Index to the 

Geologic Names of 

North America

GEOLOGICAL SURVEY BULLETIN 1056-B

Index to the 

Geologic Names of 

North America

By DRUID WILSON, GRACE C. KEROHER, and BLANCHE E. HANSEN

GEOLOGIC NAMES OF NORTH AMERICA

GEOLOGICAL SURVEY BULLETIN 10S6-B

Geologic names arranged by age and by 

area containing type locality. Includes 

names in Greenland, the West Indies, 

the Pacific Island possessions of the 

United States, and the Trust Territory 

of the Pacific Islands

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959
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.G. - Price 60 cents (paper cover)
CONTENTS

	Page

Major stratigraphic and time divisions in use by the U.S. Geological Survey._ iv

Introduction______________________________________ 407

Acknowledgments. _--__ _______ _________________________________ 410

Bibliography________________________________________________ 410

Symbols___________________________________ 413

Geologic time and time-stratigraphic (time-rock) units________________ 415

Time terms of nongeographic origin_______________________-______ 415

Cenozoic_________________________________________________ 415

Pleistocene (glacial)______________________________________ 415

Cenozoic (marine)_______________________________________ 418

Eastern North America_______________________________ 418

Western North America__-__-_____----------__-----____ 419

Cenozoic (continental)___________________________________ 421

Mesozoic________________________________________________ 421

Cretaceous______________________________________________ 422

Jurassic__ ______________________________________________ 422

Triassic ____________________________________ 422

Paleozoic.________________________________________________ 422

Permian___________________._______________ 423

Pennsylvanian__________________________________________ 423

Mississippian____________________________________________ 424

Devonian_______________________________________________ 425

Silurian________________________________________________ 425

Ordovician______________________________________________ 426

Cambrian_______________________________________________ 426

Precambrian-_____________________________________________ 427

Rock Units ..__________________________________ 429

United States....._____________.________________ 429

Canada...________________________________.__ 576

St. Pierre and Miquelon________________________________________ 603

Mexico.___________________________________._ 603

Central America_____________________________________________ 607

Greenland.....___._____________________.____...__ 609

Bermuda__________________________________________________ 611

West Indies.._________________________________ 612

Pacific Islands_______________________________________________ 618

Additions and corrections...-_________-____.-____________-------- 621

ni
Major stratigraphic and time divisions in use by the U.S. Geological Survey

Era

Cenozoic

Mesozoic

Paleozoic

System or Period

Quaternary

Tertiary

Cretaceous 2

Jurassic

Triassic

Permian 2

g § | Pennsylvanian 2

f2.2

Q-^ 5? Mississippian 2

Devonian

Silurian 2

Ordovician 2

Cambrian 2

Precambrian 2

Series or Epoch

Recent

Pleistocene

Pliocene

Miocene

Oligocene

Eocene

Paleocene

Upper (Late) 

Lower (Early)

Upper (Late) 

Middle (Middle) 

Lower (Early)

Upper (Late) 

Middle (Middle) 

Lower (Early)

Upper (Late) 

Middle (Middle) 

Lower (Early)

Upper (Late) 

Lower (Early)

Upper (Late) 

Middle (Middle) 

Lower (Early)

Upper (Late) 

Middle (Middle) 

Lower (Early)

Upper (Late) 

Middle (Middle) 

Lower (Early)

Upper (Late) 

Middle (Middle) 

Lower (Early)

Informal subdivisions 

such as upper, middle, 

and lower, or upper 

and lower, or younger 

and older may be used 

locally.

Estimated 

ages of tune 

boundaries in 

millions of 

years '

 1_

 10 

ocr

 40 

£ff\

10K

i^n

1 9ft

OAR

oec

01 C

OCA

IOA

Kin

Terms designating time are La parentheses. Informal time terms early, middle, and late may be used 

for eras, periods, and epochs where there is no formal subdivision into Early, Middle, and Late. Informal 

rock terms lower, middle, and upper may be used where there is no formal subdivision of a system or of a 

series.

1 Age values given are the Holmes "B" time scale points (Holmes, 1947, p. 145). pates are rounded to 

the nearest 5 million years. The errors are unknown, but more recent age determinations by various physical methods are in partial agreement with these values. For a recent compilation of radiogenic dates see 

selection of Adolph Knopf in Longwell's "Geologic column and scale of time" (1958, AGI 5).

8 Provincial series accepted for use in U.S. Geological Survey reports are listed under both the time and 

the rock units.

IV
GEOLOGIC NAMES OF NORTH AMERICA

INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA

By DRUID WILSON, GRACE C. KEROHER, and BLANCHE E. HANSEN

INTRODUCTION

Beginning in 1902, the U.S. Geological Survey has published five 

compilations treating the names of geologic formations and stratigraphic classification and nomenclature:

"North American Geologic Formation Names," by F. B. Weeks 

(Bull. 191, 1902).

"The Geologic Time Classification of the United States Geological Survey Compared with Other Classifications, Accompanied 

by the Original Definitions of Era, Period, and Epoch Terms," by 

M. Grace Wilmarth (Bull. 769, 1925).

"Names and Definitions of the Geologic Units of California," by 

M. Grace Wilmarth (Bull. 826, 1931).

"Lexicon of Geologic Names of the United States (including 

Alaska)," by M. Grace Wilmarth (Bull. 896, 1938; reprinted 1951, 

1957).

"Geologic Names of North America Introduced in 1936-1955," 

by Druid Wilson, W. J. Sando, R. W. Kopf, and others (Bull. 1056-A, 

1957).

The demand for compilations of geologic names is well attested by 

the circumstance surrounding the completion of the first Survey 

compilation by F. B. Weeks. In 1899, after it became apparent that 

the task was too great for one compiler, Survey geologists were asked 

to help, and were apportioned parts of the geologic literature to review. 

In this way the compilation was completed and published in 1902. 

The following geologists participated: M. R. Campbell, N. H. Darton, 

J. S. Diller, G. H. Girty, C. W. Hayes, F. H. Knowlton, F. L. Ransome, 

G. 0. Smith, A. C. Spencer, T. W. Stanton, J. A. Taff, T. W. Vaughan, 

and David White.

Wilmarth's compilation of terms used in geologic-tune classification 

was published in 1925 and is still invaluable for quotations of the 

original definitions and descriptions of the standard and other strati407
408 GEOLOGIC NAMES OF NORTH AMERICA

graphic and tune divisions from widely scattered and sometimes unavailable sources. The California names and their annotations published in 1931 were repeated without change in Wilmarth's lexicon of 

the United States names in 1938. The reprinting of Wilmarth's lexicon 

in 1951 and 1957 confirms its place in the field of geologic publications. 

Brevity of format in "Geologic Names of North America Introduced 

in 1936-1955" made it possible to bring out quickly a compilation 

intended to be superseded by the first supplement to Wilmarth's 

lexicon, now in preparation.

In the present report the geologic names of North America, including 

Greenland, the West Indies, the Pacific Island possessions of the 

United States, and the Trust Territory of the Pacific Islands, that 

were published before 1956 are arranged to form a nonalphabetic 

index to Wilmarth's lexicon and to the "Geologic Names of North 

America Introduced in 1936-1955." This grouping of the names on 

the basis of the age and politico-geographic divisions containing the 

type locality is an easily used key not available elsewhere. The age 

of each formation (that is, rock unit) named from an area is shown, 

but not its complete geographic extent. The geologic-tune and timestratigraphic units are grouped together under the major time 

divisions.

Some names entered in Wilmarth's lexicon have been omitted. 

They include (a) all paleontologic and descriptive terms, (b) all 

names of economic units, such as miner's terms, trade names, and 

subsurface names identical with the names of formal rock units, 

(c) the names of moraines and other units of which physiography is 

an essential part of the definition, and (d) the names of orogenies. 

The American Commission on Stratigraphic Nomenclature (1955, 

p. 2008) has recommended that the names of moraines and other 

physiographic units be considered informal and not subject to the 

rules that apply to stratigraphic names.

The names of the rock units are listed once only in the geographic 

area that contains or is assumed to contain the type area or locality. 

Thus, the Grenville series, a geologic name commonly used in the 

State of New York, is listed under the Canadian province of Ontario, 

where its type locality occurs; and the Colorado group or shale, used 

widely in Canada, is under the State of Colorado. Not all geologic 

formations end at political boundaries.

In the period of more than 20 years since the compilation if Wilmarth's lexicon, many names have been revised and many names not 

then accepted for use by the U.S. Geological Survey have been 

adopted. Adoption of names for use by the U.S. Geological Survey 

is based on the published and unpublished reports of Federal Survey 

geologists on areas of the United States and its possessions or trust
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 409

territories. The U.S. Geological Survey has had occasion to consider 

for acceptance or rejection considerably less than one-half of the 

names of geologic units occurring in the United States. The names 

of units adopted through 1958 appear in boldface type under their 

currently designated ages. Changes in the designated rank and age 

of the named units accepted for use in U.S. Geological Survey reports 

are shown here as authorized by the Chief Geologist, upon the recommendation of the Geologic Names Committee of the Federal Survey. 

They embody all changes, published or unpublished, made before 

July 1, 1959.

Numerous inconsistencies in listed age assignments are apparent in 

this compilation. These result in part from differences of opinion 

of the original authors and in part from Survey-accepted revisions and 

investigations that have been made since the publication of Wilmarth's 

lexicon. Thus, the inconsistencies illustrate the essential subjectivity 

of all age assignments and reflect the objectivity that a compiler 

seeks to attain.

The compilers are responsible for listing changes in the age designations of certain non-Survey names. These are (a) age assignments 

of a few units whose ages had been listed hi general terms; (b) placing 

under Paleocene some units formerly listed as Eocene; and (c) assignment of some units of Pennsylvanian age to provincial series in conformance to the nomenclature adopted by agreement of the State geological 

surveys of Iowa, Kansas, Missouri, Nebraska, and Oklahoma and for 

the most part accepted by the U.S. Geological Survey.

Age changes and future revisions of all units will be considered in 

supplements to Wilmarth's lexicon, where they can be adequately 

documented. The first supplement is now in preparation.

The names are grouped under two main categories: (a) geologic-tune 

and time-stratigraphic units, and (b) rock units. Only the time 

units require explanation. There is general agreement among 

American geologists as to the major practical stratigraphic and time 

divisions, if not as to their boundaries. Those in use by most geologists and the U.S. Geological Survey are shown in the table (p. rv). 

Less agreement exists in the use of the term "series." "Series" has been 

used as a rock (rock-stratigraphic) term of higher rank than "group," 

but more commonly as a time-stratigraphic (tune-rock) term for a 

subdivision of a system. In the following reports concerned with 

stratigraphic classification and nomenclature, "series" has been 

considered as a part of the time-stratigraphic classification: Schenck 

and Muller (1941, p. 1421), the American Commission on Stratigraphic 

Nomenclature (1947, p. 523), Hedberg (1948, p. 452; 1958, p. 1892), 

Woodring (1953, p. 1082), and Dunbar and Rodgers (1957, p. 297-298). 

The use of "series" as a time-stratigraphic term has been recom-
410 GEOLOGIC NAMES OF NORTH AMERICA

mended by the American Commission on Stratigraphic Nomenclature 

(1956, p. 2006), and the U.S. Geological Survey will consider this 

usage for acceptance when the Commission adopts the revised Stratigraphic Code.

Because of this variance in usage, the names of most series are listed 

with both the time and the rock units, but a few names of series that 

are undefined and have had little or no usage for example, the 

Nutrian series of Jurassic age in Arizona are listed only under the 

rock units. The names of some series and stages which have been 

derived from units listed in Wilmarth's lexicon as rock units, and 

which are currently in wide usage, appear under the time units as a 

part of the standard sequences of certain periods. These are cited 

from the various sources from which the standard sequences were 

taken, and the designation under which they are entered in Wilmarth's 

lexicon appears in brackets; the Osage series [see Osage group 1] of 

Early Mississippian age is an example. Precambrian series that 

have been used to indicate correlative time are listed with the time 

units, but the majority of the Precambrian series names are listed 

only under the rock units.

ACKNOWLEDGMENTS

We are grateful for the cooperation and assistance of George V. 

Cohee, chairman, and the staff of the Geologic Names Committee 

during the compilation of this index. Thanks are extended to Ellen 

James Trumbull for advice on the problems of arrangement and to 

Allison R. Palmer for advice concerning Cambrian time-stratigraphic 

terms. Other colleagues to whom we are indebted for helpful suggestions are: Jean M. Berdan, W. A. Cobban, P. E. Cloud, Jr., Helen 

Duncan, D. L. Durham, J. T. Dutro, James Gilluly, C. B. Hunt, 

G. E. Lewis, F. S. MacNeil, C. W. Merriam, G. N. Pipiringos, C. A. 

Repenning, R. J. Ross, Jr., W. J. Sando, G. R. Scott, J. E. Smedley, 

P. D. Snavely, Jr., Sandra Whalen Stock, Martha Toulmin, J. A. 

Vedder, and W. P. Woodring.

BIBLIOGRAPHY

Inasmuch as the correlation charts prepared by the Committee on Stratigraphy 

of the National Research Council, usually referred to as the GSA (Geological 

Society of America) correlation charts, are the major source of the arrangements 

of the standard time sequences given under the time units, they are listed here 

by number as a convenient source of reference. Other references follow, listed 

alphabetically.

GSA Charts

Chart 1. Howell, B. F., and others, 1944, Correlation of the Cambrian formations of North America: Geol. Soc. America Bull., v. 55, no. 

8, p. 993-1003.

2. Twenhofel, W. H., and others, 1954, Correlation of the Ordovician 

formations of North America: ibid., v. 65, no. 3, p. 247-298.
INDEX TO THE GEOLOGIC NAMES OP NOETH AMERICA 411

Chart 3. Swartz, C. K., and others, 1942, Correlation of the Silurian formations of North America: ibid., v. 53, no. 4, p. 533-538.

4. Cooper, G. A., and others, 1942, Correlation of the Devonian sedimentary formations of North America: ibid., v. 53. no. 12, pt. 1, 

p. 1729-1794.

5. Weller, J. M., and others, 1948, Correlation of the Mississippian 

formations of North America: ibid., v. 59, no. 2, p. 91-196.

6. Moore, E. C., and others, 1944, Correlation of Pennsylvanian formations of North America: ibid., v. 55, no. 6, p. 657-706.

7. Dunbar, C. O., and others, (in preparation), Correlation of the

Permian formations of North America: ibid.

8a. Eeeside, J. B., Jr., and others, 1957, Correlation of the Triassic 

formations of North America exclusive of Canada: ibid., v. 68, 

no. 11, p. 1451-1514. 

8b. McLearn, F. H., 1953, Correlation of the Triassic formations of

Canada: ibid., v. 64, no. 10, p. 1205-1227. 

8c. Imlay, E. W., 1952, Correlation of the Jurassic formations of North

America exclusive of Canada: ibid., v. 63, no. 9, p. 953-992. 

8d. Frebold, Hans, 1953, Correlation of the Jurassic formations of

Canada: ibid., v. 64, no. 10, p. 1229-1246.

9. Stephenson, L. W., and others, 1942, Correlation of the outcropping 

Cretaceous formations of the Atlantic and Gulf Coastal Plain 

and trans-Pecos Texas: ibid., v. 53, no. 3, p. 435-448. 

lOa, Imlay, E. W., 1944, Correlation of the Cretaceous formations of the 

Greater Antilles, Central America, and Mexico: ibid., v. 55, no. 

8, p. 1005-1045.

lOb. Cobban, W. A., and Eeeside, J. B., Jr., 1952, Correlation of the 

Cretaceous formations of the Western Interior of the United 

States: ibid., v. 63, no. 10, p. 1011-1043. 

lOc. McLearn, F. H., and others, (in preparation), Correlation of the

Cretaceous formations of Canada: ibid.

lOd. Imlay, E. W., and Eeeside, J. B., Jr., 1954, Correlation of the 

Cretaceous formations of Greenland and Alaska: ibid., v. 65, 

no. 3, p. 223-246.

lOe. Imlay, E. W., Popenoe, W. P., and Murphy, M. A., (in preparation), 

Correlation of the Cretaceous formations of The Pacific Coast of 

the United States and northwestern Mexico: ibid.

11. Weaver, C. E., and others, 1944, Correlation of the marine Cenozoic 

formations of western North America: ibid., v. 55, no. 5, p. 569- 

598

12. Cooke, C. W., Gardner, Julia, and Woodring, W. P., 1943, Correlation of the Cenozoic formations of the Atlantic and Gulf 

Coastal Plain and the Caribbean region: ibid., v. 54, no. 11, p. 

1713-1723.

Reports

American Commission on Stratigraphic Nomenclature, 1947, Note 1 Organization and objectives of the stratigraphic commission: Am. Assoc. Petroleum 

Geologists Bull., v. 31, no. 3, p. 513-528.

 1956, Eeport 4 Nature, usage, and nomenclature of rock-stratigraphic 

units: Am. Assoc. Petroleum Geologists Bull., v. 40, no. 8, p. 2003-2014.

Bell, W. C., Berg, E. R., and Nelson, C. A., 1956, Croixian type area upper 

Mississippi Valley, in Eodgers, John, ed., El sistema Cdmbrico, su paleogeografia y el problema de su base, tomo 2: Internat. geol. Gong., 20th, 

Mexico 1956, p. 415-442.

Chadwick, G. H., 1930, Subdivisions of geologic time [abs.]: Geol. Soc. America 

Bull., v. 41, no. 1, p. 47-48.

Dunbar, C. O., and Eodgers, John, 1957, Principles of stratigraphy: New York, 

John Wiley and Sons, 356 p.

Durham, J. W., 1954, The marine Cenozoic of California: California Div. Mines 

Bull. 170, chap. 3, p. 23-31.

Durham, J. W., Jahns, E. H., and Savage, D. E., 1954. Marine-nonmarine relationships in the Cenozoic section of California: California Div. Mines BulL 

170, chap. 3, p. 59-71.
412 GEOLOGIC NAMES OF NORTH AMERICA

Gill, J. E., 1952, Early history of the Canadian Precambrian Shield: Geol. Assoc.

Canada Proc., v. 5, p. 57-68. 

 1955, Precambrian nomenclature in Canada: Royal Soc. Canada Trans.,

3d ser., v. 49, sec. 4, p. 25-29.

1955a, Precambrian history of the Canadian Shield with notes on correlation and nomenclature: Geol. Assoc. Canada Proc., v. 7, pt. 2, p. 117-124. 

Goudkoff, P. P., 1945, Stratigraphic relations of Upper Cretaceous in Great

Valley, California: Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7,

p. 956-1007. 

Grout, F. F., and others, 1951, Precambrian stratigraphy of Minnesota: Geol.

Soc. America Bull., v. 62, no. 9, p. 1017-1078. 

Harris, G. D., 1932, Suggestions in stratigraphic nomenclature: Science, new ser.,

v. 76, no. 1978, p. 489. 

Hedberg, H. D., 1948, Time-stratigraphic classification of sedimentary rocks:

Geol. Soc. America Bull., v. 59, no. 5, p. 447-462.

 1958, Stratigraphic classification and terminology: Am. Assoc. Petroleum

Geologists Bull., v. 42, no. 8, p. 1881-1896. 

Holmes, Arthur, 1947, The construction of a geological time-scale: Geol. Soc.

Glasgow Trans., v. 21, pt. 1, p. 117-152. 

Kleinpell, R. M., 1934, Difficulty of using cartographic terminology in historical

geology: Am. Assoc. Petroleum Geologists Bull., v. 18, no. 3, p. 374-379.

 1935, Proposed biostratigraphic classification of California Miocene 

[abs.]: Geol. Soc. America Proc. 1934, p. 390.

1938, Miocene stratigraphy of California: Tulsa, Okla., Am. Assoc.

Petroleum Geologists, 450 p. 

Knopf, Adolph, 1955, Bathyliths in time, in Poldervaart, A., ed., Crust of the

earth a symposium: Geol. Soc. America Spec. Paper 62, p. 685-702. 

Leith, C. K., 1934, The pre-Cambrian: Geol. Soc. America Proc. 1933, p. 151-180. 

Longwell, C. R., 1958, Geologic column and scale of time: AGI [Am. Geol. Inst.

Data Sheet] 5; in GeoTimes, v. 2, no, 9, p. 13-14. 

Malkin, D. S., 1953, Biostratigraphic study of Miocene Ostracoda of New Jersey,

Maryland, and Virginia: Jour. Paleontology, v. 27, no. 6, p. 761-799. 

Mallory, V. S., 1953, California lower Tertiary foraminiferal sequence [abs.]:

Jour. Paleontology, v. 27, no. 6, p. 903; Am. Assoc. Petroleum Geologists

Bull., v. 37, no. 12, p. 2781; Jour. Sed. Petrology, v. 24, no. 2, p. 345 [1954]. 

 1954, Correlation [chart] of Eocene of California by a comparison of

Laiming's and Mallory's proposed stages: Pacific Petroleum Geologist, v. 8,

no. 10 [11], p. 1.

1959, Lower Tertiary biostratigraphy of the California Coast Ranges:

Tulsa, Okla., Am. Assoc. Petroleum Geologists, 416 p. 

Natland, Manley, 1953, Correlation [chart] of Pleistocene and Pliocene stages in

southern California, in Pacific Petroleum Geologist, v. 7, no. 2, p. 2. 

Rodgers, John, 1954, Nature, usage, and nomenclature of stratigraphic units 

a minority report: Am. Assoc. Petroleum Geologists Bull., v. 38, no. 4,

p. 655-659. 

Schenck, H. G., and Kleinpell, R. M., 1936, Refugian stage of Pacific Coast

Tertiary: Am. Assoc. Petroleum Geologists Bull., v. 20, no 2, p. 215-225. 

Stainforth, R. M., 1953, The basis of Paleogene correlation of Middle America:

Soc. Geol. Peru Bol., v. 26, p. 247-261. 

Wilson, J. T., 1952, Some considerations regarding geochronology with special

reference to Precambrian time: Am. Geophys. Union Trans., v. 33, no. 2,

p. 195-203. 

Wood, H. E., 2d, and others, 1941, Nomenclature and correlation of the North

American continental Tertiary: Geol. Soc. America Bull., v. 52, no. 1, p. 1-48. 

Woodring, W. P., 1953, Stratigraphic classification and nomenclature: Am.

Assoc. Petroleum Geologists Bull., v. 37, no. 5, p. 1081-1083.
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 413 

SYMBOLS

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

U.S. Geological Survey, 

t Names preceded by a dagger have been either abandoned by their

authors or rejected for use by the U.S. Geological Survey.

1 Names followed by this superscript are in Wilmarth's "Lexicon of 

Geologic Names of the United States (Including Alaska)" (U.S. 

Geol. Survey Bull. 896).

2 Names followed by this superscript are in "Geologic Names of 

North America Introduced in 1936-1955" (U.S. Geol. Survey Bull. 

1056-A).

Names in use by the U.S. Geological Survey for which the rank or 

lithic designation has been changed are followed by the former 

designation in parenthesis, except when the original combination 

is a part of the currently accepted usage. Examples (both from the 

Pleistocene names of Kansas): 

Pearlette ash 1 member (of Sappa formation) 

Missler member (of Ballard formation);(as member of Meade formation 2)

GEOLOGIC TIME AND TIME-STRATIGRAPHIC (TIMEROCK) UNITS

Sequences of units commonly used as standards for North America are given 

under each major time division. They have been assembled from several 

sources, but mainly from the correlation charts prepared by the Committee on 

Stratigraphy of the National Research Council.

Certain of the sequences coincide in part or completely with current usage of 

the U.S. Geological Survey; thus the units adopted are shown in boldface type. 

A single unit in boldface within a sequence does not indicate that all or other 

parts of the sequence have been adopted; only those units appearing in boldface 

type are currently in use by the Survey. In all instances the precise rank and 

terminology, and certain restrictions in Survey usage, are noted.

TIME TERMS OF NONGEOGRAPHIC ORIGIN

The terms listed below have been proposed for various units of geologic time. 

