y., D. Van Nostrand Co., p. 395. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1552-1553,

1581.

St Ann formation

Pennsylvanian: Nova Scotia, Canada.

W. A. Bell and B. A. Goranson, 1938, Canada Geol. Survey Map 359A.

St. Anne formation

See St. Ann formation.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 319

St. Clair facies (of Murfreesboro formation) 

Middle Ordovician (Chazyan) : Virginia. 

Charles Butts, 1940, Va. Geol. Survey Bull. 52. pt. 1, p. 126,132-134.

St. Cloud gray granodiorite

Precambrian (Algoman) : Minnesota.

W. S. Woyskl, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1002, 1012, pi. 1.

St. Cloud red granite

Precambrian (middle Keweenawan) : Minnesota.

M. S. Woyski, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1002,1005-1006.

St. Dominique formation

Ordovician (Chazy): Quebec, Canada.

H. R. Belyea, 1952, Canada Geol. Survey Bull. 22, p. 12-15.

St. Edouard member (of Grand Rapids formation)

Lower Cretaceous: Alberta, Canada (subsurface). 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 5.

St. Edwards tuff

Upper Cretaceous: Texas.

C. O. Durham, Jr., 1955, Corpus Christ! Geol. Soc. [Guidebook] Ann. Field Trip, March 

11-12, [p. 59], pL 16.

St. Flavien basic eruptives

Cambrian and Ordovician: Quebec, Canada.

T. H. Clark, 1948, Quebec Dept. Mines Prelim. Kept. 225, p. 3, geol. map (Map 694).

St. Francis series

Ordovician: Quebec, Canada.

T. H. Clark in H. C. Cooke and T. H. Clark, 1937, Canada Geol. Survey Mem. 211. 

p. 37-42.

Saint George granite or plutonics

Devonian: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 25.

St. Georges soil

Pleistocene: Bermuda Islands.

R. W. Sayles, 1931, Am. Acad. Arts and ScL Proc., v. 66, no. 11, p. 395.

St. Gerrard member (of Lake Aylmer formation) 

Devonian: Quebec, Canada. 

T. H. Clark, 1942, Royal Soc. Canada Trans., ser. 3, v. 36, sec. 4, p. 17-18.

St. Helens breccia

See St. Helens Island breccia.

St. Helens Island breccia

Devonian (?) : Quebec, Canada.

A. W. Nolan and J. D. Dixon, 1903, Canadian Record Sci, v. 9, no. 1, p. 53-66. 

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines and Geol. Rept. 20, v. 2. 

p. 276-277.

St. Hilaire member (of Nicolet River formation) 

Ordovician: Quebec, Canada. 

T. H. Clark, 1947, Quebec Dept. Mines Prelim. Rept. 204, p. 9,10.
320 GEOLOGIC NAMES OF NORTH AMERICA

St. Ignace formation

Upper Silurian (Cayugan): Michigan.

G. M. Ehlers in K. K. Landes, G. M. Ehlers, and G. M. Stanley, 1945, Mich. Dept. 

Conserv. Geol. Survey Div. Pub. 44, Geol. Ser. 37, p. 34, 35, 53-73.

St. Jacques drift

Quaternary: New Brunswick and Quebec, Canada. 

H. A. Lee, 1955, Canada GeoL Survey Paper 55-15, p. 6-8.

St. James member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Trl-State Geol. Soe. Guidebook 16th Ann. 

Field Conf., figs. 3,9.

Saint Jean River series

Silurian and Devonian: Quebec, Canada.

H. W. McGerrigle, 1950, Quebec Dept. Mines Geol. Bept. 35, p. 24.

J. P. Caley and others in M. W. Ball, 1951, Am. Assoc. Petroleum Geologists Bull., 

v. 35, no. 2, p. 471.

Saint John volcanics

Precambrian: New Brunswick, Canada.

A. O. Hayes and B. F. Howell, 1937, Geol. Soc. America Special Paper 5, p. 48-54.

Saint John River formation 

See Saint Jean River series.

St. Joseph boulder bed

Paleocene: Trinidad, British West Indies.

Hans Boli, 1952, Jour. Paleontology, v. 26, no. 4, p. 670, 671.

Saint Jude igneous breccia

Precambrian: Quebec, Canada.

W. G. Robinson, 1943, Quebec Dept. Mines Prelim. Rept. 279, p. 6-7.

St. Juste group

Silurian (?) or Devonian (?) : Quebec, Canada.

Jacques Belaud, 1952, Quebec Dept. Mines Prelim. Rept. 279, p. 6-7.

St. Lawrence granite

Precambrian: Newfoundland, Canada.

R. E. Van Alstine, 1944, Econ. Geology, v. 39, no. 2, p. 111-113.

St. Lawrence shale

Devonian: Quebec, Canada.

E. M. Kindle, 1938, Bull. Am. Paleontology, v. 24, no. 82, p. 46(12).

St. Luke limestone member (of Edinburgformation) 

Middle Ordovician: Virginia. 

B. N. Cooper and G. A. Cooper, 1946, GeoL Soc. America Bull., v. 57, no. 1, p. 81.

St. Marks facies (of Tampa stage) 

Miocene, lower: Florida. 

H. S. Puri, 1953, Pla. Geol. Survey GeoL BulL 36, p. 20-21.

St. Martin formation

Middle Ordovician (Chazy): Quebec and Ontario, Canada.

A. E. Wilson, 1937, Royal Soc. Canada Trans., ser. 3, v. 31, see. 4, p. 46, 54.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 321

St. Martins intrusives and extrusives

Precambrian: New Brunswick, Canada.

A. O. Hayes and B. P. Howell, 1937, Geol. Soc. America Special Paper 5, pL 9. 

F. J. Alcock, [1938], Canada Geol. Surrey Mem. 216, p. 13.

St. Marysan substage

Miocene, middle: Central Atlantic Coastal Plain.

D. S. Malkin, 1953, Jour. Paleontology, v. 27, no. 6, p. 767-768.

Saint Michel member (of Montreal formation)

Middle Ordovician (Trenton): Quebec, Canada.

T. H. Clark, 1941, Quebec Dept. Mines Prelim. Rept. 158, p. 4; 1952, Geol. Kept. 46, 

p. 65-67.

St. Paul group

Middle Ordovician: West Virginia, Maryland, and Pennsylvania. 

R. B. Neuman, 1951, Geol. Soc. America Bull., v. 62, no. 3, p. 278.

St. Paul member (of Grand Rapids formation)

Lower Cretaceous: Alberta, Canada (subsurface). 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, flg, 2.

St. Pauls group

Ordovician: Newfoundland, Canada.

Helgi Johnson, 1941, N. Y. Acad. Sci. Trans., ser. 2, v. 3, no. 6, p. 143.

St. Regis granite

Precambrian: New York.

A. P. Buddington, 1937, N. T. State Mus. Bull. 309, p. 34-35, 38, 45-46.

Sainte Therdse member (of Laval formation)

Middle Ordovician (Chazy) : Quebec, Canada.

T. H. Clark, 1944, Royal Soc. Canada Trans., sec. 4, v. 38, p. 29 ; 1952, Quebec Dept. 

Mines Geol. Rept. 46, p. 43, 44.

St. Thomas-in-the-Vale marls

Miocene, lower: Jamaica, British West Indies.

C. A. Matley, 1946, Outline of the geology of the Kingston district of Jamaica: Inst. 

of Jamaica, [p. 3], geol. map; 1951, Geology and physiography of the Kingston 

district, Jamaica: Inst. of Jamaica, p. 54-60, geol. map.

St. Wendells limestone (in McLeansboro formation) 

Pennsylvanian: Indiana.

J. A. Culbertson, 1932, The paleontology and stratigraphy of the Pennsylvanian strata 

between Caseyville, Ky. and Vincennes, Ind.; Abs. Thesis, 111. Univ.: Urbana, 111., 

p. 3, 7.

Sais quartzite

Precambrian: New Mexico.

J. T. Stark and E. C. Dapples, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, 

pt. 2, p. 1936; 1946, v. 57, no. 12, pt. 1, p. 1127-1129.

Saladito formation

Oligocene: Tamaulipas, Mexico.

Manuel Alvarez, Jr., 1951., Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2, 

p. 365.

Salisbury formation

Pennsylvanian: New Brunswick, Nova Scotia, and Prince Edward Island,

Canada.

J. P. Caley and others, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2, p. 478. 

W. C. Gussow, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 7, p. 1755-1756.
322 GEOLOGIC NAMES OF NORTH AMERICA

Salish group

Recent: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 11, 48, map.

Salitral shale tongue (of Chinle formation) 

Upper Triassic: New Mexico.

G. H. Wood and S. A. Northrop, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 57.

Salmon Lake glaciatiou

Pleistocene (Wisconsin) : Alaska.

D. M. Hopkins in T. L. PSwe" and others, 1953, U. S. Geol. Survey Circ. 289, p. 10, 13 

(table 1).

Saltash formation

Precambrian: Vermont.

W. F. Brace, 1953, Vt. Geol. Survey Bull. 6, p. 44-45, tables 2, 3.

Salt Creek conglomerate

Upper Cretaceous: California.

N. L. Tallaferro, 1954, in Northern Calif. Geol. Soc. [Guidebook] Spring Field Trip, 

[p. 6, 7, 8], correlation chart.

Salter member (of Mount Head formation) 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Conf. and 

Symposium, p. 68.

Samelias formation

Precambrian: South Dakota.

J. R. Berg, 1946, S. Dak. State Geol. Survey Rept. Inv. 52, p. 7.

Sams Creek metabasalt

Precambrian(?): Maryland.

A. J. Stose and G. W. Stose, 1946, Md. Dept. Geology, Mines and Water Res., Carroll 

and Frederick Counties Rept., p. 58, 63-65.

San Andres formation

Upper Jurassic and Lower Cretaceous: Cuba.

L. W. J. Vermunt, 1937, Geog. Geol. Meded. (Utrecht Univ.) Physiog.-Geol. Reeks, no. 

13, p. 5, 7-15.

San Antonio formation

Precambrian: Manitoba, Canada.

C. H. Stockwell, 1938, Canada Geol. Survey Mem. 210, p. 19-20.

San Antonio Canyon group 

Age unknown: California. 

K. J. Hsu, 1955, 'Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 295, map 1.

San Ardo group

Pliocene: California.

T. A. Baldwin, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 10, p. 1987-1988.

Sanastee sandstone member (of Mancos shale) 

Cretaceous: New Mexico.

C. T. Smith, 1951, in N. Mex. Geol. Soc. Guidebook 2d Field Conf., p. 13, 79. 

Dan Bozanic, 1955, Four Corners Geol. Soc. Guidebook [1st] Field Conf., p. 91.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 323

Sanatorium limestone lentil (in Gueda Springs shale member of Wellington 

formation) 

Permian: Kansas. 

W. A. Ver Wiebe, 1937, Wichita Municipal Univ. Bull., v. 12, no. 5, p. 14.

San Bartolo formation

Jurassic: Vera Cruz, Mexico.

Ramiro Eobles Bamos, 1942, Irrigacifin en Mexico, v. 23, no. 3, p. 45 (correlation

chart). 

E. W. Imlay and others, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9,

p. 1751.

Sand Bay volcanics

Tertiary: Alaska (Aleutian Islands).

F. S. Simons and D. B. Mathewson, 1947, U. S. Geol. Survey Alaskan Volcano Inv. 

Kept. 2, pt. 4, p. 61-63.

Sand Canyon formation

Pleistocene, upper: New Mexico.

Sheldon Judson, 1950, Geol. Soc. America Bull., v. 61, no. 3, p. 263; 1953, Smithsonian Misc. Coll., v. 121, no. 1, p. 21-22, 30.

Sand Canyon member (of Sheep Creek formation) 

Miocene (Hemingford) : Nebraska. 

M. K. Blias, 1942, Geol. Soc. America Special Paper 41, p. 129-131, pi. 17.

Sand Draw sandstone lentil (of White River formation) 

Eocene or Oligocene: Wyoming. 

F. B. Van Houten, 1954, TJ. S. Geol. Survey Oil and Gas Inv. Map OM 140, sheet 2.

Sanderson formation

Lower Mississippian: Indiana, Kentucky, and Ohio.

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 847-849, 857-858, 875- 

878, 879.

Sandersville limestone member (of Barnwell formation) 

Eocene: Georgia. 

C. W. Cooke, 1943, U. S. Geol. Survey Bull. 941, p. 62-63.

Sandgirt Lake formation

Precambrian: Newfoundland (Labrador), Canada. 

E. H. Kranck, 1953, Canada Geol. Survey Bull. 26, p. 4, 37.

Sandholdt shale

Miocene, lower and middle: California.

E. E. Thorup, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1958 ; 1943, 

Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 464, 466.

Sandpile group

Upper Ordovician and Lower Silurian: British Columbia, Canada. 

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Sandtrap conglomerate

Pliocene, upper(?): Arizona.

S. G. Lasky and B. N. Webber, 1949, U. S. Geol. Survey Bull. 961, p. 35-38.

San Fernando argiline

Upper Cretaceous: Trinidad, British West Indies.

G. A. Waring, 1926, Johns Hopkins Univ. Studies in Geology, no. 7, p. 29, 41. 

E. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., 

J. P. MacGowan, p. 440.
324 GEOLOGIC NAMES OF NORTH AMERICA

San Fernando formation

Cretaceous: Baja California, Mexico.

[C. H. Beal], 1924, Bol. del Petroleo, v. 17, no. 6, p. 421; v. 18, no. 1, p. 49,

geol. map. . 

C. H. Beal, 1948, Geol. Soc. America Mem. 31, p. 38-40.

Sanford quartzite

Triassic(?): California.

G. A. Schroter, 1938, Bng. and Mining Jour., v. 139, no. 4, p. 44.

San Gregorio formation

Oligocene(?) to Miocene, lower (?): Baja California, Mexico.

[C. H. Beal], 1924, Bol. del Petroleo, v. 17, no. 6, p. 422. 

C. H. Beal, 1948, Geol. Soc. America Mem. 31, p. 54-56.

San Jacinto granodiorite

Jurassic or Cretaceous: California.

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 60-61, pi. 1.

San Joaquin facies (of El Doctor limestone) 

Lower Cretaceous: Queretaro, Mexico.

B. W. Wilson, J. P. Hernfindez M., and B. Meave T., 1955, Soc. Geol. Mexicana Bol., 

tomo 18, no. 1, p. 4, fig. 2.

San Jon formation

Pleistocene, upper: New Mexico.

Sheldou Judson, 1950, Geol. Soc. America Bull., v. 61, no. 3, p. 263; 1953, Smithsonian Misc. Coll., v. 121, no. 1, p. 18-21, 30.

San Jose formation

Eocene, lower: New Mexico.

G. G. Simpson, 1948, Am. Jour. Sci., v. 246, no. 5, p. 280-282; no, 6, p. 363-383.

San Jose" formation

Upper (?) Jurassic: San Luis Potosi, Mexico.

D. B. White and Jenaro Gonz&lez Eeyna, 1946, U. S. Geol. Surrey Bull. 946-B, p. 184.

San Jos6 quartz diorite

Cretaceous: Baja California, Mexico.

A. 0. Woodford and T. F. Harriss, 1938, Geol. Soc. America Bull., T. 49, no. 9, 

p 1314-1316.

Sankakuyama formation

Eocene (?): Mariana Islands (Saipan).

Bisaburo Tayama, 1938, Geomorphology, geology, and coral reefs of Saipan Island:

Tropical Industry Inst., Palau, South Sea Islands, Bull. 1 [English translation in

library of U. S. Geol. Survey, p. 50, 511. 

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. Paper

253, p. 7.

Sankoty sand

Pleistocene (Nebraskan): Illinois.

Leland Horberg, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, pt. 2, p. 1204; 

1950, 111. State GeoL Survey Bull. 73, p. 51-52.

San Marcos arkose

Lower Cretaceous: Coahuila, Mexico.

E. W. Imlay, 1940, Geol. Soc. America Bull., v. 51, no. 1, p. 121,123.

San Marcos formation

Pliocene, lower: Baja California, Mexico.

I. F. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 82, no. 9, p. 1768.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 325

San Marcos gabbro

Cretaceous: California.

P. S. Miller in C. S. Hurlbut, Jr., 1935, Am. Mineralogist, v. 20, no. 9, p. 609-611.

F. S. Miller, 1937, Geol. Soc. America BulL, v. 48, no. 10, p. 1399-1401.

San Marcos Mountain gabbro 

See San Marcos gabbro.

San Pablo phase (of Barbacoas formation) 

Pre-Eocene: Panama Canal Zone. 

E. T. Hill, 1898, Harvard Coll. Mus. Comp. Zoology Bull., v. 28, no. 5, p. 184-185.

San Pedro group

Pliocene: Arizona.

A. A. Stoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 297 (table).

San Pedro Valley formation

Pliocene (Blancan) to Pleistocene: Arizona and New Mexico.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 31, pi. 1.

Sanpete formation

Upper Cretaceous: Utah.

E. M. Spieker, 1946, U. ig. Geol. Survey Prof. Paper 205-D, p. 122,127.

San Ricardo [formation]

Lower Cretaceous: Tabasco, Mexico.

E. J. Guzman, Rodolfo Suarez, and Ernesto Lopez Ramos, 1953, 19* Cong. geol. 

tnternat. Comptes rendus, fasc. 16, pi. 1 (geol. map) [1954].

Sansom graywacke and quartzite

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 6-7.

San Souci volcanic formation

Lower Cretaceous: Trinidad, British West Indies.

A. G. Hutchtson, 1938, BoL Geologla y Minerla (Venezuela), v. 2, nos. 2-4 (English

ed.),p. 229, 235 (table). 

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull.,

v. 20, no. 59, p. 33, 35 (table).

Sans Sault group

Lower Cretaceous: Northwest Territories (Mackenzie), Canada. 

J. S. Stewart, 1945, Canada GeoL Survey Paper 45-29, p. 7.

Sansum formation

Triassic and Jurassic: British Columbia, Canada.

J. A. Allan, 1910, Canada Geol. Survey Summ. Rept. 1909, p. 99.

Santa Barbara series

Mesozoic: Chihuahua, Mexico.

P. B. King, 1947, Mexico Univ. Nac. AutCnoma, Inst. Geologla, Geofisica, y Geodesia, 

Cartas Geologla y Mineras 3.

Santa Cecilia limestone

Cretaceous: Oaxaca, Mexico.

Thomas Barrera, 1946, Gufa geo!6gica de Oaxaca: Mexico Univ. Nac., Inst. Geologla, 

p. 66.

Santa Clara basalt

Quaternary: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103.
326 GEOLOGIC NAMES OF NORTH AMERICA

Santa Clara complex

Precambrian: New York.

A. F. Buddington, 1937, N. Y. State Mus. Bull. 309, p. 8, 9, 29-^34, 37-38, 42-45.

Santa Cruz group

Upper Cretaceous: Arizona.

A. A. tStoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 297 (table).

Santa Emilia formation

Upper (?) Jurassic: San Luis Potosi, Mexico.

D. E. White and Jenaro Gonzfilez Reyna, 1946, U. S. Geol. Survey Bull. 946-E, p. 134.

Santa Eulalia formation

Cretaceous: Baja California, Mexico.

A. O. Woodford and T. F. Harriss, 1938, Geol. Soc. America Bull., v. 49, no. 9, p. 

1310-1313.

Santa Lucia clay

Miocene, middle: Trinidad, British West Indies.

G. A. Waring, 1926, Johns Hopkins Univ. 'Studies in Geology, no. 7, p. 57.

Santa Rita granodiorite porphyry

Cretaceous or younger: New Mexico.

P. F. Kerr and others, 1950, Geol. Soc. America Bull., v. 61, no. 4, p. 288-289, 302.

Santa Rosa beds

Eocene: Mariana Islands (Guam).

Bisaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 47, table 4 [English translation in library of U. S. Geol. Survey, p. 57 J.

Santa Rosalia formation

Pleistocene: Baja California, Mexico.

I. F. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9. p. 1782-1784

Santa Toriba beds

See Santo Toribio beds.

San Telmo formation

Cretaceous: Baja California, Mexico.

A. 0. Woodford and T. F. Harriss, 1938, Geol. Soc. America Bull., v. 49, no. 9, 

p. 1306-1310.

Santiago formation 

Eocene: California.

W. P. Woodring and W. P. Popenoe, 1945, U. S. Geol. Survey Oil and Gas Inv. 

Prelim. Chart 12.

Santiago Peak volcanics

Jurassic (?) : California.

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 22-25.

Santiam basalts

Pleistocene: Oregon.

T. P. Thayer, 1936, Jour. Geology, v. 44, no. 6, p. 706, 709 (fig. 2), 713 (fig. 3).

Santo Madero formation

Pliocene(?): Coahuila, Mexico.

A. E. V. Arellano, 1952, Am. Jour. Sci., v. 249, no. 8, p. 609-610.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 327

Santo Toribio beds

Miocene (?) : Guatemala.

L. H. Ower, 1922, Geology of British Honduras: Belize Independent, v. 8, no. 440; 

[1928], The Geology of British Honduras : Belize, British Honduras, Clarion Ltd., 

p. [153.

Sanup Plateau member (of Muav formation) 

Lower and/or Middle Cambrian: Arizona. 

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 90-92.

San Ysidro member (of Yeso formation) 

Permian: New Mexico.

G. H. Wood and S. A. Northrop, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Map 57.

Sappa formation

Pleistocene: Nebraska.

J. C. Frye, Ada Swineford, and A. B. Leonard, 1948, Jour. Geology, v. 56, no. 6,

p. 504-505, 520 (fig. 3), 522. 

G. E. Condra, E. C. Eeed, and E. D. Gordon, 1950, Nebr. Geol. Survey Bull. 15-A,

p. 22.

Sapperton sediments

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 11, 48, table.

Sappington sandstone member (of Three Forks shale) 

Upper Devonian and Mississippian: Montana. 

G. W. Berry, 1943, Geol. Soc. America Bull., v. 54, no. 1, p. 14-16.

Sardine series

Miocene: Oregon.

T. P. Thayer, 1936, Jour. Geology, v. 44, no. 6, p. 703-704, 709 (fig. 2), 713 (fig. 3).

Sargent Bay limestone

Silurian: Quebec, Canada.

T. H. Clark, 1936, Canadian Field Naturalist, v. 50, no. 3, p. 33.

Saroc Ridge group

Age unknown: California.

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 283, map 1.

Sarpy formation

Pennsylvanian (Missouri series) : Nebraska. 

G. E. Condra, 1949, Nebr. Geol. Survey Bull. 16, p. 37.

Saskatchewan group

Devonian: Subsurface in Saskatchewan and Manitoba, Canada; Montana,

North Dakota, and South Dakota. 

A. D. Baillie, 1953, Manitoba Dept. Mines and Nat. Res. Mines Br. Pub. 52-5, p. 30-32.

Saugerties limy shale

Lower (?) Devonian: New York.

G. H. Chadwick, 1940, N. Y. State Geol. Assoc. 16th Ann. Meeting Field Guide Leaflets, 

p. 2, 3 ; 1944, N. Y. State Mus. Bull. 336, p. 233 [1946].

Sauk sequence

Precambrian (upper Proterozoic) to Upper Cambrian: Central and western

United States.

L. L. Sloss, W. C. Krumbein, and E. C. .Dapples in C .R. Longwell, chm., 1949, Geol. 

Soc. America Mem. 39, p. 110-115.
328 GEOLOGIC NAMES OF NORTH AMERICA

Saunders group

Cretaceous: Alberta, Canada.

J. A. Allan and R. L. Rutherford, 1923, Alberta Research Council Rept. 6, p. 51.

Saw Mill conglomerate division (of Almy conglomerate) 

Paleocene: Utah. 

A. J. Eardley, 1944, Geol. Soc. America Bull., v. 55, no. 7, p. 842.

Sawtooth formation

Middle Jurassic: Montana and Idaho.

W. A. Cobban, 1945, Am. Assor. Petroleum Geologists Bull., v. 29, no. 9, p. 1270-1277.

Saxe Brook formation

Upper Cambrian (early Dresbachian?) : Vermont.

B. F. Howell, 1939, (abs.) Geol. Soc. America Bull., v. 50, no. 12, pt 2, p. 1864.

Sayreville sand member (of Raritan formation) 

Upper Cretaceous: New Jersey.

H. C. Barksdale and others, 1943, The ground-water supplies of Middlesex County, 

New Jersey: N. J. State Water Policy Comm. [Special Rept. 8], p. 101.

Scales Creek flow (in Portage Lake lava series)

Precambrian (middle Keweenawan series) : Michigan.

W. S. White, H. R. Cornwall, and R. W. Swanson, 1953, U. S. Geol. Survey Geol. 

Quadrangle Map GQ 27 [1954].

Scammon cyclothem or formation

Pennsylvanian (DesMoines): Kansas.

G. E. Abernathy, 1937, Kans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 22 ; 

1938, Kans. Geol. Soc. Trans., v. 41, p. 193, 195.

Scandian sub-age

Pleistocene: Kansas, Nebraska, and Iowa.

J. C. Frye and A. B. Leonard, 1955, Am. Jour. Sci., v. 253, no. 6, p. 362.

Scappoose formation

Oligocene, upper, or Miocene, lower: Oregon.

W. C. Warren and Hans Norbisrath, 1946, Am. Assoc. Petroleum Geologists Bull., 

v. 30, no. 2, p. 231-233.

Scatter formation

Lower Cretaceous: British Columbia and Yukon, Canada. 

E. D. Kindle, 1944, Canada Geol. Survey Paper 44-16, p. 11-12.

Scauminac formation

Devonian: New Brunswick, Canada.

H. M. Ami, 1900, Royal Soc. Canada Trans., 2d ser., v. 6, sec. 4, p. 208.

Scenic Point member (of Appekunny formation)

Precambrian (Belt) : Montana, and Alberta, Canada.

C. L. Fenton and M. A. Fenton, 1937, Geol. Soc. America Bull., v. 48, no. 12, p.

1886-1887.

Scherrer formation 

Permian: Arizona.

James Gilluly, J. R. Cooper, and J. S. Williams, 1954, U. S. Geol. Survey Prof. Paper 

266, p. 27-29.

Schieffelin granodiorite

Upper Cretaceous or Tertiary: Arizona.

B. S. Butler, E. D. Wilson, and C. A. Rasor, 1938, Aria. Bur. Mines Bull. 148, Geol. 

Ser. 10, p. 25-26, pi. 3.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 329

School Canyon granite

Jurassic(?): California.

J. C. Crowell, 1952, Calif. Dept. Nat. Res., Div. Minei Special Bept. 24, p. 8.

Schoolhouse sand

Middle Permian: Colorado.

W. O. Thompson, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 1, p. 72.

School Mine ledge beds (in Rich Fountain formation) 

Lower Ordovician: Missouri.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 18-19.

Schrader Bluff formation

Upper Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 164-166.

Schuler formation (of Cotton Valley group)

Upper Jurassic: Subsurface in Arkansas, Louisiana, and Texas.

H. K. Shearer, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 6, p. 724.

Schulz member (of Williams formation)

See Schulz Ranch sandstone member (of Williams formation).

Schulz Ranch sandstone member (of Williams formation) 

Upper Cretaceous: California.

W. P. Popenoe, 1937, Jour. Paleontology, v. 11, no. 5, p. 380.

W. P. Woodring and W. P. Popenoe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Chart 12.

Scio beds

Oligocene, upper, to Miocene, lower: Oregon.

B. I. Sanborn, 1947, Oreg. State Coll. Studies in Geology Mon. 4, p. 1-2, 11-12.

Scituate granite gneiss

Devonian (?) or older: Rhode Island.

A. W. Quinn, 1951, Bedrock geology of the North Scituate quadrangle, Rhode Island: 

U. S. Geol. Survey Geol. Quadrangle Map [GQ 13].

Scotch Village formation

Mississippian or Pennsylvanian: Nova Scotia, Canada.

D. G. Crosby, 1952, Canada Geol. Survey Paper (Prelim. Map) 52-1&

Scotia Bluffs sandstone

Pliocene, upper: California.

B. A. Ogle, 1953, Calif. Dept. Nat. Res., Div. Mines Bull. 164, p. 13 (fig. 3), 33-35, 

pi. 1.

Scotstown granite

Devonian: Quebec, Canada.

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines Geol. Rept 20, v. 2, p. 452, 

462.

Scott Canyon formation

Mississippian (?): Nevada.

R. J. Roberts, 1951, Geology of the Antler Peak quadrangle, Nevada: U. S. Geol. 

Survey Geol. Quadrangle Map [GQ 10].
330 GEOLOGIC NAMES OF NORTH AMERICA

Scottville cyclothem (including Scottville limestone) 

Pennsylvanian: Illinois.

J. N. Payne, 1942, 111. State Geol. Survey Circ. 88, p. 4. 

J. E. Ball, 1952, 111. State Geol. Survey Bull. 77, p. 31-32.

Scoudouc formation

Pennsylvanian: New Brunswick, Nova Scotia, and Prince Edward Island, 

Canada.

J. F. Caley and others, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2, p. 478. 

W. C. Gussow, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 7, p. 

1756-1757.

Seabee formation

Upper Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 166.

Seacliffs sandstone

Mississippian: Newfoundland, Canada.

D. M. Baird, 1951, Canadian Inst. Mining and Metallurgy Trans., v. 54, p. 86.

Seaforth porphyry

Precambrian (Archean) : Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Kept. 255, map.

Seal Lake series

Precambrian: Quebec and Newfoundland (Labrador), Canada. 

C. L. Evans, 1952, Geol. Assoc. Canada Proc., v. 5, p. 112,113,116.

Searston beds

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 20.

Seawall metafelsite

Age not stated: Maine.

G. H. Chadwick, 1944, N. T. Acad. Sci. Trans., ser. 2, v. 6, no. 6, p. 176.

Sebrina complex

Triassic(?) : California.

G. A. Schroter, 1938, Eng. and Min. Jour., v. 139, no. 4, p. 43-44.

Second Mountain member (of Pocono formation) 

Lower Mississippian: Pennsylvania. 

Bradford Willard and A. B. Cleaves, 1938, Pa. Geol. Survey, ser. 4, Bull. G 8, p. 18.

Second Value member (of Montoya dolomite) 

Upper Ordovician: New Mexico. 

L. P. Entwistle, 1944, N. Mex. State Bur. Mines Min. Ees. Bull. 19, p. 17, 18.

Seeman group

Ordovician (?) and younger: British Columbia, Canada. 

H. W. Little, 1950, Canada Geol. Survey Paper 50-19, p. 23-24.

Seigas sandstone

Upper Silurian: Maine, and New Brunswick, Canada.

0. O. Nylander, 1940, Geological formations of the St. John Eiver valley, northern 

Maine and New Brunswick : Caribou, Maine, p. 7-8.

Selah tuff member (of Ellensburg formation) 

[Miocene]: Washington. 

J. H. Mackin, 1947, (abs.) Northwest Science, v: 21, no. 1, p. 33.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 331

Selah Butte flow

Miocene and Pliocene: Washington.

A. C. Waters, 1955, Geol. Soc. America Bull., v. 60, no. 6, p. 673, pi. 1.

Selatna glaciation

Pleistocene (Wisconsin) : Alaska.

A. T. Fernald in T. L. PewS and others, 1953, U. S. Geol. Survey Circ. 289, p. 6, 13 

(table 1).

Selby member (of Rockland formation)

Middle Ordovician (Mohawkian) : Ontario, Canada, and New York. 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 252-253.

Selden basalt tongue

Tertiary: New Mexico.

P. E. Kottlowski, 1953, N. Mex. GeoL Soc. Guidebook 4th Field Conf., p. 32 (map), 

33, 146.

Sellers limestone (in Caseyville formation) 

Pennsylvanian: Illinois. 

H. E. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 36, 101.

Semiamu group

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 322, 

p. 48, table.

Semiamu till

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 322, 

p. 10, table.

Sentinel Hill member (of Schrader Bluff formation) 

Upper Cretaceous: Alaska (subsurface and surface).

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 166.

Sentinell limestone

Cambrian (?) : Utah.

V. E. Peterson, 1942, Econ. Geology, v. 37, no. 6, p. 471 (table 1).

Sentinell quartzite

Cambrian (?) : Utah.

V. E. Peterson, 1942, Econ. Geology, v. 37, no. 6, p. 471 (table 1).

Sepultura formation

Eocene, lower: Baja California, Mexico.

Manuel Santillan and Tomas Barrera, 1930, Inst. Geologfa Mexico Anales, tomo 5, 

p. 14-20.

Sepur beds

Tertiary: Guatemala and British Honduras.

Karl Sapper, 1899, Petermanns geog. Mitt. Erganzungsbd. 27, Heft. 127, p. 43, 55, 67.

Serbin sand lentil (in Mount Tabor member of Yegua formation) 

Eocene (Claiborne) : Texas. 

H. B. Stenzel, 1939, Tex. Univ. Bur. Econ. Geology Pub. 3945, pt. 2, p. 859 [1940].

426779 57 22
332 GEOLOGIC NAMES OF NORTH AMERICA

Sermilik group

Precambrian: Southwest Greenland.

E. D. Crommelin, 1937, Meddel. om Gr0nland, bind 113, nr. 1, p. 5-6.

C. E. Wegmann, 1938, Meddel. om Gr0nland, bind 113, nr. 2, p. 16-23.

Seroe di Cueba series

Eocene, upper: Curasao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologic en geohydrologie van het Eiland Curasao: Delft, 

J. Waltman, Jr., p. 25-28, 60.

Seroe Domi beds

Pleistocene: Curasao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologic en geohydrologie van het Eiland Curasao : Delft, 

J. Waltman, Jr., p. 29, strat. table.

Seroe Largo limestone

Pleistocene: Bonaire, Netherlands West Indies.

P. J. Pijpers, 1931, K. Akad. Wetensch. Amsterdam, Sec. Sci. Proc., v. 34, no. 1, 

p. 169-170.

Seroe Montagne limestone

Eocene, upper: Bonaire, Netherlands West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1571, 1581, 

1590.

Seroe Teintje limestone

Upper Cretaceous (lower Senonian): Curasao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologic en geohydrologie van het Eiland Curasao: Delft, 

J. Waltman, Jr., p. 23, 55.

Serpent formation

Eocene, lower: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 38.

Serrano clay bed (in Silverado formation) 

Paleocene: California.

W. P. Woodring and W. P. Popenoe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. 

Chart 12.

Servilleta formation

Pliocene, upper, or Pleistocene, lower: New Mexico.

Arthur Montgomery, 1953, N. Mex. State Bur. Mines Min. Res. Bull. 30, p. 53.

Seven-Mile tuff and sand member (of Tuscan formation) 

[Pliocene]: California. 

E. C. Treasher, 1947, (abs.) Geol. Soc. America Bull., v. 58, no. 12, pt. 2, p. 1257.

Seven Springs formation 

Tertiary: Texas. 

G. K. Bifier, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 4, p. 345-346, pi. 1.

Seventeen-Mile Brook beds

Devonian: Quebec, Canada.

H. W. McGerrigle, 1954, Quebec Dept. Mines Geol. Kept. 62, p. 38-40.

Sevier River formation

Pliocene, upper, or Pleistocene, lower: Utah.

Eugene Callaghan, 1937, (abs.) Washington Acad. Sci. Jour., v. 27, no. 8, p. 359; 

1938, U. S. Geol. Survey Bull. 886-D, p. 100-101.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 333

Sevilleta rhyolite

Precambrian: New Mexico.

J. T. Stark and E3. C. Dapples, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, 

pt. 2, p. 1936 ; 1946, v. 57, no. 12, pt. 1, p. 1134-1135.

Seward formation

Pliocene: Nebraska.

G. E. Condra, B. C. Reed, and B. D. Gordon, 1947, Nebr. Geol. Survey Bull. 15, 

p. 15-16.

Seward grits N

Precambrian: Quebec and Newfoundland (Labrador), Canada.

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72.

J. K. Gustafson and A. E. Moss, 1953, Mining Eng., v. 5, no. 6, p. 595.

Seymour group

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 48, table.

Seymour till

Pleistocene: British Columbia, Canada.

J. B. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 10, 48, table.

Shadow Lake formation

Middle Ordovician (Black River): Ontario, Canada.

V. J. Okulitch, 1939, Royal Canadian Inst. Trans., v. 22, pt 2, p. 321.

Shaftesbury formation

Lower Cretaceous: British Columbia, Canada.

F. H. McLearn and J. F. Henderson, 1944, Canada Geol. Survey Paper 44-2, p. 3.

Shale Brook submember (of Thorburn member of Stellarton series) 

Pennsylvanian: Nova Scotia, Canada. 

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 45 [1941].

Shannondale limestone member (of Benbolt limestone) 

Middle Ordovician: Virginia. 

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 868-871.

Sharon Springs formation

Middle Devonian(?): New York.

Winifred Goldring and R. H. Flower, 1942, Am. Jour. Sci., v. 240, no. 10, p. 677-678, 

679, 689-690, 694.

Shasta lavas

Pliocene: California.

0. P. Jenkins, 1938, Geologic map of California (1:500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Shattuck member (of Queen formation)

Permian (Guadalupian) : New Mexico and Texas.

N. D. Newell and others, 1953, The Permian reef complex of the Guadalupe Mountains 

region, Texas and New Mexico: San Francisco, W. H. Freeman and Co., p. 15, 

44, 45.

Shaunavon formation

Jurassic: Saskatchewan, Canada (subsurface).

J. R. Ower, 1953, Canadian Inst. Mining and Metallurgy Trans., v. 56, p. 397-398. 

R. L. Milner and G. E. Thomas, 1954, Western Canada sedimentary basin: Tulsa, 

Okla., Am. Assoc. Petroleum Geologists, p. 260-262.
334 GEOLOGIC NAMES OF NORTH AMERICA

Shaw Mountain formation

Silurian(?): Vermont.

L. W. Currier and R. H. Jahns, 1941, Geol. Soc. America Bull., v. 52, no. 9, 

p. 1496-1501.

Shaw Point cyclothem

Pennsylvanian: Illinois.

C. L. Cooper, 1946, 111. State Geol. Survey Bull., 70, p. 12 (footnote), 13.

Shea diabase

Precambrian: Arizona. ' 

L. E. Reber, Jr., 1938, Ariz. Bur. Mines Bull. 145, Geol. Ser. 12, p. 58, 61.

Sheba group

Upper Cretaceous or Tertiary: British Columbia, Canada. 

C. E. Cairnes, 1943, Canada Geol. Survey Paper 43-15, p. 8.

Shedroof conglomerate

Precambrian: Washington.

C. F. Park, Jr., and R. S. Cannon, Jr., 1943, U. S. Geol. Survey Prof. Paper 202, 

p. 6, 7, pi. 1.

Sheep Canyon basalt 

Tertiary: Texas.

S. S. Goldich and M. A. Elms, 1946, (abs.) Geol. Soc. America Bull., v. 57, no. 12, 

pt. 2, p. 1197 ; 1949, v. 60, no. 7, p. 1153-1155.

Sheepeaters basalt

Tertiary: Wyoming.

R. E. Wilcox, 1944, Geol. Soc. America Bull., v. 55, no. 9, p. 1053-1054.

Sheffield shale (in McLeansboro formation) 

Pennsylvanian: Illinois. 

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 102.

Shelby cyclothem

Pennsylvanian: Illinois.

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 13.

Shellhammer Hollow formation

Mississippian: Pennsylvania.

Wallace de Witt, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 11, p. 1362.

Shepody formation

Pennsylvanian: New Brunswick, Canada.

G. W. H. Norman, 1941, Canada Geol. Survey Map 647A.

Sherbrooke group

Silurian: Quebec, Canada.

H. C. Cooke, 1948, Canada Geol. Survey Map 911A; 1951, Mem. 257, p. 49-52, 78.

Sherbrooke series

Ordovician: Quebec, Canada.

R. C. Rowe, 1944, Canadian Mining Jour., v. 65, no. 1, p. 4 (map).

Sherridon group

Precambrian: Manitoba, Canada.

J. D. Bateman, 1944, Canada Geol. Survey Paper (Prelim. Map) 44-4.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 335

Sherwood member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 24, figs. 3, 12.

Shingle Hills formation

Lower Cretaceous: Texas.

V. E. Barnes, 1948, Tex. Univ. Bur. Econ. Geology Kept. Inv. 2, p. 5, 7, 8.

Ship Cove limestone

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 18.

Ship Mountain granite 

Jurassic: California.

0. P. Jenkins, 1938, Geologic map of California (1:500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Shippensburg formation

Middle Ordovician: Pennsylvania.

L. C. Craig, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1963-1964.

Shipps Creek shale member (of Wautubbee formation) 

Eocene (Claiborne) : Mississippi. 

E. P. Thomas, 1942, Miss. State Geol. Survey Bull. 48, p. 62-65.

Shipshaw beds

Middle Ordovician: Quebec, Canada.

G. W. Sinclair, 1953, Am. Jour. Sci., v. 251, no. 12, p. 847, 849.

Shoal Arm formation

Middle Ordovician (?): Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 9.

Shoalrocks gneiss

Precambrian: Newfoundland, Canada.

J. O. Puller, 1941, Newfoundland Geol. Survey Bull. 15, p. 14.

Shochary sandstone member (of Martinsburg formation) 

Ordovician (lower Maysville) : Pennsylvania.

Bradford Willard and A. B. Cleaves, 1939, Geol. Soc. America Bull., v. 50, no. 7, 

p. 1183-1184, 1196 (table 5).

Shoemaker formation

Triassic or older: British Columbia, Canada. 

H. S. Bostocfc, 1940, Canada Geol. Survey Map 341A.

Shoemaker gravel

Pleistocene: California.

L. F. Noble, 1954, U. S. Geol. Survey Geol. Quadrangle Map GQ 50.

Shonektaw formation

Lower Mesozoic: British Columbia, Canada.

K. D. Watson and W. H. Matthews, 1944, British Colombia Dept. Mines Bull. 19, 

p. 19-20.

Shongaloo member (of Schuler formation)

Upper Jurassic: Subsurface in Louisiana, Arkansas, and Texas.

F. M. Swain, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 5, p. 600-602.
336 GEOLOGIC' NAMES OF NORTH AMERICA

Shoreham member (of Sherman Fall formation)

Middle Ordovician (Mohawkian) : Vermont and New York, and Ontario,

Canada. 

G. M. Kay, 1937, Geol. Soc. America Bull., v. 48, no. 2, p. 264-267.

Shore Hill soil

Pleistocene: Bermuda Islands.

R. W. Sayles, 1931, Am. Acad. Arts and Sci. Proc., v. 66, no. 11, p. 393.

Short Mountain facies (of Fort Payne formation) 

Lower Mississippian: Tennessee.

H. J. Klepser, 1937, Ohio State Univ. Abs. Doctors' Dissert. 24, p. 182. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper 22, p. 54.

Shorts Kanch andesite 

Tertiary: Arizona. 

W. H. Brown, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 734-735.

Shubuta member (of Yazoo day)

Eocene, upper (Jackson group) : Alabama.

G. B. Murray, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 10, p. 1838, 1839

(footnote). 

I. D. Toulmin, P. B. LaMoreaux, and C. R. Lanphere, 1951, Ala. Geol. Survey Special

Rept. 21, p. 120-122, pi. 3.

Shubuta Hill clay

Eocene (Jackson) : Alabama.

R. H. Smith and others, 1944, in Southeastern Geol. Soc. [Guidebook] 1st Field Trip, 

[Geol. section of] Little Stave Creek, Clarke Co., Alabama.

Shuksan formation

Upper Jurassic: Washington.

C. B. Weaver, 1945, Am. Assoe. Petroleum Geologists Bull., v. 29, no. 10, p. 1391,1392 

(table 3).

Shukson formation

See Shuksan formation.

Shullsburg member (of Quimbys Mill formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 9.

Shumway cyclothem (including Shumway limestone) 

Pennsylvanian: Illinois.

J. M. Weller and W. A. Newton, 1938, Geol. Soc. America Proc., 1937, p. 329. 

J. M. Weller and A. H. Bell in W. A. Newton, 1941, 111. State Geol. Survey Rept Inv. 

76, p. 7.

Shunda member (of Bundle formation) 

Mississippian: Alberta, Canada.

L. M. Clark, 1949, Am. Assoe. Petroleum Geologists Bull., v. 33, no. 4, p. 629. 

F. W. Beales, 1950, Canada Geol. Survey Paper 50-27, p. 4, table 1.

Shurtz sandstone tongue (of Navajo sandstone) 

Jurassic and Jurassic (?) : Utah.

Paul Averitt and others, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 12, 

p. 2520.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1036-1955 337

Sidewinder volcanic series 

Triassic(?): California. 

O. E. Bowea, Jr., in L. A. Wright and others, 1953, Calif. Jour. Mines and Geology,

v. 49, nos. 1-2, pi. 2. 

O. E. Bowen, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 165, p. 42-53.

Sidewinder Valley metavolcanics 

Upper Paleozoic: California. 

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 100-102.

Sidney gravel

Pliocene: Nebraska, Colorado, and Kansas.

A. L. Lugn, 1938, Am. Jour. Sci., 5th ser., v. 36, no. 213, p. 224, 227; 1939, Geol. 

Soc. America Bull., v. 50, no. 8, p. 1261-1263.

Sidney shale member (of Markley formation) 

Eocene, upper: California. 

B. L. Clark and A. S. Campbell, 1942, Geol. Soc. America Special Paper 39, p. 9-10.

Sidney Flat shale member (of Markley formation) 

See Sidney shale member (of Markley formation).

Sierra Madre limestone

Middle Cretaceous: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, p. 276, correlation chart.

Sierra Nevada formation

Oligocene(?): Mexico and Distrito Federal, Mexico.

R. M. Berbeyer, 1953, Congreso Cient. Mexicano Mem., tomo 4, table 6.

Sierrita limestone

Tertiary: Yucatdn, Mexico.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg, Band 

8, Abt. 4a, Heft 29, p. 77, pi. 3.

Sierrite limestone

Lower Ordovician (Canadian): New Mexico.

V. C. Kelley, 1951, Am. Assoc. Petroleum Geologists Bull., v. 85, no. 10, p. 2201-2202. 

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 42-45, 

fig. 4.

Sifton formation

Upper Cretaceous (?): British Columbia, Canada.

M. S. Hedley and S. S. Holland, 1941, British Columbia Dept Mines Bull. 12, p. 42-43.

Signal Hill beds

Pleistocene, lower: California.

J. B. Baton, 1943, Calif. Dept. Nat. Ees., Div. Mines Bull. 118, pt. 2, p. 204, 205 

[preprint 1941].

Signal Hill soil

Pleistocene: Bermuda Islands.

R. W. Sayles, 1931, Am. Acad. Arts and Sci. Proc., v. 66, no. 11, p. 395-896.

Sikanni formation

Lower Cretaceous: British Columbia, Canada.

C. O. Hage, 1944, Canada Geol. Survey Paper 44-30, p. 11-12.

Siletz River volcanic series 

Eocene, lower: Oregon.

P. D. Suavely, Jr., and B. M. Baldwin, 1948, Am. Assoc. Petroleum Geologists Bull., 

v. 32, no. 5, p. 805-812.
338 GEOLOGIC NAMES OF NORTH AMERICA

Silliman Mount formation

Upper Ordovician: Northwest Territories (Baffin Island), Canada.

W. H. Twenhofel and others, 1954, Geol. Soc. America Bull., v. 65, no. 3, Chart 2, 

column 5d.

Silverado formation

Paleocene: California.

W. P. Woodring and W. P. Popenoe, 1945, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 12.

Silver Coulee beds (of Polecat Bench formation) 

Paleocene: Wyoming.

G. L. Jepsen in W. B. Scott, 1937, A history of land mammals in the Western Hemisphere : New York, Macmillan Co., p. 99; 1940, Am. Philos, Soc. Proc., v. 83, no. 

2, p. 236-237.

Silver Creek glacial substage

Pleistocene (Wisconsin): Colorado.

D. F. Bschman, 1952, (abs.) Geol. Soc. America Bull., v. 63, no. 12, pt. 2, p. 1380; 

1955, Jour. Geology, v. 63, no. 3, p. 205-206.

Silver King porphyry

Cretaceous (?): British Columbia, Canada.

B. Mulligan, 1952, Canada Geol. Surrey Paper 52-13, p. 13.

Silver King quartz monzonite porphyry 

Age not stated: Arizona. 

M. N. Short and others, 1943, Ariz. Bur. Mines Bull. 151, Geol. Ser. 16, p. 42-43.

Silver Lake granite

Precambrian: Ontario, Canada.

W. D. Harding, 1951, Ontario Dept. Mines Ann. Rept., v. 56, pt. 6, p. 30.

Silver Mine granite

Precambrian: Missouri.

H. B. Graves, 1938, Acad. Sci. St. Louis Trans., v. 29, no. 5, p. 119.

Silver Run limestone

Precambrian (?) : Maryland.

A. I. Jonas and G. W. Stose, 1938, Washington Acad. Sci. Jour., v. 28, no. 8, p. 346.

Silver Star granodiorite 

Miocene: Washington. 

W. M. Pelts, 1939, Ohio Jour. Sci., v. 39, no. 6, p. 297, 302-303, 306-307, 315 (fig. 4).

Silverwood cyclothem (including Silverwood limestone) 

Pennsylvanian: Indiana and Illinois. 

J. W. Alexander, 1943, 111. State Acad. Sci. Trans., v. 36, no. 2, p. 142, 143.

Simard beds

Middle Ordovician: Quebec, Canada.

G. W. Sinclair, 1953, Am. Jour. Sci., v. 251, no. 12, p. 843.

Simcoe group

Ordovician: Ontario, Canada (subsurface).

B. A. Liberty, 1955, Geol. Assoc. Canada Proc., v. 7, pt. 1, p. 144.

Simmler formation

Oligocene: California.

T. W. Dibblee, Jr., 1952, in AAPG, SBPM, SEG, Joint Ann. Meeting Guidebook, p. 82.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 339

Simms Ridge shale

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 11-12.

Simpsonian series

Ordovician: Mississippi Valley region.

A. W. Grabau, 1937, Paleozoic formations in the light of the pulsation theory, v. 3, 

Cambrovician pulsation, pt. 2, Appalachian, Palaeocordilleran, Pre-Andean, Himalayan, and Cathaysian geosynclines: Peiping, China, University Press, Natl. Univ. 

Peking, p. 20, 282.

Sims group

Precambrian: Newfoundland (Labrador) and Quebec, Canada.

J. K. Gustafson and A. E. Moss, 1953, Mining Eng., v. 5, no. 6, p. 595 (table 1).

Simson Bay formation

Tertiary, lower: St. Martin, Netherlands and French West Indies. 

G. A. P. Molengraaf, 1931, Leidsche Geol. Meded., Deel 5, p. 736.

Sinnifik strata

Miocene: West Greenland.

A. E3. NordenskiSld, 1872, Geol., Mag., v. 9, p. 459-460.

Sinsinawa member (of Wise Lake formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., figs. 3, 12.

Sinwa group

Jurassic (?) : British Columbia, Canada.

F. A. Kerr, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-30; 1948, Mem. 248, 

p. 20 (table), 34-35, geol. map.

Siparia beds

Pleistocene: Trinidad, British West Indies.

E. H. Cunningham-Craig, 1907, Trinidad Legislative Council Paper no. 60 of 1907,

p. 7, 9. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 563.

Sipe Springs formation

Pennsylvanian (Lampasas): Texas (subsurface).

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 84-85.

Sisar black shale

Eocene, middle: California.

T. L. Bailey, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 11, p. 1920 (fig. 3).

Siscoe granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 133.

Sisters varved clay

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, p. 48, table.

Sites formation

Upper Cretaceous (Chico) : California.

J. M. Kirby, 1942, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 26, no. 5, p. 899; 

1943, v. 27, no. 3, p. 284-285.
340 GEOLOGIC NAMES OP NORTH AMERICA

Sivier formation

Ordovician: Newfoundland, Canada.

G. R. Heyl, 1936, Newfoundland Geol. Survey Bull. 3, p. 7.

Sixmile Canyon formation

Upper Cretaceous: Utah.

B. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 122, 128.

Skaergaard complex

Tertiary: Greenland.

L. R. Wager and W. A. Deer in L. R. Wager, 1937, Geog. Jour., v. 90, no. 5, p. 416.

L. R. Wager and W. A. Deer, 1939, MeddeL om Gr0nland, bind 105, nr. 4, p. 5-355.

Skamania andesite series

Miocene to Pliocene: Washington.

W. M. Felts, 1939, Ohio Jour. Sci., v. 39, no. 6, p. 301-302, 304-306, 315 (fig. 4).

Skeels Corners formation

Middle or Upper Cambrian (late Menevian or early Dresbachian): Vermont. 

B. F. Howell, 1939, (abs.) Geol. Soc. America Bull., v. 50, no. 12, pt. 2, p. 1964.

Skeene member (of Whitehall formation)

See Skene dolomite member (of Whitehall formation).

Skeldal conglomerate

Late Tertiary to early Quaternary: Northeast Greenland.

Brdhart Frankl, 1953, Meddel. om Gr0nland, bind 113, nr. 6, p. 35-37, pi. 1.

Skene dolomite member (of Whitehall formation) 

Upper Cambrian: New York.

R. R. Wheeler, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1938 

1939 ; 1942, Am. Jour. Sci., v. 240, no. 7, p. 522, 523.

Skinner Brook member (of Stellarton series) 

Pennsylvanian: Nova Scotia, Canada. 

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 22-25 [1941].

Skookum formation

Precambrian: Washington.

M. C. Schr.oeder, 1952, Wash. Dept. Conserv. Devel., Div. Mines and Geology Bull. 

40, p. 7, 9,13-17.

Skookumchuck formation

Eocene, upper: Washington.

P. D. Snavely, Jr., and others, 1951, U. S. Geol. Survey Coal Inv. Map C 8, sheet 1.

Skooner Gulch basalt 

Tertiary: California. 

C. B. Weaver, 1943, Calif. Dept Nat. Res., Div. Mines Bull. 118, pt. 3, p. 629-630.

Skukum volcanic rocks

Tertiary: Yukon, Canada.

J. O. Wheeler, 1952, Canada Geol. Survey Paper 52-30, p. 8.

Skunk Ranch conglomerate

Lower Cretaceous (Bisbee group): New Mexico.

S. G. Lasky, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 5, p. 534, fig. 2.

Slagle trachytes

Quaternary: New Mexico.

Helen Stobbe, 1948, (abs.) Geol. Soc. America Bull., v. 59, no. 12, pt 2, p. 1354-1355.

R, F. Colling, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1033-1034, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 341

Slate Creek limestone member (of Wellington formation) 

Permian: Kansas. 

W. A. Ver Wiebe, 1937, Wichita Municipal Univ. Bull., v. 12, no. 5, p. 8-10.

Slate Lake series

Precambrian: Ontario, Canada.

J. D. Bateman, 1940, Jour. Geology, v. 48, no. 6, p. 630.

Slater River formation

Upper Cretaceous: Northwest Territories (Mackenzie), Canada. 

J. S. Stewart, 1944, Canadian Inst. Mining and Metallurgy Trans., v. 47, p. 163; 

1945, Canada Geol. Survey Paper 45-29, p. 7.

Slaughter Creek member (of Pendleton formatioa) 

Eocene, lower (Wilcox) : Louisiana and Texas.

Richard Wasem and L. J. Wilbert, Jr., 1943, Jouir. Paleontology, v. 17, no. 2, p. 186- 

187, fig. 4.

Slaven chert

Middle Devonian: Nevada.

James Gilluly, 1955, in Pacific Petroleum Geologist, v. 9, no. 8, p. 1.

Sligo formation

Lower Cretaceous: Subsurface in Louisiana, Arkansas, and Texas. 

R. W. Imlay, 1940, Ark. Geol. Survey Inf. Circ. 12, p. 30-32.

Slims Valley silt

Recent: Yukon, Canada.

C. S. Denny, 1952, Geol. Soc. America Bull., v. 63, no. 9, p. 920, table 4.

Slippery Creek greenstone 

Paleozoic (?): Virginia.

W. R. Brown, 1951, (aba.) Geol. Soc. America Bull., v. 62, no. 12, pt. 2, p. 1547; 

1953, Ky. Geol. Survey, ser. 9, Special Pub. 1, [p. 9] (fig. 1).

Sliverville sand

Upper Devonian: Pennsylvania.

C. R. Fettke, 1941, Pa. Topog. and Geol. Survey Progress Rept. 125, p. 23-28.

Sloan member (of Marble Falls formation) 

Pennsylvanian (Morrow) : Texas.

F. B. Plummer, 1944, Tex. Univ. Bur. Bcon. Geology Min. Res. Circ. 83, p. 8; 1945, 

Tex. Univ. Pub. 4401, p. 66-67.

Sloko group

Cretaceous or Tertiary: British Columbia, Canada.

J. D. Aitken, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-9.

Sly Gap formation

Devonian: New Mexico.

F. V. Stevenson, 1941, (abs.) Oil and Gas Jour., v. 39, no. 47, p. 65.

Smackover formation

Upper Jurassic: Subsurface in Arkansas, Louisiana, Mississippi, and Texas.

D. H. Bingham, 1937, Am. Assoc. Petroleum Geologists BulL, v. 21, no. S, p. 1068-

1072. 

W. B. Weeks, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 8, p. 964-965.
342 GEOLOGIC NAMES OF NORTH AMERICA

Smarts Mountain granite

Upper Devonian: New Hampshire.

Katherine Fowler-Lunn and Louise Kingsley, 1937, Geol. Soc. America Bull., v. 48,

no. 10, p. 1382. 

C. A. Chapman, 1939, Geol. Soc. America Bull., v. 50, no. 1, p. 143.

Smetana sandstone

Eocene (Claiborne) : Texas.

A. A. L. Mathews, 1950, Tex. Eng. Expt. Sta. Research Kept. 14, p. 1-3, geol. map.

Smith Corner member (of Lockatong formation) 

Triassic (Newark) : Pennsylvania. 