The nongeographic origin probably indicates that all were intended for world-wide 

application. A few have had considerable usage, but most of the terms are 

currently replaced by standard divisions of geologic time (see table, p. iv). 

The nongeographic term Phanerozoic has come into usage as a convenient expression covering Cambrian plus all later time. It was proposed as the 

Phanerozoic or Phanerpbiotic eon by Chadwick (1930, p. 48) together with the 

Cryptozoic or Cryptobiotic eon for all Precambrian time. Harris (1932, p. 489) 

independently proposed the Phenozoic and Cryptozoic eons for the same spans 

of time. 

Recent

Autocene 1

Holocene l

fPsychozoic era l 

Quaternary

Antropoceno periodo 2

Cenocene series l

Epicene series 1

Hectozoic l 

Tertiary

Neozoic 1

Pentozoic 1 

Miocene-Pliocene

Neogene l ; Neocene 

Eocene-Oligocene

Eogene 1 

Paleocene-Oligocene

Paleogene 1

Mesozoic

Deutozoic *

Tetrazoic 1

Trizoic * 

Precambrian

" Agnotozoic era l

' Archean period or system l

 Archeozoic era 1 

"Azoic era l

 Collozoic age l

 'Eobiotic era 1 

"Eomorphic era 1 

' Eozoic era l

 Eparchean 1 

' Hypozoic era l 

"Progonic 1

 Proterozoic era 1

 Protozoic era 1

 Prozoic era 1

CENOZOIC

Pleistocene (glacial)

The following glacial and inter glacial stages typically developed *in central 

North America are commonly used as the North American standard sequence 

(see Cooke and Gardner in Cooke, Gardner, and Woodring, 1943, Chart 12): 

'Wisconsin [glacial] stage 1 (Wisconsin) * 

Sangamon [interglacial] stage 1 (Illinois) 

Illinoian [glacial] stage l (Illinois) 

< Yarmouth [interglacial] stage l (Iowa) 

Kansan [glacial] stage 1 (Kansas; standard sections in Iowa) 

Aftonian [interglacial] stage 1 (Iowa) 

kNebraskan [glacial] stage 1 (Nebraska)

* The U.S. Geological Survey currently has under consideration the usage of time-stratigraphic nomenclature in the Pleistocene epoch.

415
416 GEOLOGIC NAMES OF NORTH AMERICA

Pleistocene (glacial) Continued

The glacial Pleistocene time and time-stratigraphic units listed below have been 

used or are currently in use: 

Central North America 

Pleistocene (Wisconsin)

Almenan subage 2 (Kansas)

Ashawan l (Iowa)

Bradyan interglacial substage 2 (Nebraska)

Cary substage l (Illinois)

Cochrane glacial substage 2 (Ontario)

Eldoran epoch and series * (Iowa)

Farmdale substage 2 (Illinois)

fHudsonian substage 1 (Great Lakes region)

lowan substage (as stage l) (Iowa)

fManitoban substage 1 (Great Lakes region)

Mankato substage 1 (Minnesota)

fPeorian stage * (Illinois)

fQuebecan substage * (Great Lakes region)

Scandian subage 2 (Kansas)

Tazewell substage 1 (Illinois)

Valders glacial substage 2 (Wisconsin)

fWabash stage * (Indiana) 

Pleistocene (Illinoian and Sangamon)

Centralian epoch and series 1 (Illinois) 

Pleistocene (Kansan and Yarmouth)

Ottumwan epoch and series 1 (Iowa) 

Pleistocene (Kansan)

Mahaskan glacial epoch 1 (Iowa) 

Pleistocene (Nebraskan and Aftonian)

Grandian epoch and series l (Iowa) 

Pleistocene (Nebraskan)

Adelphian l (Iowa) 

Pleistocene ("pre-Nebraskan")

Gravoisan glacial epoch 1 (Missouri)

Moingonan glacial epoch 1 (Iowa) 

Northeastern United States and eastern Canada 

Pleistocene

fChamplain period l (Vermont-New York-Quebec)

Iroquois stage * (Great Lakes region)

St. Lawrence stage 1 (St. Lawrence Valley)

Toronto stage 1 (Ontario)

Warren stage l (Great Lakes region) 

Northeastern United States (Atlantic coastal region) 

Pleistocene

Boston glacial substage 2 (Massachusetts)

College Point stage 1 (Long Island, N.Y.)

Gardiners stage 1 (Gardiners Island, N.Y.)

Heampstead substage 1 (Long Island, N.Y.)

Herod substage * (Long Island, N.Y.)

Jacob stage 1 (Long Island, N.Y.)

Jameco stage 1 (Long Island, N.Y.)

Jerseyan stage * (New Jersey)

Lexington glacial substage 2 (Massachusetts)

Manhasset stage 1 (Long Island, N.Y.)

Mannetto stage 1 (Long Island, N.Y.)

Montauk substage 1 (Long Island, N.Y.)

Port Washington stage 1 (Long Island, N.Y.)

Vineyard interglacial stage 1 (Massachusetts) 

Cordilleran North America (Rocky Mountains region) 

Pleistocene

Albertan J (Alberta)

Albion glacial stage 1 (Colorado)

Alma glacial substage 2 (Colorado)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 417

Pleistocene (glacial) Continued

Cordilleran North America (Rocky Mountain Region) Continued

American Lakes glacial substage 2 (Colorado)

Angel Lake glacial stage 1 (Nevada)

fAnimas interglacial epoch ! (Colorado)

Arapaho glacial stage 2 (Colorado)

Bigelow glacial substage 2 (Colorado)

fBighorn glacial epoch J (Wyoming)

Blacks Fork glacial stage l (Utah)

Brisco glacial substage 2 (Colorado)

Buffalo glacial stage * (Wyoming)

Bull Lake glacial stage l (Wyoming)

Cerro glacial stage 1 (Colorado)

Chapman Gulch glaciation 2 (Colorado)

Clarkston stage 2 (Washington)

Corral Creek glacial substage 2 (Colorado)

Durango glacial stage 1 (Colorado)

Fairplay glacial substage 2 (Colorado)

Gould glacial substage 2 (Colorado)

Hell Gate glacial substage 2 (Colorado)

Hell Inlet glacial stage 2 (Colorado)

Home glacial substage 2 (Colorado)

Ivanhoe glacial substage 2 (Colorado)

Lamoille glacial stage * (Nevada)

Lime Creek glacial stage 2 (Colorado)

Little Dry glacial stage 1 (Utah)

Long Draw glacial substage 2 (Colorado)

Monarch glacial stage 2 (Colorado)

Neva glacial stage 2 (Colorado)

Owl Mountain glacial substage * (Colorado)

Pinedale glacial stage 1 (Wyoming)

Prairie Divide glacial stage 2 (Colorado)

Pretty Meadow glacial stage 2 (Colorado)

Provo epoch l or stage * (Utah)

River glacial stage 2 (Colorado)

St. Eugene interglacial epoch 1 (British Columbia)

fSan Juan glacial epoch 1 (Colorado)

Silver Creek glacial substage 2 (Colorado)

Smith Fork glacial stage l (Utah)

Spokane glaciation 1 (Washington)

Sprague glacial substage 2 (Colorado)

Stillwater glacial stage 2 (Colorado)

Temple Lake glacial stage 2 (Wyoming)

Thomasville glacial substage 2 (Colorado)

Twin Lakes glacial substage 2 (Colorado)

fUinta glacial epoch 1 (Colorado)

fUncompahgre interglacial interval 1 (Colorado)

Walden Hollow glacial stage 2 (Colorado)

Wycliffe glacial epoch 1 (British Columbia) 

Cordilleran North America (Sierra Nevada region, California) 

Pleistocene

Aeolian Buttes stage (see Aeolian Buttes till 2)

El Portal stage J

Glacier Point (glacial) stage 1

McGee glacial stage 1

Sherwin glacial stage 1

Tahoe glacial stage 1

Tioga glacial stage 1

Yosemite glacial epoch l
418 GEOLOGIC NAMES OF NORTH AMERICA

Pleistocene (glacial) Continued

Cordilleran North America (Cascade Range region) 

Pleistocene

Admiralty glacial epoch l (Washington)

Cascadian stage l (Oregon)

Detroit glacial stage 2 (Oregon)

Jeffersonian stage 1 (Oregon)

Leavenworth glacial stage 2 (Washington)

Mill City glacial stage * (Oregon)

Peshastin glacial stage 2 (Washington)

Puyallup interglacial epoch 1 (Washington)

Stuart glacial stage * (Washington)

Tunnel Creek glacial stage 2 (Oregon)

Vashon glacial epoch * (Washington)

Willamettian stage 1 (Oregon) 

Cordilleran North America (Alaska) 

Pleistocene

Anaktuvuk glaciation 2

Brooks Lake glaciation 2

Browne glaciation 2

Caribou Hills glaciation 2

Darling Creek glaciation 2

Delta glaeiation 2

Donnelly glaciation 2

Dry Creek glaciation 2

Echooka glaciation 2

Farewell glaeiation 2

Healy glaciation 2

Iron Creek glaciation 2

Itkillik glaciation 2

Johnston Hill glaciation 2

Mak Hill glaciation 2

Mount Osborn glaciation 2

Mount Susitna glaciation 2

Naptowne glaciation 2

Nikolai Creek glaciation 2

Nome River glaciation 2

Riley Creek glaciation 2

Sagavanirktok glaciation 2

Salmon Lake glaciation 2

Selatna glaciation 2

Swan Lake glaciation 2 

Mexico 

Quaternary

Mexicana stage 2 

Hawaii (Island of Hawaii) 

Pleistocene

Makanaka drift and stage 2

Pohakuloa drift and stage 2

Cenozoic (marine)

Eastern North America

The subdivisions listed below make up the only part of the standard Tertiary 

section of the Atlantic and Gulf Coastal Plain for which geographically 

derived names are given by Cooke and Gardner (in Cooke, Gardner, and 

Woodring, 1943, Chart 12):

fJackson [see Jackson formation * or group; Jacksonian 1 

I (Mississippi)]

Eocene <Clairborne [see Claiborne group 1 ; Claibornian * (Alabama)]

VWilcox [see Wilcox group * (Alabama)] 

Paleocene Midway [see Midway group >; Midway an * (Alabama)]
INDEX TO THE GEOLOGIC NAMES OF NORTH AMEBICA 419

Cenozoic (marine) Continued 

Eastern North America Continued

Other time units that have been used for parts of the Tertiary of eastern 

North America:

Atlantic and Gulf Coastal Plain 

Tertiary

f Alabama period * (Alabama)

{Atlantic group 1 (New Jersey-Florida)

fGulf group 1 (Alabama-Texas) 

Pliocene

fFloridian epoch l (Florida) 

Miocene and Pliocene

fSumter epoch 1 (South Carolina) 

Miocene

 Carolinian * (North and South Carolina) 

"Marylandian 1 (Maryland)

 Virginian * (Virginia) 

' Yorktown epoch 1 (Virginia) 

Oligocene

Vicksburgian l (Mississippi) 

Eocene

fChickasawan stage * (Mississippi) 

Caribbean region 

Miocene, late

Caimitoan stage * (Dominican Republic) 

Springvalean stage 2 (Trinidad) 

Oligocene

Stainforth (1953, p. 251) has recognized the use of the Antigua stage 

(middle Oligocene) and the Anguilla stage (late Oligocene). These 

stages are based on the Antigua and the Anguilla formations, from the 

islands of the same names, which are considered by other geologists to 

be of late Oligocene and early Miocene age, respectively. 

Sequence of microfaunal substages proposed for the middle and late Miocene 

of the central Atlantic Coastal Plain by Malkin (1953, p. 767-768): 

flat fYorktownian substage (Virginia) 

J iSt. Marysan substage (Maryland) 

< /Choptankian substage (Maryland) 

(.middle \Calvertian substage (Maryland) 

Western North America

Two sequences of stages are in use for the marine Cenozoic of western North 

America. The microfaunal stages are based on the chronologic occurrence of species or assemblages of species of foraminifera, believed to be 

independent of the lithic units in which they are found. The more or less 

informal megafaunal "stages" are based, according to Durham (1954, p. 23), 

on the distribution of species of megaf ossils, mainly mollusks and echinoids, 

within formations and sequences of formations from which the names of 

the "stages" are derived. The present arrangement is adapted from the 

marine Cenozoic correlation chart (Weaver and others, 1944, Chart 11), 

from later additions to the microfaunal sequence by Natland (1953) and by 

Mallory (1953; 1954; 1959), and from the charts of Durham, Kleinpell, and 

Savage (in Durham, 1954, p. 25) and Durham, Jahns, and Savage (1954,

E

. 60). The microfaunal stages proposed for the Pliocene nad Pleistocene 

y Natland have not been fully defined and have not yet been used as 

widely in publication as the microfaunal stages proposed for the Oligocene 

by Schenck and Kleinpell (1936) and for the Miocene by Kleinpell (1934; 

1935; 1938). The Paleocene and Eocene stages earlier proposed by 

Mallory were fully defined in 1959. The equivalence of the stages of the 

microfaunal and megafaunal sequences is fairly well established, but the 

adherents of the two time scales are not in complete agreement on correlation with the standard major Tertiary divisions. The disparity of the two 

correlations with the Tertiary divisions is graphically shown below. The 

spacing of the rules shows only the equivalence of the stages of the two 

scales; no indication of relative time span is intended. A partly dashed 

rule indicates doubt concerning precise correlation with the apposed stage. 

All type areas except those indicated are in California.

504,835 5® 2
420 GEOLOGIC NAMES OF NORTH AMERICA

Cenozoic (marine) Continued 

Western North America Continued

Microfaunal 

stages

Hallian stage

Wheelerian stage

Venturian stage

Repettian stage

Delmontian stage

Mohnian stage

Luisian stage

Relizian stage

Saucesian stage

Zemorrian stage

Refugian stage

Narizian stage

Ulatisian stage

Penutian stage

Bulitian stage

Ynezian stage

^Pleistocene

Pliocene <

.

'Miocene

>OUgocene

. 

.

 late 

middle Eocene < 

 early t

>Paleocene <

Megafaunal "stages"

Pleistocene

San Joaquin [see San Joaquin fm. 1

Etchegoin [see Etchegoin fm. *]

Jacalitos [see Jacalitos fm. *]

Neroly [see Neroly fm. l]

Cierbo [see Cierbo ss. *]

Briones [see Briones ss. J]

Tembler [see Temblor fm. x ]

Vaqueros [see Vaqueros ss. *]

Blakeley [see Blakeley fm. 1 (Wash.)]

Lincoln [see Lincoln fm. l (Wash.)]

Keasey [see Eeasey sh. 1 (Oreg.)]

Tejon [see Tejon fm. *]

"Transition beds"

Domengine [see Domengine fm. *]

Capay [see Capay fm. 1 ]

Meganos [see Meganos fm. 1 ; lower 

Eocene according to U.S. Geol. Survey 

usage]

Martinez [see Martinez fm. *]

Other Cenozoic time units that are in use or have been used in California: 

Pleistocene

Pedroian l

Red Bluff epoch l

San Pedran epoch l 

Pliocene and Quaternary

Sierran l 

Eocene, late

Fresnian stage 2 

Eocene, early

Juniperan stage a
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 421

Eocene

Paleocene

CenozoicJ(continental)

Provincial time scale for the North American continental Tertiary based on 

mammal-bearing units, according to Wood* and others (1941, pi. 1):

[Blancan age (Texas) 

Pliocene < Hemphillian age (Texas) 

[Clarendpnian age (Texas) 

Barstovian age (California) 

Miocene Hemingfordian age (Nebraska) 

Arikareean age (Nebraska) 

Whitneyan age (Nebraska) 

Oligocene Orellan age (Nebraska)

Tertiary Chadronian age (South Dakota)

Duchesnean age (Utah) 

Uintan age (Utah) 

Bridgerian age (Wyoming) 

Wasatchian age (Wyoming-Utah) 

Clarkforkian age (Wyoming) 

Tiffanian age (Colorado) 

Torrejonian age (New Mexico) 

Dragonian age (Utah) 

JPuercan age (New Mexico) 

Other continental Cenozoic ages and stages: 

North America 

Pleistocene

Rancholabrean age 2 (California) 

Irvingtonian age 2 (California) 

California

Pliocene (Clarendoniari) 

Montediablan stage a 

Cerrotejonian stage 2

MESOZOIC

The European stages listed below are commonly used for North America, and 

according to Longwell (1958, AGI 5) there is no other generally accepted classification. No standard American time classification is given for any of the periods 

or systems of the Mesozoic on the correlation charts prepared by the Committee on 

Stratigraphy of the National Research Council.

'Maestrichtian

Campanian

Santonian

Coniacian

Turonian

kCenomanian

'Albian

Aptian

Barremian \

Hauterivian I

Valanginian >Neocomian

Berriasian (Infra- I 

Valanginian) /

Purbeckian

Portlandian

Kimeridgian

Oxfordian

Callovian

Bathonian

Bajocian

Toarcian

Pliensbachian

Sinemurian

Hettangian

 We acknowledge advice on locally data from H. E. Wood, 2d chairman of the committee currently 

revising the continental time scale.

Cretaceous

Jurassic

Late

.Early

Late

Middle

Early

Senonian
422 GEOLOGIC NAMES OF NORTH AMERICA

Mesozoic Continued

[Rhaetian 

Late i Norian

[Carman (Karnian)

Triassic fLadinian

Middle \Anisian (Virglorian) 

Early /Scythian (Werfenian)

Cretaceous

The units listed below have been used or are currently in use for parts of the 

Cretaceous in the areas indicated. 

North America 

Late Cretaceous

Cordilleran system * 

Early Cretaceous

fComanchean system 1 (Texas) 

fShastan system l (California) 

Gulf Coastal Plain 

Late Cretaceous

Gulf series * (Texas) 

Early and Late Cretaceous

Comanche series > (Texas) 

Early Cretaceous

Coahuila series (as Coahuila group2) (Mexico) 

California and Oregon 

Early Cretaceous

Shasta series l (California)

Sequence of microfaunal stages proposed for the Late Cretaceous of California 

by Goudkoff (1945, p. 956-1007):

'Cheneyan stage ("pre-Martinez Paleocene or 

post-Moreno Cretaceous"; author favored 

Paleocene; placed here for convenient listing) 

Ciervian stage

Late Cretaceous Ingramian stage

Tracian stage 

Weldonian stage 

Cachenian stage 

^elevanian stage 

Jurassic

Triassic

No geographically derived names of time units based on faunal or physical 

criteria occurring in the Triassic and Jurassic rocks of North America have 

been recorded in the Lexicon files.

PALEOZOIC

A number of names have been proposed for units of great magnitude based on 

physical and faunal criteria occurring in the rocks of North America. Some of 

them were thought to be more appropriate for North America than the now 

standard major stratigraphie and time divisions, which are mainly of European 

derivation. With the exception of the Mississippian and Pennsylvanian systems, 

few of these units ever gained very wide acceptance, and none is in current use 

as a period or system. Some encompass parts or all of more than one of the 

Paleozoic periods or systems and are so listed below; the others are entered under 

the appropriate age. 

Paleozoic

Appalachian system l (Pennsylvania)

fNew York system 1 (New York) 

Devonian Mississippian

tBradfordian l (Pennsylvania-New York)

Chattanoogan series * (Tennessee)

Brian period l (New York)

fWaverlyan system 1 (Ohio)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 423

Paleozoic Continued

Silurian-Devonian

Monroan l (Michigan)

Yorkian period * (New York) 

Ordovidan Silurian

fOswegan period 1 (New York)

fHudson period > (New York) 

Cambrian Silurian

fMohawk system l (New York) 

Cambrian Ordovidan

Ozarkian system l (Missouri)

fPotsdam period 1 (New York)

fTaconic system l (New York-New England) 

Cambrian(l)

Hudson system l (New York)

fTaconian l (New York-New England)

Permian

The Permian series commonly in use as the standard sequence in central and 

southwestern United States (see Longwell, 1958, AGI 5) are typically developed in Texas and New Mexico to which they are restricted in use by the 

U.S. Geological Survey:

Ochoa series 2 (New Mexico) 

Guadalupe series [see Guadalupe group l (Texas)] 

' Leonard series [see Leonard formation 1 (Texas)]

Wolf camp series [see Wolf camp formation l (Texas)] 

Other units:

Central United States 

Permian

Big Blue series l (Kansas)

Cimmaron series [see under Cimmaron group l (Kansas)]

Minco division 2 (Oklahoma)

Wanette division > (Oklahoma)

Pennsylvanian

The type area of the Pennsylvanian system is in the northern Appalachian 

region in Pennsylvania, but a better standard section is in West Virginia 

(Moore and others, 1944, p. 665). The standard sequence for eastern North 

America, according to the Pennsylvanian correlation chart (Moore and 

others, 1944, Chart 6), given below, repeats the major stratigraphic divisions 

commonly used in the eastern United States, except that the Lee and the 

Kanawha series take the place of the division usually called Pottsville 

(p. 666).

'Monongahela series [see under Monongahela formation l (Pennsylvania)]

Conemaugh series [see under Conemaugh formation l (Pennsylvania)] 

Allegheny series [see under Allegheny formation l (Pennsylvania)] 

Kanawha series [see under Kanawha formation l (West Virginia)] 

kLee series [see Lee formation * or group (Virginia)]

The sequence given for central North America by Longwell (1958, AGI 5) is, 

with the exception of the Atoka series in place of the Lampasas series, the 

same sequence given by Moore and others (1944, Chart 6). They state 

(p. 666) that these series are used also in western North America and are 

thought to be applicable to the eastern United States and Canada as well. 

Their use as provincial series by the U.S. Geological Survey is restricted to 

the mid-Continent region:

Age according to U.S. 

Geol. Survey usage

'Virgil series l (Kansas) \ r , 

Missouri series [see Missouri group 1 (Missouri)]/ 

Des Moines series [see Des Moines group H

Atoka series [see Atoka formation» [ Middle

(Oklahoma)] J

Morrow series [see Morrow group 1 \ Farlu

(Arkansas)] / y
424 GEOLOGIC NAMES OF NORTH AMERICA

Pennsyivanian Continued

Other Pennsyivanian time units: 

Eastern United States 

Pennsyivanian

fPittsburg series l (Pennsylvania) 

Central United States 

Pennsyivanian

Kansas period 1 (Kansas) 

Late Pennsyivanian

Kawvian series (epoch) 2 (Kansas) 

Middle Pennsyivanian

Cygian substage 2 (Missouri) 

Oklan series (epoch) 2 (Oklahoma) 

Venteran substage 2 (Missouri) 

Early and Middle Pennsyivanian 

fBend series > (Texas) 

Ti Valley series 2 (Oklahoma) 

Early Pennsyivanian

Ardian series (epoch) * (Oklahoma) 

Lampasas series * (Texas) 

Pushmataha series 2 (Oklahoma) 

Southwestern United States 

Middle Pennsyivanian

Derry series 2 (New Mexico)

Mississippian

The type area of the Mississippian system is in the upper Mississippi and the 

lower Ohio valleys (Weller and others, 1948, Chart 6). The series listed below 

are given by Longwell (1958, AGI 5) for central North America and, except 

for the form of the names (i.e., Chesterian, etc.), the same series are given 

by Weller and others as the standard sequence for North America. Their 

use as provincial series by the U.S. Geological Survey is restricted to the

type Mississippian area.