D. B. McLaughlin, 1948, Mich. Acad. Sci. Arts and Letters Papers, v. 32, p. 298, 299.

Smiths Hole conglomerate

Devonian (?) or Carboniferous (?) : Newfoundland, Canada. 

W. H. Twenhofel, 1947, Am. Jour. 'Sci., v. 245, no. 2, p. 92.

Smoky group

Upper Cretaceous: British Columbia, Canada.

F. H. McLearn and J. F. Henderson, 1944, Canada Geol. Surrey Paper 44-2, p. 3.

Snakes Bight shale

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1938, Newfoundland Geol. Survey Bull. 12, p. 11.

Snare group

Precambrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. S. Lord, 1939, Canada Geol. Survey Paper 39-5, p. 10-12.

Sneech Pond schist

Precambrian (?) : Rhode Island and Massachusetts.

Alonzo Quinn, R. G. Ray, and W. L. Seymour in Alonzo Quinn and others, 1948, 

R. I. Port and Indus. Devel. Comm. Geol. Bull. 3, p. 12, geol. map.

Sneed andesite

Tertiary, middle (?) : Arizona.

James Gilluly, 1937, Ariz. Univ. Bull., v. 8, no. 1, p. 45-46.

Snelson granite

Precambrian: Georgia.

D. F. Hewett and G. W. Crickmay, 1937, U. S. Geol. Survey Water-Supply Paper 819, 

p. 26-27.

Snider series

Precambrian (Keewatin) : Ontario, Canada. 

Anonymous, 1937, Canadian Mining Jour., v. 58, no. 11, p. 592.

Snipes conglomerates

Miocene, upper, or Pliocene: Oregon.

R. C. Treasher, 1937, Geol. Soc. Oreg. Country News Letter, v. 3, no. 20, p. 218-219.

Snooks Arm series

Ordovician: Newfoundland, Canada.

A. K. Snelgrove, 1931, Canadian Mining and Metall. Bull. 228, p. 485, 486.

Snow group

Precambrian: Manitoba, Canada.

J. M. Harrison, 1949, Canada Geol. Survey Mem. 250, p. 9-14.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 193 6-1955 343

Snowblind Bay formation

Devonian: Northwest Territories (CornwalUs Island), Canada.

R. Thorsteinsson and Y. O. Fortier, 1954, Canada Geol. Survey Paper 53-24, p. 12-13.

Snowcrest granite 

Eocene: Montana.

Robert Scholten, K. A. Keenmon, and W. O. Kupsch, 1955, Geol. Soc. America Bull., 

v. 66, no. 4, p. 372, pi. 1.

Snowden member (of Harpers formation) 

Lower Cambrian: Virginia. 

R. O. Bloomer and H. J. Werner, 1955, Geol. Soc. America Bull., v. 66, no. 5, p. 696.

Snowshoe formation

Middle Jurassic: Oregon.

R. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 259-263.

Snowshoe formation

Precambrian and/or Cambrian: British Columbia, Canada. 

S. S. Holland, 1954, British Columbia Dept. Mines Bull. 34, p. 22-23.

Snows Pond formation

Precambrian (Upper Proterozoic) : Newfoundland, Canada. 

R. D. Hutchinson, 1954, Canada Geol. Survey Mem. 275, p. 18-20.

Snowy Range formation

Upper Cambrian: Montana.

Erling Dorf and Christina Lochman, 1938, (ate!.) Geol. Soc. America Proc. 1937, 

p. 275-276.

Snyder member (of Benner limestone)

Middle Ordovician (Mohawkian): Pennsylvania.

G. M. Kay, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt 2, p. 1969.

Soap Creek bentonite bed (in Frontier formation) 

Upper Cretaceous: Montana and Wyoming.

P. W. Richards and C. P. Rogers, Jr., 1951, U. S. Geol. Survey Oil and Gas Inv. Map 

OM 111, sheet 2.

Soda Lake formation

Miocene, lower: California.

T. W. Dibblee, Jr., 1952, in AAPG, SEPM, SEG, Joint Ann. Meeting Guidebook, p. 82.

Soebi Blanco conglomerate

[Cretaceous and/or Tertiary]: Bonaire, Netherlands West Indies. 

P. J. Pijpers, 1931, Leidsche Geol. Meded., Deel 5, p, 707.

Sokoman formation

Precambrian (Proterozoic) : Quebec and Newfoundland (Labrador), Canada.

H. R. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52^-20, p. 10-11.

Soldado formation

Eocene, upper: Trinidad, British West Indies!.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Port Worth, Tex., J. P. 

MacGowan, p. 225-233.

Soldado formation

[Paleocene] (Midway): Trinidad, British Wost Indies. 

C. J. Maury, 1925, Science, new ser., v. 61, no. 1567, p. 43.
344 GEOLOGIC NAMES OF NORTH AMERICA

Soldiers limestone member {of Big Saline formation) 

See Soldiers Hole member (of Big Saline formation).

Soldiers Hole member (of Big Saline formation) 

Lower Pennsylvanian: Texas. 

P. B. Plummet, 1947, Jour. Geology, v. 55, no. 3, pt. 2, p. 197,198.

Solis limestone

Upper Cretaceous: Tamaulipas, Mexico. 

Emil BOse, 1927, Tex. Univ. Bull. 2748, p. 70-71.

Solitude limestone

Precambrian (Kwaguntan): Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107,113.

Solomon formation

Upper Cretaceous: Kansas.

B. C. Moore and K. K. Landes, 1937, Geologic map of Kansas [1:500,000] : Kans. 

State Geol. Survey.

Solomon sandstone member (of Brazeau formation) 

Upper Cretaceous: Alberta, Canada. 

A. H. Lang, 1944, Canada Geol. Survey Paper 44-1, p. 6-7.

Soma gabbro

Precambrian (Archean): Quebec, Canada.

W. W. Weber, 1951, Quebec Dept. Mines Prelim. Kept. 255, p. 12.

Sombrerito formation

Oligocene, lower to middle: Dominican Republic.

W. M. Small, 1948, Seismol, Soc. America Bull., v. 38, no. 1, p. 26.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 21.

Somerset eolianite

Pleistocene: Bermuda Islands.

B. W. Sayles, 1931, Am. Acad. Arts and Sci. Proc., v. 66, no. 11, p. 396.

Somerset limestone member (of White Limestone formation) 

Eocene, upper: Jamaica, British West Indies.

V. A. Zans, H. R. Versey, and J. B. E. Williams in V. A. Zans, 1935, Jamaica Geol. 

Survey Dept Ann. Bept. 1953-54, p. 4.

Sonneau Brook member (of Gaspe sandstone) 

Devonian: Quebec, Canada. 

E. M. Kindle, 1938, Bull. Am. Paleontology, v. 24, no. 82, p. 66 (32).

Sonoita group

Upper Cretaceous: Arizona.

A. A. Stoyanow, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 297 (table) ; 

1949, Geol. Soc. America Mem. 38, p. 59.

Sonoma Range formation

Ordovician(?): Nevada.

H. G. Ferguson, S. W. Muller, and R. J. Roberts, 1951, Geology of the Winnemucca 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 11].

Sonson limestone

Pleistocene: Mariana Islands (Tinian).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in 

library of U. S. Geol. Survey) ; 1952, Coral reefs in the South Seas: Japan Hydrog. 

Office Bull., v. 11, p. 57, table 4 [English translation in library of U. S. Geol. Survey, 

p. 68].
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 345

Sops Island member (of Natlins Cove formation) 

Silurian: Newfoundland, Canada. 

G. B. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 12.

Soquel member (of Puente formation) 

Miocene, upper: California. 

J. E. Schoellhamer and others, 1954, U. S. Geol. Survey Oil and Gas Inv. Map OM 154.

Sorento cyclothem

Pennsylvanian: Illinois.

H. R. Wanless, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, DO. 9, p. 1764 

(table 2).

Sosa Hill basalt

Miocene, lower: Panama Canal Zone.

S. M. Jones, 1950, Geol. Soc. America Bull., v. 61, no. 9, p. 898 (correlation table).

Sosan formation

Precambrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 37TA.

Sound Island formation

Middle (?) Cambrian: Newfoundland, Canada.

B. R. Rose, 1948, Newfoundland Geol. Survey Bull. 32, pt. 2, p. 41, 44.

Souris River formation

Devonian: Subsurface in North Dakota, and: Saskatchewan and Manitoba,

Canada. 

W. M. Laird, 1953, Interstate Oil Compact Quart. Bull., v. 12, no. 2, p. 74.

Southampton eolianite

Pleistocene: Bermuda Islands.

R. W. Sayles, 1931, Am. Acad. Arts and Sci. Froc., v. 66, no. 11, p. 396.

South Brook biotite-quartz-monzonite

Devonian (?): Newfoundland, Canada.

H. J. MacLean, 1947, Newfoundland Geol. Survey Bull. 22, p. 8.

South Canyon Creek dolomite member (of Maroon formation) 

Permian: Colorado.

N. W. Bass and S. A. Northrop, 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, 

no. 7, p. 1540-1551.

Southern Arm limestone

Lower Ordovician (Canadian): Newfoundland, Canada. 

J. R. Cooper, 1937, Newfoundland Geol. Survey Bull. 9, p. 6-7.

Southesk formation

Devonian: Alberta, Canada.

D. J. McLaren, 1955, Canada Geol. Survey Bull. 35, p. 19-21.

South Flat formation

Upper Cretaceous (Montanan): Utah.

R. B. Hunt, 1954, Am. Assoc. Petroleum Geologists Bull., v. 88, no. 1, p. 118-128.

South Mountain granite

Age not stated: Nova Scotia, Canada.

R. F. Flint, 1951, Geol. Soc. America Bull., v. 62, no. 1, p. 30.
346 GEOLOGIC NAMES OF NORTH AMERICA

South Platte formation

Lower Cretaceous: Colorado.

K. M. Waag6, 1955, U. S. Geol. Survey Prof. Paper 274-B, p. 27-28, 42.

South Range member (of Virginia formation) 

Precambrian (Animikie): Minnesota. 

F. F. Grout and J. F. Wolff, 1955, Minn. Geol. Survey Bull. 36, p. 3, 4, 7, 56, pi. 6.

South Tyler formation

Cretaceous (Comanche): Texas (subsurface).

R. T. Hazzard, B. W. Blanpied, and W. C. Spooner, [1947], Shreveport Geol. Soc. 1945 

Ref. Kept, v. 2, p. 475, 476, 477.

South Wales member (of Perrysburg formation) 

Upper Devonian: New York.

J. F. Pepper and Wallace de Witt, Jr., 1951, U. S. Geol. Survey Oil and Gas Inv. 

Chart OC 45.

South Wells limestone member (of Cherry Canyon formation) 

Permian: Texas and New Mexico. 

P. B. King in A. K. Miller and W. M. Furnish, 1940, Geol. Soc. America Special Paper

26, p. 9. 

P. B. King. 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 4, p. 580, pi. 2.

Soyatal formation

Upper Cretaceous: Queretaro, Mexico.

B. W. Wilson, J. P. Hern&ndez M., and E. Meave T., 1955, Soc. Geol. Mexicana Bol., 

tomo 18, no. 1, p. 3, fig. 2.

Spadra felsophyre

Miocene, middle, or older: California.

J. S. Shelton, 1955, Geol. Soc. America Bull., v. 66, no. 1, p. 55-56, pi. 1.

Sparks schist

Precambrian: Georgia.

D. F. Hewett and G. W. Crickmay, 1937, U. S. Geol. Survey Water-Supply Paper 

819, p. 27.

Spar Mountain sandstone (in Fredonia member of Ste. Genevieve formation) 

Mississippian: Illinois. 

F. B. Tipple, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1658-1659.

Spaulding quartz diorite

Upper Devonian (?) (New Hampshire plutonic series) : New Hampshire. 

Katherine Fowler-Billings, 1949, Geol. Soc. America Bull., v. 60, no. 8, p. 1250, 

1266-1268.

Spearing group

Jurassic or Cretaceous: British Columbia, Canada.

H. M. A. Eice, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-5.

Spear Point formation

Mississippian: Newfoundland, Canada.

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 13-14.

Spears member (of Da til formation) 

(?) Miocene, upper: New Mexico.

W. H. Tonking, 1954, Dissert. Abs., v. 14, no. 2, p. 340; [1954?], Geologic map and 

sections of the Puertecito quadrangle, New Mexico (1:48,000) : N. Mex. Bur. Mines 

MIn. Res. [preprint?] Bull. 41, pi. 1.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 347

Specimen Mountain volcanics 

Age not stated: Colorado. 

E. E. Wahlstrom, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1951.

Speeds limestone member (of SeUersburg limestone) 

Middle Devonian: Indiana. 

D. G. Sutton and A. H. Sutton, 1937, Jour. Geology, v. 45, no. 3, p. 331.

Speedwell member (of Eramosa formation)

Middle Silurian (Niagaran): Ontario, Canada.

E. W. Shaw, 1937, Royal Canadian Inst. Trans., v. 21, pt. 2, p. 339.

Speers Ferry formation

Middle Ordovician (Chazyan): Tennessee.

E. O. Ulrich, 1939, Kans. Geol. Soc. Guidebook 13th Ann. Field Conf., p. 106.

B. N. Cooper, 1945, Jour. Geology, v. 53, no. 4, p. 265.

Spencer formation

Eocene, upper: Oregon.

C. W. Merriam and F. B. Turner, 1937, Calif. Univ. Pubs., Dept. Geol. Sci. Bull.,

v. 24, p. 98 (table 1). 

F. E. Turner, 1938, Geol. Soc. America Special Paper 10, p. 23-24.

Spencer Canyon member (of Muav formation) 

Lower and/or Middle Cambrian: Arizona. 

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 94-95.

Spencer Hill volcanics

Mississippian (?) : Rhode Island.

A. W. Quinn, 1952, Bedrock geology of the East Greenwich quadrangle, Rhode Island: 

U. S. Geol. Survey Geol. Quadrangle Map [GQ 17].

Spence River shale

Upper Devonian: Subsurface in Northwest Territories (Mackenzie), Alberta,

and British Columbia, Canada. 

C. W. Hunt, 1954, Am. Assoc. Petroleum Geologisits Bull., v. 38, no. 11, p. 2300-2301.

Spiller sand member (of Crockett formation) 

Eocene, middle (Claiborne) : Texas. 

H. B. Stenzel, 1938, Tex. Univ. Bur. Econ. Geol. Pub. 3818, p. 20, 125, 149-150 [1939].

Spiral Creek formation

Lower Cambrian (?): Northeast Greenland.

Christian Poulsen, 1930, Meddel. om Gr0nland, bind 74, nr. 12, p. 307.

Spirit River formation

Lower Cretaceous: Alberta, Canada (subsurface).

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 8-9.

Split Mountain formation

Miocene, lower and middle: California.

L. A. Tarbet and W. H. Holman, 1944, (abs.) Am. Assoc. Petroleum Geologists Bull., 

v. 28, no. 12, p. 1781, 1782.

Spoon Cove formation

Precambrian (Proterozoic) or Lower CambrLan: Newfoundland, Canada. 

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

Spotted Ridge formation

Pennsylvanian: Oregon.

C. W. Merriam, 1942, Jour. Paleontology, v. 16, no. 3, p. 372. 

426779 57- 23
348 GEOLOGIC NAMES OF NORTH AMERICA

Spottedtail member (of Sheep Creek formation) 

Miocene (Hemingford): Nebraska. 

M. K. Elias, 1942, Geol. Soc. America Special Paper 41, p. 128-129, pi. 17.

Spout Spring oolite (in Bangor limestone) 

Mississippian: Alabama. 

W. B. Jones, 1939, Econ. Geology, v. 34, no. 5, p. 575, 578.

Spraberry sandstone

Permian (Leonard) : Texas (subsurface).

T. S. Jones and others, 1949, W. Tex. Geol. Soc. Strat. Problems Comm., Sept. 1949. 

Lamar McLennan, Jr., and H. W. Bradley, 1951, Am. Assoc. Petroleum Geologists Ball., 

v. 35, no. 4, p. 899-903, 904-908.

Sprague glacial substage

Pleistocene (Wisconsin) : Colorado, Wyoming, and New Mexico.

L. L. Bay, 1939, (abs.) Geol. Soc. America Bull., v. 50, no. 12, pt. 2, p. 2007; 1940, 

v. 51, no. 12, pt. 1, p. 1862-1863.

Spray formation

Upper Cretaceous: British Columbia, Canada. 

J. L. Usher, 1952, Canada Geol. Survey Bull. 21, p. 29.

Springbrook formation

Eocene: British Columbia, Canada.

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Spring Brook shale member (of Ludlowville formation) 

Middle Devonian: New York. 

B. Q. Sutton, 1951, Rochester Acad. Sci. Proc., v. 9, no. 5-6, p. 365, 366.

Spring Creek deposits 

Pleistocene: Texas. 

G. L. Evans and G. E. Meade, 1945, Texas Univ. Bur. Econ. Geology Pub. 4401, p. 495.

Springdale formation

Silurian (?) : Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 11-12.

Springdale sandstone member (of Chinle formation in Utah; of Moenave 

formation in Arizona)

Upper Triassic(?) : Utah and Arizona.

H. E. Gregory and N. C. Williams, 1947, Geol. Soc. America Bull., v. 58, no. 3, p. 228.

Springfield granodiorite

Age unknown: Pennsylvania.

A. W. Postel, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, 2004-2005; 

1941, Acad. Nat. Sci. Philadelphia Proc., v. 92, p. 125-133.

Springfield Center member (of Onondaga formation) 

Middle Devonian; New York. 

B. E. Stevenson, 1949, N. Y. State Sci. Service Kept. Inv. 3, p. 6-7.

Springvale formation

Miocene, upper: Trinidad, British West Indies.

B. J. L. Guppy, 1912, Agr. Soc. Trinidad and Tobago Proc., v. 12, pts. 1-2, p. 29-32,

cross section facing p. 30; Beprint, 1921, Bull. Am. Paleontology, v. 8, no. 35,

p. 321 (173)-324 (176), pi. 14 (10). 

H. G. Kugler, 1936, Am. Assoc. Petroleum Geologists Bull., v. 20, no. 4, p. 1447, 1451

(chart).
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 349

Springvalean stage

Miocene, upper: Trinidad, British West Indies. 

C. J. Maury, 1931, Science, v. 73, no. 1880, p. 43.

Spruce Pine alaskite

Age not stated: North Carolina.

C. E. Hunter and P. W. Mattocks, 1936, TVA Div. Geology Bull. 4, p. lft-11. 

Spyglass Cove formation

Precambrian (Proterozoic) or Lower Cambrian: Newfoundland, Canada.

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

Squall Lake granite

Precambrian: Manitoba, Canada.

J. M. Harrison, 1949, Canada Geol. Survey Mem. 250, p. 19.

Square Peak volcanic series 

Tertiary: Texas. 

R. M. Hufflngton, 1943, Geol. Soc. America Bull., v. 54, no. 7, p. 992, 1027, 1038.

Squaw Creek diatomite member (of Yakhna basalt) 

[Miocene]: Washington. 

J. H. Mackin, 1947 (abs.) Northwest Science, v. 21, no. 1, p. 33.

Stack Rock limestone

Cretaceous (Cenomanian) : Trinidad, British West Indies.

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 524, chart facing p. 572.

Stadacoma tuffs

Precambrian: Quebec, Canada.

W. N. Ingbam and S. H. Ross, 1947, Quebec Dept. Mines Prelim. Rept. 205, pt. 1, p. 15.

Staendebach member (of Tanyard formation) 

Lower Ordovician: Texas.

V. E. Barnes and P. E. Cloud, Jr., 1945, Tex. Unip. Bur. Econ. Geology Min. Res. Circ. 

34, p. 19-27.

Staff House flow (in Yellowknife group)

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. E. G. Brown and A. S. Dadson, 1953, Canadian Inst. Mining and Metallurgy Trans., 

v. 56, p. 84.

Stanaker formation

Upper Triassic: Utah.

H. D. Thomas and M. L. Krueger, 1946, Am. Assoc. Petroleum Geologists Bull., T. 30, 

no. 8, pt. 1, p. 1271-1274.

Standing Pond volcanics

Middle Ordovician (?) : Vermont and New Hampshire. 

C. G. Doll [1945?], Vt. State Geologist 24th Rept., p. 17.

Stanton facies (of New Providence formation) 

Lower Mississippian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America Special Paper, p. 121-125.

Stapp conglomerate member (of Union Valley formation) 

Perinsylvanian (Morrow) : Oklahoma. 

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 893-895.

Starboard gneiss

Precambrian: Newfoundland, Canada.

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 12-13.
350 GEOLOGIC NAMES OF NORTH AMERICA

Stark formation

Precambrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 377A.

Stark quartz syenitic complex 

Precambrian: New York. 

A. F. Buddington, 1948, Geol. Soc. America Mem. 28, p. 24, 25-28.

Starkey tongue (of Sherburne formation) 

Upper Devonian: New York. 

W. L. Grossman, 1944, Geol. Soc. America Bull., v. 55, no. 1, p. 66-67.

Star Mountain rhyolite 

Tertiary: Texas. 

G. K. Eifler, Jr., 1951, Geol. Soc. America Bull., v. 62, no. 4, p. 345, pi. 1.

State Bridge siltstone member (of Maroon formation) 

Permian (?) : Colorado.

C. F. Bassett, 1939, Geol. Soc. American Bull., v. 50, no. 12, pt. 1, p. 1864. 

H. F. Donner, 1949, Geol. Soc. America Bull., v. 60, no. 8, p. 1228-1229.

State Farm gneiss

Precambrian: Virginia.

C. B. Brown, 1937, Va. Geol. Survey Bull. 48, p. 13-14.

Stearns magma series

Precambrian (middle Keweenawan) : Minnesota.

M. S. Woyski, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1002, 1005, pi. 1.

Steels Knob chert facies (of Muldraugh formation) 

Lower Mississlppian: Kentucky. 

P. B. Stockdale, 1939, Geol. Soc. America .Special Paper 22, p. 210-211.

Steen River formation

Middle Devonian: Subsurface in Alberta, British Columbia, and Northwest

Territories (Mackenzie), Canada. 

C. W. Hunt, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 11, p. 2293-2297.

Steep Gully member (of Foley formation) 

Pliocene: Louisiana (subsurface).

P. H. Jones in P. H. Jones, A. N. Turcan, Jr., and H. E. Skibitzke, 1954, La. Dept. 

Conserv. Geol. Bull. 30, p. 59-60.

Sten0rkenen phyllites

Precambrian (Greenlandian) : North Greeland.

Erdhart Frankl, 1955, Meddel. om Gr0nland, bind 103, nr. 7, p. 13,16, 32.

Stetson Brook limestone

Cambro-Ordovician(?) : Maine.

L. W. Fisher, 1936, Am. Mineralogist, v. 21, no. 5, p. 323.

Stettler member (of Wabamun formation)

Upper Devonian: Alberta, Canada (subsurface).

J. S. Wonfor and J. M. Andrichuck, 1953, Alberta Soc. Petroleum Geologists News 

Bull., v. 1, no. 9, p. 3, 5.

Steuben limestone member (of Cobourg formation) 

Middle Ordovician (Mohawkian) : New York. 

G. M. Kay, 1943, Am. Jour. Sci., v. 241, no. 10, p. 598, 601-602.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 351

Stewart Brook formation

Ordovician: Nova Scotia, Canada.

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 6-7 [1941].

Stewart Valley limestone

Mississippian: California.

J. C. Hazzard, 1937, Calif. Jour. Mines and Geology, v. 33, no. 4, p. 275 (tig. 3a), 

332-334.

Stice cyclothem

Pennsylvanian (lower Desmoinesian) : Kansas.

R. C. Moore, 1949, Kans. State Geol. Survey Bull. 83, p. 43, 45.

Stikine lavas

Quaternary: British Columbia, Canada.

F. A. Kerr, 1948, Canada Geol. Survey Mem. 246, p. 39.

Stillaquamish sand member (of Vaslion drift) 

Pleistocene: Washington. 

R. C. Newcornb, 1952, U. S. Geol. Survey Water-iSapply Paper 1135, p. 27, pi. 1.

Stillman member (of Grand Detour formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., fig. 3.

Stillwater glacial stage

Pleistocene (Illinoian) : Colorado.

R. L. Ives, 1937, (abs.) Colo. Univ. Studies, v. 25, no. 1, p. 75; 1938, Geol. Soc. 

America Bull., v. 49, no. 7, p. 1056.

Stillwater Creek member (of Cowlitz formation) 

Eocene, upper: Washington. 

D. A. Henriksen, 1954, Dissert Abs., v. 14, no. 12, p. 2316.

Stobie series

Precambrian (pre-Huronian) : Ontario, Canada.

H. C. Cooke, 1940, Royal Soc. Canada Trans., sec. 4, v. 35, p. 8.

Stock flow

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. F. Henderson and I. C. Brown, 1950, Canadian Inst. Mining and Metallurgy Trans., 

v. 53, p. 418.

Stockade Beaver shale member (of Sundance formation) 

Upper Jurassic: Wyoming and South Dakota. 

R. W. Imlay, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 2, p. 251-255.

Stoddard member (of Oneota formation) 

Lower Ordovician: Wisconsin. 

G. O. Raasch, 1952, 111. Acad. Sci. Trans., v. 45, p. 90-91, 94.

Stoddard Canyon quartz monzonite 

Age unknown: California. 

K. J. Hsu, 1955, Calif. Univ. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 301-302, map 1.

Stoddart formation

Upper Paleozoic: British Columbia, Canada (subsurface).

A. T. C. Rutgers, 1955, (abs.) Am. Assoc. Petroleum Geologists and Alberta Soc.

Petroleum Geologists, Program Western Canada Regional Meeting and 5th Ann.

Field Trip, p. 21.
352 GEOLOGIC NAMES OF NORTH AMERICA

Stoke granite

Pre-Ordovician(?) : Quebec, Canada.

G. V. Douglas, 1941, Quebec Dept. Mines Geol. Eept. 8, p. 17-18.

Stone Coal Bluff lignite (in Slaughter Creek member of Pendleton formation) 

Eocene, lower (Wilcox) : Louisiana and Texas.

Richard Wasem and L. J. Wilbert, Jr., 1943, Jour. Paleontology, v. 17, no. 2, p. 187, 

fig. 4.

Stonehengian division

Lower Ordovician (Ozarkian) : Eastern United States.

A. W. Grabau, 1937, Paleozoic formations in the light of the pulsation theory, v. 3, 

Cambrovician pulsation, pt. 2, Appalachian, Palaeocordilleran, Pre-Andean, Himalayan and Cathaysian geosynclines: Peiping, China, University Press, Natl. Univ. 

Peking, p. 10,13, 15, 282.

Stone Mill member (of Ludlowville formation) 

Middle Devonian: New York. 

G. A. Cooper and A. S. Warthin, 1941, Washington Acad. Sci. Jour., v. 81, no. 6, p. 259.

Stone Mountain granite 

Permian (?): Georgia.

T. L. Watson, 1902, Ga. Geol. Survey Bull. 9-A, p. 114-119.

L. A. Herrmann, 1954, Ga. Geol. Survey Bull. 61, p. 29-32, 55-61, 75, 79.

Stoneville member (of Fox Hills sandstone) 

Cretaceous: South Dakota. 

W. V. Searight, 1934, S. Dak. State Geol. Survey Eept. Inv. 22, p. 8-11.

Stoneville Flats limestone (in Belle Fourche shale) 

Upper Cretaceous : Montana and Wyoming.

M. N. Bramlette and W. W. Rubey in R. C. Moore, 1949, Geol. Soc. America Mem. 39, 

p. 27 (fig. 18).

Stony Clove sandstone member (of Katsberg red beds) 

Upper Devonian: New York.

G. H. Chadwick, 1940, N. Y. State Geol. Assoc. 16th Ann. Meeting Field Guide Leaflets, 

p. 2; 1944, N. Y. State Mus. Bull. 336, p. 130-135 [1946].

Stony Creek basalt

Pliocene: California.

O. P. Jenkins, 1938, Geologic map of California (1: 500,000) : Calif. Dept. Nat. Res., 

Div. Mines, sheet 4.

Stony Creek formation

Middle Ordovician (Mohawkian): Quebec, Canada.

J. A. Dresser and T. C. Denis, 1944, Quebec Dept. Mines Geol. Rept. 20, v. 2, p. 267.

Stony Hollow member (of Marcellus formation) 

Devonian: New York. 

G. A. Cooper, 1941, Washington Acad. Sci. Jour., v. 31, no. 5, p. 179-180.

Stony Mountain diorite

Miocene, upper: Colorado.

McClelland Dings, 1941, Geol. Soc. America Bull., v. 52, no. 5, p. 698, 712-714.

Stony Mountain shale member (of Stony Mountain formation) 

Upper Ordovician (Richmond) : Manitoba, Canada. 

V. J. Okulitch, 1943, Royal Soc. Canada Trans., sec. 4, v. 37, p. 60.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 353

Store Fjord gneisses

Lower Paleozoic (Caledonian?): Northeast Greenland. 

E. H. Kranck, 1935, Meddel. om Grjfaland, bind 915, nr. 7, p. 57-58.

Store Fjord granite

Lower Paleozoic (Caledonian): Northeast Greenland.

E. H. Kranck, 1935, Meddel. om Grjtaland, bind 9iS, nr. 7, p. 13, pi. 3.

Storm Creek formation

Pennsylvanian to Permian: Alberta, Canada.

G. O. Raasch, 1954, Carboniferous section at Highwood Pass with correlations to Banff 

and Mount Head: 'Calgary, Alberta, Canadian Strat. Service Ltd., [Strat. log].

Stormont limestone member (of Pierson Point shale) 

Pennsylvanian (Virgilian) : Kansas. 

H. G. O'Connor, 1953, Kans. State Geol. Survey [Repts.], v. 12, pt. 1, p. 18-19, pi. 1.

Story formation

Pennsylvanian (Missouri series) : New Mesdco.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 65-66.

Stover member (of Benner limestone)

Middle Ordovician (Mohawkian) : Pennsylvania.

G. M. Kay, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1969.

Stowe formation

Ordovician: Vermont.

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 65-66,116.

Strain shale member (of Lykins formation) 

Triassic: Colorado. 

L. W. LeRoy, 1946, Colo. School Mines Quart., v. 41, no. 2, p. 31, 42-44.

Strange formation

Lower Ordovician (Arbuckle): Oklahoma.

C. E. Decker, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1319, table 1.

Strangway granite

Precambrian (post-Keewatin) : Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Rept. 24, p. 11.

Strasburg cyclothem (including Strasburg shale and/or sandstone) 

Pennsylvanian (Allegheny) : Ohio. 

R. E. Lamborn, C. R. Austin, and Downs Schaaf, 1938, Ohio Geol. Survey, ser. 4,

Bull. 39, p. 145-160. 

N. K. Flint, 1951, Ohio Geol. Survey, ser. 4, Bull. 48, p. 47-48.

Strasburg limestone

Middle Ordovician (Chazyan) : Tennessee.

E. O. Ulrich, 1939, Kans. Geol. Soc. Guidebook 13th Ann. Field Conf., p. 106.

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 75.

Strathcona sand and silt

Pleistocene: Alberta, Canada.

P. S. Warren, 1954, Royal Soc. Canada Trans., v. 48,, sec. 4, p. 180.

Strathearn formation

Upper Pennsylvanian and Permian (Missourian-Wolfcampian) : Nevada. 

R. H. Dott, Jr., 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 11, p. 2248- 

2255, fig. 2.
354 GEOLOGIC NAMES OF NORTH AMERICA

Strawberry granite

Precambrian: Newfoundland (Labrador), Canada.

B. H. Kranck, 1939, Newfoundland Geol. Survey Bull. 19, p. 17.

Strawbridge member (of Quimbys Mill formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., flgs. 3, 9.

Stribling formation

Lower or Middle Devonian: Texas.

V. B. Barnes and P. B. Cloud, Jr., 1945, Tex. Univ. Bur. Econ. Geology Min. Res. Circ.

34, p. 31.

V. B. Barnes, P. E. Cloud, Jr., and L. B. Warren, 1946, Tex. Univ. Bur. Econ. Geology 

Pub. 4301, p. 169-174 [1945].

Striped Rock granite

Precambrian: Virginia.

A. J. Stose, 1942, (abs.) Am. Geophys. Union Trans. 23d Ann Meeting, pt. 2, p. 342.

Stronghold granite

Eocene (?) to lower Pliocene (?) : Arizona.

D. J. Cederstrom, 1946, Am. Jour. Sci., v. 244, no. 9, p. 610-611.

Stroudsburgian stage

Middle Devonian: Pennsylvania.

Bradford Willard in Bradford Willard, F. M. Swartz, and A. B. Cleaves, 1939, Pa. 

Geol. Survey, ser. 4, Bull. G 19, p. 131 (footnote).

Stuart glacial stage

Pleistocene: Washington.

B. M. Page, 1939, Jour. Geology, v. 47, no. 8, p. 805-814.

Stuhini group

Upper Triassic: British Columbia, Canada.

F. A. Kerr, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-30; 1948, Mem. 

248, p. 20 (table), 25-27, geol. map.

Stump Arroyo member (of Crooked Creek formation) 

Pleistocene: Kansas. 

C. W. Hibbard, 1949, Mich. Univ. Mus. Paleontology Contr., v. 7, no. 4, p. 71-73.

Sudbury-Bruce series

Precambrian: Ontario, Canada.

H. W. Fairbalrn, 1940 (abs.) Royal Soc. Canada Proc. 3d ser., v. 34, p. 162.

Sugarloaf andesite

Miocene or Pliocene: Washington.

B. M. Page, 1940, Stanford Univ. Abs. Dissert., v. 15, p. 119.

Sugarloaf quartz latite

Cretaceous or Tertiary: Arizona.

H. E. Enlows, 1951, Tulsa Geol. Soc. Digest, v. 19, p. 105-107.

Sugarloaf Mountain quartzite 

Cambrian (?): Maryland. 

A. I. Jonas and G. W. Stose, 1938, Washington Acad. Sci. Jour., v. 28, no. 8, p. 347
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 355

Sugar-lump tuffs

Tertiary, upper: New Mexico.

P. J. Kuellmer and others, 1953, in N. Mex. Geol. Soc. Guidebook 4th Field Conf., p. 42

(map), 47, 50 (map). 

H. L. Jicha, Jr., 1954, N. Mex. State Bur. Mines Min. Res. Bull. 37, p. 39, 42-44.

Suicide grit

Upper Triassic: Utah.

J. S. Williams, 1945, Am. Jour. Sci., v. 243, no. 9, ]?. 474.

Sukkertoppen gneiss or granite

Precambrian: Southwest Greenland.

Hans Ramberg, 1948, Meddel. om Gr0nland, bind 142, nr. 5, p. 6-12.

Sully member (of Pierre formation)

Cretaceous: South Dakota and Nebraska.

W. V. Searight, 1937, S. Dak. State Geol. Survey Rept. Inv. 27, p. 21-34, pi. 3.

Sulphur Mountain member (of Spray River formation) 

Lower Triassic: Alberta, Canada. 

P. S. Warren, 1945, Am. Jour. Sci., v. 243, no. 9, p. 482-483.

Sulphur Springs Mountain andesite

Tertiary (?) : California.

C. B. Weaver, 1949, Geol. Soc. America Mem. 35, p. 110 (table 24), 116-117.

Sulphur Well member (of Cynthiana formation) 

Ordovician: Kentucky.

A. C. McFarlan, 1943, Geology of Kentucky: Lexington, Ky., Ky. Univ., p. 11 (footnote), 20-22.

Sumas shales (in Chuckanut formation) 

[Eocene]: Washington. 

S. L. Glover, 1941, Wash. Dept. Conserv. Devel., Div. Geology Bull. 24, p. 308-311.

Sumay limestone

Pliocene: Mariana Islands (Guam).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v, 11, p. 55, table 4 [English translation in li.brary of U. S. Geol. Surrey, p. 66].

Summers series

Pennsylvanian (post-Chester, pre-Morrow) : West Virginia. 

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 19.

Summit conglomerate

Miocene or Pliocene: Washington.

B. M. Page, 1940, Stanford Univ. Abs. Dissert., v. 15, p. 119.

Summit gabbro

Paleozoic (?) or Mesozoic(?) : California.

W. J. Miller and R. W. Webb, 1940, Calif. Jour. Mines and Geology, v. 36, no. 4, 

p. 353-354, 378 (fig. 31), pi. 2.

Sumner gabbro

Jurassic (?) : British Columbia, Canada.

C. B. Cairnes, 1937, Canada Geol. Survey Mem. 213, p. 28.

Sunblood formation

Ordovician (Black River) : Northwest Territories (Mackenzie), Canada. 

D. R. Kingston, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 11, p. 2413.
356 GEOLOGIC NAMES OF NORTH AMERICA

Sunbury formation

See Sunbury Creek formation.

Sunbury Creek formation

Pennsylvanian: New Brunswick, Canada.

J. E. Muller, 1949, Canada Geol. Survey Paper 49-13 (Prelim. Map 49-13A) ; 1950, 

Mem. 260, p. 8 (table), 20-22, geol. map.

Sunday Mountain volcanic member (of Orfordville formation) 

Middle Ordovician( ?) : New Hampshire and Vermont.

J. B. Hadley and others, 1938, Geologic map and structure sections of the New Hampshire portion of the Mt. Cube quadrangle (1:62,500) : N. H. Highway Dept. 

J. B. Hadley, 1950, Vt. Geol. Survey Bull. 1, p. 15-16.

Sunnybrook volcanics

Jurassic: California.

G. R. Heyl and J. H. Eric, 1948, Calif. Dept. Nat. Res., Div. Mines Bull. 144, pt. 1, 

p. 53, pi. 7.

Sunnyside member (of Blackhawk formation) 

Upper Cretaceous: Utah. 

R. G. Young, 1955, Geol. Soc. America Bull., v. 66, no. 2, p. 183, 185-186.

Sunnyside sand

Pleistocene to Recent: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, table, map.

Sunol series

Upper Cretaceous: California.

O. P. Jenkins, 1938, Geologic map of California (1:500,000) : Calif. Dept. Nat. Res. 

Div. Mines, sheet 4.

Sun River dolomite

Upper Mississippian: Montana.

V. R. Chamberlain, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., p. 

78, 79.

Sunset Point formation

Upper Cambrian (Croixan) : Wisconsin.

G. O. Raasch, 1952, 111. Acad. Sci. Trans., v. 44, p. 150.

Sunshine Ranch member (of Saugus formation) 

Pliocene: California.

J. C. Hazzard in G. B. Oakeshott, 1950, Calif. Jour. Mines and Geology, v. 46, no. 1, 

p. 59-61.

Sunwapta Peak formation

Middle Cambrian: Alberta, Canada.

R. D. Hughes, 1955, Alberta Soc. Petroleum Geologists Guidebook 5th Ann. Field 

Conf., p. 86-90.

Supan tuff and sand member (of Tuscan formation) 

[Pliocene]: California. 

R. C. Treasher, 1947, (abs.) Geol. Soc. America Bull., v. 58, no. 12. pt. 2, p. 1257.

Superian era

Precambrian: Canada.

R. W. Brock, 1936, Geol. Mag., v. 73, no. 861, p. 133-134,140.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 357

Suplee formation

Lower Jurassic (Lias) : Oregon.

R. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 239.

Surgidero formation 

Recent: Cuba.

Jorge Brodermann, 1940, Soc. Cubana Ingenieros Rev., v. 34, no. 2, geol. map and 

cross sections.

Surrey till

Pleistocene: British Columbia, Canada.

J. E. Armstrong and W. C. Brown, 1953, Canada Geol. Survey Water Supply Paper 

322, map, table.

Suspension Bridge formation

Lower Ordovician (Arenigian) : New Brunswick, Canada.

A. O. Hayes and B. P. Howell, 1937, Geol. Soc. America Special Paper 5, p. 83.

Suspension Bridge member (of Lockport dolomite) 

Silurian (Niagaran) : Ontario, Canada. 

E. R. Cumings, 1939, Geologic der Erde, North America, v. 1, p. 596 (flg. 7), 597.

Sussex sandstone member (of Cody shale) 

Upper Cretaceous: Wyoming. 

J. B. Wilson, 1951, Wyo. Geol. Survey Rept. Inv. 3, p. 3-11.

Sustut group

Upper Cretaceous: British Columbia, Canada.

J. E. Armstrong, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-6.

Sutro member (of Alta formation) 

Oligocene(?): Nevada.

V. P. Gianella, 1934, Mining and Metallurgy, v. 15, no. 331, p. 299; 1936, Nev. Univ. 

Bull., v. 30, no. 9, p. 55-58.

Svejstrups injection complex

Lower Paleozoic (Caledonian) : Northeast Greenland.

G. P. Leedal, 1952, Meddel. om Gr0nland, bind 142, nr. 6, p. 30-37, pi. 2.

Swan Lake glaciation

Pleistocene (Wisconsin) : Alaska.

T. N. V. Karlstrom m T. L. Pewfi and others, 19153, U. S. Geol. Survey Circ. 289, p. 4, 

13 (table 1).

Swannanoa formation

Age not stated: Virginia.

W. A. Nelson, 1949, (abs.) Va. Acad. Sci. Proc. 1948-1949, p. 139.

Swanville formation

Middle Devonian: Indiana.

Guy Campbell, 1942, Geol. Soc. America Bull., v. 53, no. 7, p. 1063-1064.

Swauger quartzite

Precambrian (Belt series) : Idaho.

C. P. Ross, 1947, Geol. Soc. America Bull., v. 58, no. 12, pt. 1, p. 1096, 1097-1099, 

pi. 1.

Swayze series

Precambrian: Ontario, Canada.

H. C. Rickaby, 1933, Canadian Inst. Mining and Metallurgy Trans., v. 36, p. 208-209.
358 GEOLOGIC NAMES OF NORTH AMERICA

Sweitzer formation

Pliocene (?) : California.

L. G. Hertlein, 1929, Stanford Univ. Abs. Dissert., v. 4, p. 82.

Swift formation

Upper Jurassic: Montana and Idaho.

W. A. Cobban, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 9, p. 1281-1286.

Swift Current Creek formation

Eocene, upper: Saskatchewan, Canada.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 32. 

L. S. Russell, 1950, Roy. Soc. Canada Trans., 3d ser., v. 44, sec. 4, p. 52-54.

Swift Run formation

Precambrian: Virginia.

G. W. Stose and A. J. Stose, 1944, Am. Jour. Sci., v. 242, no. 8, p. 410.

Swissvale gypsum member (of Minturn formation) 

Pennsylvanian (Desmoinesian) : Colorado. 

K. G. Brill, Jr., 1952, Geol. Soc. America Bull., v. 63, no. 8, p. 821, 833, pi. 1.

Sycamore conglomerate

Miocene and Pliocene: California.

G. J. Bellemin, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 4, p. 652 (fig. 2), 

653, 656-657.

Sycamore Canyon member (of Puente formation) 

Miocene, upper: California. 

M. L. Krueger, 1936, (abs.) Am. Assoc. Petroleum Geologists Bull., v. 20, no. 11, p. 1520.

Sydpr0ven granite

Precambrian: Southwest Greenland.

C. B. Wegmann, 1938, Meddel. om Gr0nland, bind 113, nr. 2, p. 105-112.

Sydvejdal marbles

Upper Precambrian (Greenlandian) : North Greenland.

Erdhart Frankl, 1955, Meddel. om Grpnland, bind 103, nr. 7, p. 13, 16, 32.

Sylva-Maria group

Lower Paleozoic (Caledonian) : Northeast Greenland.

C. B. Wegmann, 1935, Meddel. om Gr0nland, bind 103, nr. 3, p. 31, pi. 1.

Sylvester group

Post-Middle Devonian, pre-Upper Missippian: British Columbia, Canada. 

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Taagef jeldene graywackes

Precambrian (Greenlandian) : North Greenland.

Erdhart Frankl, 1954, Meddel. om Gr0nland, bind 116, nr. 2, p. 37-40, 56, 78, pi. 1.

Tabaquite series

Oligocene: Trinidad, British West Indies.

A. B. Thompson, 1925, Oil field exploration and development, v. 1, Oil field principles : 

New York, D. VanNostrand Co., p. 389.

Tabernacle flow

Pleistocene, upper: Utah.

G. B. Maxey, 1946, Am. Jour. Sci., v. 244, no. 5, p. 328.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 359

Table Mountain formation 

Tertiary: Colorado. 

R. L. Ives, 1938, Geol. Soc. America Bull., r. 49, no. 7, p. 1049.

Tabor member (of Crockett formation) 

Eocene (Claiborne) : Texas.

G. D. Harris, 1941, Tex. Univ. Bur. EJcon. Geology Min. Res. Survey Circ. 33, 

p. 13, 14.

Tachek group

Jurassic or Cretaceous (?) : British Columbia, Canada. 

H. M. A. Rice, 1949, Canada Geol. Survey Map 971A.

Tacoma series

Cambro-Ordovician(?) : Maine.

L. W. Fisher, 1936, Am. Mineralogist, v. 21, no. 5, p. 323.

Tacubaya formation

Pleistocene: Cuenca de Mexico, Mexico.

Kirk Bryan, 1948, Soc. Geol. Mexicana Bol., tomo 13, pi. 1.

Taghanic stage

Middle Devonian (Erian) : New York.

G. A. Cooper and others, 1942, Geol. Soc. America Bull., v. 53, no. 12, pt. 1, p. 1733, 

Chart 4.

Tagpochau limestone

Miocene, lower: Mariana Islands (Saipan).

Risaburo Tayama, 1938, Geomorphology, geology, and coral reefs of Saipan Island:

Tropical Industry Inst., Palau, South Sea Islands, Bull. 1 [English translation in

library of U. S. Geol. Survey, p. 63-68]. 

Josiah Bridge in W. S. Cole and Josiah Bridge, 1953, U. S. Geol. Survey Prof. Paper

253, p. 11-12.

Tahoka clay

Pleistocene (Wisconsin) : Texas and New Mexico.

G. L. Evans and G. E. Meade, 1945, Texas Univ. Bur. Econ. Geology Pub. 4401, 

p. 495-498.

Taholah formation

Pleostocene, lower: Washington.

S. L. Glover, 1940, Northwest Science, v. 14, no. 3, p. 69-71.

Taihamu (Taihanom) limestone

Oligocene tAquitanian] : Mariana Islands (Rota).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. 

Soc. Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in 

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas : Japan Hydrog. 

Office Bull., v. 11, p. 52, table 4 [English translation in library of U. S. Geol. Survey, 

p. 62].

Taihanom limestone 

Taihanomu limestone

See Taihamu limestone.

Tait volcanics

Precambrian (Keewatin) : Ontario, Canada.

G. L. Fletcher and T. N. Irvine, 1954, Ontario Dept. Mines Ann. Rept., v. 63, pt. 5, 

p. 15.

Takla group

Upper Triassic to Upper Jurassic: British Columbia, Canada.

J. E. Armstrong, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-6.
360 GEOLOGIC NAMES OF NORTH AMERICA

Takwahoni group

Lower Jurassic: British Columbia, Canada.

F. A. Kerr, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-30; 1948, Mem. 248, 

p. 20 (table), 32-34, geol. map.

Talamantes volcanic series

Tertiary: Chihuahua, Mexico.

I. F. Wilson and V. S. Rocba, 1948, U. S. Geol. Survey Bull. 954-E, p. 189.

Tallahassee limestone

Eocene, middle: Florida (subsurface).

P. L. Applin and B. R. Applin, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, 

no. 12, p. 1688-1693.

Tallant formation (of Ochelata group) 

Pennsylvanian: Oklahoma. 

M. C. Oakes, 1951, Tulsa Geol. Soc. Digest, v. 19, p. 119, 121.

Tallman fanglomerate

Permian: Nevada.

H. G. Ferguson, S. W. Muller, and R. J. Roberts, 1951, Geology of the Winnemucca 

quadrangle, Nevada : U. S. Geol. Survey Geol. Quadrangle Map [GQ 11].

Talof of o peat-bearing beds

Pliocene: Mariana Islands (Guam).

Risaburo Tayama, 1952, Coral reefs in the South Seas: Japan Hydrog. Office Bull., 

v. 11, p. 55-56, table 4 [English translation in library of U. S. Geol. Survey, p. 66].

Talparo formation

Miocene and Pliocene: Trinidad, British West Indies.

Ernst Lehner, 1935 [France] Office national des combustibles liquides Annales,

10e Ann6e, no. 4, p. 716 (table). 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 558-559, chart facing p. 572.

Tamiahua facies

Middle Cretaceous: Vera Cruz, Mexico.

J. O. Nigra, 1951, Asociaci6n Mexicana GeSlogos Petroleros Bol., v. 3, nos. 3-4, p. 140.

Tamiami formation

Miocene, upper: Florida.

W. C. Mansfield, 1939, Fla. Dept. Conserv. Geol. Bull. 18, p. 8,15.

Tampico shale member (of Piper formation)

Middle Jurassic: Montana (subsurface and surface), and Saskatchewan,

Canada (subsurface). 

J. W. Nordquist, 1955, Billings Geol. Soc. Guidebook 6th Ann. Field Conf., p. 97, 101.

Tamworth granite

Upper Devonian (?) (New Hampshire magma series) : New Hampshire. 

A. P. Smith and others, 1938, Geologic map and structure sections of the Mt. Chocorua 

quadrangle, New Hampshire (1: 62,500) : N. H. Highway Dept.

Tanak volcanics

Quaternary: Alaska (Aleutian Islands).

F. M. Byers, Jr., and others, 1947, U. S. Geol. Survey Alaskan Volcano Inv. Rept. 2, 

pt. 3, p. 28-31.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 361

Tanapag limestone

Pleistocene or Recent: Mariana Islands (Saipan).

Risaburo Tayama, 1939, Correlation of the strata of the South Sea Islands: Geol. Soc.

Japan Jour., v. 46, no. 549, p. 346 (correlation table) [English translation in

library of U. S. Geol. Survey] ; 1952, Coral reefs in the South Seas : Japan Hydrog.

Office Bull., v. 11, p. 58, table 4 [English translation in library of U. S. Geol. Survey,

P. 69],

Tangle Ridge formation

Upper Cambrian: Alberta, Canada.

R. D. Hughes, 1955, Alberta Soc. Petroleum Geologists Guidebook 5th Ann. Field 

Conf., p. 90-92.

Tansill anhydrite or formation (of Whitehorse group or Carlsbad group) 

Permian: New Mexico. 

R. K. DeFord in Addison Young, Max David, and E. A. Wablstrom, 1939, Am. Assoc.

Petroleum Geologists Bull., v. 23, no. 10, p. 1550-1551. 

R. K. DeFord and G. D. Riggs, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25,

no. 9, p. 1713-1728.

Tanyard formation (of Ellenburger group). 

Lower Ordovician: Texas.

V. E. Barnes and P. E. Cloud, Jr., 1945, Tex. Univ. Bur. Econ. Geology Min. Res. 

Circ. 34, p. 1,19-29.

Tapaliza shales

Oligocene, upper, and Miocene, lower: Panama.

Charles Schuchert, 1935, Historical geology of the Antillean-Caribbean region:

New York, John Wiley and Sons, p. 563, 660. 

A. A. Olsson, 1942, 8th Am. Sci. Cong. Proc., v. 4, p. 241.

Tapotchau limestone

See Tagpochau limestone.

Tappan lava flow

Age not stated: Arizona.

H. S. Colton, 1937, Mus. Northern Ariz. Bull. 10, p. 21-22.

Tappocho limestone

See Tagpochau limestone.

Tapukok granodiorite

Precambrian: Manitoba, Canada.

Jorma Kalliokoski, 1952, Canada Geol. Survey Mem. 270, p. 20-22.

Taputapu volcanics

Pliocene (?) : Samoa Islands (Tutuila).

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 155, no. 11, p. 1285, 1305-1306.

Tarahumara formation

Cretaceous (?) : Sonora, Mexico.

I. F. Wilson and V. S. Rocha, 1946, Mexico Com. Dir. Inv. Rec. Mineros Bol. 9, 

p. 30-34.

Taraises formation

Lower Cretaceous: Coahuila, Mexico.

R. W. Imlay, 1936, Geol. Soc. America Bull., v. 47, no. 7, p. 1111-1115.

Tarango formation

Pleistocene (?) : Cuenca de Mexico, Mexico.

Kirk Bryan, 1948, Soc. Geol. Mexicana Bol., tomo 13, p. 11-12.
362 GEOLOGIC NAMES OF NORTH AMERICA

Tarantula formation 

Cretaceous: Texas. 

R. M. Hufflngton, 1947, Harvard Univ. Summaries of Theses, 1943-45, p. 196.

TararS. formation

Oligocene, upper: Cuba.

Jorge Brodermann, 1945, Soc. Cubana Ingerieros Rev., v. 42, no. 1, chart facing 

p. 144.

Target limestone member (of Springer formation) 

Pennsylvanian (Springeran) : Oklahoma. 

A. P. Bennison, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 5, p. 913-914.

Tartar cyclothem

Pennsylvanian: Illinois.

J. R. Ball, 1952, 111. State Geol. Survey Bull. 77, p. 21.

Tascotal formation

Oligocene or younger: Texas.

S. S. Goldich and C. L. Seward, 1948, W. Tex. Geol. Soc. [Guidebook] Fall Field 

Trip, p. 21-22.

Tasek porphyrite

Devonian (?) : Southwest Greenland.

N. V. Ussing, 1911, Meddel. om Gr0nland, hefte 38, p. 213-217.

Tassai Wash group

Tertiary (?) (pre-Pliocene) : Nevada.

C. R. Longwell, 1936, Geol. Soc. America Bull., v. 47, no. 9, p. 1414-1415.

Tatow limestone

Lower Cambrian (Waucobian) : Utah.

Charles Deiss, 1938, Geol. Soc. America Bull., v. 49, no. 7, p. 1143-1144.

Tau trachyte

Pliocene and lower Pleistocene(?): Samoa Islands (Tutuila). 

H. T. Stearns, 1944, Geol. Soc. America Bull., v. 55, no. 11, p. 1285.

Taughannock stage

See Taghanic stage.

Taylor group

Jurassic: British Columbia, Canada.

C. E. Cairnes, 1943, Canada Geol. Survey Paper 43-15, p. 6-7.

Taylor Brook injection gneiss 

Middle Silurian: Maine.

L. W. Fisher, 1938 (abs.) Geol. Soc. America Proc. 1937, p. 81; 1941, Geol. Soc. 

America Bull., v. 52, no. 1, p. 115-117.

Taylors Falls member (of Franconia formation) 

Upper Cambrian (St. Croixian) : Minnesota.

C. R. Stauffer, G. M. Schwartz, and G. A. Thiel, 1938 (abs.) Geol. Soc. America Bull., 

v. 49, no. 12, pt. 2, p. 1902 ; 1939, v. 50, no. 8, p. 1239.

Taylors Pond shale member (of Giles Cove formation) 

Ordovician: Newfoundland. 

G. R. Heyl, 1937, Newfoundland Geol. Survey Bull. 8, p. 10.

Teapa [formation]

Miocene: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 363

Tebo formation

Pennsylvanian (Des Moines) : Missouri.

H. S. McQueen, 1943, Mo. Geol. Survey and Water Res., 2d ser., v. 28, p. 78-83.

Tecocoyunca beds

Middle Jurassic: Guerrero, Mexico.

E. J. Guzman, 1950, AsociaciOn Mexicana GeOlogos Petroleros Bol., v. 2, no. 2, p. 116.

Tecopa shale

Lower and Middle Cambrian: California and Nevada.

H. E. Wheeler, 1948, Nev. Univ. Bull., Geology and Mining Ser., no. 47, p. 27-28.

Tecumseh sandstone (in Silver Reef sandstone member of Chinle formation) 

Upper Triassic: Utah. 

P. D. Proctor, 1953, Utah Geol. Mineralog. Survey Bull. 44, p. 10-11, 28-29.

Tejon Lookout granite

Jurassic (?) : California.

J. C. Crowell, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 24, p. 10.

Telemaque sand (of Springvale formation)

Miocene, upper: Trinidad, British West Indies.

H. H. Suter, 1951, Colonial Geology and Min. Res!., v. 2, no. 3, p. 205 (table 13) [1952].

Temecula arkose

Pleistocene: California.

J. F. Mann, Jr., 1955, Calif. Dept. Nat. Res., Div. Mines Special Rept. 43, p. 9, 10-13.

Temescal Wash quartz latite porphyry

Jurassic (?) : California.

A. O. Woodford, T. G. Moran, and J. S. Shelton, 1946, Am. Assoc. Petroleum Geologists Bull., v. 30, no. 4, p. 528. 

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 36-38.

Temiscamie group

Precambrian: Quebec, Canada.

W. G. Wahl, 1947, Quebec Dept. Mines Prelim. Rept. 211, p. 5, 8.

Temosachic formation

Pliocene, upper, Chihuahua, Mexico.

L. C. Pray, 1953, in Geological sciences at the California Institute of Technology: 

Calif. Inst. Technology, p. 32.

Tempa schist

Age not stated: North Carolina.

C. E. Hunter and P. W. Mattocks, 1936, TVA Div. Geology Bull. 4, p. 13.

Temple Cap member (of Navajo sandstone) 

Jurassic and Jurassic (?) : Utah. 

R. K. Grater, 1948, Am. Jour. Sci., v. 246, no. 5, p. 312, 313.

Temple Lake glacial stage

Pleistocene (Cochrane) : Wyoming.

J. H. Moss, 1951, Early Man in the Eden Valley: Philadelphia, Univ. Pa., Univ. Mus., 

p. 66-62.

Temple ton member (of Woodbine formation) 

Upper Cretaceous: Texas. 

H. R. Bergquist, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 98.

426779 57 24
364 GEOLOGIC NAMES OF NORTH AMEEICA

Tenakihi group

Precambrian (Proterozoic) : British Columbia, Canada. 

B. F. Roots, 1954, Canada Geol. Survey Mem. 274, p. 33-47.

Tenmile Creek dolomite 

Middle Devonian: Ohio. 