Age according to U.S. Geol. Survey usage 

/Chester series [see Chester group 1 (Illinois)]

Meramec series [see Meramec group 

J (Missouri)] 

] Osage series [see Osage group * (Missouri)] 

I Kinderhook series [see Kinderhook group 1 

( (Illinois)]

Other Mississippian time units: 

Eastern United States 

Late Mississippian

fTennesseean system l (Tennessee) 

Central United States 

Mississippian 

Leeic period 2 (Iowa) 

Louisian 1 (Missouri) 

Valmeyer series 2 (Illinois)

Late

Early

Iowa series l (Iowa)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 425

Devonian

"Standard section" for North America according to the Devonian correlation 

chart (Cooper and others, 1942, Chart 4). Type areas, except those noted, 

are in the State of New York:

Bradfordian series (part)

[see fBradfordian 1

(Pennsylvania-New

York)]

Chautauquan series [see

Conewango stage [see Conewango series 1 

(Pennsylvania)]

Chautauquan group *]

Senecan series [see under 

Seneca limestone >]

Erian series [see Erie 

series J]

Ulsterian series [see Ulster 

group l]

iCassadaga stage 2

Chemung stage [see under Chemung

formation l] 

Finger Lakes stage 2 

Taghanie (Taughannock) stage 2 

Tioughnioga stage 2 

Cazenovia stage [see Cazenovia group l]

(Onesquethaw stage a

I Deerpark

1 HelderberL

I Helderbergian l]

Other Devonian time units: 

Eastern North America 

Middle Devonian

fHamilton period 1 (New York) 

Stroudsburgian stage 2 (Pennsylvania) 

Early Devonian

Oriskanian > (New York)

Silurian

Sequence of series for North America according to the Silurian correlation 

chart (Swartz and others, 1942, Chart 3):

Age according 

to U.S. Geol. 

Survey usage

'Cayugan series [see Cayugan, 1 Cayuga group * (New York);! i 

Cayuga series of the U.S. Geol. Survey] / 

Niagaran series [see Niagaran1 , Niagara series1 , Niagara! j

group l (New York)] J 

Albion series [see under Albion sandstone 1 (New York);' 

use of Albion by the U.S. Geol. Survey is currently 

restricted to Albion group; in the upper Mississippi 

Valley, the Survey uses Alexandrian series l (Illinois)] . 

Other Silurian time units: 

Eastern North America 

Silurian

fOntarian J (New York) 

Late Silurian

Salinan 1 (New York) 

Middle Silurian 

Anticostian 1 (Quebec) 

fLockport group l (New York) 

Early and Middle Silurian

fNiagara period x (New York) 

Early Silurian

Medinan 1 (New York) 

Central North America 

Middle Silurian

fChicago group l (Illinois)

Early
426 GEOLOGIC NAMES OF NORTH AMERICA

Ordovician

"Generalized standard section" according to the Ordovician correlation chart 

(Twenhofel and others, 1954, Chart 2):

Cincinnatian series l 

[see also Cincinnatic 

system l (Ohio); 

restricted in use by 

the U.S. Geol. Survey to Ohio, Indiana, Kentucky and 

Tennessee]

Champlainian series 

[see fChamplainian 

system * (New 

York)]

'Gamachian stage [see Gamachian series l

(Quebec)] 

Richmondian stage [see Richmond group l ;

Richmondian l (Indiana)] 

Maysvillian stage [see Maysville group 1

(Kentucky)]

Edenian stage [see Eden group l ; Edenian l 

. (Ohio)]

Trentonian stage 

[see under Trenton 

limestone or 

group ! (New 

York)] 

Black River stage

Mohawkian stage 

[see Mohawkian 

series l (New 

York); restricted 

in use by the U.S. 

Geol. Survey to 

New York] [see Black River 

group 1 (New 

York)] 

stage [see Chazy group l (New

fCanadian system

Chazyan 

York)] 

Canadian series [see under fCanadian series

(Quebec)] 

Other Ordovician time units: 

Eastern North America 

Ordovician

fChamplainic system l (New York) 

fNashvillean 1 (Tennessee) 

fTrenton period 1 ; Trentonian J (New York) 

Middle Ordovician

TJ«IQ »-«T, c,Q^-Q=, 2 nr-,.n,-~'oN/Hunterian subseries 2 (Pennsylvania) Bolanan series (Virginia)(Hatterian subseries * (Pennsylvania)

Chazyan l (New York)

Lincolnshirian stage * (Virginia) 

Early Ordovician

Beekmantownian 1 (New York)

Shenandoan l (Appalachian region)

Stonehengian division 2 (Pennsylvanian) 

Central and eastern North America 

Ordovician

Simpsonian series 2 (Oklahoma)

Cambrian

According to the Cambrian correlation chart for North America (Howell and 

others, 1944, Chart 1) no stages of the Early Cambrian were established and 

no stages in the Middle Cambrian satisfactorily denned. Dresbachian 

(Minnesota), Franconian (Minnesota) and Trempealeauan (Wisconsin) 

(ascending order), denned by the listed sequence of contained faunal zones, 

were given as stages covering the Late Cambrian. These are discussed and 

denned as stages of the Late Cambrian Croixan series by Bell, Berg, and 

Nelson (1956, p. 415-442).

Units listed below have been used or are currently in use: 

Eastern North America 

Late Cambrian

Bretonian 1 (Nova Scotia)

Johannian series '; Johannian 1 (New Brunswick) 

fPotsdamian > (New York) 

fSaratogan epoch or series 1 (New York) 

Middle Cambrian

Acadian series or epoch * (New Brunswick) 

Coldbrookian series 2 (Nova Scotia) 

Conasaugan series 2 (Georgia) 

Dugaldian series 2 (Nova Scotia)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 427

Cambrian Continued

Eastern North America Continued 

Early Cambrian

Etcheminian series 1 (New Brunswick) 

fGeorgian epoch or series l (Vermont) 

Labrador series 2 (Labrador) 

Hanfordian series * (New Brunswick) 

Placentia l (Newfoundland) 

Terra Nova 1 (Newfoundland) 

Upper Mississippi Valley 

Late Cambrian

St. Croixan series l ; Croixan 1 (Minnesota) 

Western North America 

Middle Cambrian

Albertan system 2 (Alberta) 

Bonnetian age and stage 2 (Nevada) 

Early Cambrian

Waucoban series > (California)

PRECAMBRIAN

(See also under Time terms of nongeographic origin)

Properly, Precambrian divisions should not be listed under time units. The 

perennial use of terms such as era, period, and system, reflects the desire of 

geologists to suggest by terminology the impressive magnitude of the Precambrian 

sequence and the long time-span necessary for the deposition of the sediments, the 

emplacement of the igneous rocks, subsequent metamorphism, and the development of notable unconformities. Criteria for consistent worldwide division of this 

vast expanse of time are inadequate. Stratigraphically significant paleontologic 

criteria, used for the rest of geologic time, have thus far not been discovered in 

Precambrian rocks. Radiogenic methods may eventually provide means for 

inter-regional correlation when there are enough of them, and with reduction of 

the margin of error in present techniques. Numeric dating, sometimes called the 

absolute age as opposed to relative age based on fossils, has been determined by 

radiogenic methods for numerous Precambrian rocks. Whereas this has upheld 

some lithologic correlations, the results have more commonly shown the unreliability of physical unity as a basis for time-stratigraphic correlation. As a 

result, in the current period of intensified radiogenic investigations, the use of 

time and time-stratigraphic (time-rock) divisions in the Precambrian of North 

America has declined. Among the authors who have discussed the problems of 

correlation and time divisions within the Precambrian are Leith (1934, p. 169), 

Grout and others (1951, p. 1020, 1063-1064), Wilson (1952, p. 201-202), Gill 

(1952, p. 57-67; 1955, p. 25-29; 1955a, p. 117-124), Woodring (1953, p. 1083), 

Rodgers (1954, p. 658), Knopf (1955, p. 698-699), and Dunbar and Rodgers 

(1957, p. 298).

Units more commonly used as standard (i.e., time-stratigraphic) divisions as 

well as those suggesting great rank are listed below. 

Greenland

Greenlandian 2

Ketilidian 2 

Northeastern United States

Atlantic period J or system ' (New Hampshire) 

Great Lakes and Canadian Shield regions

Algomic period J (Ontario)

t Algonkian period 1 or system 1 (Lake Superior region)

Anianic period 1 (Cloud-Cuckoo-Land)

Animikie series l ; Animikean l (Ontario)

Coutchiching series 1 (Ontario or Minnesota)

Grenville series 1 ; Grenvillian * (Ontario)

Haileyburian [see Haileyburnian ' (Ontario)]

Huronian series l ; Huronic period > (Ontario)

Keewatin series 1 (Minnesota)

Keweenawan series 1 (Michigan)

Knife Lake series l (Minnesota); Knife Lake group of U.S. Geological 

Survey

Labradorian l (Labrador)
428 GEOLOGIC NAMES OF NORTH AMERICA

Precambrian Continued

Great Lakes and Canadian Shield regions Continued 

Laurencic period x (Quebec) 

Laurentian epoch or series J (Quebec) 

Loganian l (Ontario) 

fMichigan period 1 (Michigan) 

Ontarian J (Ontario) 

Sudbury series 1 ; Sudburian l (Ontario) 

Superian era 2 (Lake Superior region) 

Superioric period 1 (Lake Superior region) 

Timiskamian series J (Ontario) 

Varennesic period l (Ontario) 

Cordilleran North America

Belt series '; Beltian system 1 (Montana) 

Bitterroot period J (Montana) 

Cherric period 1 (Montana) 

Connaughtic l

Grand Canyon series * (Arizona) 

Llano series 1 (Texas) 

Madisonic period J (Montana) 

Selkirkian period J (British Columbia) 

fTexian system 1 (Texas) 

Uncompahgran system l (Colorado)
ROCK UNITS

The names of the rock units are listed once only in the geographic area that 

contains, or is assumed to contain the type area or locality. The symbols used 

are explained on page 413.

United States 

Alabama

Quaternary (f)

Buttahatchie gravel 1 

Pleistocene

Conecuh sands * 

fGeneva sands 1 

f Mobile Bay formation J 

Mon Louis formation l 

fOzark sands 1 

Tertiary

t Alabama white limestone l 

Pliocene

Citronelle formation l 

Miocene (f)

Roberts sand J 

Miocene, lower

Paynes Hammock sand 2 

Oligocene, middle

Glendon limestone 1 member (of

Byram formation) 

Eocene

fTombigbee l (formation) 

Eocene, upper, and Oligocene

fSt. Stephens division lt formation, 1 group, 1 or limestone J 

Eocene, upper

Cocoa sand member (of Yazoo 

clay); (as member of Jackson 

formation J) 

Dellet sand member (of Moodys

Branch marl) 2 

North Creek member (of Yazoo clay) * 

Pachuta marl member (of Yazoo clay) 2 

Shubuta member (of Yazoo

clay) 2

Shubuta Hill clay « 

Eocene, middle

fChoctaw buhrstone l 

Claiborne group 1 

fClaiborne sand 1 

Gosport sand l 

Lisbon formation l 

Tallahatta formation 1 

Eocene, lower

Bashi marl member (of Hatchetigbee formation); (as formation i)

fBashi marl l 

Bells Landing marl member (of

Tuscahoma sand) 1 

fBells Landing series l 

JFort Gaines l (formation) 

Grampian Hills member (of 

Nanafalia formation) 2

tG 

Gi

United States Continued 

Alabama Continued

Eocene, lower Continued

Greggs Landing marl member

(of Tuscahoma sand) l 

Greggs Landing series 1 

"ullette Bluff beds 1

Hatchetigbee formation 1

Nanafalia formation 1

fNanafalia marl 1

Salt Mountain limestone 1

fTuscahoma marl l

Tuscahoma sand l or formation

Wilcox group 1 or formation

fWoods Bluff group or series * Woods Bluff marl (in Bashi formation) l 

Paleocene

fBlack Bluff group, clay or 

series l

Chattahoochee l (formation)

Clayton formation 1

Coal Bluff member (of Naheola 

formation); (as beds or series J)

McBryde limestone member (of 

Clayton formation) *

fMatthews Landing group or 

series l

Matthews Landing marl 1

Midway formation or group l

f Midway series or limestone l

Naheola formation l

fNaheola marl l

fOak Hill-Pine Barren group l

Oak Hill member (of Naheola 

formation)2

Pine Barren member (of Clayton 

formation); (as beds J)

fRutledge limestone !

fSucarnoochee clay 1 

Upper Cretaceous

Arcola limestone member (of 

Mooreville chalk) *

Coker formation 2

fCottondale formation 2

Demopolis chalk (as division l)

Eoline member (of Coker formation) 2

fEufaula sands l

Eutaw formation l

Gordo formation 2

McShan formation 2

Perote member (of Providence 

sand) *

fPortland division (of Selma 

chalk)2

429
430 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Alabama Continued

Upper Cretaceous Continued 

Prairie Bluff chalk * 

Selma chalk l or group 

fSelma division (of Selma chalk) 1 

fTombigbee chalk 1 

Tuscaloosa formation,1 gravel, or

group 

Lower Cretaceous

Vick formation 1 

Paleozoic (see also Precambrian or

Paleozoic) 

Dempsey marble 1 (in Talladega

slate) 

Probably Paleozoic

Jumbo dolomite member (of

Talladega slate) 1

Probably Paleozoic (pre-Devonian) 

Butting Ram sandstone member

(of Talladega slate) 1 

Cheaha sandstone member (of

Talladega slate) l 

Post- Carboniferous

fBluff Springs granite 1 

Millerville green schist 1 

Pinckneyville granite 1 

Post-Carboniferous (?) 

Hillabee chlorite schist 1 

Iwana green schist l 

Carboniferous (see Precambrian to

Carboniferous; and Cambrian

to Carboniferous)

Carboniferous (probably Lower Pennsylvanian) 

Erin shale l 

Pennsylvanian

Black Creek coal group l

Brookwood coal group *

Cobb coal group l

Dogwood coal group l

Fayette gas sand l (subsurface)

Gould coal group 1

Gwin coal group 1

Horse Creek coal group (in

Pottsville formation) 1 

Mary Lee coal group 1 

fMontevallo conglomerate 1 

Nunnally coal group 1 

Pratt coal group 1 

fSand Mountain conglomerate 1 

Straven coal group x 

Lower Pennsylvanian

Boyles sandstone member (of

Pottsville formation) l 

Bremen sandstone member (of

Pottsville formation) l 

Camp Branch sandstone member

(of Pottsville formation) 1 

Chestnut sandstone member (of

Pottsville formation) 1 

Lick Creek sandstone member

(of Pottsville formation) 1 

Lookout sandstone 1 

Pine sandstone member (of

Pottsville formation) l

United States Continued 

Alabama Continued

Lower Pennsylvanian Continued

Razburg sandstone member (of 

Pottsville formation) l

Rocky Ridge sandstone member 

(of Pottsville formation) 1

Shades sandstone member (of 

Pottsville formation) l

Straight Ridge sandstone member (of Pottsville formation) 1

Straven conglomerate member 

(of Pottsville formation) 1

Wolf Ridge sandstone member

(of Pottsville formation) 1 

Mississippian

Burgess oolite (in Bangor limestone) l

Dorans Cove sandstone l

' 'Huntsville l (formation)

 La Grange sandstone l

 Lauderdale chert l

"Monte Sano limestone; also

group *

fOxmoor sandstone and shales 1 

Rockwood oolite l 

Spout Spring oolite (in Bangor

limestone) 2 

Upper Mississippian 

Allsboro sandstone J 

Alsobrook member (of Pride 

Mountain formation); (as formation J)

Bangor limestone l 

Floyd shale 1 (see p. 622) 

Hartselle sandstone 1 

Little Shades sandstone member

(of Parkwood formation) 2 

Parkwood formation 1 

Pride Mountain formation (S.W. 

Welch, 1958, U.S. Geol. Survey 

Oil and Gas Inv. Chart OC-58) 

Southward Bridge formation l 

Southward Pond formation l 

Tuscumbia limestone 1 

Lower Mississippian 

Fort Payne chert l 

Devonian (see also Cambrian 

Devonian)

Yellow Leaf quartz schist 1 

Middle Devonian

Ragland sandstone 1 

Lower or Middle Devonian

Frog Mountain sandstone 1 

Lower Devonian

Clear Branch sandstone 1 

Jemison chert 1 

Silurian (see also Cambrian 

Devonian)

Red Mountain formation 1 

Ordovician (see also Cambrian 

Devonian)

fPelham limestone l 

Middle Ordovician 

Little Oak limestone 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 431

United States Continued

Alabama Continued

Lower Ordovician

Attalla chert conglomerate member (of Chickamauga limestone) l

fBirmingham breccia 1

Chepultepec dolomite 1

Longview limestone ' or dolomite

Newala limestone l or formation

Odenville limestone 1

fSalem breccia 1 

Cambrian to Carboniferous

Wedowee formation J 

Cambrian-Devonian

fRed Mountain group J 

Upper Cambrian

Bibb dolomite 1

Brierfield dolomite 1

Ketona dolomite l 

Middle and Upper Cambrian

fCoosa shale J

JFlatwoods shale l 

Middle or Upper Cambrian

fAldrich limestone J 

Lower Cambrian

jChoccolocco shale l

Ladiga sandstone J

jMontevallo formation 1

Weisner quartzite or formation l 

Precambrian to Carboniferous

Talladega slate J or formation 

Precambrian or Paleozoic

Brewer phyllite (as member of 

Talladega slate *)

Sawyer limestone member (of 

Waxahatchee slate ')

Sylacauga marble member (of 

Talladega slate 1 )

Wash Creek slate J

Waxahatchee slate 1 

Precambrian

Ashland mica schist 1

Chewacla marble 1

HoIIis quartzite l

Lundy Mountian type 1 (mica

schist) 

Age(?)

Sougahatchee granite 1 

Alaska

Quaternary (see also Tertiary and 

Quaternary)

Arch Point basalt 2

Black Point basalt 2

Dushkin basalt *

East Cape volcanics 2

Little Pavlof agglomerate 2

Mount Emmons volcanics 2

Mount Hague volcanics 2

Okmok volcanics 2

Pavlof volcanics 2

Pavlof Sister volcanics 2

Tanak volcanics 8

Volcano Bay basalt flow 2 

Quaternary^)

Buldir volcanics 2 I

United States Continued 

Alaska Continued 

Pleistocene or Recent

Crater Creek basalt 3 

Pleistocene (see also Pliocene or 

Pleistocene)

Bristol Bay silts and gravels 1

Cook Inlet gravels 1

Copper River silts and gravels J

Ester ash bed 2

Flaxman formation 1

Gubik formation (as sand J)

Kanektok silts and gravels l

Eowak clay 1

jKuskokwim gravels and silts J

Togiak gravels l

Yukon silts l 

Tertiary and Quaternary

Ashishik basalt 8

Great Sitkin volcanics 2

Idak basalt 2

Tulik basalt -

Tertiary (see also Cretaceous or 

Tertiary)

Andrew Bay volcanics 2

Hayes River beds 1

Holokuk basalt 2

Nenana gravel l

Porcupine beds J

Sand Bay volcanics 2

Twelvemile beds J

Waterboot basalt 2

jYentna beds J

Zeto Point basalt porphyry 2 

Tertiary (?)

Tok sandstone 1 

Tertiary, upper, to Recent

Wrangell lava J 

Tertiary, upper

Belkofski tuff 2

Cathedral Valley agglomerate 2 

Tertiary, lower

Sagavanirktok formation 2 

Pliocene or Pleistocene

Pinnacle J (system) 

Pliocene

Nuwok formation 2 

Pliocene(?)

Palisades conglomerate ! 

Miocene or Pliocene

Nushagak formation 1 

Miocene and Pliocene(f)

Yakataga formation 

Miocene

Unga conglomerate 1 

Miocene(?)

fEska conglomerate l 

Oligocene or Miocene

Meshik formation l 

Oligocene and Miocene

Poul Creek formation > 

Oligocene

Basin Creek member (of Katalla 

formation) 3
432 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Alaska Continued 

Oligocene C ontinue d

Burls Creek shale member ' (of 

Katalla formation)

Eat all a formation 1

Puffy member (of Katalla formation) ; (as member of Redwood 

formation l)

Redwood formation 1 

Oligocene, Upper

Point Hey member (of Katalla 

formation); (as member of 

Redwood formation l) 

Oligocene, lower and middle

Split Creek sandstone member '

(of Katalla formation) 

Eocene

Getmuna rhyolite group 2

Eushataka formation '

Stepovak series J

Stillwater formation 1

Tokun formation '

Tyonek formation J 

Eocene, upper

Gakona formation 1

Eenai formation ' 

Eocene or Paleocene(?)

Chickaloon formation 1 

Paleocene(?) or Eocene, lower (f)

Wishbone formation 2 

Mesozoic, Tertiary, and Carboniferous^)

fOklune series * Mesozoic (see Paleozoic and Mesozoic) 

Mesozoic(?)

Cedar Bay granite 1

Eshamy granite l

Nellie Juan granite 1 

Upper Mesozoic(?)

Orca group '

Valdez group 1 

Cretaceous or Tertiary

Agattu beds 2

Cretaceous (see also Jurassic or Cretaceous)

fCape Beaufort coal measures J 

Upper Cretaceous and Paleocene(?)

Iditarod basalt 2 

Upper Cretaceous

Cantwell formation 1

Chignik formation 1

Colville group (as series !)

fHoliknuk series l

Ealtag formation 1

Eogosukruk tongue (of Prince 

Creek formation) 2

Matanuska formation 1

Melozi formation J

Niakagon tongue (of Chandler 

formation) 2

Nulato formation 1

Prince Creek formation 2

Schrader Bluff formation 2

Seabee formation 2

United States Continued 

Alaska Continued

Upper Cretaceous Continued

Sentinel Hill member (of Schrader Bluff formation) 2

Shaktolik group l

Thetis group J

fTuluga member (of Schrader 

Bluff formation) 2

Tuluvak tongue (of Prince Creek 

formation) 2

Ungalik conglomerate 1 

Upper(?) Cretaceous

Bergman group 1

Yakutat group ' 

Lower and Upper Cretaceous

Chandler formation 2

Corwin formation 1

Ignek formation 1

Euskokwim group 2

Nanushuk group (as formation1) 

Lower Cretaceous

Anaktuvuk group 1

fHatbox tongue (of Chandler 

formation) 2

Herendeen limestone l

Eandik formation 1

Eennicott formation l

Eoyukuk group l

Nelchina limestone 1

Okpikruak formation 2

Staniukovich shale l

Topagoruk formation 2

Torok formation 2

Tuktu formation 2 

Lower and Lower (?) Cretaceous

fUmiat formation 2 

Lower Cretaceous(?)

Jualin diorite l 

Lower Cretaceous to Carboniferous(?)

Gemuk group 2 

Cretaceous and Jurassic(f)

Susitna slate l 

Jurassic, Cretaceous, and Tertiary

f Matanuska series l 

Jurassic or Cretaceous

Boundary granodiorite 1

Coast Range intrusives 1

Hyder quartz monzonite l

Eotsina conglomerate :

Texas Creek granodiorite l 

Jurassic(f) to Lower Cretaceous(f)

Douglas Island volcanic group '

Treadwell slate 1 or formation

Skwentna group 1 

Upper Jurassic 

Chinitna shale 1, siltstone, or

formation 

Chisik conglomerate member (of

Naknek formation) l 

fKatmai series J 

Naknek formation l 

Pomeroy member (of Naknek

formation) 2 

Sheilikof formation 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 433

United States Continued 

Alaska Continued

Upper Jurassic Continued 

Tiglukpuk formation 2 

Tonnie siltstone member {of

Chinitna formation) 2 

Middle and Upper Jurassic

fEnochkin formation J 

Middle Jurassic

Bowser member (of Tuxedni

formation) 2 

Cynthia Falls sandstone member

(of Tuxedni formation) 2 

Gaikema sandstone member (of

Tuxedni formation) 2 

Eialagvik formation l 

Tordrillo formation l 

Tuxedni formation (as sandstone l) 

Lower-Upper Jurassic

Eingak shale l 

Lower or Middle Jurassic(?)

Thane volcanic group 1 

Lower Jurassic 

Aleuts member (of Kialagvik

formation) 2 

Bidarka formation 2 

Kolosh member (of Kialagvik

formation) 2 

Talkeetna formation ' 

Triassic, Jurassic, and probably

Paleozoic

fBerners formation 1 

Triassic

Skolai volcanics l 

Upper Triassic and Jurassic or

Cretaceous 

fGravina series J 

Upper Triassic (see also Carbon

iferous and Upper Triassic) 

Chitistone limestone 1 

Gastineau volcanic group 1 

Eamishak formation (as chert l) 

Euskulana formation 1 

McCarthy shale or formation J 

Nabesna limestone ' 

Nizina limestone l 

Middle and Upper Triassic

Shublik formation l (see p. 621) 

Triassic or older

Perseverance slate 1 

Paleozoic, Cretaceous, and Tertiary

Mission Creek series 1 

Paleozoic and Mesosoic

fSunrise group * or series * 

Paleozoic and infolded Triassic(?)

Clark Peak schist l 

Paleozoic (see also Precambrian or 

Paleozoic; and Precambrian 

and Paleozoic) 

Eanuti group 1 

Paleozoic(J) and Tertiary (?)

Finger Bay volcanics 2 

Paleozoic(f)

Esther granite 1 

Sheep Bay granite 1

United States Continued 

Alaska Continued

Upper Paleozoic to Tertiary (?)

fKolmakof series l 

Lower Paleozoic

William Henry Bay marble 2 

Lower Paleozoic(?)

fTotsen group l or series J 

Lower Paleozoic or older

Eigluaik group 1

fLake quartzite schist J

Nome group l

fRapids schist 1

Tigaraha schist 1 

Permian and Lower Triassic

Saderochit formation (as sandstone l) 

Permian and Triassic(?)

Nikolai greenstone 1 

Permian

Mankomen formation 1

Tahkandit limestone ' 

Pre-Permian

Jacksina formation J 

Pre-Permian (?)

Monte Cristo diorite * 

Carboniferous and Upper Triassic

fKetchikan series > 

Carboniferous (see also Silurian, 

Devonian, and Carboniferous)

Ahtell diorite >

Chisna formation :

Suslota limestone l

Tetelna volcanics 1 

Carboniferous and older, and 

Jurassic

fNutzotin series J 

Carboniferous or older

Elutina group * 

Pennsylvanian(?)

Nation River formation ' 

Mississippian

Dadina schist 1

Lisburne group (as limestone :)

Livengood chert 1

Strelna formation 1

Wellesley formation l 

Mississippian(?)

Totatlanika schist l 

Upper Mississippian

Calico Bluff formation ' 

Lower Mississippian

Circle volcanics 1

Mississippian (probably Lower Mississippian)

Rampart group 1 

Devonian and Mississippian

Noatak sandstone (as formation l) 

Devonian, Mississippian, and 

Silurian (?)

fFickett series 1

Devonian (see Silurian, Devonian, 

and Carboniferous', and Lower 

and Upper Ordovidan, Silurian, and Devonian)
434 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Alaska Continued 

Devonian (f)

fKasaan greenstone l

Kuzitrin formation 1 

Upper Devonian or Mississippian

West Fork formation l 

Upper Devonian

Kanayut conglomerate (A. L. 

Bowsher and J. T. Dutro, Jr., 

1957, U.S. Geol. Survey Prof. 

Paper 303-A, pt. 3, p. 3, 5, 

7-12, figs. 2, 3, 4.)

Stuver member (of Kanayut

conglomerate); (as series l) 

Upper Devonian or older

Neurokpuk formation (as schist') 

Middle Devonian

Salmontrout limestone 1

Takotna formation J

Vallenar formation l

Woodchopper volcanics l 

Pre-Devonian

Mentasta schist J

Silurian, Devonian, and Carboniferous

Tonzona group l 

Silurian

fBettles group l or series J

Skajit limestone l

Tolovana limestone ' 

Middle or Upper Silurian

Holitna group 2 

Post-Ordovidan (?)

Hurrah slate J

Puckmummie schist l 

Ordovician, Silurian, and Devonian (?)

fKugruk group 1

Terra Cotta series 1 

Ordovician and Silurian

Porcupine group l 

Ordovician and Silurian(f)

Tatina group l 

Ordovician(?)

Sowik limestone l 

Middle Ordovician

Fossil Creek volcanics 1 

Lower and Upper Ordovician, Silurian, and Devonian

Port Clarence limestone 1 

Pre-Ordovician to Devonian

Wales group J 

Pre-Ordovician (?)

Solomon schist 1 

Precambrian or Paleozoic

Casadepaga schist 1 

Precambrian and Paleozoic

tPortymile group or series l

fKotlo series J

fNasina group J or series 1 

Precambrian and Lower Cambrian (?)

Tindir group *

United States Continued 

Alaska Continued

Precambrian, Cambrian(?), and 

Lower Ordovician

fTatalina group J 

Precambrian

Birch Creek schist l

Fortymile granite l

Nilkoka group 1

fTanana schist J

Yukon group l 

Age(?)

Coast Range diorite *

Copper Mountain greenstone or 

amphibolite schist J

St. Elias schist l 

Arizona 

Cenozoic

Bonita Park formation 2

Cave Creek formation 2

Faraway Ranch formation 2

Rhyolite Canyon formation 2

Sugarloaf series (see p. 622) 

Cenozoic(?)

Atascosa formation 2

Blacktail formation 2

Montana Peak formation 8 

Quaternary

Blue Mountain gravel *

Cameron beds (of Tolchaco 

gravels) *

Jeddito formation 2

Naha formation 2

Robbers Roost gravel 2

Tolchaco gravels 2

Tsegi formation 2 

Pleistocene

Chemehuevi formation (as gravel !) 

Pleistocene, lower

Temple Bar conglomerate 1 

F^re-Pleistocene

Frazier Well gravel 2 

Tertiary or Pleistocene

Cornfield series l

Ganado series l

Sunrise Springs series 1

White Cone series J 

Tertiary (see also Cretaceous or 

Tertiary)

Beehive rhyolite 2

Big Wash andesite 2

Bull Mountain andesitic series 2

Camelback formation 2

Cat Mountain rhyolite 8

Galiuro rhyolite l

Kingman series 2

Murdock breccia 1

Rillito andesite 2

Safford dacite 2

Saflford tuff 2

Shorts Ranch andesite 2

Warrens Ranch latite 2 

Tertiary(?)

Antelope rhyolite 1

Whitetail conglomerate *
INDEX TO THE GEOLOGIC NAMES OF NOBTH AMERICA 435

United States Continued 

Arizona Continued

Tertiary(?) (pre-Pliocene)

Tassai Wash group 2 

Probably Tertiary

Schultze granite 1 

Tertiary, upper

Greggs breccia J

Nogales division J 

Tertiary, middle or upper

Alcyone trachyte !

Cottonwood rhyolite 1

Esperanza trachyte l

Flag Spring trachyte l

Gold Road latite '

Meadow Creek trachyte 1

Moss porphyry '

Oatman andesite 1

Sitgreaves tuff J

Times porphyry 1 

Tertiary, middle (?)

Ajo volcanics 3

Daniels conglomerate 2

Locomotive fanglomerate 2

Sneed andesite 2 

Tertiary, lower (?)

Cornelia quartz monzonite 2

Granite Mountain porphyry l

Teapot Mountain porphyry l 

Pliocene(?) or Pleistocene

Verde formation 1 

Pliocene and Pleistocene

Gila conglomerate l

San Pedro Valley formation 2 

Pliocene

Bidahochi formation l

San Pedro group 2 

(?) Pliocene

Batamote andesite 2

Childs latite 2

Hualpai limestone 2 

Pliocene, upper (?)

Sandtrap conglomerate 2 

Pliocene, lower or middle

Milk Creek beds 3 

(?) Pliocene, lower

Chapin Wash formation 2

Cobwebb basalt 2 

Miocene, upper

Duncan group 2 

Eocene (?) to lower Pliocene (?)

Stronghold granite 2 

Eocene, lower(?)

Artillery formation 2 

Laramide

Amole granite 2

Amole latite 8

Amole quartz monzonite 2 

Mesosoic

Oro Blanco conglomerate 2 

Mesozoic(f)

Chico Shunie quartz monzonite

Ithaca Peak granite 2

Pajarito lavas 2 

Mesozoic, lower(?)

Lost Gulch monzonite l

504835 69 3

United States Continued 

Arizona Continued 

Cretaceous or Tertiary

Sugarloaf quartz latite (seep. 622) 

Cretaceous or lower Tertiary

Bronco volcanics 2 

Cretaceous

Recreation red beds 2 

Cretaceous(?)

Canelo redbeds 2 

Upper Cretaceous or Tertiary

Schieffelin granodiorite 2 

Upper Cretaceous or lower Tertiary

Solitude granite l

Uncle Sam porphyry 2

Willow Spring granodiorite (as

granite l) 

Upper Cretaceous

Amole arkose 2

Fort Buchanan formation 2

Fort Crittenden formation 2

Orabai sandstone J

Pinkard formation 1

Santa Cruz group 2

Sonoita group 2

Zilhlejini formation J 

Upper Cretaceous (?)

Concentrator volcanics 2 

Lower Cretaceous

Arkill limestone (in Saavedra 

member of Lowell formation) 2

Baga shale and limestone (in 

Joserita member of Lowell 

formation) 2

Barata limestone (in Saavedra 

member of Lowell formation) 2

Barberian series 2

Bis bee group '

Black Knob dolomite (in Pacheta 

member of Lowell formation) 2

Black Knob quartzite (in Pacheta 

member of Lowell formation) 2

Chapparal sandstone (in Saavedra member of Lowell formation) 2

Cholla member (of Lowell formation) 2

Cienda limestone (in Pacheta 

member of Lowell formation) 2

Cintura formation l

Cinturan series l

Cochise limestones l

Corta sandstone (in Joserita 

member of Lowell formation) 2

Dixie shale J

Espinal grit (in Joserita member 

of Lowell formation) 2

Forrest shale J

Glance conglomerate '

Hay Flat limestone 2

Joserita member (of Lowell formation) 2

Lancha limestone (in Pacheta 

member of Lowell formation) 2

Lowell formation 2

Mexican sandstone l
436 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Arizona Continued

Lower Cretaceous Continued

Molly Gibson formation 2

Mule sandstone l

Mural limestone 1

Muralian series l

Outlaw formation 2

Pacheta member (of Lowell formation) 2

Patagonia group 2

Pedregosa member (of Lowell 

formation) 2

Perilla member (of Lowell formation) 2

Quajote member (of Lowell formation) 2

Quimbo dolomite (in Joserita 

member of Lowell formation) 2

Saavedra member (of Lowell formation) 2

Sacramento Hill porphyry 2

Tusonimo limestone (in Pacheta 

member of Lowell formation) 2 

Lower Cretaceous (?)

Contention series l

Herschel quartzite 1

Randolph limestone J

Toughnut series * 

Jurassic

Arido sandstone l

Lohali sandstones l

Nutrian series J

Tyende sandstone * 

Jurassic and Jurassic(?)

Navajo sandstone 1 

Jurassic and older (?)

f Painted Desert formation l 

Jurassic(f)

t White Mesa sandstone l 

Upper Jurassic

Cow Spring sandstone 2 

Lower Jurassic(?)

Kayenta formation ' 

Upper Triassic

Chinle formation '

fLeroux formation J

Nazlini shales l

Newspaper Rock sandstone 2

Ventana sandstones l 

Upper Triassic(?)

Dinosaur Canyon sandstone member (of Moenave 

formation) 2

Moenave formation 2 

Lower and Middle(f) Triassic

Moenkopi formation 1

fMoenkopian series * 

Lower Triassic

Adamana shales l

Agathla sandstone 1

Agathla shale J

Holbrook sandstone l

Moqui member (of Moenkopi 

formation) 2

United States Continued 

Arizona Continued

Lower Triassic Continued

Rock Canyon conglomerate member (of Moenkopi formation) 1

Salt Creek member (of Moenkopi 

formation) l

Tanner shale l

Tolchico shale J

Winslow member (of Moenkopi 

formation) 2

Winslow shale J

Wupatki member (of Moenkopi

formation) 2

Permian (see also Pennsylvania and 

Permian)

f Aubrey limestone *

fAubrey sandstone J

Chiquito sandstones *

Chiricahua limestone l

Coconino sandstone 1

Colina limestone 2

Concha limestone 2

De Chelly sandstone member 

(of Cutler formation) *; locally sandstone in Arizona

Epitaph dolomite 2

Esplanade sandstone member 

(of Supai formation) J

Fort Apache limestone (in Supai 

formation) l

Havasupai sandstones J

Hermit shale l

Eaibab limestone '

Eanishba beds (in Supai formation) i

t Monument Valley shale *

Rainvalley formation 8

Scherrer formation 2

SeUgman limestone l

Shiwits shale l

Snyder Hill formation l

Toroweap formation 2

Wompats limestone l

Yampai sandstone l 

Lower Permian

Pakoon limestone 2

Queantoweap sandstone a 

Carboniferous

Aubreyan series * Kanab limestone x Malagan series 2

Mescaleran series 2

Supaian series J

Tusayan series *

Verdan series l 

Pennsylvanian and (or) Permian

Amos Wash member (of Supai 

formation) 2

Corduroy member (of Supai

formation) 2 

Pennsylvanian and Permian

Andrada formation 2

Aubrey group 1

Naco limestone,1 formation, or 

group
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 437

United States Continued 

Arizona Continued

Pennsylvanian and Permian Con.

Supai formation J

Pennsylvanian (see also Misissippian and Pennsylvanian)

fGaliuro limestone J

Horquilla limestone 2

Oak Creek member (of Supai 

formation) 2

Packard Ranch member (of Supai

formation) 2 

Pennsylvanian(f)

Huethawali limestone l

Pierce shales l 

Upper Pennsylvanian

Earp formation 2 

Mississippian and Pennsylvanian

Tuje Spring limestone l 

Mississippian

Elden limestones J

fGray Cliff limestone l

Simon limestone 1

Truxton limestone 1 

Upper Mississippian or Lower 

Pennsylvanian(?)

Black Prince limestone 2 

U pper JxL issTSSzppian

Paradise formation l 

Lower Mississippian and Lower 

Pennsylvanian

fTornado limestone l 

Lower and Upper (?) Mississippian

Escabrpsa limestone l 

Lower Mississippian

Modoc limestone 1

Redwall limestone 1 

Devonian and Carboniferous

fGlobe limestone J 

Devonian

East Verde limestone a

Escacado limestone 2

Espinal formation 2

O'Carroll member (of Martin 

limestone) 2

Patagonia h'mestone 2

Picacho de Calera formation l

Tombstonian series 2

Vecol limestone a 

Upper Devonian

Crook formation 2

Island Mesa beds *

Jerome formation * Martin limestone 1 in southeast 

Arizona; as formation in northeast Arizona; and as Middle (?) 

and Upper Devonian formation 

in central Arizona.

Morenci shale 1

Mount Elden formation 2

Sycamore Creek sandstone * 

Upper(f) Devonian

Temple Butte limestone 1 

Middle(f) Devonian

Santa Rita limestone 1

Santa Ritan series l

United States Continued 

Arizona Continued 

Ordovidan(f)

Lucky Cuss limestone 1 

Upper Cambrian and Lower Ordovician

Longfellow limestone l 

Upper Cambrian

t Apache sandstone l

Copper Queen limestone l

Coronado quartzite l

Peppersauce Canyon sandstone l

Rincon limestone J 

Middle or Upper Cambrian

fEmerald limestone 1

{Emerald series J 

Middle and Upper Cambrian

Abrigo limestone 1 or formation 

Middle Cambrian

fAjax quartzite l

Bright Angel shale :

Bolsa quartzite l

Chediski white sandstone member (of Troy quartzite)l

Cochise formation J

fDragoon quartzite 1

Havasu member (of Muav formation) 2

Mead limestone 2

Muav limestone 1

Pima sandstone J

Santa Catalina formation 1

Southern Belle quartzite l

Tonto group 1

fTonto limestone l

fTonto sandstone l

JTonto shale l

Tontoan series '

Troy quartzite i

Yaquian series a Whetstonian series 2 

Lower and(or)-Middle Cambrian

Boucher tongue 2

Elves Chasm tongue 2

Flour Sack member (of Bright 

Angel shale) 2

Garnet Canyon tongue 2

Gateway Canyon member (of 

Muav formation) 2

Kanab Canyon member (of 

Muav formation) 2

Lava Falls tongue 2

Meriwitica tongue 2

Parashant tongue 2

Peach Springs member (of Muav 

formation) 2

Rampart Cave member (of Muav 

formation) 2

Sanup Plateau member (of Muav 

formation) 2

Spencer Canyon member (of 

Muav formation) 2

Tincanebite tongue 2 

Lower Cambrian

Tapeats sandstone 1
438 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Arizona Continued 

Precambrian

Aguja sandstone 2 

Alder group 2 

Apache group l 

f Arizona slates * 

Barnes conglomerate l 

Bass limestone l 

Bradshaw granite ' 

Carbon Butte shales 2 

Cardenas lava series 2 

Cerbat complex 2 

Chuar group 1 

Chuarian series l 

City Creek series 2 

Cleopatra quartz porphyry 1 

Chiquito sandstone 2 

Crooks complex ' 

Deadman quartzite 2 

Deception porphyry l 

Diana granite 2 

Dox sandstone J 

Dripping Spring quartzite l 

Echo limestone or formation 

Final shales 2 

fGrand Canyon group J 

fGrand Canyon schist l 

Grand Canyon series ' 

Gunther dolomite 2 

Hakatai shale l 

Hotauta conglomerate l 

Katherine granite 1 

Jupiter shales 2 

Kwaguntan series 2 

Madera diorite l 

Marble limestone 2 

Maverick shale 2 

Mazatzal quartzite 1 

Mescal limestone 1 

Mount Ord pyroxenite 2 

Nankoweap group 2 

Newberry formation 2 

Nunkoweap sandstone 2 

Oracle granite 2 

Oso beds 2 

Oveja formation 2 

Phantom migmatite 2 

Final schist 1

Pine Mountain porphyry * 

Pioneer shale l 

Red Rock rhyolite 2 

Roosevelt member 2 

Ruin granite l 

Santa Catalina gneiss J 

Scanlan conglomerate 1 

Shea diabase 2 

Shinumo quartzite 1 

Solitude limestone 2 

United Verde diorite J 

Unkar group l 

Venus formation 2 

Vishnu schist l 

Vishnuan series l 

Walhalla formation 2 

Yavapai schist l or series

United States Continued 

Arizona Continued

Precambrian Continued

Yeager greenstone 2

Zoroaster granite 2 

Precambrian(?)

Cardigan gneiss 2

Chloride granite2 

Age(?)

Luck-Sure series l

Mesa formation 1

Ruby diorite 2

Ruby Road formation 2

Silver King quartz monzonite 

porphyry 2

Tappan lava flow 2

Arkansas 

Quaternary

Plateau gravel phase J 

Pleistocene

Carrigan black sands l 

Center Point division J 

Prairie d'Ane clay l 

Prairie de Roan division 1 

Red River loess l 

White Prairie d'Ane clay 1 

Eocene

Cleveland County red lands J 

L'Eau Frais shale l 

Little Missouri lignites or ligneous shales l 

Manchester shale 1 

Eocene, upper

Caney Point marl member (of

White Bluff formation) 2 

Marks-Mills red beds J 

Pastoria sand member (of White

Bluff formation) 2 

Redfield formation 2 

Rison clay member (of White

Bluff formation) 2 

White Bluff marl l 

Cretaceous

Brazil Branch breccia l 

Centerpoint volcanic facies (of

Eagleford formation) 2 

Upper Cretaceous and Eocene

fCamden series J 

Upper Cretaceous 

Arkadelphia clay 1 

Arkadelphia marl l 

fBig Decipher calcareous sands l 

fBig De Gray horizon l 

fBingen formation or sand l 

Brownstown marl : or formation 

Buckrange sand lentil (of Ozan

formation) l

fClark County littorals 1 

fColumbus marl l 

Grain sand l (subsurface) 

Graves sand l (subsurface) 

Gregory sand l (subsurface) 

fHigh Bluff blue sands 1 

fHigh Bluff greensand 1 

Koster joint clays *
INDEX TO THE GEOIX)GIC NAMES OF NORTH AMERICA 439

United States Continued 

Arkansas Continued

Upper Cretaceous Continued

Louann sand 1 (subsurface)

Marlbrook marl 1

Meakin sand l (subsurface)

Morris Ferry greensand J

Nacatoch sand 1

Ozan formation l

Primm sand J (subsurface)

fRocky Comfort chalk J

Saratoga chalk 1

Tokio formation *

fTokio sand member J (of Bingen formation)

t Washington greensand l

fWhite Cliffs chalk » 

Probably Middle Cretaceous

Opello breccia J 

Lower Cretaceous

Cerro Gordo clay J

Delight sand 8

DeQueen limestone (as member 

of Trinity formation ')

Dierks limestone (as lentil of 

Trinity formation l)

Ferry Lake anhydrite l (subsurface)

Holly Creek formation (as clay l)

James limestone * (subsurface)

Little River J (limestone)

Mooringsport formation 2 (subsurface)

Pike gravel (as member of 

Trinity formation J)

Pine Island shale 3 (subsurface); 

shale member (of Pearsall 

formation in south Texas) 2

Ultima Thule gravel member 

(of Holly Creek formation); 

(as lentil of Trinity formation J)

Upper Little River limestone J 

Upper Jurassic

Buckner member (of Haynesville 

formation) 2 (subsurface); formation in Mississippi 2

Dorcheat member (of Schuler 

formation) 2 (subsurface)

Schuler formation 2 (subsurface)

Smackover formation 2 (subsurface)

Wesson tongue 2 (of Dorcheat 

member of Schuler formation) 

(subsurface) 

Permian

Louann salt * (subsurface)

Norphlet formation 2 (subsurface)

Werner formation 2 (subsurface) 

Permian(f)

Eagle Mills formation 2 (subsurface) 

Carboniferous

Yellian series J 

Pennsylvanian

Appleton stage 1

fArkansan series *

(subUnited States Continued 

Arkansas Continued

Pennsylvanian Continued

Belva shale J

Booneville stage J

Cabin Creek sandstone l 

surface)

Cross Plains sandstone J

Danville stage J

fFork Mountain slate *

fFort Smith formation J

Greenwood sandstone l

Hartwell sandstone l

fNorristown stage J

Ozark sandstone l

fParis shale *

Parker Hill sandstone member 

(of Stanley formation) 2

fPolk County ash bed (in Stanley shale) 1

1 Poteau stage l

 Sebastian stage J

 Spadra shale l

 Tennessee sandstone * 

Tomlinson shale l 

fTomlinson stage 1 

Washburn sandstone l 

fWashington shale and sandstone J

fWinslow formation 1 

Pennsylvanian (?) 

Gilbert shale » 

Pennsylvanian (Atoka)

Greenland sandstone member

(of Atoka formation) 2 

Pennsylvanian (Morrow) 

Bloyd shale 1 or formation 

Brentwood limestone member

(of Bloyd shale) 1 

Cane Hill member (of Hale

formation) 2 

Gap Ridge sandstone member

(of Stanley shale) 8 

Hale formation1 ; fmember

Morrow formation) l 

Eessler limestone member

Bloyd shale) 1 

Morrow series (as group

formation :) 

Prairie Grove member (of Hale

formation) 2 

Woolsey member (of Bloyd shale) 2 

Mississippian and Pennsylvanian

fBpston group J 

Mississippian

fCarrollton limestone J 

Dotson black sheety shale 1 

Hatton tuff lentil (of Stanley

shale) l

Hot Springs sandstone l 

f Marshall shale J 

St. Joe limestone member

Boone formation) l 

fSpring Creek limestone

Moorefield shale) l

(of 

(of

or

(of 

(in
440 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Arkansas Continued

Mississippian Continued 

fWyman sandstone J

\J pper J\2 ISSTSSIppian

Batesville sandstone l

Fayetteville shale J

Hindsville limestone member (of

Batesville sandstone) 1

Moorefield formation (as shale1)

Pitkin limestone 1

Ruddell shale 2

Wedington sandstone member

(of Fayetteville shale) l 

Lower and Upper Mississippian 

Boone formation, 1 limestone ' 

Devonian and Pennsylvanian

t Missouri Mountain formation J 

Devonian and Mississippian

Arkansas novaculite 1 

Devonian(?)