G. A. Stewart, 1938, Geol. >Soc. America Special Paper 8, p. 6, 7.

Tenmile Creek formation

Pennsylvanian (Bendian) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854,

864-870.

Tenney Canyon tongue (of Kayenta formation) 

Jurassic (?) : Utah.

Paul Averitt and others, 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 12, 

p. 2522.

Tennycape formation

Mississippian: Nova Scotia, Canada.

L. J. Weeks, 1945, Canada Geol. Survey Paper (Prelim. Map) 45-26.

Tepee Creek formation

Precambrian: Oklahoma.

C. A. Merritt and W. B. Ham, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no. 

2, p. 287, 290-299.

Tepee Trail formation

Eocene, upper: Wyoming.

J. D. Love, 1939, Geol. Soc. America Special Paper 20, p. 73-79.

Teposcolula limestone

Upper Jurassic: Oaxaca, Mexico.

G. P. Salas, 1949, Asociaci6n Mexicana Ge61ogos Petroleros Bol., v. 1, no. 2, 

p. 105-108.

Terra Cotta clay member (of Dakota formation) 

Cretaceous: Kansas.

R. C. Moore and others, 1940, Kans. State Geol. Survey Bull. 27, p. 40 (fig. 14). 

Norman Plummer and J. F. Romary, 1942, Kans. State Geol. Survey Bull. 41, pt. 9, 

p. 319, 329, 332-336.

Terrebonne formation

Middle Ordovician (Trenton) : Quebec, Canada.

T. H. Clark, 1944, Royal Soc. Canada Trans., sec. 4, v. 38, p. 29; 1952, Quebec 

Dept. Mines Geol. Rept. 46, p. 74.

Territories formation

Upper Devonian: Subsurface in Alberta, British Columbia, and Northwest

Territories (Mackenzie), Canada. 

C. W. Hunt, 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, no. 11, p. 2297-2300.

Teshierpi granite

Precambrian: Northwest Territories (Mackenzie), Canada. 

C. P. Jenney, 1954, Geol. Assoc. Canada Proc., v. 6, pt. 2, p. 14,15.

Tesla formation

Eocene, middle: California.

A. S. Huey, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 335.

Ralph Stewart, 1949, U. S. Geol. Survey Oil and Gas Inv. Prelim. Chart 34, sheet 2.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 365

Teslin formation

Permian: British Columbia, Canada.

K. D. Watson and W. H. Matthews, 1944, British Columbia Dept. Mines Bull. 19, 

p. 16-17.

Tesuque formation

Miocene, middle(?), to Pliocene, lower: New Mexico.

F. E. Kottlowski, 1953, N. Mex. Geol. Soc. Guidebook 4th Field Conf., p. 148 (chart). 

Brewster Baldwin and F. E. Kottlowski, 1955, N. Mex. State Bur. Mines Min. Ees. 

Scenic Trips to the Geol. Past, no. 1, p. 20, 21, 24.

T£te Jaune horizon (of McBride group) 

Precambrian: Alberta, Canada.

M. K. Sorensen, 1955, Alberta Soc. Petroleum Geologists Guidebook 5th Ann. Field 

Conf., p. 57.

Tetreauville formation

Middle Ordovician (Trenton) : Quebec, Canada.

T. H. Clark, 1941, Quebec Dept. Mines Prelim. Kept. 158, p. 4; 1952, Geol. Kept. 

46, p. 71-74.

Texistepec [formation]

Oligocene: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., torno 9, no. 5, correlation chart.

Thacher limestone member (of Manlius formation) 

Lower Devonian (Helderbergian) : New York. 

L. V. Bickard, 1955, N. Y. Geol. Assoc. Guidebook 27th Ann. Meeting, p. 7.

Thatcher limestone member (of Graneros shale) 

Upper Cretaceous: Colorado.

N. W. Bass, . E. Straub, and H. O. Woodbury, 1947, U. S. Geol. Survey Oil and Gas 

Inv. Prelim. Map 68.

Thelma member (of Bearpaw formation)

Upper Cretaceous: Saskatchewan, Canada.

G. M. Furnival, 1946, Canada Geol. Survey Mem. 2:42, p. 42-43.

Theodosia formation

Lower Ordovician: Missouri and Arkansas.

J. S. Cullison, 1944, Mo. Univ. School Mines and Metallurgy Bull., Tech. Ser., v. 15, 

no. 2, p. 25-32.

The Rocks sandstone 

Eocene: California.

R. R.Thorup, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1958 ; 1943, 

Calif. Dept. Nat. Res., Div. Mines Bull. 118, pt. 3, p. 464, 465.

Therrill clay member (of Weches formation) 

Eocene, middle (Claiborne) : Texas. 

H. B. Stenzel, 1938, Tex. Univ. Bur. Econ. Geol. Pub. 3818, p. 20, 97, 107-108 [1939].

Thirty-nine Mile volcanic series 

Oligocene, lower: Colorado. 

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 81,101-103.

Thomasville glacial substage

Pleistocene (lowan): Colorado.

R. L. Nelson, 1954, Jour. Geology, v. 62, no. 4, p. 328-329.
366 GEOLOGIC NAMES OF NORTH AMERICA

Thompson group

Carboniferous and younger: British Columbia, Canada, 

1948, Canada Geol. Survey Map 932A.

Thompson series

Jurassic: British Columbia, Canada.

C. H. Crickmay, 1930, Calif. Univ. Pub. Dept. Geol. Sci. Bull., v. 19, no. 2, p. 34, 80.

Thompson Valley limestone

Middle Ordovician : Virginia and Tennessee.

C. E. Prouty, 1946, Am. Assoc. Petroleum Geologists Bull., v. 30, no. 7, p. 1152-11,VJ

Thorburn member (of Stellarton series) 

Pennsylvanian: Nova Scotia, Canada. 

W. A. Bell, 1940, Canada Geol. Survey Mem. 225, p. 43 [1941].

Thoreau formation or sandstone 

Jurassic: New Mexico.

C. T. Smith, 1951, in N. Mex. Geol. Soc. Guidebook 2d Field Conf., p. 13, 38; 1954, 

N. Mex. Bur. Mines Min. Res. Bull. 31, p. 14-15.

Thorn group

Middle Silurian (Niagaran) : Illinois, Wisconsin, and Indiana. 

H. A. Lowenstam, 1949, 111. State Geol. Survey Kept. Inv. 145, p. 18.

Thorncrag limy gneiss

Cambro-Ordovician(?) : Maine.

L. W. Fisher, 1936, Am. Mineralogist, v. 21, no. 5, p. 323.

Thorup Fjord limestone

Ordovician: Northwest Territories (Ellesmere Island), Canada. 

J. C. Troelsen, 1950, Meddel. om Gr0nland, bind 149, nr. 7, p. 59-60.

Threadgill member (of Tanyard formation) 

Lower Ordovician: Texas.

V. B. Barnes, 1942, Tex. Univ. Bur. Bcon. Geology Min. Res. Survey Circ. 54, p. 1, 2. 

P. B. Cloud, Jr., V. E. Barnes, and Joeiah Bridge, 1946, Tex. Univ. Bur. Bcon. Geology 

Pub. 4301, p. 148, 151 [1945].

Three Rivers schist

Triassic(?): California.

Cordell Durrell, 1940, Calif. Univ. Dept. Geol. Sci. Bull., v. 25, no. 1, p. 15, 116.

Thule formation

Precambrian (upper Algonkian) : North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 220-222.

Thumb formation

Upper Cretaceous (?) : Nevada.

C. R. Longwell, 1952, Utah Geol. Mineralog. Survey [Utah Geol. Soc.] Guidebook 7, 

p. 35.

Thunder Lake sediments

Precambrian (Keewatin) : Ontario, Canada.

F. J. Pettijohn, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 766.

Jack Satterly, 1943, Ontario Dept. Mines Ann. Rept, v. 50, pt. 2, p. 29-30.

Thunder River volcanics

Precambrian (Keewatin) : Ontario, Canada.

F. J. Pettijohn, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 764.

Jack Satterly, 1943, Ontario Dept. Mines Ann. Rept., v. 50, pt. 2, p. 30.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 367

Thurman formation

Oligocene and Miocene: New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Me:s. Univ. Pubs, in Geology 4, p. 114, 

121-123.

Thursday dolomite

Middle Silurian: Utah.

F. W. Osterwald, 1953, U. S. Geol. Survey Trace Elements Inv. Kept. TEI-330, p. 105.

Tichborne gabbroic anorthosite

Precambrian: Ontario, Canada.

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.

Tichborne-Buck Bay granite and alaskite 

Precambrian: Ontario, Canada. 

W. D. Harding, 1951, Ontario Dept. Mines Ann. Kept, v. 56, pt. 6, p. 30.

Tick Canyon formation

Miocene, lower: California.

R. H. Jahns, 1939, Am. Jour. Sci., r. 237, no. 11, ]?. 819-821.

Tie Gulch dolomite member (of Manitou formation) 

Lower Ordovician: Colorado.

N. W. Bass and S. A. Northrop, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, 

no. 5, p. 906-907.

Tierra Blanca member (of Lake Valley formation) 

Mississippian (Osage) : New Mexico.

It. R. Laudon and A. L. Bowsher, 1949, Geol. Soc. America Bull., v. 60, no. 1, p. 13-14, 

fig. 4.

Tierra Colorada formation

Pleistocene: Tabasco, Mexico.

Javier Alvarez A., 1950, Asociaci6n Mexicana Ge61ogos Petroleros Bol., v. 2, no. 8, 

p. 525, 526. ,

Tierra Loma shale member (of Moreno formation) 

Upper Cretaceous: California. 

M. B. Payne, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1954.

Tiffanian age

Paleocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 9, pi. 1.

Tiflis member (of Wahluke formation) 

Pleistocene, upper: Washington. 

G. P. Beck, 1936, Mineralogist, v. 4, no. 11, p. 12, 14.

Tiger formation

Tertiary: Washington.

C. P. Park, Jr., and R. S. Cannon, Jr., 1943, U. S. Geol. Survey Prof. Paper 202, 

p. 23, pi. 1.

Tiglukpuk formation

Upper Jurassic: Alaska.

R. W. Imlay, 1955, U. S. Geol. Survey Prof. Paper 274-D, p. 70-71.

Tigre formation

Permian (Leonard) : Sonora, Mexico.

Manuel Alvarez, Jr., 1949, Asociacion Mexicana Ge61ogos Petroleros Bol., v. 1, no. 1, 

p. 53.
368 GEOLOGIC NAMES OF NORTH AMERICA

Tihvipah limestone

Pennsylvanian: California.

J. F. McAllister, 1952, Calif. Dept. Nat. Res., Div. Mines Special Rept. 25, p. 26-27.

Tilantongo marls

Upper Cretaceous: Oaxaca, Mexico.

G. P. Salas, 1949, AsociaciOn Mexicana Ge61ogos Petroleros Bol., v. 1, no. 2, p. 118-120.

Tilford lens (in Newcastle formation) 

Upper Cretaceous: South Dakota. 

R. M. Grace, 1952, Wyo. Geol. Survey Bull. 44, p. 14,16.

Tillamook volcanic series

Eocene, middle(?): Oregon.

W. C. Warren, Hans Norbisrath, and R. M. Grivetti, 1945, U. S. Geol. Survey Oil and 

Gas Inv. Prelim. Map 42.

Tillite Canyon formation

Precambrian or Lower Cambrian: Northeast Greenland.

Christian Poulsen, 1930, Meddel. om Gr0nland, bind 74, nr. 12, p. 306-307.

Tilt Point formation

Precambrian (Proterozoic) or Lower Cambrian: Newfoundland, Canada. 

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

Timber Lake member (of Fox Hills formation) 

Upper Cretaceous: South Dakota.

R. E. Morgan and B. C. Petsch, 1945, S. Dak. State Geol. Survey Rept. Inv. 49, 

p. 15-17, pi. 3.

Timpoweap member (of Moenkopi formation) 

Lower Triassic: Utah. 

H. E. Gregory, 1948, Geol. Soc. America Bull., v. 59, no. 3, p. 227.

Tina cyclothem (including Tina limestone)

Pennsylvanian (Des Moines) : Missouri, Iowa, Kaiisas, and Nebraska. 

L. M. Cline, 1941, Am. Assoc. Petroleum Geologists Bull., v. 25, no, 1, p. 29. 

J. M. Jewett, 1945, Kans. State Geol. Survey Bull. 58, p. 39-40, 66-67.

Tinajita formation

Upper Cretaceous: Cuba.

P. Bronnimann, 1955, Cushman Found. Foram. Research Contrib., v. 6, pt. 3, p. 99.

Tinaquaic sandstone member (of Sisquoc formation) 

Pliocene, lower and middle: California.

W. P. Woodring, M. N. Bramlette, and K. E. Lohman, 1943, Am. Assoc. Petroleum 

Geologists Bull., v. 27, no. 10, p. 1347-1352.

Tincanebite tongue

Lower and/or Middle Cambrian: Arizona.

E. D. McKee, 1945, Carnegie Inst. Washington Pub. 563, p. 14, 29, 80-82.

Tinguaro marl

Oligocene, lower: Cuba.

R. H. Palmer, 1938, Field guide to geological excursion in Cuba : Habana, Cuba, Carasa 

y Cia., p. 91; 1945, Jour. Geology, v. 53, no. 1, p. 5 (table 1), 17.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 369

Tinian beds

Oligocene [Aquitanian]: Mariana Islands (Tinian).

Risaburo Tayama, 1936, Geomorphology, geology, and coral reefs of Tinian Island 

together with Aguijan and Naftan Islands: Tohoku Univ., Inst. Geology and 

Paleontology Contr. in Japanese Language, no. 21, p. 20-21 [English translation 

in library of U. S. Geol. Survey, p. 19-20] ; 1952, Coral reef in the South Seas: 

Japan Hydrog. Office Bull., v. 11, p. 53, table 4 [English translation in library of 

U. S. Geol. Survey, p. 63].

Tinkers Creek shale facies (of C/uyahoga formation) 

Mississippian: Ohio. 

P. T. Holden, 1941, 111. Acad. Sci. Trans., v. 34, no. 2, p. 172.

Tin Mountain limestone

Mississippian: California.

J. P. McAllister, 1952, Calif. Dept. Nat. Res., Div. Mines Special Kept. 25, p. 20-22.

Tintamarre formation

Oligocene, upper: St. Martin (Tintamarre Island), French West Indies. 

C. W. Drooger, 1951, K. Nederlandse Wetensch. Sec. Sci. Proc., ser. B, v. 54, no. 1, 

p. 54-55.

Tioughnioga stage

Middle Devonian (Erian) : New York.

G. A. Cooper and others, 1942, Geol. Soc. America Bull., v. 53, no. 12, pt. 1, p. 1733, 

Chart 4.

Tippecanoe sequence

Ordovician (Chazyan to Mohawkian) : Central and western United States. 

L. L. Sloss, W. C. Krumbein, and E. C. Dapples in C. R. Longwell, chm., 1949, Geol. 

Soc. America Mem. 39, p. 110-111, 115.

Tisdale group

Precambrian (Keewatin) : Ontario, Canada.

W. R. Dunbar, 1948, in Structural geology of Canadian ore deposits: Canadian Inst. 

Mining and Metallurgy, p. 443-444.

Titanosarcolites limestone

Upper Cretaceous (Maestrichtian) : Jamaica, British West Indies. 

H. R. Hose, 1950, Colonial Geology and Min. Res., v. 1, no. 1, p. 17, 22. 

L. J. Chubb, 1955, Geol. Mag., v. 92, no. 3, p. 183-185.

Ti Valley series

Pennsylvanian: Oklahoma, Missouri, Kansas, Iowa, and Texas. 

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 16, 18-19.

Tlaltepexi gypsum series

Upper Jurassic: Oaxaca, Mexico.

G. P. Salas, 1949, Asociacidn Mexicana Gefllogos Petroleros Bol., v. 1, no. 2, p. 97-105.

Tlaxiaco beds

Lower Cretaceous: Oaxaca, Mexico.

G. P. Salas, 1949, AsociaciOn Mexicana Ge61ogos Fetroleros Bol., v. 1, no. 2, p. 108-109.

Toad formation

Triassic: British Columbia and Yukon, Canada.

E. D. Kindle, 1944, Canada Geol. Survey Paper 44-16, p. 7.

Tobago volcanic group

Cretaceous (?) : Tobago, British West IndieH.

J. C. Maxwell, 1948, Geol. Soc. America Bull., v. 59, no. 8, p. 816.
370 GEOLOGIC NAMES OF NORTH AMERICA

Tobas series

See Tuff series.

Tobin formation

Lower Triassic: Nevada.

S. W. Muller, H. G. Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map [GQ 7].

Toco formation

Lower Cretaceous : Trinidad, British West Indies. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., v. 4, table facing p. 572. 

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull., 

v. 20, no. 59, p. 32-33, 35 (table).

Toco Bay beds

Upper Cretaceous: Trinidad, British West Indies.

R. A. Liddle, 1946, The geology of Venezuela and Trinidad, 2d ed.: Ithaca, N. Y., 

Paleont. Research Inst., p. 713-715.

Todos Santos claystone member (of Sisquoc formation) 

Miocene and Pliocene: California.

W. P. Woodring, M. N. Bramlette, and K. E. Lohman, 1943, Am. Assoc. Petroleum 

Geologists Bull., v. 27, no. 10, p. 1347-1352.

Tofleld sand

Pleistocene: Alberta, Canada.

P. S. Warren, 1954, Royal Soc. Canada Trans., v. 48, sec. 4, p. 78.

Togo formation

Precambrian (Beltian) : Washington.

lan Campbell and J. S. Loofbourow, Jr., 1946, (abs.) Geol. Soc. America Bull., v. 57, 

no. 12, pt. 2, p. 1250.

Tolchaco gravels

Quaternary: Arizona.

Parry Reiche, 1937, Am. Jour. Sci., 5th ser., v. 34, no. 200, p. 130-134.

Toledo member (of Universidad formation) 

Eocene, lower: Cuba.

J. F. de Albear, 1941, Soc. Cubana Ingenieros Rev., v. 36, p. 566, chart facing

p. 564. 

P. J. Bermudez, 1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 236.

Toledo series

Miocene: British Honduras and Guatemala.

L. H. Ower, 1922, Geology of British Honduras: Belize Independent, v. 8, no. 440; 

1928, Jour. Geology, v. 36, no. 6, p. 501-502.

Toluca quartz monzonite

Ordovician: North Carolina and South Carolina.

W. R. Griffltts and W. C. Overstreet, 1952, Am. Jour. Sci., v. 250, no. 11, p. 779-783.

Tomah member (of Franconia formation)

Upper Cambrian: Wisconsin and Minnesota. 

R. R. Berg, 1951, Minn. Geologist, v. 8, no. 4, p. 2.

Tombstonian series

Paleozoic (Devonic) : Arizona.

[C. R.] Keyes, 1942, Pan-Am. Geologist, v. 77, no. 3, p. 228.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 371

Tomera formation

Middle Pennsylvanian (Atokan-Desmoinesian) : Nevada.

R. H. Dott, Jr., 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 11, p. 2243- 

2248, fig. 2.

Tomil agglomerate

Oligocene: Caroline Islands (Yap and Map).

Risaburo Tayama, 1935, Topography, geology, and coral reefs of the Yap Islands: 

Tohoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no. 19, 

p. 29-30 [English translation in library of U. S. Geol. Survey, p. 25-26] ; 1952, 

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 62-63, table 4, 

[English translation in library of U. S. Geol. Survey, p. 73-74].

TSmmer Bay group

Precambrian to Cambrian: Northeast Greenland.

H. P. Schaub, 1950, Meddel. om Gr0nland, bind 114, nr. 10, p. 14-16.

Tom Sank limestone member (of Bonneterre formation) 

Cambrian: Missouri.

G. F. Brightman, 1937, Mo. Acad. Sci. Proc., v. 3, no. 4, p. 120; 1938, Jour. Geology, 

v. 46, no. 3, p. 248-267.

Tonka formation

Mississippian and Pennsylvanian (Meramecian-Springeran) : Nevada.

R. H. Dott, Jr., 1955, Am. Assoc. Petroleum Geologists Bull., v. 39, no. 11, p. 2222- 

2233, fig. 2.

Tonnancourt quartz monzonite

Precambrian (post-Keewatin) : Quebec, Canada.

W. W. Longley, 1946, Quebec Dept. Mines Geol. Rept. 24, p. 14.

Tonnie siltstone member (of Chinitna formation) 

Upper Jurassic: Alaska. 

L. B. Kellum, 1945, N. Y. Acad. Sci. Trans., ser. 2, v. 7, no. 8, p. 203.

Topagoruk formation

Lower Cretaceous: Alaska (subsurface and surface).

George Gryc, W. W. Patton, Jr., and T. G. Payn«, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 162-163.

Topley granite

Triassic(?) : British Columbia, Canada. 

1948, Canada Geol. Survey Map 932A.

Tonnentine formation

Pennsylvanian: New Brunswick, Nova Scotia, and Prince Edward Island,

Canada. 

J. F. Caley and others, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 2,

p. 478. 

W. C. Gussow, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 7, p. 1758.

Torok formation

Lower Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 160-162.

Toroweap formation

Permian: Arizona.

E. D. McKee, 1937, Carnegie Inst. Washington Year Book 36, p. 341-343; 1938, Pub. 

492, p. 12-28.
372 GEOLOGIC NAMES OF NORTH AMERICA

Torrejonian age

Paleocene: North America.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 9, pi. 1.

Torres member (of Yeso formation)

Permian (Leonard series) : New Mexico.

R. H. Wilpolt and others, 1946, U. S. Geol. Survey Oil and Gas Inv. Prelim. Map 61.

Tot-Gullwing Lakes granite

Precambrian: Ontario, Canada.

W. D. Harding, 1951, Ontario Dept. Mines Ann. Kept., v. 59, pt. 4, p. 12.

Totolapa f acies

Lower Jurassic (Lias) : Puebla, Mexico.

H. K. Brben, 1954, Soc. Geol. Mexicana Bol., tomo 17, no. 2, p. 35-36.

Totolzingo formation

Pleistocene, upper: Cuenca de Mexico, Mexico. 

Helmut de Terra, 1947, Ciencia, v. 8, nos. 6-9, p. 155.

Touchet beds

Pleistocene: Washington.

R. P. Flint, 1938, Geol. Soc. America Bull., v. 49, no. 3, p. 493-499.

Tough Mountain quartzite 

See Tough Nut quartzite.

Tough Nut quartzite

Lower Cambrian: California.

J. C. Hazzard, 1938 (abs.) Geol. Soc. America Proc. 1937, p. 241.

Tourelle sandstone

Lower Ordovician: Quebec, Canada.

H. W. McGerrigle, 1954, Canadian Mining Jour., v. 75, no. 8, p. 60.

To veil member (of Mannville formation)

Lower Cretaceous: Alberta, Canada (subsurface).

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1614-1615.

Townline Lake granodiorite

Precambrian (Laurentian) : Minnesota.

J. T. Stark and V. G. Sleight, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1032 

(table 2), 1033.

Townsend shale

Oligocene, lower: Washington.

J. W. Durham, 1942, Jour. Paleontology, v. 16, no. 1, p. 86.

Townsite flows

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. P. Henderson and I. C. Brown, 1950, Canadian Inet. Mining and Metallurgy Trans., 

v. 53, p. 420.

Towsley formation

Miocene, upper, and Pliocene, lower: California.

E. L. Winterer and D. L. Durham, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, 

map sheet 5.

Toyabe quartz latite

Pliocene (?) : Nevada.

H. G. Ferguson and S. H. Cathcart, 1954, U. S. Geol. Survey Geol. Quadrangle Map 

GQ 40.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 373

Tracian stage

Late Cretaceous: California.

P. P. Goudkoff, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, p. 987-990.

Traekpas formation

Upper Jurassic (Callovian) : Northeast Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 253-254.

Trail granodiorite

Jurassic: British Columbia, Canada.

Geoffrey Gilbert, 1948, Structural geology of Canadian ore deposits: Montreal, Quebec, 

Canadian Inst. Mining and Metallurgy, p. 189.

Trail City member (of Fox Hills formation) 

Upper Cretaceous: South Dakota.

R. E. Morgan and B. C. Petsch, 1945, S. Dak. State Geol. Survey Rept. Inv. 49, 

p. 13-14.

Trail Hill sandstone (in Chinle formation) 

Upper Triassic: Utah. 

P. D. Proctor, 1953, Utah Geol. Mineralog. 'Survey Bull. 44, p. 10-11, 22-23.

Tranquilla shale

Eocene, upper: Panama Canal Zone and Panama.

H. N. Coryell and J. R. Embich, 1937, Jour. Paleontology, v. 11, no. 4, p. 289-291.

Tranquillon volcanics

Miocene, lower (Saucesian) : California.

T. W. Dibblee, Jr., 1950, Calif. Dept. Nat. Res., Div. Mines Bull. 150, p. 33-34, pi. 1, 2.

Tremblay beds

Middle Ordovician: Quebec, Canada.

G. W. Sinclair, 1953, Am. Jour. Sci., v. 251, no. 12, p. 843, 844.

Trembling Mountain gneiss

Precambrian: Quebec, Canada.

P. D. Adams, 1895, Canada Geol. Survey Ann. Rept. 8, p. 42J.

P. P. Osborne, 1936, Am. Jour. Sci., ser. 5, v. 32, no. 192, p. 416-417.

Tren formation

Middle Cambrian: Sonora, Mexico.

G. A. Cooper and A. R. V. Arellano, 1952, Smitlisonian Misc. Coll., v. 119, no. 1, p. 9.

Tresner limestone

Pennsylvanian: Illinois.

E. P. Taylor and G. H. Cady, 1944, 111. State Geol. Survey Rept. Inv. 93, p. 22.

Tres Puentes formation

Miocene, upper: Tabasco and Chiapas, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. o, correlation chart. 

G. P. Salas and Ernesto I/opez Ramos, 1951, Asociaci6n Mexicana Ge61ogos Petroleros 

Bol., v. 3, nos. 1-2, p. 40.

Tres Virgenes volcanics

Quaternary: Baja California, Mexico.

I. P. Wilson, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 9, p. 1769.

Treytown Pond formation

Middle Cambrian: Newfoundland, Canada.

Frederick Beta, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 16-17.
374 GEOLOGIC NAMES OF NORTH AMERICA

Tribune formation

Upper Cretaceous: British Columbia, Canada. 

J. L. Usher, 1952, Canada Geol. Survey Bull. 21, p. 21.

Trinchera formation

Oligocene, upper: Dominican Republic.

W. M. Small, 1948, 'Seismo!. Soc. America Bull., v. 38, no. 1, p. 26.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 23.

Trinidad schists

Age unknown: Cuba.

R. H. Palmer, 1945, Jour. Geology, v. 53, no. 1, p. 5 (table 1), 6.

Trinidad Point calcareous clay

Oligocene, upper: Trinidad, British West Indies.

J. A. Cushman and H. H. Renz, 1947, Cushman Lab. Foram. Research Special Pub. 

22, p. 2-3.

Troedsson Cliff formation

Middle Ordovician: North Greenland.

Lauge Koch, 1929, Meddel. om Gr0nland, bind 73, afd. 2, nr. 2, p. 235.

Trois-Rivieres formation

Upper Cretaceous: Haiti.

Jacques Butterlin, 1954, Inst. Frangais d'Halti Mem. 1, p. 52.

Troublesome formation 

Oligocene: Colorado.

T. S. Lovering and E. N. Goddard, 1950, U. S. Geol. Survey Prof. Paper 223, p. 41. 

J. D. Schlottmann and L. E. Smith, 1954, U. S. Atomic Energy Comm. [Pub.] 

RME-1042, p. 8.

Trout Brook formation

Middle Cambrian: Nova Scotia, Canada.

R. D. Hutchinson, 1952, Canada Geol. Survey Mem. 263, p. 40-42.

Trout River formation

Upper Devonian: Northwest Territories (Mackenzie), Canada. 

C. H. Crickmay, 1953, New Spiriferidae from the Devonian of western Canada: 

Calgary, Canada, Imperial Oil Limited, p. 1, 11.

Trowbridge shale

Upper Jurassic: Oregon.

R. L. Lupher, 1941, Geol. Soc. America Bull., v. 52, no. 2, p. 227, 263-265.

Troy limestone member (of White Limestone formation) 

Eocene, middle: Jamaica, British West Indies.

V. A. Zans, H. R. Versey, and J. B. E. Williams in V. A. Zans, 1955, Jamaica Geol. 

Survey Dept. Ann. Rept. 1953-54, p. 4.

Truckhaven rhyolite

Pliocene: California.

T. W. Dibblee, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, chap. 2, p. 24.

Trump conglomerate 

Pliocene: Colorado.

J. H. Johnson, 1937, (abs.) Colorado Univ. Studies, v. 25, no. 1, p. 77. 

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 70-72.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN1936-1955 375

Tsegi formation

Quaternary: Arizona.

J. T. Hack, 1941, Geog. Review, v. 31, no. 2, p. 262-263; 1942, Harvard Univ. Peabody Mus. Am. Archaeology and Ethnology Papers, v. 35, no. 1, p. 51-53.