Caddo Gap novaculite l

fEureka shale J

fNoel shale J

Sylamore sandstone member (of

Chattanooga shale) J 

Middle Devonian

Clifty limestone 1 

Lower or Middle Devonian

Penters chert J 

Silurian

fCason limestone l

Lafferty limestone 1

St. Clair limestone 1

fSlatington shale * 

Upper Silurian

Missouri Mountain slate or shale 1 

Lower Silurian

Blaylock sandstone * 

Ordovician

Buffalo group *

fKey sandstone * 

Ordovician(f)

Crystal Mountain sandstone 1 

Upper Ordovician

fBatesville ash bed 1

Cason shale *

Polk Creek shale l 

Middle and Upper Ordovician

fPolk Bayou limestone 1 

Middle Ordovician

Bigfork chert l

Calico Rock sandstone member 

(of Everton formation) J

Everton formation (as limestone 1)

Jasper limestone 1 member (of 

Everton formation)

Kings River sandstone member 

(of Everton formation) J

Newton sandstone member (of 

Everton formation) 1

Sneeds limestone lentil (of Everton formation) 1

United States Continued 

Arkansas Continued

Lower and Middle Ordovician

fCaddo shale 1

flzard limestone J

fOuachita shale l

Womble shale ' or formation; 

schistose sandstone in Oklahoma 

Lower Ordovician

Big Buffalo series 1

Black Rock formation '

Blakely sandstone 1

Bull Shoals Mountain chert beds 

(in Powell dolomite) 8

Cotter dolomite 1

Jenkins Branch chert bed (in 

Cotter formation) 2

Mazarn shale l

Powell limestone or dolomite 1

Smithville formation '

fYellville limestone l 

Cambrian

Collier shale ' 

California

Quaternary (see also Tertiary or 

Quaternary; and Pliocene, upper, and Quaternary)

Bay mud 2

Bodega Bay deposits 1

Boggs Mountain flows s

Burnt Canyon breccia 2

Cabezon fanglomerate l

China Ranch beds a

Clear Lake volcanic series (J. C. 

Brice, 1953, Calif. Div. Mines 

Bull. 166, p. 12, 34^35)

Cobb Mountain volcanics 2

Deep Canyon fanglomerate * Heights fanglomerate x

Kagel fanglomerate J

Konocti volcanics 2

Lindavista terrace material 1

Lopez fanglomerate J

Perini Hill flows 2

Posey formation 2 

Quaternary(f)

Atlas formation l

Cable formation or lake beds l

Tank volcanics l

Tehachapi formation J 

Recent

Big Glass Mountain complex l

Burnt Lava flow 2

CaUahan flow 2

Cucamonga fan deposits 2

Glass Mountain lava 2

Hat Creek basalt 2

Hoffman flow 2

Medicine flow 2

Modoc basalt l

Paint Pot Crater flow 2

Plutos Cave basalt 2 

Recent (?)

Chalk Mountain dacite 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 441

United States Continued 

California Continued 

Pleistocene and Recent

Dos Picachos gravels 2 

Pleistocene or Recent

Beehive Mesa alluvium 2

Paynes Creek basalt l 

Pleistocene to Recent(f)

Mount Hoffmann complex 2 

Pleistocene

Aeolian Buttes till 2

Alameda formation 1

Arroyo Seco gravel l

Battery formation 1

Bautista beds l

Bay Point formation 2

Bishop tuff 2

Blackhawk breccia l

Brawley formation 2

Campus formation 1

Carpinteria formation l

Casitas formation 2

Centinela gravels 1

Clear Lake sediments l

Coahuila silt l

Deadman Island beds l

Dripping Springs formation 2

Huichica formation 2

June Lake basalt 2

Kalorama member l (of Las 

Posas formation)

Klamath gravels 1

Las Posas formation 1

Long Canyon member (of Las 

Posas formation) l

Los Cerritos beds l

Manix lake beds 1

Merritt sand l

Millerton formation 1

Mono Craters obsidian 2

Montezuma formation 2

Nigger Canyon volcanics 2

Pala conglomerate l

Pauba formation 2

Pie Knob andesite *

Pinto formation l

Pittsburg formation 2

Red Bluff formation 1

Red Shale Butte complex 2

San Antonio formation l

San Benito gravels l

Santa Cruz Island formation l

Shoemaker gravel 2

Temecula arkose 2

Temescal formation 1

Timms Point silt or silt member 

(of San Pedro formation); (as 

formation *)

Tomales Bay deposit l

Victor formation 1 

Pleistocene and Pliocene(?)

Glen Ellen formation 2

Schumann formation l 

Pleistocene, upper

Harold formation 2

Hookton formation *

United States Continued 

California Continued

Pleistocene, upper Continued

La Habra formation (as conglomerate 1)

Lake Coahuila deposits 2

Orcutt formation 1 or sand

Pacoima formation 2

Palos Verdes sand l

Peckham formation 8

Rohnerville formation 2

San Dimas formation l

Timber Canyon fanglomerate l

Tomales formation * Wilmington group l 

Pleistocene, upper(?)

Nadeau gravel 2 

Pleistocene, middle

Aromas red sands 2 

Pleistocene, lower or middle

Leona rhyolite l 

Pleistocene, lower

Barlow Ranch beds 2

Fox Canyon member (of San 

Pedro formation) 2

Grimes Canyon sand and gravel 

member (of Santa Barbara 

formation) 2

Hall Canyon formation l

Lomita marl or member (of San 

Pedro formation); (as formation) 1

San Pedro sand l or formation

Signal Hill beds 2 

Tertiary or Quaternary

Black Mountain basalt flow l

Jacumba volcanics l

Table Mountain formation !

Tolenas marble l 

Tertiary

fLang division l

Meyer oil zone l (subsurface)

Skooner Gulch basalt 2

Warner basalt l

Wymer beds l 

Tertiary(?)

Sulphur Springs Mountain ande- site 2 

Tertiary, upper

Butte gravel l member (of Sutter 

formation)

Sutter formation 1 

Tertiary, lower

Grapevine conglomerates l 

Pliocene to Recent

High Cascade series 2 

Pliocene or Pleistocene

Tassajero formation l 

Pliocene and Pleistocene

Carlotta formation 2

Packwopd gravels 2

San Jacinto series l

Santa Clara formation *

fSanta Maria formation *

Saugus formation 1

Ventura sands l
442 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

California Continued 

Pliocene and later (?)

Kern River group, formation, or 

L'- series l

Pliocene and Pleistocene(?)

McKittrick group (as formation1 )

Merced formation 1

Tulare formation 2 

Pliocene and Pleistocene, lower

Alamitos zone l (subsurface)

Ashton zone l (subsurface)

Bixby zone l (subsurface)

Booth zone l (subsurface)

Brown zone l (subsurface)

Fernando formation (as group1)

Wilbur zone l (subsurface) 

Pliocene and Pleistocene, lower(?)

Paso Robles formation 1 

Pliocene (see also Miocene and 

Pliocene; and Miocene or Pliocene)

Alamo formation 2

Asphalto lake bed l

Bald Hill agglomerate member 

(of Tuscan formation) 2

Bald Peak basalt l

Berkeley group 1

Buckbee oil zone l (subsurface)

Canebrake conglomerate 3

Chanac formation l

Clarke oil zone l (subsurface)

fContra Costa lake bed 1

Etchegoin formation 1

Falor formation 2

fGrizzly Peak andesite 1

Horsethief formation 2

Iron Canyon agglomerate member (of Tuscan formation) 2

King City formation 3

Mark West andesite l

Moraga formation 1 or tuff

Mount Eden formation l

Nordstrom oil zone 1 (subsurface)

Northbrae rhyolite l

O'Connell oil zone l (subsurface)

Orinda formation '

Paicines formation 1

Painted Hill formation 3

Petaluma formation 1

Pico formation 1

Pinole tuff 1

Piutean series 1

Purisima formation l

Putnam Peak basalt 2

Sacramento tuff and sand member (of Tuscan formation) 2

St. George formation 1

St. Helena rhyolite 1 member 

(of Sonoma volcanics)

San Ardo group 2

San Diego formation l

Santa Ana sandstone l

Seven-Mile tuff and sand member (of Tuscan formation) 2

Shasta lavas 2

United States Continued 

California Continued 

Pliocene Continued

Siesta formation 1

Sonoma tuff l

Sonoma volcanics l

Stony Creek basalt 2

Sunshine Ranch member (of 

Saugus formation) 2

Supan tuff and sand member 

(of Tuscan formation) 2

Tehama formation 1

Truckhaven rhyolite 2

Tuscan formation (as tuff ')

Wildcat series 1

Wilson Ranch beds l

Wolfskill formation 2 

Pliocene(f)

Cuyama formation 1

Duarte conglomerate 2

Funeral fanglomerate (as conglomerate l)

Kettleman lake bed l

Laguna formation 1

Lake basalt 2

Ridge Route formation 2

Saddleback basalt 2

San Mateo formation *

Sweitzer formation 2

fTassajara lake(?) bed 1 

Pliocene, upper, or Pleistocene, lower

Cache formation 1

Coso formation 2

Hathaway formation l

Ocotillo conglomerate 2

Pipes fanglomerate 1 

Pliocene, upper, and Quaternary

Bitterwater formation 2 

Pliocene, upper

Alturas formation l

Borrego formation 2

Careaga sand or sandstone 2

Cascajo conglomerate member 

(of San Joaquin formation) 2

Cebada fine-grained member (of 

Careaga sandstone) 2

Corcoran clay member (of Tulare 

formation) (subsurface) (J. W. 

Frink and H. A. Kues, 1954, 

Am. Assoc. Petroleum Geologists Bull., v. 38, no. 11, 

p. 2357-2371)

Ferndale sandstone 2

Graciosa coarse-grained member 

(of Careaga sandstone) 2

Hungry Valley formation 2

Livermore gravel l

Nomlaki tuff member (of Tehama 

and Tuscan formations) l

San Joaquin formation *

Santa Barbara formation (as 

beds 0

San Timoteo beds l

Scotia Bluffs sandstone 2 

Pliocene, middle or upper

Camulos formation l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 443

United States Continued 

California Continued 

Pliocene, middle and upper

Rio Dell formation 2 

Pliocene, middle(?) and upper

Foxen mudstone (as formation l) 

Pliocene, middle (see also Miocene, 

upper, to Pliocene, middle)

Peace Valley beds 2

Piru Gorge sandstone 2 

Pliocene, lower and middle

Anaverde formation 2

Mulholland formation 2

Oro Loma formation 2

Tinaquaic sandstone member (of

Sisquoc formation) 2 

Pliocene, lower (see also Miocene, 

upper, and Pliocene, lower)

Avawatz formation 2

Bennett formation 2

Bolsa zone J (subsurface)

Diablo formation 2

Eden beds *

Eel River formation 2

Elsmere member (of Repetto 

formation) 2

Gosnell shale * (subsurface)

Green Valley formation 2

Jacalitos formation 1

Lawlor tuff 2

Lloyd zone * (subsurface)

Los Medanos formation 2

Lost Conglomerate member (of 

Repetto formation) 2

Napa Valley series 2

fRed Rock Canyon beds l

f Repetto formation 1 or siltstone l

Ricardo formation 1

Tolay volcanics 1 

Pliocene and Miocene (?)

Poncho Rico formation 1 

Pliocene, lower, and Miocene(f)

Santa Paula formation 1 

Post-Miocene(f)

Amargosa chaos 2

Calico phase (of Amargosa 

chaos) 2

Jubilee phase (of Amargosa 

chaos) 2

Virgin Spring phase (of Amargosa

chaos) 2 

Miocene to Pleistocene(f)

Mud Hill series l 

Miocene, Pliocene, or Pleistocene

Wimer beds * 

Miocene or Pliocene

Furnace Creek formation 2

Greenwater volcanics 1

tRainbow beds 1

San Pedro schist breccia and

sandstone 1 

Miocene and Pliocene

Bartolo conglomerate 2

fCoalinga beds 1

Crescent City beds l

United States Continued 

California Continued

Miocene and Pliocene Continued 

Mehrten formation l 

Pismo formation 1 

Quarry conglomerate 2 

Sycamore conglomerate 2 

Todos Santos claystone member

(of Sisquoc formation) 2 

Turnbull conglomerate 2 

Violin breccia 2 

Workman Hill conglomerate 2 

Miocene

Alverson andesite lava 2

Bear River series l

Bena gravels 2

Blanca tuff 1

Carneros sandstone member * (of

Temblor formation) 

fCarrizo formation l 

Casmalia gypsiferous shale or red

beds 1

Castaic formation 2 

Cedarville andesite l 

Cedarville series l 

Conejo volcanics 1 

El Modena volcanics 2 

Elsinore sand l (subsurface) 

Fish Creek gypsum 2 

Friant formation 2 

Galloway beds 2 

Glendora volcanics 2 

Hay Fork beds l 

Harris formation 1 

Hyampom lake beds : 

Jewett sand and silt 1 (subsurface) 

Jewett silt member 1 (of Temblor

formation) (subsurface and

surface)

Johnson gravels x 

Kirkers Pass beds l 

Mecca formation 2 

Media shale 1 

Olcese sand 2 (subsurface) 

Pasadena formation 1 

Poso Creek sand l (subsurface) 

Quercan sandstone l 

Redhill sandstone l 

Round Mountain silt l (subsurface and surface) 

Tequepis sandstone l 

Walker formation 1 (subsurface

and surface) 

Walker Plain basalt 2 

Miocene(?)

Bouquet Cafion breccia 1 

Dos Palmas rhyolite 2 

fEscondido series 1 

Fountain Peak rhyolite 2 

Furnacean series : 

Laird sandstone 2 

Millet clay l 

Negra clay l 

Pinnacles formation 2 

Potato sandstone l
444 GEOLOGIC NAME® OF NORTH AMERICA

United States Continued 

California Continued 

Miocene(?) Continued

fRosamond series l

Valley Springs formation 1 

Miocene, upper, and Pliocene, lower

Capistrano formation l

French Flat sandstone 2

Ridge Basin group 3

Towsley formation 2 

Miocene, upper, to Pliocene, middle

Contra Costa group 8

Sisquoc formation 1 

Miocene, upper, to Pliocene, lower (?)

Pullen formation 2 

Miocene, upper

Antelope shale member (of Monterey formation) 8

Apache formation 2

Belridge diatomite 2

Blanco sandstone (in Puente formation) 2

Bopesta formation *

Briones sandstone l

Central Fee unit (in Sycamore 

Canyon member of Puente 

formation) 2

Cierbo sandstone 1

Cubierto shale (in Puente formation) *

Hercules shale member (of 

Briones sandstone) 1 ; (see also 

fHerculean shale member l)

Hoover conglomerate unit (in 

Sycamore Canyon member of 

Puente formation) 2

Hunter sandstone and conglomerate (in Puente formation) 2

Kramer Lake beds (in Ricardo 

formation) 2

La Vida member (of Puente formation) 2

McDonald shale member (of 

Monterey formation) 2

McLure shale member (of Monterey formation) l

Mahala sandstone and conglomerate 2

Malaga mudstone member (of 

Monterey formation) 1

fMellenia series * Mint Canyon formation 1

Modelo formation l

Mohawk lake beds l

Morales member (of Santa Margarita formation) l

Neroly formation l or sandstone

Papel Blanco shale 2

Peculiar shale (in Puente formamation) 2

Point Arena beds 2

Puente formation l

Punchbowl formation 2

Quatal red clay member (of Santa 

Margarita formation) l

Red Mountain andesite 1

United States Continued 

California Continued 

Miocene, upper Continued

Red Rock Canyon sandstone 

member (of Santa Margarita 

formation) l

Reef Ridge shale 1

St. Paul sand 1 (subsurface)

San Pablo group 1 or formation l

Santa Margarita formation (as 

sandstone 0

fSoledad divisions l

Soquel member (of Puente formation) 2

Sycamore Canyon member (of 

Puente formation) 2

Tice shale 1

tTrampan formation l

Valmonte diatomite member (of 

Monterey shale) l

Yorba member (of Puente formation) 2

Whiterock Bluff shale member 

(of Santa Margarita forma- tion) 1 

(f) Miocene, upper

Nova formation 2 

Miocene, middle or upper

Coachella fanglomerate 1

flndio formation l

Palm Spring formation l 

Miocene, middle and upper

Alt amir a shale member (of Monterey shale) l

Alverson Canyon formation a

Barstow formation 1

fMaricopa shale 1

Monterey group, 1 formation, or 

shale

Twisselmann sandstone member

(of Monterey formation) 2 

Miocene, middle

Alferitz formation 2

Big Blue serpentinous member 

(of Temblor formation) l

Buzzard Peak conglomerate 

member (of Topanga formation) 2

Caliente formation 2

Claremont shale 1

Escudo sandstone *

Felix siltstone l (subsurface)

Gould shale member (of Monterey shale) 1

Hambre sandstone l

Hollycrest formation 2

Kinnick formation 1

Miraleste tuff bed l (in Altamira 

shale member of Monterey 

shale)

tOcoya Creek beds 1

Oursan sandstone '

Point Sal formation 2

Portugese tuff bed l (in Altamira 

shale member of Monterey 

shale)

Rench sand 1 (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 445

United States Continued 

California Continued

Miocene, middle Continued

Rodeo shale l

fSalinas shale l

San Onofre breccia l

Topanga formation * Whepley shale l (subsurface) 

Miocene, middle(f)

Quien Sabe volcanics 2 

Miocene, middle or older

Elephant Hill breccia 2

[Johnstone] Johnson Peak tuff 

breccia 2

Spadra felsophyre * 

Pre-middle Miocene

Witnet formation l 

Miocene, lower and middle

Sandholdt shale 2

Split Mountain formation 8

Temblor formation l 

Miocene, lower (see also Eocene to 

Miocene, lower)

Agua sandstone member (of 

Santos shale) 1

fCoyote Mountain clays (in 

Imperial formation) 1

Hannah formation 2

Imperial formation 1

fLatrania sands 1

Lion sandstone 1

Obispo tuff member (of Monterey formation) 2

Painted Rock formation 2

Pato red member (of Vaqueros 

formation) l

Pulaski sand l (subsurface)

Rincon shale 1 or mudstone

Santos shale >

Sauer Dough sand l (subsurface)

Sobrante sandstone l

Soda Lake formation 2

Tecuya beds *

Tick Canyon formation 2

Tranquillon volcanics a

Vaqueros sandstone l or formation

Vedder sand ' (subsurface)

Yuha reefs * 

(?) Miocene, lower

Catalina schist breccia l

Ilmon basalt 2

Lospe formation 2 

Oligocene and Miocene(f)

Artist Drive formation 2 

Oligocene or Miocene, lower

Soledad group l 

Oligocene and Miocene, lower (?)

Vasquez formation (as series l) 

Oligocene (see also Eocene, upper, 

and Oligocene; and Eocene to 

Oligocene)

Alegria formation 2

Bealville fanglomerate a

Concord formation 1

Kirker tuff l

United States Continued 

California Continued 

Oligocene Continued

Pinecate formation 1

fPleito formation l

fSan Emigdio formation l

San Juan Bautista formation l

San Lorenzo formation 1

fSan Lorenzo series l

San Ramon sandstone l

Simmler formation 2

Tumey formation l 

Oligocene(?)

Lillis formation l

Wagonwheel formation * 

Oligocene, lower

Titus Canyon formation l 

Eocene to Miocene, lower

Berry foimation 2

Goler formation 2 

Eocene or Oligocene

Butano sandstone l

fCantua shale l 

Eocene to Oligocene

Church Creek beds 2 

Eocene and Oligocene(?)

Gaviota formation 1

Kreyenhagen formation (as

shale *) 

Eocene

Alberhill clay 1

Arroyo Hondo formation 2

Arroyo Hondo shale member (of 

Lodo formation) 3

Avenal sandstone '

Ballena gravel 1

Canoas siltstone member (of 

Kreyenhagen formation) *

Cantua member * (of Lodo formation)

Capita shale member (of 

Domengine formation) 2

fCarquinez series l

Chaney Ranch sandstone formation 2

Coldwater sandstone member (of 

Tejon formation) 1

Cozy Dell shale a member (of 

Tejon formation)

Creston (formation) a

Delmar sand 1

Dry Creek formation l

Dunns Peak sandstone 2

Edwin clay l

Indarfc sandstone 2

lone formation l

Irvine shale (in Santiago formation) 2

Jameson shale member (of Markley sandstone) 2

Junipero sandstone 2

La Jolla formation 1

Liveoak member (of Tejon 

formation) 8

Lucia shale 2
446 GEOLOGIC NAME© OF NORTH AMERICA

United States Continued 

California Continued 

.Eocenes-Continued

Matilija sandstone member 1 (of 

Tejon formation)

Metralla sandstone member (of 

Tejon formation) 2

Montgomery Creek formation 1

Nonada sand member (of Domengine formation) 2

Piru formation 2

Ragged Valley shale member 

(of Arroyo Hondo formation) 2

Reed Canyon silt member (of 

Tejon formation) 2

Rose Canyon shale l

Santiago formation 2

fStewartsville group *

The Rocks sandstone 2

fTopatopa formation l

Torrey sand 1

Tres Pinos sandstone l

Uvas conglomerate member (of 

Tejon formation) 2

Walkup clay l

Weaverville formation l

Yokut sandstone 2 

Eocene(?)

Carmelo series l

Indian conglomerate l

fMohave formation 2

Mono shale l

fSan Pedro shales l 

Eocene, upper, and Oligocene

Sespe formation 1 

Eocene, upper

Alhambra formation 2

Bear Canyon sandstone member 

(of Kreyenhagen formation) 2

Castro shale member (of Alhambra formation) 2

Echo Falls shale 2

Escobar sandstone 2

Gredal formation 2

Kellogg shale 2

Markley sandstone* member 

(of Kreyenhagen formation)

Nortonville shale member (of 

Kreyenhagen formation) 2

Pereira shale member (of Alhambra formation) 2

Point of Rocks sandstone 2

Poway conglomerate 1

Roop sandstone member (of 

Alhambra formation) 2

Sidney shale member (of Markley formation) 2

Sierra Blanca limestone 1

Tejon formation l

Welcome formation 2

Wheatland formation 2 

Eocene, middle

Anita shale 2

Camino Cielo sandstone member 

(of Juncal formation) 2

United States Continued 

California Continued

Eocene, middle Continued

Capay formation l

Domengine formation 1 or sandstone

Hawkhill formation 2

Juncal formation 2

LI a j as formation l

Los Muertos Creek formation 2

Mabury formation 2

Muir sandstone 2

Sacate formation 2

Santa Susana formation l

Sisar black shale 2

Tesla formation 2

Vacaville shale 2

Wheeler sandstone member (of

Juncal formation) 2 

Eocene, middle, to Oligocene, lower

Reeds Creek andesite 2 

Eocene, lower

Las Juntas shale 2

Marysville claystone member 

(of Meganos formation); (as 

formation J)

Meganos formation 1 

Paleocene and Eocene

Cerros shale member (of Lodo 

formation) 2

Laguna Seca formation 2

Lodo formation 2 

Paleocene

Claymont clay bed (in Silverado 

formation) 2

Dip Creek formation 2

Las Virgenes sandstone 1

Martinez formation 1

Serrano clay bed (in Silverado 

formation) 2

Silverado formation 2

Simi conglomerate 1

Vine Hill sandstone 2 

Mesozoic and Tertiary

fChico-Tejon series 1

fPescadero series l

fSan Francisco group l

fSan Francisco sandstone l 

Mesozoic (see also Paleozoic and 

Mesozoic)

Courtney granite l

Indian Gulch l (formation)

Mariposa group l

Mount Ord series 2 

Mesozoic(?)

Little Chief porphyry l

Mountain Meadows dacite porphyry 2

Ravenna plutonic series 1 

Upper Mesozoic

Darwin quartz diorite 2

Coso granodiorite 2 

Upper Mesozoic(?)

Perris quartz diorite 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 447

United States Continued 

California Continued 

Probably lower Mesozoic

Agua Fria * (formation)

Hunter Valley l (cherts)

Penypn Blanco agglomerate 1 

Mesozoic or older^

Catalina schist (as facies of

Franciscan series 1) 

Post-Cretaceaous

Alum Rock rhyolite 2 

Probably post-Cretaceous

Rattlesnake granite * 

"Between late Cretaceous and Oligocene"

Iversen basalt 2 

Cretaceous or Eocene

Osila sand 2 

Cretaceous and Paleocene(?)

Cima sandstone lentil (in Dos 

Palos shale member of Moreno 

formation) 2

Dos Palos shale member (of

Moreno formation) 2 

Cretaceous (see also Jurassic and 

Cretaceous; and Jurassic or 

Cretaceous)

Berryessa formation 2

Domenigoni Valley granodiorite 2

Escondido Creek leucogranodiorite 2

Indian Mountain leucogranodiorite 2

Lakeview Mountain tonalite 2

Lake Wolford leucogranodiorite 2

La Sierra tonaiite 2

Mount Hole granodiorite 2

Roblar leucogranite 2

San Mar cos gabbro 2

fShasta-Chico series 1

Trabuco formation 1

Woodson Mountain granodiorite 2 

Cretaceous(f)

Cahuenga beds 2

Griffith beds 2

Holcomb quartz monzonite 2

Novato conglomerate 2

Patrick greenstone l 

Probably Cretaceous

Bridalveil granite l

Cathedral Peak granite 1

El Capitan granite 1

Half Dome quartz monzonite 1

Johnson granite porphyry l

Leaning Tower quartz monzonite l

Mount Clark granite 1

Pohono granodiorite l

Sentinel granodiorite 1

Taft granite 1

Tuolumne intrusive series 1 

Upper Cretaceous or Tertiary, lower

Kingston Range monzonite por- phyry 2 

Upper Cretaceous and Paleocene

Moreno formation or shale 1

United States Continued 

California Continued 

Upper Cretaceous 

Antelope shale 2 

Asuncion group 2 

fAtascadero formation l 

Baker Canyon conglomerate

member (of Ladd formation) 2 

Big Oak Flat shale and sandstone

member (of Panoche group) 2 

Bonsall tonalite 2 

Butts Ranch shale member (of

Panoche group)2 

Call sandstone member (of

Panoche group) 2 

Cantinas sandstone 2 

Chico formation or group l 

Chico Creek beds 2 

Debris Dam sandstone 2 

Dosados sand and shale member

(of Moreno formation) 2 

Forbes formation 2 

Funks formation 2 

Gaines group 2 

Garzas beds 2 

Godfrey shales 2 

Golden Gate formation 2 

Green Valley tonalite 2 

Gualala series (see fWallala

beds 1 below) 

Guinda formation 2 

Holz shale member (of Ladd formation) 2

Jack Creek formation 2 

Jalama formation a 

Joaquin Ridge sandstone member

(of Panoche formation) 2 

Ladd formation 2 

Los Banos Creek member (of

"Quinto B" reef beds) » 

Los Gatos beds 2 

Marca shale member (of Moreno

formation) 2 

Mercy sandstone lentil (in Tierra

Loma shale member of Moreno

formation) 2 

Mills formation 2 

Moreno Grande formation (N. L.

Taliaferro, 1944, Am. Assoc.

Petroleum Geologists Bull., v.

28, no. 4. p. 472) 

Mustang Creek formation 2 

Oakland conglomerate member

(of Chico formation) l 

Orestimba group 2 

Pacheco group 2 

Panoche formation 1 

Paynes shale and sandstone member (of Panoche group) 2 

Pendola shale 2 

Piedras Altas formation 2 

Pioneer group 2 

Pleasants sandstone member (of

Williams formation) 2 

Quinto member (of Moreno

group) 2
448 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

California Continued

Upper Cretaceous Continued 

Romero conglomerate (in Debris

Dam sandstone) 2 

Salt Creek conglomerate 2 

Schulz Ranch sandstone member

(of Williams formation) 2 

Sites formation 2 

Sunol series 3 

Tierra Loma shale member (of

Moreno formation) 3 

Venado formation 2 

Volta formation 2 

fWallala beds 1 or group l

[Gualala correct spelling] 

Williams formation 2 

Yolo formation 2 

Upper Cretaceous(?) 

Cuyamaca gabbro (as basic intrusive 0

Pre-Upper Cretaceous 

Cucampnga complex 2 

Deer diorite 2 

Lower Cretaceous (see also Upper

Jurassic or Lower Cretaceous) 

Cottonwood beds 3 

Cnesta diabase 1 

fHeadlight porphyry 1 

Horsetown formation 1 

Hulen beds a Marmolejo formation 2 

Paskenta formation l 

Shasta series l 

fToro formation l 

Wisenor formation * 

Pre-Cretaceous

Placerita formation l

Rubio diorite and metadiorite l

San Gabriel formation 1

Santa Lucia granite or quartz

diorite 2

Tamarack formation ' 

fTrinity formation l 

Pre-Cretaceous(f) 

Feliz granodiorite 2 

Lar quartz diorite a 

Vermont quartz diorite 2 

Post-Franciscan 

Rainbow series l 

Walker Ridge sandstones l 

Walker Ridge shales 1 

Jurassic or Cretaceous

San Jacinto granodiorite 2 

Jurassic and Cretaceous

Bonita sandstone 1 member (of

Franciscan formation) 

Cahil sandstone 1 member (of

Franciscan formation) 

Calera limestone member

Franciscan formation);

member of Cahil sandstone 

Espada formation 2 

Franciscan formation l ; tgroup 1 

Ingleside chert 1 member (of

Franciscan formation)

United States Continued 

California Continued

Jurassic and Cretaceous Continued 

Marin sandstone 1 member (of

Franciscan formation) 

Sausalito chert 1 member (of

Franciscan formation) 

Yager formation 2

Jurassic

Amargo formation 2 

Cove quartz monzonite 2 

Elder Creek group 2 

Grindstone group 3 

Newville group 2 

Plumas series l 

Ship Mountain granite 2 

Siskiyou granodiorite l

Jurassic(?)

Atolia quartz monzonite l 

Bolinas sandstone l 

fBully Hill rhyolite » Corral Hollow shales l 

Gavilan Peak gabbro 2 

fGolden Gate series l 

Lebec quartz monzonite 2 

Liebre quartz monzonite 2 

Oakridge sandstone l 

Osos basalt 1 

Pilarcitos sandstone l 

Pinyon Ridge granodiorite 2 

San Bruno sandstone l 

tSan Luis formation l 

fSan Miguel cherts 1 

Santiago Peak volcanics 2 

School Canyon granite 2 

fSilver Terrace sandstone l 

Stonewall quartz diorite 1 or

formation

Tejon Lookout granite 2 

fTelegraph Hill sandstone l 

Temescal Wash quartz latite

porphyry 2 

Val Verde tonalite 2 

White Tank monzonite 2

Pre-Franciscan 

Bodega diorite 1 

Coast complex i 

Gabilan limestone 1 

Santa Lucia series 1

Upper Jurassic or Lower Cretaceous 

Alpine quartz diorite 1 

Descanso granodiorite 1 

Harbison quartz diorite l 

La Posta quartz diorite l 

Mount Lowe granodiorite l 

Mount Wilson quartz diorite l 

Viej as gabbro-diorite l

Upper Jurassic or Lower Cretaceous (?) 

Bishop Creek granite 2

Upper Jurassic 

Bicknell sandstone 1 

Bradley granodiorite 2 

Colfax formation l
INDEX TO THE GEOLOGIC NAMES OP NOKTH AMERICA 449

United States Continued 

California Continued 

Upper Jurassic

Combe sandstone l

Cooks Canyon agglomerate 1

Fargo Canyon diorite 2

Foreman argillite l

Foreman formation *

Hinchman sandstone 1

Honda formation 2

Hull meta-andesite 1

Inyo granite l

Knoxville formation l

Lucky S argillite l

Mariposa slate 1 or formation

Monte de Oro formation l

North Ridge agglomerate l

Oroville beds l

Victorville quartz monzonite 2 

Upper Jurassic(?)

Bald Rock granite *

Bucks granodiorite 2

Cactus granite l

Cajalco quartz monzonite 1

Coxcomb granodiorite 2

Estelle quartz djiorite l

Isabella granodiorite l

Lakeview quartz-hornblende diorite 1

Merrimac granodiorite 2

fMontara granite *

Parker quartz diorite 1

Steele Valley granodiorite 1

Temescal porphyry 1

Virginia quartz hypersthene

Virginia quartz hypersthene norite 1 

Middle or Upper Jurassic

Cosumnes formation 2

Dufresne slate 2

Logtown Ridge formation 2

Mountain Spring volcanics 2

Newton Mine volcanics 2

Sunnybrook volcanics 2 

Middle and Upper Jurassic

Amador group 2 

Middle Jurassic

Hardgrave tuff 1

Hull agglomerate l

Moonshine conglomerate l

Mormon sandstone l

fMorrison sandstone l

Thompson limestone 1

Thompson red shale l 

Lower and Middle Jurassic

fBend formation l

Potent formation 1 

Lower Jurassic

Arvison formation 2

Fant meta-andesite l

Hardgrave sandstone l

Lilac argillite * 

Lower (?) Jurassic

Bagley andesite 1 

Jurassic or older

Kernville series l

Pampa schist 2

United States Continued 

California Continued 

Triassic and Jurassic

Milton formation 1 

Probably Triassic and Jurassic

Bean Canyon formation or series *

Tuolumne group l 

Triassic

Bedford Canyon formation *

Elsinore metamorphic series l

Genesee Valley limestone and 

shales l

Santa Ana limestone * 

Triassic(f)

Clear Creek volcanic series l

Homer quartzite 2

Kaweah series 2

Lemon Cove schist 2

Mineral King beds 1

Ord Mountain group *

Sanford quartzite a

Santa Monica slate 1

Sebrina complex 2

Sidewinder volcanic series 2

Three Rivers schist 2

Yokohl amphibolite 2 

Triassic(f) or older

Julian schist l 

Upper Triassic and Lower Jurassic

Sailor Canyon formation l 

Probably Upper Triassic or Jurassic

Black Mountain volcanics l 

Upper Triassic

Brock shale *

Cedar formation 1

Devils Canyon member (of Modin 

formation) 2

Hawkins Creek member (of Modin formation) 2

Hosselkus limestone *

Hosselkus series l

Kosk member (of Modin formation) i

Modin formation 1

Swearinger slate '

Trail formation 1 

Middle and Upper Triassic

Pit shale l or formation 

Middle Triassic

Pitt series l 

Lower and Middle Triassic

Inyo series l 

Lower Triassic

Inyoan series l 

Paleozoic and Mesozoic

Diamond Valley complex 2

Maria plutonic complex 2

Pleasant View complex * 

Paleozoic(f) or Mesozoic(f)

Sacatar quartz diorite 2

Summit gabbro 2 

Paleozoic

Furnace limestone 1

Laurel Canyon formation 2 

Paleozoic or older

Palm Canyon complex 2
450 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

California Continued

Paleozoic or older Continued

Tumco formation 2

Vitrefrax formation 2 

Paleozoic(f)

Anzar phase (of Santa Lucia 

series) l

Chino Quarry limestone l

Chino Quarry quartzite l

Jurupa series l

Preston hornblende diorite 1

Sky Blue Quarry limestone l

Sur series 1 

Upper Paleozoic or Triassic

McCoy Mountains formation 2 

Upper Paleozoic

Calaveras formation l

Sidewinder Valley metavolcanics 2 

Upper Paleozoic(?)

Hodge volcanic series 2

Waterman gneiss 2 

Lower Paleozoic(f)

Death Valley formation 1

Hanaupah formation 1

Marvel limestone l

Middle Park formation !

Mountain Girl conglomeratequartzite 1

Radcliff formation l

Redlands limestone 1

Sentinel dolomite l

Sour Dough limestone *

Surprise formation 1

Telescope group 1

Wildrose formation l 

Permian

Dekkas andesite 1

Fairview Valley formation 2

Garlock series 2

McCloud limestone 1

t McCloud shales 1

Mokelumne formation 2

Nosoni formation '

Owens Valley formation (see p. 

621)

Owenyo limestone 1 member (of 

Owens Valley formation)

Reward conglomerate 1 member 

(of Owens Valley formation)

Wildwood limestone 1 

Lower Permian

Mount Edgar limestone 2 

Carboniferous

Hall City limestone 1

Nix porphyrite 2 

Carboniferous (f)

Nordheimer formation 1

Saragossa quartzite 1 

Pre- Carboniferous ( ?)

Chicopee formation 2 

Pennsylvanian

fKeddie formation 1

Kettle meta-andesite 1

fLittle Grizzly Creek beds J

Providence Mountains limestone 2

Reeve meta-andesite :

United States Continued 

California Continued

Pennsylvanian Continued 

Robinson formation 1 

Tihvipah limestone 2 

Pennsylvanian (?)

Rest Spring shale 2 

Mississippian and Permian(f) 

f McCloud formation 1

Arlington formation l

Baird shale :

Bass Mountain diabase 1

Blue Canyon formation 1

Bragdon formation 1

Cape Horn slate 1

f Caribou formation 1

Delhi formation 1

Duncan chert l

Kanaka formation 1

Mass Mountain 1 (basalt flows)

Peale formation l

Perdido formation 2

Relief quartzite l

Shoofly formation l

fSpanish formation l

Stewart Valley limestone 2

Taylor meta-andesite 1

Tightner formation 1

Tin Mountain limestone 2 

Probably Mississippian

Clear Creek greenstone l

Clear Creek series 1

Clipper Gap formation l 

Devonian

Grayback formation 1

Taylorsville formation l 

Devonian(f)

Chanchelulla formation l

Copley greenstone (as metaandesite J) 

Middle(?) and Upper Devonian

Lippincott member (of Lost Burro 

formation) 2

Lost Burro formation 2 

Middle Devonian

Balaklala rhyolite l

Kennett formation 1

fSacramento formation 2 

Pre- Devonian

Kerr Ranch schist 2 

Silurian and Lower Devonian

Hidden Valley dolomite 2 

Silurian

Montgomery limestone l 

Silurian(f)

Grizzly formation 1 

Pre-Silurian

Abrams mica schist 1 

Middle Ordovician

Barrel Spring formation 1 

Lower Ordovician

Mazourka formation 1 

Post-Cambrian

Maria formation 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 451

United States Continued 

California Continued 

Cambrian

Barrelian series 1

Panamintan series l

Pintoan series 1 

Upper Cambrian

Nopah formation 2 

Middle and Upper Cambrian

Racetrack dolomite 3 

Middle Cambrian and later (?)

Cornfield Springs formation x Middle Cambrian

Bonanza King formation 1

Cadiz formation x

Silver king dolomite member 1

(of Bonanza King formation) 

Lower and Middle Cambrian

Tecopa shale 2 

Lower Cambrian

Campito sandstone l

Chambless limestone 2

Inyo marble x

Kelso shale 2

Latham shale 2

Mono series 1

Noonday dolomite 2

Oro Grande series x

Pandermitan series 1

Tough Nut quartzite 3

Zabriskie quartzite member (of

Wood Canyon formation) 2 

Probably Lower Cambrian

Arrastre quartzite 1 

Precambrian and Lower Paleosoic(?)

Panamint metamorphic complex1 

Precambrian

Beck Spring dolomite 2

Berdoo granite 3

Chubbuck marble member (of 

Essex series) 2

Chuckwalla complex 2

Crystal Spring formation 2

Deep Spring formation l

Essex series 2

Fenner granite gneiss 2

Gold Park gabbro-diorite 2

Halloran complex 3

Hinkley Valley complex 2

Hodge complex 3

Johannesburg gneiss 1

Kilbeck granite gneiss 2

Kingston Peak formation 2

Needles complex 2

Orocopia schist 2

Pahrump series 2

Palms granite 2

Pinto gneiss 2

Rand schist x

Reed dolomite l

Roberts formation x Wyman formation 1 

Precambrian(f)

Baldwin gneiss 2

Box Springs complex 3

Echo granite 1

50483& £

United States Continued 

California Continued

Precambrian(f) Continued 

fKlamath schists l 

Mesquite schist a 

Pelona schist 1 

Salmon hornblende schist 1 

San Emedio series 1 

Siskiyou terrane x World Beater porphyry x

Aurela Ridge group 2

Boundary Peak granite x

Brokeoff andesite 1

Carson Creek formation 1

Crescent Crater dacites x

Cucamonga Canyon group 2

Divide Peak andesite x

Eastern basalts l

East Ridge group 2

El Dorado Ridge gneissose quartz 

diorite 2

El Luis Ridge group 2

Flatiron andesites 1

Huckleberry andesites 1

Juniper andesites x

Lassen dacites x

Loomis Peak dacites l

Manzanita dacites x Marjo Canyon diorite 2

Pellisier granite x

Rainbow Flat group 2

Raker Peak pyroxene andesites 1

Red Mountain pyroxene basalts *

San Antonio Canyon group 2

Saroc Ridge group 2

Stoddard Canyon quartz monzonite 2

fSuisun marble 3

Table Mountain andesite l

Tehachapi marble 1

Temecula Canyon granite J

Twin Lakes andesites x Weitchpec schists x West Prospect basalt l

West Ridge group 3

Willow Lake basalts l 

Colorado

Cenozoic (probably Quaternary)

Brush Hollow limestone 2 

Quaternary

Grayback wash l 

Recent

Piney Creek alluvium 2 

Pleistocene

Florida gravel 1

Oxford gravel l 

Pleistocene (pre-Wisconsin)

Cerro till 1

Durango till 1

Porphyry Peaks conglomerate 2 

Tertiary

Baker Lake porphyry 2 

Bald Mountain dacite l 

Basin rhyolite 2
452 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Colorado Continued 

Tertiary Continued

Basin Ridge group 2

Bassick agglomerate 1

Black Hill rhyolite 1

Bonanza latite 1

Brewer Creek latite l

Buffalo Peaks andesite 1

Calico Peak porphyry 1

Chalmers quartz monzonite 2

Climax porphyry 2

t Cripple Creek breccia 1

Eagle Gulch latite *

Empire Gulch rhyolite 1

Eshe porphyry 2

Fairview diorite 1

Golden member (of ArapahoeDenver formation) 2

Grizzly Mountain rhyolite l

Grizzly Peak rhyolite l

Hayden Peak latite l

Lake Agnes quartz monzonite 2

Pleasant View member (of Arapahoe-Denver formation) 2

Porphyry Peak rhyolite l

Porphyry Peaks rhyolite x

Pringle andesite 1

Red Mountain rhyolite x

Squirrel Gulch latite 1

Table Mountain formation 2

Twin Lakes quartz monzonite 

porphyry l

Utica quartz monzonite porphyry 1 

Tertiary, upper, or lower Pleistocene (?)

Little Union quartz latite 2 

Tertiary, middle or upper

Alboroto rhyolite (as quartz 

latite !)

Conejos formation (as andesite l)

Creede formation l

Fisher quartz latite (as latiteandesite l)

Potosi volcanic series l

Treasure Mountain rhyolite (as

quartz latite x)

Tertiary, lower (see also Upper 

Cretaceous or Tertiary, lower)

Eagle River porphyry 1

Pando porphyry 2

Sacramento porphyry 1 

Tertiary, lower, or Upper Cretaceous (?)

Elk Mountain porphyry 1

Evans Gulch porphyry 1

Gray porphyry group 1

Iowa Gulch porphyry 2

Johnson Gulch porphyry 1

Lincoln porphyry 1

White porphyry l 

Pliocene

Trump conglomerate 2

Wray channel beds (in Ash 

Hollow formation) 3

United States Continued 

Colorado Continued 

Pliocene(?)

Bay field gravel 1 

Bridgetimber gravel l 

Hinsdale formation 1 

North Park formation 1 

Nussbaum formation 1 

Pliocene, upper, or Pleistocene, lower

Alamosa formation x Miocene or Pliocene 

Cimarron Creek latite 1 

Difficulty Creek latite » 

High Park lake beds 1 

Miocene

American Flat latite 1 

Burns quartz latite or latite tuff 1 

Campbell Mountain rhyolite 1 

Equity quartz latite l 

Eureka rhyolite 1 formation 

fGap latite * 

Henson tuff l

Huerto quartz latite (as andesite l)

Mammoth Mountain rhyolite 1 

Nelson Mountain quartz latite * 

Niagara Gulch latite 1 

Outlet Tunnel quartz latite 1 

t Palisade andesite x 

Phoenix Park quartz latite 1 

Picayune quartz latite (as volcanic group x) 

Piedra rhyolite or group * 

Rat Creek quartz latite 1 

Sheep Mountain quartz latite (as

andesite x)

Silverton volcanic series 1 

fSummitville andesite x 

Sunshine Peak rhyolite 1 

Willow Creek rhyolite x Windy Gulch rhyolite breccia 1 

Miocene(?)

Beidell latite-andesite i or quartz

latite

Browns Park formation 1 

Canyon Creek member (of San

Juan tuff) 1

fCropsy Peak type 1 (latite) 

Lake Fork quartz latite (as

andesite x) 

Rawley andesite 1 

San Juan tuff 1 or breccia 

Sneffels member (of San Juan

tuff) i

fSouth Mountain type l (latite) 

Tracy Creek quartz latite (as

andesite *) Weller horizon or sandstone l 

West Elk breccia 1 

Miocene, upper or Pliocene

Alnwick lake beds 1 

Miocene, upper and Pliocene

fArkansas marls 1 

Miocene, upper 

Governor diorite 2 

Stony Mountain diorite 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 453

United States Continued 

Colorado Continued

Miocene, upper Continued 

Wagontongue formation 2

Miocene, middle, and Pliocene, lower 

fPawnee Creek beds * Oligocene

Antero formation 1 

fCastle conglomerate l 

Chumway rhyolite 2 

Guffey volcanics 2 

Troublesome formation 2 

Vista member (of White River 

formation) 2

Oligocene (?)

Blanco Basin formation 1 

Telluride conglomerate 1 or formation

Oligocene (?) or Miocene (?) 

Canby latite x

Oligocene, upper, and Miocene,

lower 

fMartin Canyon beds x

Oligocene, upper

Florissant lake beds 1

Oligocene, middle 

fCedar Creek beds 1

Oligocene, lower

Balfour formation 2 

Castle Rock conglomerate 1 

fHprsetail Creek beds x 

Thirty-nine Mile volcanic series 2

Eocene or Oligocene 

Vallejo formation 2

Eocene and Oligocene

fMonument Creek group x

Post-Eocene, pre-Miocene

Green Mountain conglomerate 2

Eocene

fBazoo porphhry x

Brainerd quartz monzonite 1

Bunker andesite l

Chalk Mountain nevadite l

fCopper Mountain porphyry * Cuchara formation 1

fGold Hill porphyry l

fGreen Mountain beds x

fHuerfano series x McNulty Gulch rhyolite x Modoc quartz monzonite 1

Montezuma quartz monzonite 1

Mosquito porphyry l

Mount Alto quartz monzonite 1

Mount Zion porphyry 1

Rosita andesite 1

fRuby formation l

fSan Miguel conglomerate l

fSilyerheels porphyry J

White Raven quartz monzonite 1

Eocene(?)

fAnimas River beds x 

Silver Mountain monzonite porphyry x

Eocene, middle

Anvil Points member (of Green 

River formation) 2

United States Continued 

Colorado Continued

Eocene, middle Continued

Douglas Creek member (of Green

River formation) 1 

Garden Gulch member (of Green

River formation) 1 

Gunnison tillite (W. W. Atwood 

and W. R. Atwood, 1926, Jour. 