Tualatin terrace gravels 

Pleistocene: Oregon.

R. C. Treasher, 1942, Geologic map of the Portland area, Oregon (1:96,000) : Oreg. 

State Dept. Geology and Mineral Res.

Tucumcarian series

Mesozoic (Early Cretacic) : New Mexico.

Charles Keyes, 1940, Pan-Am. Geologist, v. 74, no. 2, p. 105, 153-154.

Tuerto gravel

Quaternary: New Mexico.

C. B. Stearns, 1953, Geol. Soc. America Bull., v. 64, no. 4, p. 476, 477, pi. 1.

Tuff series

Cretaceous: Cuba.

M. G. Rutten, 1936, Geog. Geol. Meded. (Utrecht Univ.) Physiog.-Geol. Reeks, no. 11, 

p. 7-10.

Tuira formation

Miocene, middle: Panama.

Karl Sapper, 1937, Mittelamerika, Handbuch der regionalen Geologic: Heidelberg, 

Band 8, Abt. 4a, Heft 29, p. 132,134 (correlation chart).

Tuktu formation

Lower Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

V. 41, no. 5, p. 162.

Tularosa Malpais lava 

Recent: New Mexico. 

L. R. Dice, 1940, Scientific Monthly, v. 50, p. 419-420.

Tulik basalt

Tertiary and Quaternary: Alaska (Aleutian Islands).

F. M. Byers, Jr., and others, 1947, U. S. Geol. Survey Alaskan Volcano Inv. Rept. 2, 

pt 3, p. 28.

Tullos clay member (of Yazoo clay) 

Eocene, upper: Louisiana. 

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 78, 98-99.

f Tuluga member (of Schrader Bluff formation) 

Upper Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 166.

Tuluvak tongue (of Prince Creek formation) 

Upper Cretaceous: Alaska.

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washington Acad. Sci. Jour., 

v. 41, no. 5, p. 166.

Tumbez limestone

Middle Ordovician: Virginia.

B. N. Cooper, 1945, Va. Geol. Survey Bull. 66, p. 17,133-134, 204.
376 GEOLOGIC NAMES OF NORTH AMERICA

Tumbledown gneiss

Age not stated: Maine.

Kern Jackson, 1953, Maine State Geologist Kept. 1951-1952, p. 66.

Tumco formation

Paleozoic or older: California.

P. C. Henshaw, 1942, Calif. Jour. Mines and Geology, v. 38, no. 2, p. 155-157, pi. 2.

Tunnel Creek glacial stage

Pleistocene (Wisconsin) : Oregon.

T. P. Thayer, 1939, Oreg. State Dept. Geology and Mineral Res. Bull. 15, p. 20, 24-26.

Tunnel Hill member (of Brasso formation)

Miocene, lower or middle: Trinidad, British West Indies. 

H. H. Renz, 1942, 8th Am. Sci. Cong. Proc., V. 4, p. 554.

Tunnel Mountain member (of Rocky Mountain formation) 

Permian and Pennsylvanian (?) : Alberta, Canada. 

F. W. Beales, 1950, Canada Geol. Survey Paper 50-27, p. 6.

Tunnel Mountain member (of Bundle formation)

Mississippian and Pennsylvanian (?) : Alberta, Canada. 

F. W. Beales, 1950, Canada Geol. Survey Paper 50-27, p. 4.

Turkey Mountain andesite

Quaternary: New Mexico.

R. F. Collins, 1949, Geol. Soc. America Bull., v. 60, no. 6, p. 1033.

Turnbull conglomerate

Miocene and Pliocene: California.

G. J. Bellemin, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 4, p. 652 (fig. 2), 

653, 655-656.

Turner cyclothem (including Turner limestone) 

Pennsylvanian: Illinois.

R. C. Moore and others, 1944, Geol. Soc. America Bull., v. 55, no. 6, Chart 6, column 29. 

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 12,16.

Turners Falls sandstone

Triassic: Massachusetts.

M. E. Willard, 1951, Bedrock geology of the Mount Toby quadrangle, Massachusetts: 

U. S. Geol. Survey Geol. Quadrangle Map [GQ 8].

Turner Valley member (of Tunnel Mountain formation) 

Mississippian: Alberta, Canada (subsurface). 

W. B. Gallup, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 4, p. 809.

Turtle Mountain formation

Paleocene: Manitoba and Saskatchewan, Canada.

W. A. Johnston, 1934, Canada Geol. Survey Mem. 174, p. 11 (table).

R. T. D. Wickenden, 1945, Canada Geol. Survey Mem. 239, p. 50-51, geol. map.

Turure formation

Upper Cretaceous: Trinidad, British West Indies.

R. A. Liddle, [1928], The geology of Venezuela and Trinidad: Fort Worth, Tex., J. P. 

MacGowan, p. 439-441.

Tusas granite

Precambrian: New Mexico.

Evan Just, 1937, N. Mex. School Mines Bull. 13, p. 44-46.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 377

Tuskahoma siliceous shale member (of Stanley formation) 

Mississippian: Oklahoma.

August Goldstein, Jr., and T. A. Hendricks, 1953, Geol. Soc. America Bull., v. 64, 

no. 4, p. 431.

Tusonimo limestone (in Pacheta member of Lowell formation) 

Lower Cretaceous: Arizona. 

A. A. Stoyanow, 1949, Geol. Soc. America Mem. 38, p. 12.

Tvege banded psammitic/pelitic group 

Precambrian: Northeast Greenland. 

G. P. Leedal, 1952, Meddel. om Gr0nland, bind 142, nr. 6, p. 11-12, pi. 2.

Twelvemile Canyon member (of Arapien shale) 

Upper Jurassic: Utah. 

B. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 122,125.

Twilight Park conglomerate

Upper Devonian: New York.

C. S. Prosser, 1899, N. Y. State Geologist 17th Ann. Kept., p. 283-284. 

G. H. Chadwick, 1940, N. Y. State Geol. Assoc. 16th Ann. Meeting Field Guide Leaflets, 

p. 2.

Twillingate granite

Post-Ordovician: Newfoundland, Canada.

D. M. Baird, 1953, Newfoundland Geol. Survey Kept. 1, p. 13,14.

Twin Lakes glacial substage

Pleistocene (Wisconsin) : Colorado, Wyoming, and New Mexico. 

L. L. Bay, 1939, (abs.) Geol. Soc. America Bull., v. 50, no. 12, pt. 2, p. 2007; 

1940, v. 51, no. 12, pt. 1, p. 1857-1858.

Twisselmann sandstone member (of Monterey formation) 

Miocene, middle and upper: California.

H. H. Heikkila and G. M. MacLeod, 1951, Calif. Dept. Nat. Res., Div. Mines Special 

Kept. 6, p. 12, pi. 1.

Twist Gulch member (of Arapien shale) 

Upper Jurassic: Utah. 

E. M. Spieker, 1946, U. S. Geol. Survey Prof. Paper 205-D, p. 122,124,125.

Two Creeks forest bed

Pleistocene (Wisconsin) : Wisconsin.

J. W. Goldthwait, 1907, Wis. Geol. Nat. History Survey Bull. 17, p. 61-62.

L. R. Wilson, 1932, Wis. Acad. Sci., Arts and Letters Trans., v. 27, p. 31-46.

Two Mile member (of Crockett formation) 

Eocene (Claiborne) : Texas.

G. D. Harris, 1941, Tex. Univ. Bur. Econ. Geology Min. Res. Survey Circ. 33, 

p. 13-14.

Two wells sandstone lentil (of Mancos shale) 

Upper Cretaceous: New Mexico. 

W. S. Pike, Jr., 1947, Geol. Soc. America Mem. 24, p. 22,35-36.

Tyaughton group

Upper Triassic: British Columbia, Canada.

C. B. Cairnes, 1943, Canada Geol. Survey Paper 43-15, p. 4-5.

Tynemouth Creek formation

Upper Carboniferous: New Brunswick, Canada.

A. O. Hayes and B. P. Howell, 1937, Geol. Soc. America Special Paper 5, p. 118-119.
378 GEOLOGIC NAMES OF NORTH AMERICA

Tyroler series

Precambrian: Northeast Greenland.

G. P. Leedal, 1952, Meddel. om Gr0nland, bind 142, nr. 6, p. 11-21, pi. 2.

Tyrolerdal banded psammitic/pelitic group 

Precambrian: Northeast Greenland. 

G. P. Leedal, 1952, Meddel. om Grtfnland, bind 142, nr. 6, p. 11,16-18, pi. 2.

Tyrolerdal group

Precambrian: Northeast Greenland.

G. P. Leedal, 1952, Meddel. om Grtfnland, bind 142 nr. 6, p. 11, 12-16, pi. 2.

Tyson member (of Monastery formation) 

Lower Cambrian: Vermont. 

P. H. Osberg, 1952, Vt. Geol. Survey Bull. 5, p. 42, 43, 44.

Tyus member (of Weches formation) 

Eocene, middle (Claiborne) : Texas. 

H. B. Stenzel, 1938, Tex. Univ. Bur. Econ. Geol. Pub. 3818, p. 20, 97, 100-104 [1939].

Uchi series

Precambrian: Ontario, Canada.

J. D. Bateman, 1940, Ontario Dept. Mines Ann. Kept, v. 48, pt. 8, p. 12-14.

Ucross formation

Recent (?) : Wyoming.

L. B. Leopold and J. P. Miller, 1954, U. S. Geol. Survey Water-Supply Paper 1261, p. 10.

Udall limestone lentil (in Gueda Springs shale member of Wellington formation) 

Permian: Kansas. 

W. A. Ver Wiebe, 1937, Wichita Municipal Univ. Bull., v. 12, no. 5, p. 13-14.

Uintan age

Eocene: North America.

H. E. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 10, pi. 1.

Ulatisian stage

Eocene, middle: California.

V. S. Mallory, 1953, (abs.) Jour. Paleontology, v. 27, no. 6, p. 903.

Ulen Quarry beds

Eocene, upper: Trinidad, British West Indies.

E. A. Liddle, [1928], The geology of Venezuela and Trinidad : Fort Worth, Tex., J. P. 

MacGowan, p. 456-457.

Ulvebjerg sandstones and tillites

Precambrian (Greenlandian) : North Greenland. 

Erdhart Frankl, 1954, Meddel. om Gr0nland, bind 116, nr. 2, p. 41-45, 56, 79, pi. 1.

Umatac andesite

Eocene: Mariana Islands (Guam).

Risaburo Tayama, 1952, Coral reefs in the South seas: Japan Hydrog. Office Bull., 

V. 11, p. 48, table 4 [English tanslation in library of D. S. Geol. Survey, p. 57, 58].

tUmiat formation

Lower and Lower (?) Cretaceous: Alaska (subsurface and surface). 

George Gryc, W. W. Patton, Jr., and T. G. Payne, 1951, Washingon Acad, Sci. Jour., 

v. 41, no. 5, p. 162-163.

Uncle Israels granite

Age not stated: Maine.

G. H. Chadwick, 1944, N. Y. Acad. Sci. Trans., ser. 2, v. 6, no. 6, p. 172.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 379

Uncle Sam porphyry

Upper Cretaceous or Tertiary, lower: Arizona.

B. S. Butler, E. D. Wilson, and C. A. Rasor, 1938, Ariz. Bur. Mines Bull. 143, Geol. 

Ser. 10, p. 24-25.

Uncompahgran system

Precambrian: Western North America.

N. A. E. Hinds, 1936, Carnegie Inst. Washington Pub. 463, p. 58, 134.

Underwood formation

Lower Mississippian: Indiana and Kentucky.

Guy Campbell, 1946, Geol. Soc. America Bull., v. 57, no. 9, p. 849-851, 858.

Underwood Mountain lava 

Pliocene: Oregon. 

W. D. Lowry and E. M. Baldwin, 1952, Geol. Soc. America Bull., v. 63, no. 1, pi. 2.

Union Church transition phase (of Tullos member of Yazoo clay) 

Eocene, upper: Louisiana. 

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 78, 99-10O.

Union Island group

Precambrian (Proterozoic) : Northwest Territories (Mackenzie), Canada. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 37 7A.

Union Station shale member (of Chanute formation) 

Pennsylvanian (Missouri series) : Missouri. 

J. R. Clair, 1943, Mo. Geol. Survey and Water Res., 2d ser., v. 27, pi. 1.

Unison granodiorite

Precambrian: Quebec, Canada.

H. C. Cooke, W. F. James, and J. B. Mawdsley, 1931, Canada Geol. Survey Mem. 166, 

p. 133.

Unity group

Upper Devonian (?) (Oliverian magma series) : New Hampshire. 

C. A. Chapman, 1942, Geol. Soc. America Bull., v, 53, no. 6, p. 898.

Universal limestone member (of Dugger formation) 

Pennsylvanian: Indiana. 

C. E. Wier, 1951, U. S. Geol. Survey Coal Inv. Map C 9.

Universidad formation 

Eocene, lower: Cuba.

P. J. Bermudez, 1937, Soc. Cubana Historia Nat. Mem., v. 11, no. 3, p. 163-169; 

1950, Soc. Cubana Historia Nat. Mem., v. 19, no. 3, p. 231-233.

Upham dolomite

Upper Ordovician (Cincinnatian) : New Mexico.

V. C. Kelley and Caswell Silver, 1952, N. Mex. Univ. Pubs, in Geology 4, p. 59-60, fig. 4.

Upham formation

Mississippian: New Brunswick, Canada.

F. J. Alcock, [1938], Canada Geol. Survey Mem. 216, p. 30-31.

Upper Amate formation

See Amate (Lower and Upper) formation.

Upper Medinilla limestone

See Medinilla (Lower and Upper) limestone.

426779 57 25
380 GEOLOGIC NAMES OF NORTH AMERICA

Urbana phyllite

Precambrian(?) : Maryland.

A. I. Jonas and G. W. Stose, 1938, Washington Acad. Sci. Jour., v. 28, no. 8, p. 346.

tfslika formation

Lower Cretaceous: British Columbia, Canada.

E. P. Roots, 1948, Canada Geol. Survey Paper 48-5, p. 14.

Usine limestone

Pleistocene: Guadeloupe (Grande Terre), French West Indies. 

J. W. W. Spencer, 1901, Geol. Soc. London, Quart. Jour., v. 57, p. 510, 512; 1902, 

v. 58, p. 350.

Ute Canyon tongue (of Cliff House sandstone) 

Upper Cretaceous: New Mexico. 

P. T. Hays and A. D. Zapp, 1955, U. S. Geol. Survey Oil and Gas Inv. Map OM 144.

Ute Pass dolomite

Upper Cambrian (?) : Colorado.

J. C. Maher, 1950, U. S. Geol. Survey Oil and Gas. Inv. Prelim. Chart 39.

Utica clay

Pennsylvanian: Illinois.

H. R. Wanless, 1939, Geol. Soc. America Special Paper 17, p. 25-26, 106.

Uvas basalt

Miocene: New Mexico.

P. E. Kottlowski, 1953, N. Mex. Geol. Soc. Guidebook 4th Field Conf., p. 32 (map), 

144, 148 (chart).

Uvas conglomerate member (of Tejon formation) 

Eocene: California. 

J. G. Marks, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 1922.

Uwekahuna ash

Pleistocene or Recent: Hawaiian Islands (Hawaii). 

J. B. Stone, 1926, Bernice P. Bishop Mus. Bull. 33, p. 27-28.

Uzpanapa conglomerate

"Eocene, lower: Vera Cruz, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart.

Luis Benavides G., 1953, Congreso Cient. Mexicano Mem., v. 3, p. 199.

Vaca Triste sandstone member (of Salado formation) 

Permian (Ochoa) : New Mexico (subsurface). 

J. E. Adams, 1944, Am. Assoc. Petroleum Geologists Bull., v. 28, no. 11, p. 1610.

Vacaville shale

Eocene, middle: California.

C. W. Merriam and P. E. Turner, 1937, Calif. Univ. Pubs., Dept. Geol. Sci. Bull., 

v. 24, no. 6, p. 96.

Vadito formation

Precambrian: New Mexico.

Arthur Montgomery, 1953, N. Mex. State Bur. Mines Min. Res. Bull. 30, p. 21.

"V alders glacial substage

Pleistocene (Wisconsin) : Wisconsin.

P. T. Thwaites, 1943, Geol. Soc. America Bull., v. 54, no. 1, p. 121, 136-141.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 381

Vallecito basalt

Quaternary: New Mexico.

H. T. U. Smith, 1937, (abs.) Geol. Soc. America Proc. 1936, p. 103.

Vallecitos rhyolites

Precambrian: New Mexico.

Bran Just, 1937, N. Mex. School Mines Bull. 13, p. 44.

Valle de Angeles formation

Upper Cretaceous or Tertiary, lower: Honduras.

R. H. Carpenter, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 28-29.

Vallejo formation

Eocene or Oligocene: Colorado.

J. E. Upson, 1941, Am. Jour. Sci., v. 239, no. 8, p. 577-588.

Valley Mountain facies (of Flagstaff formation) 

Paleocene, upper: Utah. 

W. N. Gilliland, 1951, Nebr. Univ. Studies, new ser., no. 8, p. 26-28.

Valley View member (of Curtin limestone)

Middle Ordovician (Mohawkian) : Pennsylvania. 

G. M. Kay, 1943, Econ. Geology, v. 38, no. 3, p. 194, 197.

Valmont dolomite

Upper Ordovician: New Mexico.

L. C. Pray, 1953, Am. Assoc. Petroleum Geologists Bull., v. ,37, no. 8, p. 1906-1911.

Valmy formation

Middle (?) Ordovician: Nevada.

R. J. Roberts, 1951, Geology of the Antler Peak quadrangle, Nevada : U. S. Geol. Surrey 

Geol. Quadrangle Map [GQ 10].

Val Verde tonalite

Jurassic(?): California.

R. W. Wilson, 1937, Am. Mineralogist, v. 22, no. 2, p. 122-130.

Vamp Creek granodiorite

Precambrian: Manitoba, Canada.

Jorma Kalliokoski, 1952, Canada Geol. Survey Mem. 270, p. 26,

Van Bibber shale member (of South Platte formation) 

Lower Cretaceous: Colorado. 

K. M. Waage", 1955, U. S. Geol. Survey Prof. Paper 274-B, p. 31-33.

Vandusen cy cloth em (including Vandusen clay, shale, and sandstone)' 

Pennsylvanian (Pottsville) : Ohio. 

R. E. Lamborn, C. R. Austin, and Downs Schaaf, 1938, Ohio Geol. Survey, ser. 4, Bun.

39, p. 88-89. 

N. K. Flint, 1951, Ohio Geol. Survey, ser. 4, Bull. 48, p. 29.

Vanesti tongue

Upper Cretaceous: Alberta, Cnada.

A. W. Nauss, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 11, p. 1620-1621.

Vanguard formation

Jurassic: Saskatchewan, Canada (subsurface).

J. R. Ower, 1953, Canadian Inst. Mining and Metallurgy Trans., v. 56, p. 397-398. 

R. L. Milner and G. E. Thomas, 1954, Western Canada sedimentary basin: Tulsar 

Okla., Am. Assoc. Petroleum Geologists, p. 263-267.
382 GEOLOGIC NAMES OF NORTH AMERICA

Vanhem formation

Pleistocene: Kansas.

C. W. Hibbard, 1949, Mich. Univ. Mus. Paleontology Contr., v. 7, no. 4, p. 84-86.

Vann quartzite

Lower Cambrian: North Carolina.

G. W. Stose and A. J. Stose, 1947, Am. Jour. Sci., v. 245, no. 10, p. 626, 627.

Van Oser member (of Jordan sandstone)

Upper Cambrian (St. Croixian) : Minnesota.

C. R. Stauffer, G. M. Schwartz, and G. A. Thiel, 1938, (abs.) Geol. <Soc. America Bull., 

v. 49, no. 12, pt. 2, p. 1902 ; 1939, v. 50, no. 8, p. 1240.

Van Valkenburg beds 

[Recent?]: Florida. 

E. H. 'Sellards, 1940, Geol. Soc. Am. Bull., v. 51, no. 3, p. 381-385.

Van Vleck sands

Oligocene: Texas (subsurface).

Alexander DPussen and K. D. Owen, 1939, Am. Assoc. Petroleum Geologists Bull., 

v. 23, no. 11, p. 1634.

Vardekl0ft formation

Upper Jurassic (Callovian) : Northeast Greenland.

Alfred Rosenkrantz in Lauge Koch, 1929, Meddel. om Gr0nlanel, bind 73, afd. 2, nr. 1. 

p. 145-146.

Vaseaux formation

Carboniferous (?) : British Columbia, Canada. 

H. S. Bostock, 1940, Canada Geol. Survey Map 341A.

Vatia trachyte

Pliocene or Pleistocene, lower: Samoa Islands (Tutuila).

R. A. Daly, 1924, Carnegie Inst. Washington Pub. 340, p. 108-110, 129-130.

Vauclin tuffs

Miocene: Martinique, French West Indies.

Jean Giraud, 1918, Esquisse ge"olog!que de la Martinique avec carte ggologique : HanoiHaiphong, Imprimerie d'ExtrSme-Orient, p. 12. 

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1581, 1596.

Vecol limestone

Paleozoic (Devonic) : Arizona.

[C. R.] Keyes, 1942, Pan-Am. Geologist, v. 77, no. 3, p. 228.

Veleno member (of Cook Mountain formation)

Eocene (Claiborne) : Texas, and Tamaulipas, Mexico.

J. M. Patterson, 1942, Am. Assoc. Petroleum Geologists Bull., v. 26, no. 2, p. 259, 

262-263.

Velpen limestone

Pennsylvanian: Indiana.

J. M. Weller, L. G. Honbest, and C. O. Dunbar in C. O. Dunbar and L. G. Henbest,

1942, 111. State Geol. Survey Bull. 67, p. 32 [1943]. 

C. L. Cooper, 1946, 111. State Geol. Survey Bull. 70, p. 16.

Venada beda

Mississippian (Meramecian) : Sonora, Mexico.

J. M. Weller and others, 1948, Geol. Soc. America Bull., v. 59, no. 2, p. 136, Chart 5. 

column 36.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 383

Venado formation

Upper Cretaceous (Chico) : California.

J. M. Kirby, 1943, Am. Assoc. Petroleum Geologists Bull., v. 27, no. 3, p. 287-289.

Veniella shale

Upper Cretaceous: Jamaica, British West Indies. 

L. J. Chubb, 1955, Geol. Mig., v. 92, no. 3, p. 185-186.

Venteran substage

Pennsylvanian (Desm4>inesian) : Iowa, Kansas, Missouri, Nebraska, and

Oklahoma. {

W. V. Searight and others, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 12, 

p. 2748-2749.

Venturian stage

Pliocene: California.

Manley Natland, 1953, Pacific Petroleum Geologist, v. 7, no. 2, p. 2.

Venus formation j

Precambrian (Chuarac) : Arizona.

Charles Keyes, 1938, Pan-^bn. Geologist, v. 70, no. 2, p. 107, 112.

Verda member (of Yazoo clay) 

Eocene, upper: Louisiana. 

H. N. Fisk, 1938, La. Deptj Conserv. Geol. Bull. 10, p. 78, 100-102.

Veredas group j

Pennsylvanian (Missouri series) : New Mexico.

M. L. Thompson, 1942, N. !Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 57-60;

Verendrye member (of Piejre shale) 

Upper Cretaceous: South Dakota. 

W. V. Searight, 1937, S. Tak. State Geol. Survey Kept. Inv. 27, p. 25-26, pi. 3.

Vermilion-Bluett Lakes conglomerate 

Precambrian: Ontario, Canada. 

W. D. Harding, 1951, Ontario Dept. Mines Ann. Kept., v. 59, pt. 4, p. 19-22.

Vermilion-Centrefire Lakes volcanics 

Precambrian: Ontario, Canada. 

W. D. Harding, 1951, Ontario Dept. Mines Ann. Rept., v. 59, pt. 4, p. 16-17.

Vermont quartz diorite \

Pre-Cretaceous(?) : California.

G. J. Neuerburg, 1953, Calif. Dept. Nat. Res., Div. Mines Special Rept. 33, p. 7 (table 

1), 10-11, pi. 1. I

Vermont sequence |

Middle Ordovician to Up|per Devonian: Vermont.

W. S. White and R. H. Jahjns, 1950, Jour. Geology, v. 58, no. 3, p. 182, 191-192, fig. 2.

Verne cyclical formation (including Verne limestone or shale member) 

Lower Pennsylvanian: Michigan.

W. A. Kelly, 1936, Mich. Kept. Conserv. Geol. Survey Div. Pub. 40, Geol. Ser. 34, pt. 

2, p. 159, 166, 177, 190. ]

Verneuil granite i

Precambrian: Quebec, Canada.

P. E. Imbault, 1951, Quebec! Dept. Mines Prelim. Rept. 250, p. 7. 

S. W. Holmes, 1952, Quebec! Dept. Mines Prelim. Rept. 271, p. 2, 6.
384 GEOLOGIC NAMES OF NORTH AMERICA

Veronica [formation]

Miocene: Istmo de Tehuantepec, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomo 9, no. 5, correlation chart.

~Verulam formation

jOrdovician: Ontario, Canada.

^. A. Liberty, 1955, Geol. Assoc. Canada Proc., v. 7, pt, 1, p. 144.

"Via formation

Miocene, upper: Dominican Republic.

W. M. Small, 1948, Seismol. Soc. America Bull., v. 38, no. 1, p. 26.

P. J. Bermudez, 1949, Cushman Lab. Foram. Research Special Pub. 25, p. 31,

Yick formation

Lower Cretaceous: Alabama.

L. C. Conant, 1946, Am. Assoc. Petroleum Geologists Bull., v. 30, no. 5, p. 711.

Victoria gabbroic anorthosite

Precambrian: Ontario, Canada.

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.

Victoria River series

Pre-Devonian: Newfoundland, Canada.

N. B. Brown, 1953 (abs.) Canadian Mining Jour., v. 74, no. 6, p. 98.

"Victorville quartz monzonite 

Upper Jurassic: California. 

W. J. Miller, 1944, Calif. Jour. Mines and Geology, v. 40, no. 1, p. 105-106.

Victory member (of Grand Detour formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., fig. 3.

Viesca member (of Wecb.es formation) 

jEocene, middle (Claiborne) : Texas. 

^JB. B. Stenzel, 1938, Tex. Univ. Bur. Bcon. Geol. Pub. 3818, p. 20, 97, 104-107 [1939].

"View Creek group

Permian or older: Northwest Territories (Ellesmere Island), Canada. 

B. G. Blackadar, 1954, Canada Geol. Survey Paper 53-10, p. 12-13.

Vigo limestone member (of Shelburn formation) 

Pennsylvanian: Indiana.

C. B. Wier, 1952, Ind. Geol. Survey Prelim. Coal Map 1. 

Courtney Waddell, 1954, U. S. Geol. Survey Coal Inv. Map C 17.

Viking sand or sandstone

Cretaceous: Alberta, Canada (subsurface).

S. B. Slipper in D. B. Bowling, S. E. Slipper, and F. H. McLearn, 1919, Canada Geol.

Survey Mem. 116, p. 24. 

D. B. Layer, 1949, Am. Assoc. Petroleum Geologists Bull., v. 33, no. 4, p. 575, 578-579.

Vildtal series

Middle Devonian: Northeast Greenland.

Heinrich Butler, 1954, Meddel. om Gr0nland, bind 116, nr. 7, p. 28-29, 31-33, 57-58, 

65-69, 83-84, 108, 110-111.

Ville Guay conglomerate

Lower Ordovician : Quebec, Canada.

Franco Rasetti, 1946, Geol. Soc. America Bull., v. 57, no. 7, p. 700.
I GEOLOGIC NAMES OF NCfRTH AMERICA INTRODUCED IN 1936-1955 385

I 

Vine Hill sandstone j

Paleocene: Calif orniaj

C. E. Weaver, 1953, Was|h. [State] Univ. Pubs, in Geology, v. 7, p. 19 (chart), 21-30.

Vinini formation j

Lower and Middle Ordjovician: Nevada.

C. W. Merrian and C. AL Anderson, 1941 (abs.) Geol. Soc. America Bull., v. 52, no. 

12, pt. 2, p. 1953; 1942, v. 53, no. 12, pt. 1, p. 1693-1698.

Violin breccia

Miocene to Pliocene: California.

J. C. Crowell, 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 170, map sheet 7.

Vipont limestone

Carboniferous (?) : Utah.

V. E. Peterson, 1942, Ec<jm. Geology, v. 37, no. 6, p. 471 (table 1).

Virgin Creek member (of Pierre shale) 

Upper Cretaceous: South Dakota. 

W. V. Searight, 1937, S. I^ak. State Geol. Survey Rept. Inv. 27, p. 35-43, pi. 3.

Virginian Ridge formation!

Lower and Middle Cretaceous: Washington.

J. D. Barksdale, 1948, Northwest Science, v. 22, no. 4, p. 165,169-171.

i

Virgin Spring phase (of Anjargosa choas) 

Post-Miocene(?) : California.

L. F. Noble, 1940, (abs.) Geol. Soc. America Bull., v. 51, no. 12, pt. 2, p. 1936; 

1941, v. 52, no. 7, p. 965L-968.