Geology, v. 34, no. 7, pt. 1, 

p. 612-622) 

Parachute Creek member (of

Green River formation) 1 

Eocene, lower and middle 

Huerfano formation 1 

Eocene, lower

Calumet granodiorite 2 

Hiawatha member (of Wasatch

formation) 1 

Plateau Valley beds x 

Paleocene and Eocene, lower

DeBeque formation 2 

Paleocene

Coalmont formation 1 

Poison Canyon formation 1 

Ridgway till 1 

fTiffany beds 1 

Paleocene (?) to Oligocene(?)

Mount Aetna quartz monzonite 

porphyry (as Etna quartz monzonite porphyry l) 

Mount Pomeroy quartz monzonite (as Pomeroy quartz 

monzonite x )

Mount Princeton quartz monzonite r ; see also Princeton 

quartz monzonite x

Ohio Creek conglomerate 1

Cretaceous

Coloradan series x

Trinidad lignitic group l 

Cretaceous (?)

Albion monzonite 2

Greenwich shale x 

Upper Cretaceous or Tertiary, lower

Quail porphyry x 

Upper Cretaceous and Paleocene

Animas formation 1

Dawson arkose l

Denver formation 1

Middle Park formation 1

Morley coal group x

fRaton Hills group l

Raton Pass coal group x Wooton coal group x 

Upper Cretaceous

American Nettie quartzite l

Anchor Mine tongue (of Mancos 

shale) x

Apache sandstone l

Apishapa shale 1

Arapahoe formation 1

Baldwin sandstone member (of 

Mesaverde formation) 2
454 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Colorado Continued

Upper Cretaceous Continued

Beecher Island shale member 

(of Pierre shale) 1

Black Diamond coal group 1

Bowie shale member (of Mesa verde formation) 2

Cameo member (of Price River 

formation) 2

Canyon City group x

Carlile shale 1

Cliff House sandstone 1

fColorado series x

Corcoran member (of Price 

River formation) 2

Cozzette member (of Price River 

formation) 2

Engle coal group (in Vermejo 

formation) l

fFairfield coal group 1

fGoff coal group (in Williams 

Fork formation) *

fGolden formation or group 1

Greenhorn limestone *

Haybro formation 1

Hayden Gulch sandstone member (of Haybro formation) 1

Holderness formation 1

Hunter Canyon formation 1

Hygiene sandstone member (of 

Pierre shale) 1

lies formation *

Laramian series l

Laramie formation 1

Larimer sandstone member (of 

Pierre shale) x

Lead King lime l

Lewis shale l

Lion Canyon coal group (in 

Williams Fork formation) *

fLion Canyon sandstone member 

(of Williams Fork formation) * McDermott member (of Animas 

formation); (as formation x)

Mancos sandstone 1

Mancos shale 1 ; where Mo wry 

member is recognized Mancos 

shale is Lower and Upper 

Cretaceous

Mancosian series 1

Menefee formation 1

Mesaverde group or formation 1

Milliken sandstone member (of 

Fox Hills sandstone) 1

Milner formation 1

Morapos sandstone member (of 

Mancos shale) l

Mount Garfield formation 1

Mount Harris formation 1

Paonia shale member (of Mesaverde formation) 1

Patterson sand 1 (subsurface)

fPiedra formation x

f Platte series 1

Point Lookout sandstone l

United States Continued 

Colorado Continued

Upper Cretaceous Continued 

Richard sandstone member (of

Pierre shale) 1 

Rockvale sandstone member (of

Vermejo formation) 1 

Rocky Ridge sandstone member

(of Pierre shale) 1 

Rolling sandstone member (of

Mesaverde formation l or of

Mount Garfield formation) 

Sopris coal group (in Vermejo

formation) x 

Terry sandstone member (of

Pierre shale) 1 

Thatcher limestone member (of

Graneros shale) 2 

Timpas limestone l 

Tow Creek sandstone * member

(of lies formation) 

Trinidad sandstone 1 

Trout Creek sandstone or sandstone member (of lies formation) 1

Twentymile coal group x 

Twentymile sandstone member

(of Williams Fork formation) x Williams Fork formation x 

fWillow Creek beds l 

Lower and Upper Cretaceous

Colorado group 1 , formation, or

shale

Graneros shale 1 

Lower Cretaceous

Burro Canyon formation 2

Dry Creek Canyon member (of

Dakota sandstone) 2 

Glencairn shale member (of

Purgatoire formation) 1 

Eassler sandstone member (of

South Platte formation) 2 

Lytle sandstone member (of

Purgatoire formation) 1 

Plainview sandstone member

(of South Platte formation) 2 

Purgatoire formation 1 

South Platte formation 2 

Van Bibber shale member (of

South Platte formation) 2 

Jurassic

fGunnison formation l 

Montezuma shales x 

Ralston formation 2 

Jurassic(?)

Garo sandstone 2 

Upper Jurassic 

Bilk Creek sandstone member

(of Wanakah formation) 2 

Black Girl limestone x 

Bright Diamond limestone (in

Morrison formation) l 

Bright Diamond quartzite (in

Morrison formation) x 

Doctor Bond sandstone x 

Junction Creek sandstone 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 455

United States Continued 

Colorado Continued

Upper Jurassic Continued 

fLa Plata sandstone 1 

fMcElmo formation 1 

Morrison formation l 

Morrisonian series 1 

Pony Express limestone member 

(of Wanakah formation); (as 

beds in Morrison formation l) 

Wanakah formation (as member

of Morrison formation x ) 

Triassic

fDoloresian series 1

Strain shale member (of Lykins

formation) 2 

Triassic(f)

Chaquaqua member 1 (of Lykins

formation)

Gold Hill conglomerate l 

Red Canyon member 1 (of Lykins

formation) 

Upper Triassic

Dolores formation 1 

Permian and Pennsylvanian(?)

Kangaroo formation 1 

Permian

Bath sandstone sub-member (of 

Pony Spring siltstone member l 

[of Maroon formation]) 

Bergen shale member (of Lykins

formation) 2 

Chubb siltstone member (of

Maroon formation) x 

Creston conglomerate phase 1 

Cutler formation 1 

Falcon limestone member (of

Lykins formation) 2 

Glennon limestone member (of

Lykins formation) 2 

Harriman shale member (of

Lykins formation) 2 

Lyons sandstone 1 

Owl Canyon formation 2 

Pony Spring siltstone member (of

Maroon formation) 1 

South Canyon Creek dolomite 

member (of Maroon forma- tion) 2 

Permian(?)

Rock Creek conglomerate member (of Maroon formation) 2 

State Bridge siltstone member (of

Maroon formation) 2 

Permian(9) and Triassic(?)

Lykins formation l 

Middle Permian

Schoolhouse sand 2 

Carboniferous and Triassic(?)

Tarryall formation x 

Carboniferous

Rican series 1 

Pennsylvanian, Permian, and Trit Wyoming formation or group

United States Continued 

Colorado Continued

Pennsylvanian and Permian

t Arkansas sandstone x

Glenwood tongue (of Weber 

sandstone) 2

Maroon formation (as conglomerate or formation 1 )

Sangre de Cristo formation 1 

Pennsylvanian and Permian(f)

Badito formation 1

Jacque Mountain limestone member (of Minturn formation); 

(as member of Maroon formation 1 )

Minturn formation 2

Rico formation x White Quail limestone member

(of Minturn formation) 2 

Pennsylvanian

Battle Mountain formation 2

Belden shale or formation 2

Elk Ridge limestone member (of 

Minturn formation) 2

Fountain formation 1

Garfield formation l

Glen Eyrie shale member (of 

Fountain formation) l

Gothic formation 2

Hells Canyon formation 2

Hermosa formation 3

Hornsilver dolomite member (of 

Minturn formation) 3

Ingleside formation 1

Kerber formation 1

McCoy formation1

Molas formation x

Newett limestone member (of 

Weber? formation) 1

Paradox member (of Hermosa 

formation); (as formation x )

Pinkerton Trail limestone 2

Robinson limestone member (of 

Minturn formation); (as member of Maroon formation l)

Resolution dolomite member (of 

Minturn formation) 2

Swissvale gypsum member (of 

Minturn formation) 2

Veta Pass limestone member 1 

(of Lower Sangre de Cristo 

conglomerate)

Wearyman dolomite member (of 

Minturn formation) 2

f Weber grits x

t Weber shales 1

Whiskey Creek Pass limestone 

member (of Madera formation) 2

Youghall formation 2 

Pennsylvanian (?)

Coffman conglomerate member

(of Maroon formation) 1 

Mississippian

Beulah limestone 1

Hardscrabble limestone 2
456 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Colorado-^Continued

Mississippian Continued

Williams Canyon limestone 1 

Lower Mississippian

Gilman sandstone member (of

Leadville dolomite) 2 

Leadville limestone * or dolomite 

fMillsap limestone 1 

Devonian or Mississippian(f)

Flat-top limestone 1 

Upper Devonian 

f Cement shale l 

Chaffee formation 1 

Dyer dolomite member (of

Chaffee formation) 2 

Elbert formation 1 

fFairview shale 1 

Ouray limestone 1 

Parting quartzite member (of

Chaffee formation) * 

Ordovician

fTomichi limestone * 

fYule limestone x 

Upper Ordovician 

Fremont limestone 1 

Priest Canyon member (of Fremont formation) 2 

Middle Ordovician

Harding sandstone ' or quartzite 

Lower Ordovician 

Dead Horse conglomerate member (of Manitou formation) 2 

Manitou limestone, 1 dolomite, or

formation 

Tie Gulch dolomite member (of

Manitou formation) 2 

fUte Pass dolomite 1 

Cambrian to Upper Devonian

fYulean series 1 

Cambrian

Lodore formation or shale 1 

Upper Cambrian 

Clinetop algal limestone member

(of Dotsero formation) 2 

Dotsero formation 2 

Glenwood Canyon member (of

Dotsero formation) 2 

Ignacio quartzite 1 

Peerless formation (as shale 

member of Sawatch quartzite x) 

Sawatch quartzite l 

fSawatchian series 1 

Precambrian

Big Thompson schist 1 

Black Canyon schist 1 

Boulder Creek granite (as granite

gneiss x)

Broncho Mountain granite x 

Clear Creek gneiss 1 

Coal Creek quartzite * 

Cripple Creek granite 1 

Curecanti granite x 

Dubois greenstone 1 

Emmons Peak quartzite * 

Bolus granite 1

United States Continued 

Colorado Continued 

Precambrian Continued

Estes Park beds 2

Falcon granite gneiss 2

Front Range granite group 1

Gunnison River series 1

Hell Gate porphyry x

Holy Cross schist l

Idaho Springs formation 1

Indian Creek granite 2

Irving greenstone l

Longs Peak granite l

Longs Peak-St. Vrain granite J

Mazatzal granite 2

Mount Evans quartz monzonite * Mount Morrison formation 2

Mount Olympus granite 1

Mount Rosa granite l

Needle Mountains group 1

Overland Mountain granite J

Pikes Peak granite x

Pikian series x

Powderhorn granite 1

Ralston formation l

Raspberry Mountain granite l

River Portal mica schist l

f Rosalie granite x

Salida schists x

Sangre de Cristo granite 1

Sawatch schist J

Silver Plume granite 1

Spring Creek granite 1

Summit type (of granite) l

Swandyke hornblende gneiss l

Tenmiie granite l

Trimble granite l

Twilight granite J

fUinta sandstone or quartzite l

Uncompahgre formation 1

Vallecito conglomerate 1

Vernal Mesa granite 1

Westwater gneisses and schists '

Whitehead granite 1

Windy Point granite x Womack gneiss x 

Precambrian(?)

Bear Mountain granite 1

Central City granite 1

Evans granite 1

Glendale granite l

Santa Fe granite l

Troutdale granite l 

Probably Precambrian

Mount Champion quartz monzonite 1

Bull-Domingo agglomerate J 

Specimen Mountain volcanics 3 

Connecticut 

Pleistocene 

Berlin clay l 

Clayton clay 1 

Hartford clay l 

Middletown clay l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 457

United States Continued 

Connecticut Continued 

Pleistocene, upper

New Haven clay 1 

Triassic

New Haven arkose 2

Portland arkose 2 

Upper Triassic

 ( Connecticut shales, 1 sandstone,1 

conglomerate and group 1

Meriden ash bed l

South Britain conglomerate l

Talcott diabase 1 

Pre-Triassic

Orange phyllite l

Prospect porphyritic gneiss 1

Stony Creek granite gneiss 1 

Paleozoic

Hartland formation (as schist1)

Mount Tom hornblende gneiss *

Nonewaug granite 2 

Paleozoic(f)

Haddam granite gneiss 1

Hebron gneiss 1

Middletown gneiss l 

Carboniferous or post-Carboniferous

Canterbury granite gneiss 1

Eastford granite gneiss l

Glastonbury granite gneiss l

Lyme granite gneiss x

New London granite gneiss l

Preston gabbro l

Putnam gneiss 1

Scotland schist 1

Sterling granite gneiss '

Willimantic gneiss 1 

Carboniferous

Killingworth leucotonah'te 2

Pomfret phyllite x Woodstock quartz schist x 

Pennsylvanian (?)

Redstone granite 1 

Pre-Pennsylvanian

Stonington gneiss 1 

Mississippian(?) or older

Bolton schist l

Maromas granite gneiss 1 

Ordovician

fRiga schist l

Waterbury gneiss 1 

Ordovician(?)

Bristol granite gneiss 1

Brookfield diorite 1

Collinsville granite gneiss l

fSalisbury schist 1 

Upper Ordovician

Thomaston granite (as granite

gneiss x) 

Cambrian and Ordovician

f Canaan limestone and dolomite 1 

Precambrian

Branford granite gneiss i

Dalton gneiss 1

East Haven granite 1

Light House granite 1

Mamacoke gneiss 1

United States Continued 

Connecticut Continued 

Precambrian Continued

fMilford cblorite schist 1

Plainfield quartz schist J 

Precambrian(?)

Barrack Mountain granite gneiss 1

Danbury granodiorite gneiss 1

t Greenwich formation l

Hawleyville granite gneiss *

Sharon Mountain quartz diorite 1

Waramaug formation 2

t Wilton formation 1 

Age(f)

Lantern Hill quartz rock *

Litchfield norite x 

Delaware 

Pleistocene

fDelaware River gravels and

clays x

District of Columbia 

Pleistocene

Columbia group 1 

Pliocene (?)

Good Hope formation 1

Tenley formation l 

Lower and Upper Cretaceous

Potomac group 1 

Precambrian

Broad Branch series 1

t Piedmont crystalUnes, 1 gneiss, 1

or granite * 

Florida 

Becent(f)

Van Valkenburg beds a 

Pleistocene and Recent

Lake Flirt marl 1 

Pleistocene

Anastasia formation 1

Coffee Mill Hammock marl ] 

member (of Fort Thompson 

formation)

fEverglades limestone l

Fort Thompson formation 1

Key Largo limestone 1

tKey West oolite x Melbourne bone bed 1 facies (of 

Pamlico sand)

Miami oolite l

fPalm Beach limestone l 

Pliocene and Pleistocene

fLostmans River limestone 1 

Pliocene

t Bristol formation *

Caioosahatchee marl 1 or formation

fNashua marl l 

Pliocene, middle

Bone Valley gravel l or formation 

Pliocene, lower

Alachua formation 1

 Arcadia marl 1 

"Archer beds l 

' De Soto beds l

 Dunnellon formation l
458 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Florida Continued

Pliocene, lower Continued

fFloridian group or series *

fPeace Creek beds x 

Miocene, upper

t Buckingham marl 2

t Jacksonville formation 1

Tamiami formation 2 

Miocene, probably upper

fEuchee phase 1 

Miocene, middle and upper

t Alum Bluff series *

fChoctawhatchee formation l 

Miocene, middle

fAlaqua phase 1

Oak Grove sand 1 member (of 

Shoal River formation)

Permenters Farm beds 3

Shoal River formation l

Whites Creek bed member (of

Shoal River formation) 2 

Miocene, lower and middle

Alum Bluff group l

fApalachicola group * Hawthorn formation 1

fTampa group x Miocene, lower

fAspalaga clay or marl *

t Ballast Point silex bed J

fChattahoochee formation * Chipola formation l

fOcheesee beds 1

St. Marks facies (of Tampa

fSopchoppy limestone 1

Tampa limestone l

fTampa silex bed 1

fWakulla formation 1

t Waldo formation l

White Beach sandrock * 

Miocene, lower or later

t Manatee River marl 1 

Oligocene, upper

Suwannee limestone 1 

Oligocene, middle

Marianna limestone l 

Eocene, upper

Bumpnose limestone member (of 

Crystal River limestone) 2

Crystal River formation 2

Gadsden limestone 2

Inglis member (of Moodys 

Branch formation) 2

fLevyville formation l

Ocala limestone 1

f Peninsular limestone 1

Williston member (of Moodys

Branch formation) 2 

Eocene, middle or upper

Gulf Hammock limestone 2 

Eocene, middle

Avon Park limestone 2 (subsurface 

and surface)

Lake City limestone 2 (subsurface)

United States Continued 

Florida Continued

Eocene, middle Continued

Tallahassee limestone 3 (subsurface) 

Eocene, lower

Oldsmar limestone 2 (subsurface) 

Paleocene

Cedar Keys limestone 2 (subsurface) 

Upper Cretaceous

Lawson limestone 2 (subsurface) 

Georgia 

Pleistocene

fOkefenokee formation 1 

Penholoway formation l 

fSatilla formation l 

Pliocene

Charlton formation * 

Miocene, lower

fAltamaha formation or grit x 

Griffin bed » 

Jacksonboro limestone x 

t Marks Head marl l 

fParachucla marl or shale l 

Wileys Landing bed 1 

Oligocene and Miocene

fBainbridge residual beds 1 

f Brier Creek marl x 

Oligocene, upper

Flint River formation 1 

Oligocene, middle

t Flint River lower and upper

zones 1 

Eocene, upper

fBainbridge marl * 

Irvinton sand member (of Barnwell formation) 2 

fKey Creek sand 1 

Sandersville limestone member

(of Barnwell formation) 2 

fShell Bluff marl (in Barnwell

formation) x

Tivola tongue (of Ocala limestone) 1 

Twiggs clay member (of Barnwell

formation) x 

Eocene, middle

McBean formation 1 

Upper Cretaceous 

Atkinson formation 2 (subsurface) 

Blufftown marl 1 

Cusseta sand member (of Ripley

formation) J or Cusseta sand 

Providence sand (as member of

Ripley formation1) 

fRenfroes marl x 

Paleozoic

Palmetto type granite 2 

Paleozoic(?)

Little River series 2 

Permian(?)

Stone Mountain granite 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 459

United States Continued 

Georgia Continued 

Carboniferous

fLookout Mountain sandstone 1 

Mississippian

Lavender shale member (of Fort

Payne chert) 2 

Lower and Middle Devonian

Armuchee chert 1 

Silurian

fRqckwood sandstone l 

Ordovician or Silurian

Taylors Ridge 1 (formation) 

Middle Ordovician

Deaton formation or series 1

Rockmart slate 1

Cambrian (see also Precambrian 

or Cambrian)

Mineral Bluff formation 2

fOostanaula shales or series 1

Salem Church granite * 

Probably Cambrian

High Tower granite x Upper Cambrian

fFairmount slate l 

Middle and Upper Cambrian

Conasauga shale, limestone,1

formation, or group 

Lower Cambrian

fCartersville formation x

Pinelog conglomerate 1

Rome formation 1

fRome sandstone 1 

Probably Lower Cambrian

Cohutta conglomerate l 

Precambrian or Cambrian

Canton schist x

Pine Mountain formation x

Tallulah Falls quartzite 1

Toccoa quartzite x 

Precambrian

Acworth gneiss 1

Amicalola gneiss 2

Cohutta schist 2

Corbin granite 1

Cunningham granite 2

Dean formation 3

Fort Mountain gneiss 2

Hothouse formation 2

Hughes Gap formation 2

Manchester schist 2

Oglethorpe formation 2

Snelson granite 2

Sparks schist 2

Woodland gneiss 2 

Precambrian(?)

Austell granite 2

Jeff Davis granite 2

Lithonia granite-gneiss 2 

Age(?)

Panola granite 2 

Hawaii. See p. 618 

Idaho

Pleistocene

American Falls lake beds l

Bliss basalt l

United States Continued 

Idaho Continued

Pleistocene Continued

Burley lake beds l

Cedar Butte basalt 1

Emmett formation l

McKinney basalt 1

Madson basalt 1

Malad basalt 1

Menan tuff 2

Minidoka basalt l

Sand Springs basalt 1

Thousand Springs basalt l

Wendeli Grade basalt 1 

Tertiary, upper, or Pleistocene

Gentile Valley group 1 

Pliocene to Recent

Snake River basalt 1 

Pliocene

Edie School rhyolites 2

Idaho formation 1

Mink Creek conglomerate 2 

Pliocene(?)

Boise sandstone x

Cache Valley group *

Donkey fanglomerate 2

Malade Valley group x Marsh Creek group l

Poison Creek formation l 

Pliocene, upper

Banbury volcanics 1

Hagerman lake beds 1 

Pliocene, upper(f)

Raft lake beds l 

Pliocene, middle (?)

Rockland Valley basalt 1 

(?) Pliocene, lower

Eagle Rock tuff \

Massacre volcanics l

Neely lake beds 1 

Miocene, Pliocene, and Pleistocene

JNampa beds x Miocene and Pliocene(f)

Payette formation 1 

Miocene(?)

Medicine Lodge beds 2 

Miocene, upper, or Pliocene, lower

Owyhee rhyolite * 

(?) Miocene, upper

Pillar Falls mud flow 1

Shoshone Falls andesite l 

Miocene, middle, or upper

Latour formation x 

Oligocene(?)

Mount Bennett rhyolite 1 

Probably Oligocene and Miocene

Kamiah volcanics 1 

Oligocene, upper, or Miocene, lower

Challis volcanics 1

Germer tuffaceous member (of 

Challis volcanics) x

Yankee Fork rhyolite member

(of Challis volcanics) 1 

Cretaceous

Tygee sandstone 1
460 GEOLOGIC NAMES OF NORTH AMEBICA

United States Continued 

Idaho Continued

Lower and Upper(f) Cretaceous

Wayan formation l 

Lower Cretaceous

Bechler conglomerate 1 or shale

Draney limestone 1

Ephraim conglomerate * Gannett group 1

Peterson limestone 1 

Lower(?) Cretaceous

Homer limestone member (of

Wayan formation) 1 

Jurassic or Cretaceous

Boise granite 1 

Probably Jurassic or Cretaceous

Bayview granodiorhe 1

Granite Creek granodiorite 1

Packsaddle Mountain granodio- rite i 

Upper Jurassic

Preuss sandstone 1 or redbeds

Wolverine Canyon limestone 

member (of Preuss sandstone) 2 

Triassic

Lanes tongue (of Ankareh formation) 2

Wood shale 1 tongue (of Ankareh

formation) 

Triassic(?)

Higham grit 1 

Upper Triassic

Deadman limestone 1

Lucile series J

Stump sandstone 1 

Lower Triassic

Fort Hall formation 1

Portneuf limestone 1 member (of 

Thaynes formation)

Boss Fork limestone 1

Timothy sandstone l or sandstone member (of Thaynes 

formation) 

Permian and Upper Triassic

Seven Devils volcanics l 

Permian

Phosphoria formation 1

Rex chert member or tongue (of

Phosphoria formation) l 

Permian(?)

Casto volcanics 1

Snake River series 1 

Pre-Permian

Blacklead limestone 1 

Carboniferous

Pittsburg formation 2 

Upper Carboniferous(?)

Sandpoint conglomerate 1 

Pennsylvanian

Wells formation 1

Wood River formation 1 

Mississippian and Devonian(?)

Milligan formation l 

Upper Devonian

Grand View dolomite 1

United States Continued 

Idaho Continued 

Silurian

Trail Creek formation 1 

Ordovician

Phi Eappa formation 1 

Upper Ordovician

Fish Haven dolomite 1

Kinnikinic quartzite 1

Saturday Mountain formation ' 

Lower Ordovician

Ramshorn slate 1 

Cambrian(?)