Vista member (of White River formation) 

Oligocene (Whitneyanj) : Colorado. 

E. C. Galbreath, 1953, Kjans. Univ. Paleont. Contr. 13, Vertebrata, art. 4, p. 15-18.

Vista Bella member (of Mount Moriah group)

Eocene (Jackson) : Trinidad, British West Indies.

H. G. Kugler and others [1939], Geological conference in Trinidad; notes on the 

excursions : Petroleum Assoc. Trinidad, p. 9.

Vitrefrax formation j

Paleozoic or older: California.

P. C. Henshaw, 1942, Calif. Jour. Mines and Geology, v. 38, no. 2, p. 153-155, pi. 2.

Volcano Bay basalt flow 

Quaternary: Alaska.

G. C. Kennedy and H. Hi Waldron, 1947, U. S. Geol. Survey Alaskan Volcano Inr. 

Rept. 2, pt. 2, p. 15, pi. 2J (geol. map).

Volta formation j

Upper Cretaceous: California.

R. D. Reed, 1943, Calif. lj>ept. Nat. Res., Div. Mines Bull. 118, pt. 2, p. 109, table 6 

[preprint 1941], j

Voss shale member (of Belle Plains formation) 

Permian (Leonard? ag£) : Texas.

R. C. Moore in M. G. Che4ey, 1948 Abilene Geol. Soc. [Guidebook] Spring Field Trip,

June 11-12, sheets 3, 4. I 

R. C. Moore, 1949, U. S. <)3eol. Survey Oil and Gas Inv. Prelim. Map 80, sheets 1, 2.
386 GEOLOGIC NAMES OF NORTH AMERICA

Waawaa volcanics

Pleistocene (?): Hawaiian Islands (Hawaii).

C. K. Wentworth, 1038, Hawaiian Volcano Observatory 3d Special Rept, p. 86-87,

145-146. 

H. T. Stearns and G. A. Macdonald, 1946, Hawaii Div. Hydrography Bull. 9, 143-146.

Wabamun formation

Devonian: Alberta, Canada (subsurface).

D. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, 

p. 1810-1813.

Wabigoon volcanics

Preeambrian (Keewatin): Ontario, Canada.

F. J. Pettljohn, 1939, Geol. Soc. America Bull., v. 50, no. 5, p. 764.

Jack Satterly, 1943, Ontario Dept. Mines Ann. Kept., v. 50, pt. 2, p. 26,31.

Wabiskaw member (of Clearwater formation)

Lower Cretaceous: Alberta, Canada (subsurface). 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 6.

Waddell sandstone

Middle Ordovician: Texas (subsurface).

Taylor Cole, C. D. Cordry, and H. A. Hemphlll, 1942, Am. Assoc. Petroleum Geologists 

Bull., v. 26, no. 2, p. 280, 281-282.

Waddy-Contact Lakes granite

Preeambrian: Saskatchewan, Canada.

A. R. Byers, 1949, Saskatchewan Geol. Survey (Precambrian Geology Ser.) Rept. 1, 

p. 14-15.

Wadin group

Devonian (?), Mississippian, and Pennsylvanian(?) : British Columbia,

Canada. 

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Wagonroad stage 

Paleocene: Utah. 

C. L. Gazin, 1941, D. S. Natl. Mus. Proc., v. 91, no. 3121, p. 3-4.

Wagontongue formation

Miocene, upper: Colorado.

J. H. Johnson, 1937, (abs.) Colorado Univ. Studies, v. 25, no. 1, p. 77.

J. T. Stark and others, 1949, Geol. Soc. America Mem. 33, p. 68-69.

Wagwater group

Eocene, lower: Jamaica, British West Indies.

C. A. Matley, 1940, Geol. Soc. London Abs. Proc. 1373, p. 100; 1951, Geology and

physiography of the Kingston district, Jamaica: Inst. of Jamaica, p. 31, 56, geoL

map.

Wahluke formation

Pleistocene: Washington.

G. F. Beck, 1936, Mineralogist, v. 4, no. 11, p. 12,14.

Wahwah limestone

Lower Ordovician (Canadian) : Utah and Nevada.

L. F. Hintze, 1951, Utah Geol. Mineralog. Survey Bull. 39, p. 16-17.

Waiaaka basaltic andesite

Pleistocene (?): Hawaiian Islands (Maui).

G. A. Macdonald in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 231, 243-244.
!

GEOLOGIC NAMES OF NOpTH AMERICA INTRODUCED IN 1936-1955 387

Waiau formation \

[Quaternary]: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1938, ^awaiian Volcano Observatory 3d Special Kept., p. 36, 57-86.

Waihu fanglomerate : Pleistocene: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1939, (Rbs.) Geol. Soc. America Bull., v. 50, no. 12, pt. 2, p. 1942,

H. T. Stearns, 1945, Geol. Boc. America Bull., v. 56, no. 3, p. 270-273.

Wailuanui basalt ;

Pleistocene (?): Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stjearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 94, 95. i

Wailuku volcanic series j

Pliocene (?) : Hawaiian Islands (Maui).

H. T. Stearns in H. T. Slfearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 159, 160-172L

Waimea conglomerate |

Age unknown: Hawaiian Islands (Kauai).

N. B. A. Hinds, 1930, Benjdce P. Bishop Mus. Bull. 71, p. 56, 65.

| Waimea formation I

[Quaternary]: Hawaiian Islands (Hawaii).

C. K. Wentworth, 1938, Pawaiian Volcano Observatory 3d Special Kept., p. 38-40.

Waimea volcanic series j

See Waimea Canyon vjolcanic series.

Waimea Canyon volcanic ^eries

Pliocene (?) : Hawaiian Islands (Kauai).

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 85-89.

G. A. Macdonald, 1949, Geol. Soc. America Bull., v. 60, no. 10, p. 1555, 1557.

Waiokamilo basalt !

Pleistocene(?): Hawaiian Islands (Maui).

H. T. Stearns in H. T. Stearns and G. A. Macdonald, 1942, Hawaii Div. Hydrography 

Bull. 7, p. 95, 96. !

Wakefield marble ;

Precambrian( ?) : Maryland and Pennsylvania.

A. I. Jonas and G. W. Stj^se, 1938, Washington Acad. Sci. Jour., v. 28, no. 8, p. 346-

Walden Hollow glacial sta&e 

Pleistocene: Colorado.; 

B. L. Ives, 1942, Geog. Review, v. 32, no. 3, p. 450.

Walderston limestone meiqber (of White Limestone formation) 

Oligocene, upper : Jamaica, British. West Indies.

V. A. Zans, H. R. Versey, and J. B. E. Williams in V. A. Zans, 1955, Jamaica GeoL 

Survey Dept. Ann. Kept. 1953-54, p. 4.

Waldo granite j

Devonian or Carboniferous: Maine.

J. M. Trefethen, 1941, (£ibs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 2020.

Walgreen member (of Grand Detour formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. JB. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., fig. 3. |
388 GEOLOGIC NAMES OF NORTH AMERICA

Walhalla formation

Precambrian (Kwaguntan) : Arizona.

Charles Keyes, 1938, Pan-Am. Geologist, v. 70, no. 2, p. 107, 114.

Walker group

Lower and Middle Ordovician: British Columbia, Canada. 

H. Gabrielse, 1955, Canada Geol. Survey Paper (Prelim. Map) 54-10.

Walker Plain basalt

Miocene: California.

Anna Hietanen, 1951, Geol. Soc. America Bull., v. 62, no. 6, p. 586-587, pi. 1.

Walkers beds (in Scotland formation)

Eocene, lower: Barbados, British West Indies.

Alfred Senn, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 9, p. 1552-1553.

Wall member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 24, figs. 3, 12.

Wallace group

Mesozoic and Carboniferous (?) : British Columbia, Canada. 

Leopold Reinecke, 1915, Canada Geol. Survey Mem. 79, p. 33-34.

Wallace shale

Cretaceous (Cretacic) : Kansas.

[C. R.] Keyes, 1941, Pan-Am. Geologist, v. 76, no. 5, p. 374-376.

Wallace Lake granite

Precambrian: Manitoba, Canada.

G. A. Russell, 1948, Manitoba Dept. Mines and Nat. Res. Prelim. Rept. 47-1, p. 5-6.

Wallace Ledge formation

Lower Cambrian: Vermont.

B. P. Kaiser, 1945, Geol. Soc. America Bull., v. 56, no. 12, pt. 1, p. 1089.

Walston silt

Pleistocene (Yarmouth) : Maryland.

W. C. Rasmussen and T. H. Slaughter, 1955, Md. Dept. Geology, Mines and Water Res. 

Bull. 16, p. 114-117.

Walter Johnson sandstone member (of Nowata shale)

Pennsylvanian (Des Moines) : Kansas, Missouri, and Oklahoma. 

J. M. Jewett, 1941, Kans. State Geol. Survey Bull. 38, pt. 11, p. 292, 335.

Wamego shale

Pennsylvanian: Kansas.

G. B. Condra and B. C. Reed, 1943, Nebr. Geol. Survey Bull. 14, p. 42, 43, 44.

Wandel Valley limestone

Lower Ordovician (Canadian) : North Greenland.

J. C. Troelsen, 1949, Meddel. om Gr0nland, bind 149, nr. 2, p. 15-18, pi. 1.

Wanette division

Permian: Oklahoma and Kansas.

D. A. Green, 1937, Am. Assoc. Petroleum Geologists Bull., v. 21, no. 12, p. 1518-1521.

Wanipigow diorite

Precambrian: Manitoba, Canada.

G. A. Russell, 1948, Manitoba Dept. Mines and Nat. Res. Prelim. Rept. 47-1, p. 8.
GEOLOGIC NAMES OF N(fRTH AMERICA INTRODUCED IN 1936-1955 389

Wanship formation | 

Upper Cretaceous: Utjah. 

A. J. Eardley, 1952, Utah| Geol. Soc. Guidebook 8, p. 53-54.

Waramaug formation j

Precambrian(?) : Connecticut.

R. M. Gates w R. M. Gatles amd W. C. Bradley, 1952, Conn. Geol. Nat. History Survey 

Misc. Ser. 5, p. 8-14. '

Ward Cove limestone member (of Climeld formation) 

Middle Ordovician: Virginia. 

B. N. Cooper and C. B. Ejrouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 863.

Wardell formation ;

Middle Ordovician: Virginia.

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 873-875.

Warden-Munroe complex j

Precambrian: Ontarioj Canada,

Jack Satterly, 1952, Ontajrio Dept. Mines Ann. Rept., v. 60, pt. 8, p. 17.

Wardlaw shale ] 

Carboniferous (?) : Uiiah.

V. E. Peterson, 1942, Eco^i. Geology, v. 37, no. 6, p. 471 (table 1).

I Wareham Lake series j

Precambrian: Quebec, j Canada.

Jacques Claveau, 1949, Quebec Dept. Mines Geol. Rept. 37, p. 24, 25.

Warman quartz monzonite

Precambrian (Algomam) : Minnesota.

M. S. Woyski, 1949, Geoli Soc. America Bull., v. 60, no. 6, p. 1002, 1011, pi. 1.

Warmington limestone member (of Elephant Butte formation) 

Pennsylvanian (DesIMfoines) : New Mexico.

M. L. Thompson, 1942, If. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 49. i

Warm Springs formation j 

Middle Jurassic: Oregon. 

R. L. Lupher, 1941, Geol. |Soc. Amerca Bull., v. 52, no. 2, p. 227, 249.

Warrens Ranch latite

Tertiary: Arizona. j

W. H. Brown, 1939, Geol.j Soc. Amerca Bull., v. 50, no. 5, p. 742.

Warrenton agglomerate member (of Catoctin series)^ 

Precambrian: Virginik. 

A. S. Furcron, 1939, Va. Geol. Survey Bull. 54, p. 20-22.

Warwick eolianite |

Pleistocene: Bermudaj Islands.

R. W. Sayles, 1931, Am. Acad. Arts and Sci. Proc., v. 66, no. 11, p. 395.

Wasatchian age j 

Eocene: North America. 

H. E. Wood, 2d, and others. 1941. Geol. Soc. America Bull., v. 52, no. 1. p. 9, 10, pi. 1.

Wasekwan series |

Precambrian: Manitoba, Canada.

J D. Bateman. 1942. Amj Jour. Sci.. v. 240. no. 11. j>. 789-808.
390 GEOLOGIC NAMES OF NORTH AMERICA

Washikemba formation

Cretaceous: Bonaire, Netherlands West Indies.

P. J. Pijpers, 1931, Leidsche Geol. Meded., Deel 5, p. 704-705.

Waskada formation

Upper Jurassic: Manitoba, Canada; and North Dakota.

D. F. Stott, 1955, Manitoba Dept. Mines and Nat. Res. Pub. 54-2, p. 26-27, 38, 47-48.

Waswanipi granite

Precambrian: Quebec, Canada.

J. B. Gilbert, 1947, Quebec Dept. Mines Prelim. Kept. 210, p. 6.

Watchorn formation

Mississippian (Meramecgroup) : Kansas (subsurface). 

Wallace Lee, 1940, Kans. State Geol. Survey Bull. 33, p. 84-89.

Waterboot basalt

Tertiary: Alaska.

W. M. Cady and others, 1955, U. S. Geol. Survey Prof. Paper 268, p. 55-56v

Water Canyon formation

Lower Devonian: Utah and Idaho.

J. S. Williams, 1948, Geol. Soc. America Bull., v. 59, no. 11, p. 1138-1139.

Watering Trough shale

Upper Devonian (Conewango): Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Kept. 126, p. 11 (footnote)'.

Waterloo lava

Devonian or younger: Quebec, Canada.

H. C. Cooke, 1950, Canada Geol. Survey Mem. 257, p. 93.

Waterman gneiss

Upper Paleozoic (?): California.

O. E. Bowen, Jr., 1954, Calif. Dept. Nat. Res., Div. Mines Bull. 165, p. 16 (fig. 2>, 

17-23.

Waterways formation

Upper Devonian: Alberta, Canada.

P. S. Warren, 1933, Canadian Field Naturalist, v. 47, no. 8, p. 149.

Watrous formation

Jurassic: Saskatchewan, Canada (subsurface).

R. L. Milner and G. E. Thomas, 1954, Western Canada sedimentary basin : Tulsa, 

Okla., Am. Assoc. Petroleum Geologists, p. 255-257.

Watson Ledge quartz syenite

Carboniferous (?) (White Mountain magma series) : New Hampshire. 

Alonzo Quinn, 1937, Geol. Soc. America Bull., v. 48, no. S, p. 388.

Watt Mountain formation

Devonian: Alberta, Canada (subsurface).

J. Law, 1955, Alberta Soc. Petroleum Geologists Jour., v. 3, no. 6, p. 82-83.

Wauwatosa formation 

Silurian: Wisconsin. 

F. B. Phleger, Jr., 1937, Harvard Coll. Mus. Comp. Zool. Bull., v. 80, no. 11, p. 420.

Wearyman dolomite member (of Minturn formation) 

Pennsylvanian: Colorado. 

Ogden Tweto, 1949, Colo. Sci. Soc. Proc., v. 15, no. 4, p. 152, 198-199.
GEOLOGIC NAMES OP NORTH AMERICA INTRODUCED IN 1936-1955 391

I

Weberg formation | 

Middle Jurassic: Oregon. 

R. L. Lupher, 1941, Ge<il. Soc. America Bull., v. £2, no. 2, p. 227, 248.

Weedon granite and aplifcs

Devonian (?) : Quebec, Canada.

J. E. Hawley and others, 1945, Canadian Inst. Mining and Metallurgy Trans., v. 48, 

p. 372 (geol. map), 37& (table).

Weedon porphyry |

Pre-Ordovician(?) : (Juebec, Canada. i 

G. V. Douglas, 1941, Quebec Dept. Mines Geol. Rept. 8, p. 17, 18.

Weir cyclothem or formation

Pennsylvanian (Des Moines) : Kansas.

G. E. Abernathy, 1937, ^ans. Geol. Soc. Guidebook llth Ann. Field Conf., p. 18, 20, 22; 

1938, Kans. Acad. Scii Trans., v. 41, p. 193, 195.

Weissport member (of Tully formation) 

Upper Devonian: Pennsylvania. 

B. E. Stevenson and W.I S. Skinner, 1949, Pa. Acad. Sci. Proc., v. 23, p. 30.

Wekuskoan group : Precambrian: Manitoba, Canada.

J. F. Wright, 1931, Canada Geol. Survey Summ. Bept. 1930, pt. C, p. 8.

Welcome formation : Eocene, upper: California.

Martin Van Couvering Ind H. B. Alien, 1943, Calif. Dept. Nat. Res., Div. Mines Bull., 

118, pt. 3, p. 496-500^

Weldonian stage j

Late Cretaceous: California.

P. P. Goudkoff, 1945, Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, p. 990-991.

Welge sandstone membeir (of Wilberns formation) 

Upper Cambrian: Te^as.

Frederick Romberg and V. E. Barnes, 1944, Geophysics, v. 9, no. 1, p. 88. 

P. E. Cloud, Jr., V. E. ^arnes, and Josiah Bridge 1946, Tex. Univ. Bur. Econ. Geology 

Pub. 4301, p. 155 [19£5].

WeUmans Cove diorite i

Ordovician(?) : Newfoundland, Canada.

G. H. Espenshade, 1937J Newfoundland Geol. Survey Bull. 6, p. 25.

Wellsville formation j

Upper Devonian : Nejv York.

J. G. Woodruff, 1942, Nj Y. State Mus. Bull. 326, p. 31-33.

Wemir agglomerate j

Age not stated: Panama Canal Zone.

[T. F. Thompson], 1943, Panama Canal, Special Eng. Div., 3d Locks Proj., pt. 2, chap. 

5, p. 37.

Wendover group

Pennsylvanian: Wyojming and Colorado.

G. E. Condra, E. C. Rejed, and O. J. Scherer, 1940, Nebr. Geol. Survey BulL 13, p. 2, 

3-4, 22, 45. |
392 GEOLOGIC NAMES OF NORTH AMERICA

Werner formation

Permian: Subsurface in Arkansas and Louisiana.

R. T. Hazzard, B. W. Blanpied, and W. C. Spooner, [1947], Shreveport Geol. Soc. 1945 

Ref. Kept., v. 2, p. 484, 486, 487.

Wesley formation

Pennsylvanian (Bendian) : Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854, 

886-893.

Wesson tongue (of Dorcheat member of Schuler formation)

Upper Jurassic: Subsurface in Arkansas, Louisiana, and Texas.

F. M. Swain, 1944, Am. Assoc. Petroleum. Geologists Bull., v. 28, no. 5, p. 608-609.

West Bay formation

Pennsylvanian: Nova Scotia, Canada.

G. W. H. Norman, 1935, Canada Geol. Survey Mem. 177, p. 45.

West Beach formation

Mississippian and/or Pennsylvanian: New Brunswick, Canada. 

F. J. Alcock [1938], Canada Geol. Survey Mem. 216, p. 33-35.

Westendspids pelitic group

Precambrian: Northeast Greenland.

G. P. Leedal, 1952, Meddel. om Gr0nland, bind 142, nr. 6, p. 11, 18, pi. 2.

Western Arm basalts or group

Lower Ordovician: Newfoundland, Canada.

H. J. MacLean in G. V. Douglas and others, 1940, Newfoundland Geol. Survey Bull..

20, p. 69. 

H. J. MacLean, 1947, Newfoundland Geol. Survey Bull. 22, p. 17.

Western Brook Pond group

Lower Ordovician: Newfoundland, Canada.

Frederick Betz, Jr., 1939, Newfoundland Geol. Survey Bull. 16, p. 24 (table 3). 

Helgi Johnson, 1941, N. Y. Acad. Sci. Trans., ser. 2, v. 3, no. 6, p. 143.

Western Cascade volcanic series

Eocene, upper, to Miocene, upper: Oregon.

Howel Williams, 1942, Carnegie Inst. Washington Pub. 540, p. 13-15.

West Fairview member (of Martinsburg shale) 

Ordovician: Pennsylvania. 

Bradford Willard and A. B. Cleaves, 1938, Pa. Geol. Surrey, ser. 4, Bull. G 8, p. 5, 6.

Westford schist

Precambrian: Vermont.

E. C. Jacobs, [1939], Vt. State Geologist 21st Kept., p. 33-35.

West Gull jasper facies (of Ogishke conglomerate) 

Precambrian (Knife Lake) : Minnesota.

J. T. Stark and V. G. Sleight, 1939, Geol. Soc. America Bull., v. 50, no. 7, p. 1032: 

(table 2), 1034-1035.

West Molokai volcanic series

Pliocene: Hawaiian Islands (Molokai).

H. T. Stearns, 1946, Hawaii Div. Hydrography Bull. 8, p. 69, 71.

Westmore formation

Silurian or Lower Devonian : Vermont and Quebec, Canada. 

C. G. Doll, 1951, Vt. Geol. Survey Bull. 3, p. 15, 33-37.
I

GEOLOGIC NAMES OF NO|RTH AMERICA INTRODUCED IN 1936-1955 393

Westmoreland member (oi Clinton formation) 

Middle Silurian (Nia^aran) : New York.

Tracy Gillette, 1947, N. i. State Mus. Bull. 341, p. 90, 93-94. 

Philip Donnerstag, 1950, JN. Y. State Mus. Circ. 28, p. 7.

Westmoreland shale

Lower Mississippian: jTennessee.

Guy Campbell, 1946, GeolL <Soc. America Bull., v. 57, no. 9, p. 885.

Westphalia schists j

Pre-Mesozoic: Jamaica, British West Indies.

C. A. Matley, 1929, Geol. jSoc. London Quart. Jour., v. 85, pt. 4, p. 455.

Westpuntbaai conglomerate

Recent (Holocene) : Cbragao, Netherlands West Indies.

G. J. H. Molengraaff, 1929, Geologic en geohydrologie van net Eiland Curasao: Delft, 

J. Waltman, Jr., p. 30, J92, strat. table.

West Ridge group ! 

Age unknown: California. 

K. J. Hsu, 1955, Calif. TJJniv. Dept. Geol. Sci. Bull., v. 30, no. 4, p. 275, map 1.

West Spring formation I

Pliocene, lower to midjlle: Utah.

Neal Smith, 1953, Interinountain Assoc. Petroleum Geologists 4th Ann. Field Conf.,. 

p. 73, 75. |

West Union gravel | 

Pleistocene: Minnesotja.

Kirk Bryan, Henry Retzek, and F. T. McCann, 1938, Tex. Archeol. Paleont. Soc. BulL 

10, p. 125. |

Weybridge member (of Beldens formation) 

Middle Ordovician (Chazyan) : Vermont. 

W. M. Cady, 1945, Geol.j Soc. America Bull., v. 56, no. 5, p. 524, 550-552.

Wheatland formation

Pleistocene, upper: New Mexico.

Sheldon Judson, 1950, Geol. Soc. America Bull., v. 61, no. 3, p. 263; 1953, Smithsonian Misc. Coll., v. 11J1, no. 1, p. 22-23, 30.

Wheatland formation

Eocene, upper: California.

B. L. Clark and C. Aj Anderson, 1937. (abs.) Geol. Soc. America Proc. 1936, 

p. 326-327. I

| Wheeler sandstone member (of Juncal formation) 

Eocene, middle: California. 

T. L. Bailey, 1947, Ami Assoc. Petroleum Geologists Bull., v. 31, no. 11, p. 1920

(fig. 3). | 

W. R. Merrill, 1952, in AAPG, SEPM, SEG, Joint Ann. Meeting Guidebook, p. 77.

Wheelerian stage J 

Pliocene: California. 

Manley Natland, 1953, Pacific Petroleum Geologist, v. 7, no. 2, p. 2.

Wheelock marl member (of Crockett formation) 

Eocene, middle (Claitforne) : Texas. 

H. B. Stenzel, 1938, Te|. Univ. Bur. Econ. Geol. Pub. 3818, p. 20, 125-134 [1939].
,394 GEOLOGIC NAMES OF NORTH AMERICA

Whetstone Creek shale member (of Breathitt formation) 

Pennsylvanian: Kentucky. 

H. R. Wanless, 1946, Geol. 'Soc. America Mem. 13, p. 64, 65, 76, 153.

Whetstone Hill member (of Moretown formation) 

Cambro-Ordovician: Vermont. 

W. F. Brace, 1953, Vt. Geol. Survey Bull. 6, p. 51.

Whetstonian series

Paleozoic (Mid-Cambric) : Arizona and New Mexico.

Charles Keyes, 1940, Pan-Am. Geologist, v. 74, no. 2, p. 107, 120.

Whim Hill breccia

Cretaceous: New Mexico.

P. F. Kerr and others, 1950, Geol. Soc. America Bull., v. 61, no. 4, p. 289-291, fig. 3, 

pi. 1.

Whipple member (of Berkshire schist)

Middle Ordovician: Vermont and Massachusetts. 

Phillip Fowler, 1950, Vt. Geol. Survey Bull. 2, p. 13, 32-34.

Whiskey Canyon limestone

Pennsylvanian (DesMoines) : New Mexico.

M. L. Thompson, 1942, N. Mex. State Bur. Mines Min. Res. Bull. 17, p. 27, 50.

Whiskey Creek Pass limestone member (of Madera formation) 

Pennsylvanian (Desmoinesian) : Colorado and New Mexico. 

K. G. Brill, Jr., 1952, Geol. Soc. America Bull., v. 63, no. 8, p. 819, 828, pi. 1.

Whiskey Mountain granodiorite 

Mesozoic: Washington. 

A. C. Waters and Konrad Krauskopf, 1941, Geol. Soc. America Bull., v. 52, no. 9, pi. 1.

Whistle Creek limestone

Middle Ordovician: Virginia.

B. N. Cooper and G. A. Cooper, 1946, Geol. Soc. America Bull., v. 57, no. 1, p. 74.

Whistler Mountain alaskite

Post-Mississippian: Nevada.

C. W. Merriam, 1940, Geol. Soc. America Special Paper 25, p. 29, 44, fig. 2.

Whitby group

Ordovician: Ontario, Canada (subsurface).

B. A. Liberty, 1955, Geol. Assoc. Canada Proc., v. 7, pt. 1, p. 145.

White Bay group

Age unknown: Newfoundland, Canada.

Frederick Beta, Jr., 1948, Newfoundland Geol. Survey Bull. 24, p. 7-8.

JVhitefield gneiss

Middle or Upper Devonian (?) (Oliverian plutonic series) : New Hampshire. 

M. P. Billings, 1955, Geologic map of New Hampshire (1 : 250,000) : U. S. Geol. Survey.

Whiteflsh Bay member (of Alpena limestone stage) 

Middle Devonian: Michigan. 

W. A. Kelly, 1940, Mich. Acad. Sci. Arts and Letters Sec. Geology and Mineralogy

[Guide Book] 10th Ann. Field Excursion, [p. 13, columnar sec.] 

Charles Schuchert, [1943], Stratigraphy of the eastern and central United States:

New York, John Wiley & Sons, p. 606 (chart 48), 613.
GEOLOGIC NAMES OF NOEffH AMERICA INTRODUCED IN 1936-1955 395

Whitehall formation i

Lower Ordovician: New lYork and Vermont.

John Rodgers, 1937, Geol. $oc. America Bull., v. 48, no. 11, p. 1576-1577,1578.

Whitehorse member (of Sprsly River formation) 

Middle Triassic: British! Columbia. 

P. S. Warren, 1945, Am. Jopr. Sci., v. 243, no. 9, p. 482-483.

White Lake formation [

Tertiary: British Columbia, Canada.

H. S. Bostock, 1941, Canatty Geol. Survey Map 627A.

White Lake granite j

Precambrian: Saskatchewan, Canada.

W. E. Hale, 1953, Canadiaiji Mining Jour., v. 74, no. 10, p. 106; 1954, Canada Geol. 

Survey Paper 53-15, p. 3 |(table), 8-9, geol. map.

White Lake syenite I

Precambrian: Ontario, Canada.

W. D. Harding, 1951, Ontario Dept. Mines Ann. Kept, v. 56, pt. 6, p. 29-30.

__ ! White Limestone basement \

Eocene, middle or upper ^ Jamaica, British West Indies.

C. A, Matley, 1940, Geol. s|oc. London Abs. Proc. 1373, p. 101; 1951, Geology and 

physiography of the Kingston district, Jamaica: Inst. of Jamaica, p. 35-36, geol. 

map.

White Limestone formation

Eocene, middle, to Miocefae, lower: Jamaica, British West Indies. 

H. T. De la Beche, 1827, Gejol. Soc. London Trans., 2d ser., v. 2, pt. 2, p. 169. 

C. A. Matley, 1951, Geology land Physiography of the Kingston district, Jamaica : Inst. 

of Jamaica, p. 36-39, 57-59, geol. map.

Whitemans Creek granite - 

Cretaceous or Tertiary: pritish Columbia, Canada. 

1948, Canada Geol. Surrey ijrtap 932A.

White Quail limestone member (of Minturn formation'} 

Pennsylvanian and Permfan (?) : Colorado.

S. P. Emmons, 1898, U. S. Gfcol. Survey Geol. Atlas, Folio 48, p. 4. 

Ogden Tweto, 1949, Colo. Sc}. Soc. Proc., v. 15, no. 4, p. 203-204.

White Ridge quartzite j 

Precambrian: New Mexico.

J. T. Stark and E. C. Dappleis, 1941, (abs) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, 

p. 1936; 1946, v. 57, no.|l2, pt. 1, p. 1133-1134.

Whites Creek beds member (o|f Shoal River formation) 

Miocene, middle: Florida^ 

E. H. Smith, 1941, Am. Asscic. Petroleum Geologists Bull., v. 25, no. 2, p. 275.

Whites Crossing coquina memjber (of Chappel formation) 

Mississippian: Texas. F. B. Plummer, 1950," T«x. Ufciiv. Bur. Econ. Geology Pub. 4329, p. 28.

Whitesville formation j 

Upper Devonian: New York. 

J. G. Woodruff, 1942, N. Y. State Mus. Bull. 326, p. 37-42.

426779 57 26
396 GEOLOGIC NAMES OF NORTH AMERICA

White Tank monzonite

Jurassic (?): California.

W. J. Miller, 1938, GeoL Soc. America Bull., v. 49, no. 3, p. 419, 438-443.

White Wall formation

Pleistocene, upper (?) : St. Eustatius, Netherlands West Indies.

G. A. F. Molengraaf, 1931, Leidsche Geol. Meded., Deel 5, p. 719 (fig. 3), 726, 728.

Whitewater limestone

Triassic: British Columbia, Canada.

M. S. Hedley, 1947, British Columbia Dept. Mines Bull. 22, p. 9.

Whiteway formation

Precambrian (Upper Proterozoic): Newfoundland, Canada. 

B. D. Hutchinson, 1954, Canada Geol. Survey Mem. 275, p. 17-18.

Whitney member (of Ernie formation) 

Oligocene: Nebraska.

C. B. Schultz and T. M. Stout, 1938 (abs.) Geol. Soc. America Bull., v. 49, no. 12, pt 2, 

p. 1921; 1955, Nebr. Univ. State Mus. Bull., v. 4, no. 2, p. 44-46.

Whitneyan age

Oligocene: North America.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. &2, no. 1, p. 11, 12, 

pi. 1.

Whitt group

Pennsylvanian (Canyon): Texas.

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 88.

Wiarton member (of Gasport formation)

Middle Silurian (Niagaran) : Ontario, Canada.

E. W. Shaw, 1937, Royal Canadian lust. Trans., v. 21, pt. 2, p. 320.

Wiggins formation

Oligocene: Wyoming.

J. D. Love, 1939, Geol. Soc. America Special Paper 20, p. 79-85.

Wilcox formation

Precambrian: Vermont.

W. F. Brace, 1953, Vt. Geol. Survey Bull. 6, p. 21-22, 29.

Wild Bight volcanics

Middle Ordovician(?): Newfoundland, Canada.

G. H. Espenshade, 1937, Newfoundland Geol. Survey Bull. 6, p. 7.

Wildcat Creek shale member (of Admiral formation) 

Permian (Wolfcamp age): Texas. 

R. C. Moore in A, K. Miller and Walter Youngquist, 1947, Kans. Univ. Paleont. Contr. 2,

Mollusca, art. 1, p. 1 (footnote). 

A. K. Miller and Walter Youngquist, 1949, Geol. Soc. America Mem. 41, p. 4, 5, 6, 22.

Wildhorse Mountain formation

Pennsylvanian (Bendian): Oklahoma.

B. H. Harlton, 1938, Am. Assoc. Petroleum Geologists Bull., v. 22, no. 7, p. 854, 

878-880.

Wileman member (of Mount Head formation) . . 

Carboniferous: Alberta, Canada.

R. J. W. Douglas, 1953, Alberta Soc. Petroleum Geologists 3d Ann. Field Oonf. and 

Symposium, p. 68.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED tN 19 3 6-1955 397

Wilkinson anorthosite

Precambrian: Ontario, Canada.

J. M. Harrison, 1944, Geol. Soc. America Bull., v. 55, no. 12, p. 1409.

Willamette silt

Pleistocene: Oregon.

R. C. Treasher, 1942, Geologic map of the Portland area, Oregon (1:96,000) : Oreg,

State Dept. Geology and Mineral Res. 

I. S. Allison, 1953, Oreg. Dept. Geology and Mineral Industries Bull. 37, p. 12-13.

Willapa clays

Pleistocene: Washington.

S. L. Glover, 1941, Wash. Dept. Conserv. Devel., Div. Geology Bull. 24, p. 52-53.

William Henry Bay marble 

Lower Paleozoic: Alaska. 

E. C. Robertson, 1955, Geol. Soc. America Bull., v. 66, no. 10, p. 1309.

William Island formation

Upper Devonian: Ontario, Canada.

D. C. McLaren, 1946, Canadian Mining Jour., v. 67, p. 1017.

Williams formation

Upper Cretaceous: California.

W. P. Popenoe, 1937, Jour. Paleontology, v. 11, no. 5, p. 380.

Williams member (of Deese formation)

Pennsylvanian (Des Moines) : Oklahoma.

C. W. Tomlinson, 1937, Ardmore Geol. Soc. [Guidebook] Field Trip, March 13, p. L

Williamson Creek member (of Fleming formation) 

Miocene: Louisiana. 

H. N. Fisk, 1940, La. Dept. Conserv. Geol. Bull. 18, p. 118,161-164.

Williana formation

Pleistocene: Louisiana.

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 78, 155-157.

Williston member (of Moodys Branch formation) 

Eocene (Jackson) : Florida. 

R. O. Vernon, 1951, Fla. Geol. Survey Bull. 33, p. 141-152.

Willow Creek facies (of Flagstaff formation) 

Paleocene, upper: Utah. 

W. N. Gilliland, 1951, Nebr. Univ. Studies, new ser., no. 8, p. 29-30.

Willow Tank formation

Upper Cretaceous: Nevada.

C. R. Longwell, 1949, Geol. Soc. America Bull., v. 60, no. 5, p. 929, 931-932.

Willowvale shale

Middle Silurian (Niagaran) : New York.

Tracy Gillette, 1940, N. Y. State Mus. Bull. 320, p. 22 (fig. 6) ; 1947, Bull. 341, 

p. 94-96, 99.

Willwood formation

Eocene: Wyoming.

H. B. Wood, 2d, and others, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 15, 37. 

F, B. Van Houten, 1944, Geol. Soc. America Bull., v. 55, no. 2, p. 178-191.
398 GEOLOGIC NAMES OF NORTH AMERICA

Wilrich member (of Spirit River formation)

Lower Cretaceous: Alberta, Canada (subsurface). 

P. C. Badgley, 1952, Canada Geol. Survey Paper 52-11, p. 9-.

Wilson granite

Precambrian (post-Keewatin) : Quebec, Canada. 

W..W. Longley, 1946, Quebec Dept. Mines Geol. Kept. 24, p. II,

Wilson Island phase (of Point Lake-Wilson Island group)

Precambrian (Archean?) : Northwest Territories (Mackenzie), Canada:. 

C. H. Stockwell, 1936, Canada Geol. Survey Map 377A.

Wimer School limestone member (of Labette shale) 

Pennsylvanian (Desmoinesian): Oklahoma. 

C. M. Cade, 3d, 1953, Tulsa Geol. Soc. Digest, v. 21, p. 138-139, fig. 2:

Wimsattville formation

Tertiary, lower: New Mexico.

R. M. Hernon, W. R. Jones, and S. L. Moore, 1953, N. Mex. Geol. Soc. Guidebook 4th« 

Field Conf., p. 118 (map), 120.

Windermere series

Precambrian: British Columbia, Canada.

J. P. Walker, 1926, Canada Geol. Survey Mem. 148, p. 13-20.

Wineglass welded tuff 

Quaternary: Oregon. 

Howel Williams, 1942, Carnegie Inst. Washington Pub. 540, p. 60-63.

Wingfield formation

Silurian: Ontario, Canada.

M. Y. Williams, 1936, Canada Geol. Survey Paper (Prelim. Map) 36-21; 1937, Paper37-25, p. 16-17.

Winnemucca formation

Upper Triassic: Nevada.

S. W. Muller, H. G: Ferguson, and R. J. Roberts, 1951, Geology of the Mount Tobin* 

quadrangle, Nevada: U. S. Geol. Survey Geol. Quadrangle Map- [,GQ 7].

Winslow granite

Devonian or younger: Quebec, Canada.

T. H. Clark in H. C. Cooke and T. H. Clark, 1937, Canada Geol. Survey Mem. 211,. 

p. 75.

Winslow member (of Moenkopi formation) 

Lower Triassic: Arizona. 

E. D. McKee, 1951, N. Mex. Geol. Soc. Guidebook 2d Field Conf., p. 86, 87 (fig. 1).

Winsor formation

Upper Jurassic: Utah.

H. B. Gregory, 1948, Geol. Soc. America Bull., v. 59, no. 3, p. 235; 1950, U. S. Geol'- 

Survey Prof. Paper 220, p. 96-98. .

Winterburn formation

Devonian: Alberta, Canada (subsurface).

D. B. Layer, chm., 1950, Am. Assoc. Petroleum Geologists Bull., v. 34, no. 9, p. 1814- 

1816,

Winterport granite type 

Age unknown: Maine. 

J. M. Trefethen, 1941, (abs.) Geol. Soc. America Bull., v. 52, no. 12, pt. 2, p. 2020.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 19 3 6-1955 399

Winthrop phyllite 

Silurian: Maine. 

L. W. Fisher, 1941, Geol. Soc. America Bull., v. 52, no. 1, p. 130, table 1.

Wiota gravels

Pleistocene(?): Montana.

B. B. Colton, 1955, U. S. Geol. Survey Geol. Quadrangle Map GQ 67.

Wise Lake formation

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 6, fig. 3.

Wisenor formation

Lower Cretaceous: California.

L. I. Briggs, Jr., 1953, Calif. Dept. Nat. Ees., Div. Mines Bull. 167, p. 12 (fig. 2), 

20-22, pi. 1.

Wishart quartzite

Precambrian (Proterozoic) : Quebec and Newfoundland (Labrador),Canada. 

H. E. Rice, 1949, Canadian Mining Jour., v. 70, no. 9, p. 71-72. 

J. M. Harrison, 1952, Canada Geol. Survey Paper 52-20, p. 9-10.

Wishbone formation

Paleocene(?) or lower Eocene (?) : Alaska.

T. G. Payne, 1955, U. S. Geol. Survey Misc. Geol. Inv. Map 1-84.

Wiskanian series

Cretaceous (Cretacic): Colorado and Kansas.

[C. E.] Keyes, 1941, Pan-Am. Geologist, v. 75, no. 5, p. 369-371.

Witten limestone

Middle Ordovician: Virginia.

B. N. Cooper and C. E. Prouty, 1943, Geol. Soc. America Bull., v. 54, no. 6, p. 877-879.

Wolf Creek formation

Triassic(?) : British Columbia, Canada.

Victor Dolmage, J.934, Canada Geol. Survey Mem. 171, p. 10-11.

Wolf Hollow limestone member (of Tribes Hill formation) 

Lower Ordovician (lower Canadian) : New York. 

D. W. Fisher, 1954, Geol. Soc. America Bull., v. 65, no. 1, p. 76 (fig. 2), 87-88.

Wolfskill formation

Pliocene: Califbrnia.

C. BJ. Weaver, 1949, Geol. Soc. America Mem. 35, p. 16 (table 3), 94-97.

Wolstenholme quartzite

Precambrian (Upper Algonkian) : North Greenland.

V. E. Kurtz and p. B. Wales, 1950, Okla. Acad. Sd. Proc., v. 31, p. 83, 85.

Wolverine complex

Precambrian (?) and younger: British Columbia, Canada.

J. E. Armstrong and 3". B. Thurber, 1945, Canada Geol. Survey Paper 45-9, p. 5-6.

Wolverine Canyon limestone member (of Preuss sandstone) 

Upper Jurassic: Idaho. 

B. W. Imlay, 1992, Am. Assoc. Petroleum Geologists Bull., v. 36, no. 9, p. 1741-1743.
400 GEOLOGIC NAMES OF NORTH AMERICA

Woodbend formation

Devonian: Alberta, Canada (subsurface).

D. B. Layer, ehm., 1950, Am. AssoC. Petroleum Geologists Bull., V. 34, no. 9, p. 1816- 

1823.

Woodbury cyclothem (including Woodbury limestone) 

Pennsylvanian: Illinois. 

W. A. Newton and J. M. Weller, 1937, 111. State Geol. Survey Kept. Inv. 45, p. 28-30.

Woodford limestone member (of Wagwater group) 

Eocene, lower: Jamaica, British West Indies. 

L. J. Chubb, 1953, Colonial Geology and Min. Res., v. 3, no. 2, p. 128, 129.

Woodglen limestone

Permian: Pennsylvania.

W. O. Hickok, IV, and F. T. Moyer, 1940, Pa. Geol. Survey, ser. 4, Bull. C 26, p. 147- 

148.

Woodhill member (of Franconia formation)

Upper Cambrian: Wisconsin and Minnesota. 

R. R. Berg, 1951, Minn. Geologist, v. 8, no. 4, p. [1].

Woodland gneiss

Precambrian: Georgia.

D. F. Hewett and G. W. Crlckmay, 1937, U. S. Geol. Survey Water-Supply Paper 819, 

p. 29-30.

Wood Siding formation

Pennsylvanian (Virgil series) : Nebraska and Kansas.

G. E. Condra and E. C. Reed, 1943, Nebr. Geol. Survey Bull. 14, p. 41, 42, 43, 44.

Woodson granodiorite

See Woodson Mountain grandiorite.

Woodson Mountain granodiorite

Cretaceous: California.

F. S. Miller, 1937, Geol. Soc. America Bull., v. 48, no. 10, p. 1399.

E. S. Larsen, Jr., 1948, Geol. Soc. America Mem. 29, p. 76-82.

Woodway limestone

Middle Ordovician: Virginia.

R. L. Miller and W. P. Brosgg, 1950, U. S. Geol. Survey Oil and Ga.a Inv. Prelim. 

Map 104.

Woody Cove member (of Logy formation) 

Precambrian: Newfoundland, Canada. 

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 13.

Woody Cove shale

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1938, Newfoundland Geol. Survey Bull. 12, p. 14.

Woody Head beds

Mississippian: Newfoundland, Canada.

W. A. Bell, 1948, Canada Geol. Survey Bull. 10, p. 19-20.

Woody Point sandstone

Mississippian: Newfoundland, Canada.

A. O. Hayes and Helgi Johnson, 1938, Newfoundland Geol. Survey Bull. 12, p. 15.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 401

Woolsey member (of Bloyd shale) 

Pennsylvanian: Arkansas. 

L. G. Henbest, 1953, Am. Assoc. Petroleum Geologists Bull., v. 37, no. 8, p. 1943-1944.

Woonasquatucket formation

Precambrian(?) : Rhode Island.

G. M. Richmond in iQ. M. Richmond and W. B. Alien, 1951, R. I. Port and Indus. DeveL 

Comm. Geol. Bull. 4, p. 10,12.

Wordie Creek formation

Botriassic: North Greenland.

Lauge Koch, 1929, Meddel. om Grjfoland, bind 73, afd. 2, nr. 2, p. 249.

Workman Hill conglomerate

Miocene and Pliocene: California.

©. J. Bellemin, 1940, Am. Assoc. Petroleum Geologists BulL, v. 24, no. 4, p. 652 (fig. 2), 

653-655.

Wray channel beds (in Ash Hollow formation) 

Pliocene (Ogallala): Colorado. 

M. K. Elias, 1942, Geol. Soc. America Special Paper 41, p. 143.

Wright Bay formation

Middle Ordovician (Trenton) : North Greenland.

Curt Teichert, 1937, Meddel. om Gr0nland, bind 119, nr. 1, p. 11-26.

Wulff River formation

Lower Cambrian: North Greenland.

Christian Poulsen, 1927, Meddel. om Grtfnland, bind 70, nr. 2, p. 239-240, 338.

Wupatki member (of Moenkopi formation) 

Lower Triassic: Arizona. 

E. D. McKee, 1951, N. Mex. Geol. Soc. Guidebook 2d Field Conf., p. 86, 87 (fig. 1).

Wynn limestone member (of Palo Pinto formation) 

Pennsylavnian (Canyon) : Texas. 

M. G. Cheney, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 1, p. 66, 88.

Wyopo formation

Triassic: Wyoming.

12. B. Branson and C. C. Branson, 1941, Am. Asssoc. Petroleum Geologists Bull., v. 25, 

no. 1, p. 136.

Wyota member (of Dunleith formation) 

Middle Ordovician: Illinois.

J. S. Templeton and H. B. Willman, 1952, Tri-State Geol. Soc. Guidebook 16th Ann. 

Field Conf., p. 24, figs. 3, 12.

XI member (of Rexroad formation) 

Pliocene: Kansas. 

C. W. Hibbard, 1949, Mich. Univ. Mus. Paleontology Contr., v. 7, no. 5, p. 91, 93, 96.

Xilitla beds

Cretaceous (Turonian): San Luis Potosi, Mexico.

Arnold Helm, 1926, Eclogae Geologicae Helvetiae, v. 20, no. 1, p. 87; 1940, v. 33, no. 

2, p. 322.

Yager formation

Upper Jurassic to Cretaceous: California.

B. A. Ogle, 1953, Calif. Dept. Nat. Ees., Div. Mines Bull. 164, p. 13 (fig. 3), 16-22, 

pi. 1.
402, , ., , r .GEOLOGIC. NAMES OF NORTH AMERICA .

Yamhill formation

Eocene: Oregon.

E. M. Baldwin and others, 1955, U. S. Geol. Survey Oil and Gas Inv. Map OM 155.

Yanhuitlan beds

Tertiary (?) : Oaxaca, Mexico.

G. P. Salas, 1949, Asociacifln Mexicana GeClogos Petroleros Bol., v. 1, no. 2, p. 122-124.

Yankee Belle formation

Precambrian and/or Cambrian: British Columbia, Canada. 

S. S. Holland, 1954, British Columbia Dept. Mines Bull. 34, p. 17-18.

Yanks Peak quartzite

Precambrian and/or Cambrian: British Columbia, Canada. 

S. S .Holland, 1954, British Columbia Dept. Mines Bull. 34, p. 18-19.

Yanktonian series

Cretaceous (Cretacic): Iowa.

[C. B.] Keyes, 1936, Pan-Am. Geologist, v. 66, no. 2, p. 154-166.

Yap formation

Pre-Tertiary(?): Caroline Islands (Yap).

Bisaburo Tayama, 1935, Topography, geology, and coral reefs of the Yap Islands: 

Tohoku Univ., Inst. Geology and Paleontology Contr. in Japanese Language, no. 19, 

p. 36-38 [English translation in library of U. S. Geol. Survey, p. 32-33] ; 1952, 

Coral reefs in the South Seas: Japan Hydrog. Office Bull., v. 11, p. 60-61, table 4 

[English translation in library of U. S. Geol. Survey, p. 71-72].

Yaquian series 

Cambrian (Mid-Cambric): Arizona.

[C. E.] Keyes, 1940, Pan-Am. Geologist, v. 74, no. 2, p. 154-156.

Yates formation (in Carlsbad group, subsurface and surface of New Mexico) 

Yates sandstone (in Whitehorse group, subsurface of Texas) 

Permian: Texas and New Mexico. 

G. C. Gester and H. J. Hawley, 1929, Structure .of typical American oil fields : Tulsa,

Okla., Am. Assoc. Petroleum Geologists, v. 2, p. 487-488.

B. K. DeFord, G. D. Biggs, and N. H. Wills, 1938 (abs.) Am. Assoc. Petroleum Geologists Bull., v. 22, no. 12, p. 1706.

Yeager greenstone

Precambrian: Arizona.

E. D. Wilson, 1937 (abs.) Geol. Soc. America Proc. 1936, p. 112; 1939, Geol. Soc. 

America Bull., v. 50, no. 7, p. 1120.

Yellorex flow

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. F. Henderson and I. C. Brown, 1950, Canadian Inst Mining and Metallurgy Trans., 

v. 53, p. 418.

Yellowknif e group

Precambrian: Northwest Territories (Mackenzie), Canada. 

J. F. Henderson, 1938, Canada Geol. Survey Paper 38-1, p. 3-8.

Yellow Limestone formation

Eocene, middle (Lutetian): Jamaica, British West Indies.

J. G. Sawkins, 1869, Reports on the geology of Jamaica : [Great Britain] Geol. Survey

Mem., p. 24. 

C. T. Trechmann, 1923, Geol. Mag., v. 60, no. 8, p. 337-347.
GEOLOGIC NAMES OF NORTH AMERICA INTRODUCED IN 1936-1955 403

Yepomera formation

Pliocene, upper: Chihuahua, Mexico.

L. C. Pray, 1953, in Geological sciences at the California Institute of Technology: 

Calif. Inst. Technology, p. 32.

Ygol member (of Logy formation)

Precambrian: Newfoundland, Canada.

J. O. Fuller, 1941, Newfoundland Geol. Survey Bull. 15, p. 13.

Ymer formation

Middle Cambrian: Northeast Greenland.

A. B. Cleaves and E. F. Fox, 1935, Geol. Soc. America Bull., v. 46, no. 3, p. 474, pi. 43,

Ymir group

Triassic and older (?) : British Columbia, Canada.

H. W. Little, 1950, Canada Geol. Survey Paper 50-19, p. 24-25.

Ynezian stage

Paleocene: California.

V. S. Mallory, 1953 (abs.) Jour. Paleontology, v. 27, no. 6, p. 903.

Yoakum dolomite member (of Queen formation) 

Permian: Texas (subsurface).

W. C. Fritz and James Fitzgerald, Jr., 1940, Am. Assoc. Petroleum Geologists Bull., 

v. 24, no. 1, p. 24-25.

Yogana series

Pre-Cretaceous: Oaxaca, Mexico.

Tomas Barrera, 1946, Guia geoWgica de Oaxaca: Mexico Univ. Nac., Inst. Geologfa, 

p. 82.

Yoho shale lentil (of Mount Whyte formation) 

Middle Cambrian: British Columbia, Canada. 

Franco Kasetti, 1951, Smithsonian Misc. Coll., v. 116, no. 5, p. 63-64.

Yokohl amphibolite

Triassic (?) : California.

Cordell Durrell, 1940, Calif. Univ. Dept. Geol. Sci. Bull., v. 25, no. 1, p. 13-14, 116.

Yokut sandstone

Eocene: California.

E. T. White, 1940, Am. Assoc. Petroleum Geologists Bull., v. 24, no. 10, p. 1722, 1745- 

1747.

Yolo formation

Upper Cretaceous: California.

J. M. Kirby, 1943, Am. Assoc. Petroleum Geologists Bull., v. 27, no. 3, p. 282, 285-287.

Yonakina group

Jurassic (?) : British Columbia, Canada.

F. A. Kerr,. 1945, Canada Geol. Survey Paper (Prelim. Map) 45-30; 1948, Mem. 248, 

p. 20 (table), 35-36, geol. map.

Torba member (of Puente formation) 

Miocene, upper: California. 

J. E. Schoellhamer and others, 1954, U. S. Geol. Survey Oil and Gas Inv. Map OM 154.

York Lake series

Lower (?) Devonian: Quebec, Canada.

I. W. Jones, 1936, Quebec Dept. Mines Ann. Bept. 1935, pt D, p. 15-19.
404 GEOLOGIC NAMES OF NORTH AMERICA

Yorktownian substage

Miocene, upper : Central Atlantic Coastal Plain.

D. S. Malkin, 1953, Jour. Paleontology, v. 27, no. 6, p. 76T-T68.

Youghall formation

Pennsylvanian: Colorado and Utah.

M. L. Thompson, 1945, Kans. State Geol. Survey Bull. 60, pt. 2, p. 34-39.

Youghiogheny sandstone

Upper Devonian (Conewango) : Pennsylvania.

W. M. Laird, 1941, Pa. Topog. and Geol. Survey Progress Rept. 126, p. 9 (footnote?.

Younger Angaur limestone

See Angaur (Older and Younger) limestone.

Younghall formation

See Youghall formation.

Youngman formation

Middle Ordovician (Chazyan) : Vermont and Quebec, Canada.

Marshall Kay, 1945, (abs.) Geol. Soc. America Bull., v. 56, no. 12, pt. 2, p. 1172.

Young's Cove group

Cambrian: Newfoundland, Canada.

W. H. Twenhofel, 1947, Am. Jour. Sci., v. 245, no. 2, p. 92.

R. E. Van Alstine, 1948, Newfoundland Geol. Survey Bull. 23, p. 12.

Young Sound facies

Lower Cretaceous (middle Valanginian) : Northeast Greenland. 

Wolf Maync, 1949, Meddel, om Gr0nland, bind 133, nr. 3, p. 86, 185-192, 281.

Yucatan limestones

Upper Cretaceous (Campanian) : Cuba.

J. F. de Albear, 1947, Am. Assoc. Petroleum Geologists Bull., v. 31, no. 1, p. 78.

Zabriskie quartzite member (of Wood Canyon formation) 

Lower Cambrian: California.

J. C. Hazzard, 1937, Calif. Jour. Mines and Geology, v. 33, no. 4, p. 278 (fig. 3d)', 

309-310.

Zadoc member (of McNairy formation) 

Cretaceous (Gulf series) : Missouri.

M. M. Leighton, J. M. Weller, and H. S. McQueen, 1939, in Kansas Geol. SdC. Guid£-' 

book 13th Ann. Field Conf. p. 70 (fig. 25).

Zagaya limestone member (of Toco formation)

Lower Cretaceous: Trinidad, British West Indies.

H. G. Kugler, 1953, Vereinigung Schweizer Petroleum Geologen u. Ingenieure Bull.f 

v. 20, no. 59, p. 33.

Zarah subgroup

Pennsylvanian (Missourian) : Kansas, Iowa, Missouri, Nebraska, and

Oklahoma. 

R. C. Moore, 1948, Am. Assoc. Petroleum Geologists Bull., v. 32, no. 11, p. 2033, 2035.

Zargazal formation

Miocene, middle: Tabasco and Chiapas, Mexico.

J. B. Gibson, 1936, Soc. Geol. Mexicana Bol., tomtf 9, no. 5, correlation chart. 

G. P. Salas and Ernesto Lopez Ramos, 1951, Asociaci6n Mexicana Ge61ogos Petroleros 

Bol., v. 3, nos. 1-2, p. 38-39.
GEOLOGIC NAMES OP NORTH AMERICA INTRODUCED IN 19 3 6-1955 405

Zealand sediments

Precambrian (Keewatin) : Ontario, Canada.

Jack Satterly, 1943, Ontario Dept. Mines Ann. Rcpt., v. 50, pt. 2, p. 30-31.

Zebra slate

Precambrian: Newfoundland (Labrador), Canada. 

G. V. Douglas, 1953, Canada Geol. Survey Paper 53-1, p. 56.

Zell limestone member (of Macy formation) 

Middle Ordovician: Missouri. 

E. E. Larson, 1951, Am. Assoc. Petroleum Geologists Bull., v. 35, no. 9, p. 2061-2064.

Zenoria lentil (of Verda member of Yazoo clay) 

Eocene, upper: Louisiana. 

H. N. Fisk, 1938, La. Dept. Conserv. Geol. Bull. 10, p. 78, 104-105.

tZesch formation

Upper (?) Devonian: Texas.

V. E. Barnes, P. E. Cloud, Jr., and L. E. Warren, 1947, Geol. Soc. America Bull., v. 58, 

no. 2, p. 138-139.

Zeta Lake granite porphyry facies (of Ogishke conglomerate) 

Precambrian (Knife Lake): Minnesota.

J. T. Stark and V. G. Sleight, 1939, Geol. Sec. America Bull., v. 50, no. 7, p. 1032 

(table 2), 1034-1035.

Zeto Point basalt porphyry

Tertiary: Alaska (Aleutian Islands).

K. B. Coats, 1947, U. S. Geol. Survey Alaskan Volcano Inv. Bept. 2, pt 5, p. 77.

Zilpha clay

Eocene, middle (Claiborne group) : Mississippi.

1940, Miss. Geol. Soc. [Guidebook 2] Field Trip, March 9-10, p. 3, 11-12.

E." P. Thomas, 1942, Miss. State Geol. Survey Bull. 48, p. 33-40.

Zincton member (of Slocan series)

Triassic: British Columbia, Canada.

M. S. Hedley, 1947, British Columbia Dept. Mines Bull. 22, p. 7.

Zoroaster granite

Precambrian (Archean): Arizona.

lan Campbell and J. H. Maxson, 1936, Carnegie Inst. Washington Year Book 35, 

p. 329-331.

Zuloaga limestone

Upper Jurassic: Zacatecas and Coahuila, Mexico.

K. W. Imlay, 1938, Geol. Soc. America Bull., v. 49, no. 11, p. 1657-1659.

Zumpimito formation

Tertiary: Michoacan, Mexico.

Howel Williams, 1945, Am. Geophys. Union Trans., v. 26, no. 2, p. 255.

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