Bannock volcanic formation 1

Bayhorse dolomite 1

Garden Creek phyllite l 

Upper Cambrian

Ovid formation 2

St. Charles limestone * Worm Creek quartzite member

(of St. Charles limestone) 1 

Middle and Upper Cambrian

Nounan limestone l 

Middle Cambrian

Bloomington formation 1

Lakeview limestone 1

Langston limestone 1

Rennie shale 1

Spence shale member (of Ute

limestone) l 

Middle^) Cambrian

Gold Creek quartzite 1 

Lower Cambrian(l)

Black Rock limestone l 

Precambrian

Blacktail formation 1

Burke formation l

Cataldo quartzite l

fCoeur d'Alene series 1

fHarrison series l

Hoodoo quartzite 1

Lemhi quartzite 2

Orofino series x

Pocatello formation 2

Prichard slate or formation 1

Revett quartzite *

St. Regis formation x

Striped Peak formation 1

Swauger quartzite 2

Wallace formation *

Yellowjaeket formation ! 

Precambrian(l)

Albion Range group J

East Fork formation 1

Hyndman formation 1 

Age(l)

Silver City granite 1 

Illinois 

Pleistocene

Cairo till l

Florence gravel 1

Florencia formation l

Freeport gravel l

Joliet conglomerate l

Kankakee torrential deposits *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 461

United States Continued 

Illinois Continued 

Pleistocene Continued

Mahomet beds 1

Peru beds 1

fPrairie formation 1

Seignelay till 1

Silveria formation 1

Tazewell loess x 

Pleistocene (Wisconsin)

Deer Plain formation 8

Farmdale loess 2

Kickapoo beds x

Peorian loess 1

Rockdale drift 2 

Pleistocene (pre-Wisconsiri)

Pecatonica till !

Pleistocene (Sangamonl and Illinoian)

Brussels formation 8 

Pleistocene (Illinoian)

Illinoian drift l

Lemont drift 8 

Pleistocene (Nebraskari)

Sankoty sand 8 

Pennsylvanian

Abingdon cyclothem 2

Absher limestone 2

Ava shale (in Pottsville formation) 1

Avon shale and limestone (in 

Pottsville formation) 1

Aylesworth limestone member 

(of Pottsville formation) 1

Babylon cyclical formation 1

Bald Hill limestone (in Tradewater formation) * Bald Hill sandstone (in Tradewater formation) 1

Baldwinsville limestone (in McLeansboro formation) 1

Bankston Fork limestone (in 

McLeansboro formation) 1

Bernadotte cyclical formation J

Bernadotte sandstone (in Pottsville formation) 1

Big Creek shale (in Carbondale 

formation) 1

Bogota cyclothem (including 

Bogota limestone and shale) 2

Boskydell marine horizon (in 

Pottsville formation) 2

Brereton cyclical formation 1

Brereton limestone (in McLeansboro formation) 1

Bridgeport sand 1 (subsurface)

Browning sandstone (in Carbondale formation) 2

Brushy Creek sandstone (in 

McLeansboro formation) 1

Bunje cyclothem 8

Burroughs beds 2

Canton shale member (of Carbondale formation) * Carlinville cyclical formation 1

Carlinville sand 1 (subsurface)

United States Continued 

Illinois Continued

Pennsylvanian Continued

Centralia limestone (in McLeansboro formation) * Claypool sand l (subsurface)

Cohn cyclothem a

Collinsville limestone 1

Copperas Creek shale and sandstone (in McLeansboro formation) 1

Covel conglomerate (in Summum cyclothem) 2

Craborchard cyclothem (including Craborchard limestone) 2

Crows Mill limestone (in McLeansboro formation) 1

Cuba sandstone (in Carbondale 

formation) 1

Cutler limestone member (of McLeansboro formation) l

Dayis formation or cyclothem 

(including Davis sandstone) 8

Delong cyclical formation 1

Delwood formation or cyclothem 

(including Delwood. sandstone) 2

Divide cyclothem 8

Drury shale and sandstone member (of Pottsville formation) 1

Dykstra sand 1 (subsurface)

Effingham terrane 1

Farmington shale (in McLeansboro formation) 1

Fairmount limestone (in McLeansboro formation) 1

Flannigan cyclothem 8

Flat Creek cyclothem 2

Flat Rock sand 1 (subsurface)

Francis Creek shale and limestone (in Carbondale formation) 1

Galatia sandstone (in McLeansboro formation) 1

Galum limestone member (of McLeansboro formation) 1

Gila cyclothem (including Gila 

limestone) 2

Gilchrist shale (in Pottsville fornation) 1

Gimlet cyclical formation 1

Gimlet limestone 1

Golden Eagle limestone * Goose Lake clay 2

Greenbush cyclical formation 1

Greenup cyclothem (including 

Greenup limestone) 2

Hall cyclothem (including Hall 

limestone) 2

Hanging Rock sandstone 1

Hanover limestone (in Carbondale formation) 8

Herrin limestone (in McLeansboro formation) 1

Hicks cyclothem (including Hicks 

limestone) 8
462 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Illinois Continued 

Pennsylvanian Continued

Ipava shale and sandstone (in 

Carbondale formation) 1

Isabel sandstone 1

Jamestown limestone member (of 

McLeansboro formation) 1

Kickapoo sand 1 (subsurface)

fLa Salle formation 1

Lawrenceville shale (in McLeansboro formation) 2

Lick Creek sandstone member (of 

Pottsville formation) 1

Litchfield sand x (subsurface)

Little Chain limestone (in McLeansboro formation) 2

Little Vermilion cyclothem (including Little Vermilion limestone) 2

Little Wabash sandstone (in McLeansboro formation) 2

Liverpool cyclical formation 1

Livingston limestone (in McLeansboro formation) 1

Lusk formation or cyclothem 2

Macedonia formation or cyclothem 2

Macoupin cyclical formation !

Macoupin limestone (in McLeansboro formation) 1

Me Wain sandstone 2

Makanda sandstone member (of 

Pottsville formation) * Marietta limestone and shale (in 

Carbondale formation) 1

Marshall limestone (in McLeansboro formation) 1

Martinsville limestone l

Maxwell limestone (in McLeansboro formation) 1

Millersville cyclothem (including 

Millersville limestone) 2

Murray Bluff sandstone (in Macedonia formation) 2

Newton cyclothem (including 

Newton limestone) 2

Oak Grove member 1 (of Carbondale formation)

Omega limestone (in McLeansboro formation) 1

Palzo sandstone 2

ParksrCreek limestone (in Pottsville formation) 1

Petro oil sand 1 (subsurface)

Piasa limestone (in McLeansboro formation) 2

Pleasantview sandstone (in Carbondale formation) 1

Pokeberry limestone (in McLeansboro formation) 2

Pontiac limestone (in McLeansboro formation) 1

Pope Creek cyclical formation 1

Pounds formation, sandstone, or 

cyclothem 2

United States Continued 

Illinois Continued

Pennsylvanian Continued 

Purington shale 1 

Quarry Creek limestone 1 

Reel limestone 2 

Ridgely sand 1 (subsurface) 

Robinson sands J (subsurface) 

Rolls Ford shale member (of McLeansboro formation) * 

Ryans Ford limestone (in McLeansboro formation) J 

St. David cyclical formation > 

St. David shale and limestone (in

Carbondale formation) 1 

Scottville cyclothem (including

Scottville limestone) 2 

Seahorne cyclical formation 1 

Seahorne limestone 1 

Sellers limestone (in Caseyville

formation) 2

Seville cyclical formation 1 

Seville limestone (in Pottsville

formation) 1

Shaw Point cyclothem 2 

Sheffield shale (in McLeansboro

formation) 2 

Shelby cyclothem 2 

Shoal Creek cyclical formation 1 

Shumway cyclothem (including

Shumway limestone) 2 

Siggins sand 1 (subsurface) 

Somerset member (of Pottsville

formation) 1 

Sorento cyclothem 2 

Sparland cyclical formation 1 

Spoon River sandstone and shale

(in Pottsville formation) 1 

Spring Valley limestone (in McLeansboro formation) 1 

Summum cyclical formation : 

Summum sandstone (in Carbondale formation) 1 

Tartar cyclothem 2 

Tresner limestone 2 

Trivoli cyclical formation 1 

Turner cyclothem (including

Turner limestone) 2 

Unionville sandstone x 

Utica clay 2 

Waupecan sandstone 1 

Wjley cyclical formation 1 

Wilson sand ] (subsurface) 

Woodbury cyclothem (including

Woodbury limestone) 2 

Upper Pennsylvanian

Murphys Bluff sandstone 2 

Middle and Upper Pennsylvanian 

Carlinville limestone (as member

of McLeansboro formation1 ) 

La Salle limestone (as member of

McLeansboro formation1 ) 

Lonsdale limestone (as member

of McLeansboro formation1 ) 

McLeansboro group (as formation1 )
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 463

United States Continued 

Illinois Continued

Middle and Upper Pennsylvanian 

Continued

New Haven limestone (as member of McLeansboro formation1 )

Rock Creek limestone (as member of McLeansboro formation1)

Shoal Creek limestone (as member of McLeansboro formation :) 

Middle Pennsylvanian

Carbondale group; formation 1 

in Kentucky

Grindstaff sandstone; member 

(of Tradewater formation 1 in 

Kentucky)

Stonefort limestone; member (of 

Tradewater formation : in Kentucky)

Vergennes sandstone (as member 

of Carbondale formation1 )

Vermilionville sandstone (as 

lentil in Carbondale formation1 )

ppian (see also Devonian 

and Mississippian)

fBrewerville sandstone 1

Chartresan series 1

Elko gravel 1

Hartline chert 2

Hoffner member (of Ste. Genevie ve limestone) 2

Jonesboro limestone l

fKaskaskia limestone, formation, 

or group l

Kaskaskian series 1

McClosky sand 1 (subsurface)

McKerney limestone member (of 

Hannibal shale) 1

Marigold oolite 1

Martinsville sand : (subsurface)

fPlum Creek beds 1

Rockwood sandstone :

fRuma formation 1

Shetlerville formation x

Sonora sandstone 1

Spar Mountain sandstone (in 

Fredonia member of Ste. Genevieve formation) 2

Springville shale 1

Swan Creek sandstone 1

Valmeyer series 1

Westfield lime : (subsurface) 

Upper Mississippian or Pennsylvanian

Bellair sands 1 (subsurface)

Buchanan sands : (subsurface) 

Upper Mississippian

Allendale sand 1 (subsurface)

Baldwin formation 2

Benoist sand 1 (subsurface)

Bielh sand 1 (subsurface)

Carlyle sand 1 (subsurface)

United States Continued 

Illinois Continued

Upper Mississippian Continued

t Chester sandstone x Chester series (as group1 )

Clore limestone l

Cypress sandstone 1

Degonia sandstone 1

Denny sand 1 (subsurface)

Downeys Bluff member (of 

Renault formation) 2

Elvira group 2

Fraileys shale 2

Golconda formation l

Haney limestone 2

Homberg group 2

Kinkaid limestone l

Klein sand 1 (subsurface)

Lindley sand 1 (subsurface)

Lusk 1 [limestone]

Menard limestone 1

New Design group 2

Okaw formation 1

Paint Creek formation 1 or shale

Palestine sandstone 1

Renault formation 1

Ridenhower shale 1

Rosiclare sandstone member (of 

Ste. Genevieve limestone) 1

St. Francisville sand 1 (subsurface)

Sparta sand 1 (subsurface)

Stein sand 1 (subsurface)

Tracey sand 1 (subsurface)

Vienna limestone 1

Waltersburg sandstone l

Warsaw shale, limestone 1 or 

formation

Yankeetown chert : 

Lower Mississippian

Darty limestone 2

 ( Hamburg oolite 1

Kinderhook series (as group *)

McCraney limestone 2

Oshawanan series 1 

Devonian and Mississippian

Carper sand 1 (subsurface)

Kaskaskia sequence 2 

Devonian

Backbone limestone l

Hoing sand 1 (subsurface) 

Upper Devonian

Alto formation l

Mountain Glen shale l 

Middle Devonian

Dutch Creek sandstone 1

Grand Tower limestone 1

Lingle limestone 1

Misenheimer shale l 

Lower or Middle Devonian

Clear Creek limestone l or chert 

Lower Devonian

Grassy Knob chert 1 

Silurian

Athens marble 1

Essex limestone x Winston dolomite :
464 GEOLOGIC NAMES OF NORTH AMERICA.

United States Continued 

Illinois Continued 

Middle Silurian

Bellwood dolomite 2

Chicago formation 1

Coe group 2

Cordova dolomite 2

Joliet limestone 1

Markgraf member (of Joliet 

formation) 2

Port Byron limestone 1

Rockdale dolomite 2

Romeo member (of Joliet formation) 2

Thorn group 2 

Lower Silurian

Alexandrian series *

Channahon limestone 1

Gyrene member (of Edgewood 

limestone) x

Kankakee limestone 1

Orchard Creek shale 1

Sexton Creek limestone * 

Upper Ordovician

Aux Sable limestone *

Cape limestone 2

Divine limestone 1

Du Page limestone 1

Millsdale limestone 1

Rock Run limestone 1

Thebes sandstone 1

Treat limestone l

Wilmington limestone l 

Middle Ordovician

Ancell group 2

Beechef member (of Dunleith 

formation) 2

Boarman member (of Mifflin 

formation) 2

Brickeys member (of Mifflin 

formation) 2

Briton member (of Mifflin formation) 2

Buckhorn member (of Dunleith 

formation) 2

Ghana member (of Pecatonica 

formation) 2

Clement member (of Grand 

Detour formation) 2

Dane member (of Pecatonica 

formation) 2

Daysville formation 2

Dement member (of Grand 

Detour formation) 2

Dunleith formation 2

Eagle Point member (of Dunleith 

formation) 2

Eldena member (of Nachusa 

formation) 2

Elm member (of Nachusa formation) 2

Establishment member (of Mifflin formation) 2

Everett member (of Nachusa 

formation) 2

United States Continued 

Illinois Continued

Middle Ordovician Continued

Fairplay member (of Dunleith 

formation) 2

Foreston member (of Grand 

Detour formation) 2

Galena dolomite 1

t Galena series 1

Garnavillo member (of Guttenberg formation) 2

Glenhaven member (of Guttenberg formation) 2

Grand Detour formation 2

Harmony Hill formation 2

Hazel Green member (of Quimbys Mill formation) 2

Hazelwood member (of Mifflin 

formation) 2

Hely member (of Grand Detour 

formation) 2

Hennepin member (of Pecatonica 

formation) 2

Kingdom formation 2

Loughridge formation 2

Lowell Park member (of Platteville limestone) 1

Medusa member (of Pecatonica 

formation) 2

Mortimer member (of Dunleith 

formation) 2

Nachusa formation 2

New Glarus member (of Pecatonica formation) 2

Oglesby member (of Pecatonica 

formation) 2

Pecatonica dolomite member 1 

(of Platteville formation)

Rivoli member (of Dunleith formation) 2

St. James member (of Dunleith 

formation) 2

Sherwood member (of Dunleith 

formation) 2

Shullsburg member (of Quimbys 

Mill formation) 2

Sinsinawa member (of Wise Lake 

formation) 2

Stillman member (of Grand Detour formation) 2

Strawbridge member (of Quimbys Mill formation) 2

Victory member (of Grand Detour formation) 2

Walgreen member (of Grand 

Detour formation) 2

Wall member (of Dunleith formation) 2

Wise Lake formation 2

Wyota member (of Dunleith

formation) 2 

Lower Ordovician

fCap au Gres sandstone * 

Upper Cambrian

Charter member (of Mt. Simon 

formation) 2 (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 465

United States Continued 

Illinois Continued

Upper Cambrian Continued 

Crane member (of Mt. Simon

formation) 3 (subsurface) 

Gunn member (of Mt. Simon

formation) 2 (subsurface) 

Kenyon member (of Mt. Simon

formation) 3 (subsurface) 

Lacey member (of Mt. Simon

formation) 2 (subsurface) 

Lovell member (of Mt. Simon

formation) 8 (subsurface) 

Mayfield member (of Mt. Simon

formation) 2 (subsurface) 

Indiana 

Pleistocene 

Hawpatch glacial gravel and

sand x

Indianan till l

Wabash beds 1

Post- Carboniferous

Ohio River formation * 

Pennsylvanian (see also Mississippian or Pennsylvanian) 

Arthur limestone (in Carbondale

formation) 1 

Buffkin formation 1 

Cannelton sandstone : 

Claypole Hills sandstone (in

McLeansboro formation) 2 

Coxville sandstone 1 

Double Horseshoe cyclothem 2 

Ferdinand limestone 2 

fFort Knox sandstone 1 

Friendsville formation l 

Fulda limestone 2 

Grandyiew limestone 2 

Grayville formation l 

Hanging Rock sandstone * 

High Rock sandstone l 

Hindostan whetstone l 

Holland limestone 2 

fLady Washington sandstone l 

McClearys Bluff formation 1 

McRoberts sand 1 (subsurface) 

f Martha Washington sandstone 1 

fMerom group 1 

fMillersburg formation * 

Mumford formation 8 

Mumford Hills sandstone (in

McLeansboro formation) 2 

New Harmony sandstone (in

McLeansboro formation) 2 

Parker formation l 

Rockport sandstone * 

St. Wendells limestone (in McLeansboro formation) 2 

St. Wendell sandstone 1 

Shelton Cliff sandstone 1 

Silverwood cyclothem (including

Silverwood limestone) 2 

fSomerville limestone 1 

Velpen limestone 2 

Wabash formation l 

t Wabash group *

United States Continued 

Indiana Continued

Pennsylvanian Continued

West Princeton sand l (subsurface) 

Upper Pennsylvanian

Busseron sandstone member l 

(of Shelburn formation)

Dicksburg Hills sandstone 3

Dltney formation l

Hayden Branch formation 2

Hazelton Bridge formation 2

Inglefield sandstone l

Maria Creek limestone member 

(of Shelburn formation) 2

Merom sandstone l

Rabens Branch bed (in Parker 

formation) 2

Shelburn formation 1

Staunton formation 1

Vigo limestone member (of Shelburn formation) 2

West Franklin limestone * 

Middle Pennsylvanian

Alum Cave l limestone member 

(of Petersburg formation)

Brazil formation l

Dugger formation 2

Linton formation 2

Petersburg formation 1

Universal limestone member (of

Dugger formation) 3 

Lower Pennsylvanian

Mansfield formation (as sandstone >) 

Mississippian or Pennsylvanian

Davidson sands : (subsurface)

Beaver Bend limestone x

t Bedford limestone l

Beech Creek limestone 1

Beech Creek shale x

Bristow shale and sandstone l

Brown oil sand 1 (subsurface)

Brownstown Hills sandstone

member l (of Edwardsville

formation) 

Bryantsville breccia (in Levias

member of Ste. Genevieve

limestone) 2 

Cataract Falls sandstone (in

Ste. Genevieve formation) 2 

Cutright sandstone member 1 (of

Edwardsville formation) 

Dry Creek sandstone member 1

(of Edwardsville formation) 

Elwren sandstone l 

Finley Knob shale member 1

(of Carwood formation) 

French Lick stone l 

Gennet Creek formation l 

Guthrie Creek member (of Harrodsburg limestone) l

J

Harrodsburg limestone l 

Huron group l 

ndiana oolitic limestone l
466 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Indiana Continued

Mississippian Continued 

Indian Springs shale 1 

Lampkins sandstone member 1

(of Carwood formation) 

Leesville limestone member (of

Harrodsburg limestone) 1 

Lost River chert l 

Mitchell limestone 1 

Mooretown sandstone 2 

Mount Ebel sandstone member 1

(of Edwardsville formation) 

Mount Pleasant shales and sandstones 1

Negli Creek limestone 1 

Nixon sand * (subsurface) 

Oakland City sand 1 (subsurface) 

Orange-Martin limestone 1 

Paoli limestone 1 

Petersburg sand > (subsurface) 

Ramp Creek member (of Harrodsburg limestone) 1 

tSt. Joseph formation l 

Siberia limestone l 

Solsberry formation x 

Stevens Creek limestone 1 

Stobo limestone lens (in Borden

group) l

Weed Patch member l (of Edwardsville formation) 

Wickliff sandstone 1 

fWilliamsport sandstone 1 

Upper Mississippian 

Barker sand 1 (subsurface) 

Brandy Run sandstone l 

Colvin sand 1 (subsurface) 

Cunningham sand 1 (subsurface) 

Gibson sand 1 (subsurface) 

Hightower sands * (subsurface) 

Hoover gas sand * (subsurface) 

Hunt sand 1 (subsurface) 

Hyneman sand * (subsurface) 

Kirkwood sand 1 (subsurface) 

Loveless sand 1 (subsurface) 

Mount Olympus sand 1 (subsurface)

Reelsville limestone 1 

Salem limestone 1 

Snyder sands 1 (subsurface) 

fSpergen limestone 1 

Tracy sand 1 (subsurface) 

Vierling sand 1 (subsurface) 

West Baden (in Chester group) 1 

Willis sand 1 (subsurface) 

Zimmerman sand 1 (subsurface) 

Lower Mississippian 

Aliens Creek fades 1 (of Edwardsville formation) 

Bearwallow facies 1 (of Edwardsville formation) 

Belmont facies 1 (of Locust Point

formation)

Bennettsville facies 1 (of Carwood formation) 

Borden group {

United States Continued 

Indiana Continued

Lower Mississippian Continued

Broomhill facies 1 (of New Providence formation)

Carwood formation 1

Cisco Branch facies 1 (of Floyds 

Knob formation)

Delaneys Creek facies 1 (of Carwood formation)

Dowell Hill facies l (of New 

Providence formation)

Edwardsville formation 1

Evans Landing facies 1 (of Carwood formation)

Falling Run member (of Sanderson formation) 2

Fleener facies 1 (of Carwood 

formation)

Floyds Knob formation 1

Fordyce Knob sandstone facies : 

(of Floyds Knob formation)

Gent facies 1 (of Carwood formation)

Goss Mill limestone facies 1 (of 

Floyds Knob formation)

Henryville formation 2

Jacobs Chapel shale 2

Kelly Hill facies 1 (of Carwood 

formation)

Knob Creek facies 1 (of Carwood 

formation)

Locust Point formation 1

Medora Knob facies 1 (of Edwardsville formation)

Nelson Hill facies 1 (of Locust 

Point formation)

New Providence shale 1

Riverside sandstone 1

Rockford limestone l

Rosewood shale 1

Sanderson formation 2

Schooner Hill facies 1 (of Locust 

Point formation)

Silver Hill facies 1 (of New 

Providence formation)

Sparksville facies 1 (of Carwood 

formation)

Spickert Knob facies 1 (of Locust 

Point formation)

Springier Knob facies 1 (of Edwardsville formation)

Stewarts Landing facies 1 (of, 

Edwardsville formation)

Underwood formation 2 

Devonian

Little Rock Creek limestone 2 

Upper Devonian

Blackiston formation 2

fDelphi black shale 1

New Albany shale 1 

Middle Devonian

Blocher formation 2

Deputy formation 2

Geneva limestone 1 or dolomite

Jeffersonville limestone 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 467

United States Continued 

Indiana Continued

Middle Devonian Continued 

Logansport limestone 2 

New Chapel chert bed (in Silver

Creek limestone) 1 

North Vernon limestone 1 

Pendleton sandstone 1 

Rocky Branch bone bed (in

Jeffersonville limestone) 2 

Sellersburg limestone 1 

fShelby limestone 1 

Silver Creek limestone member

(of Sellersburg limestone) 1 

Speeds limestone member (of

Sellersburg limestone) 2 

Swanville formation 2 

Silurian

Flat Rock stone 1 

Grandad limestone 1 

fUtica limestone 1 

Upper Silurian 

Kenneth limestone 1 

Kokomo limestone * 

Middle Silurian 

Hartsville limestone 1 

Huntington dolomite l 

Laurel limestone 1 or dolomite1 ;

limestone member (of Wayne

formation in Tennessee) 

Listen Creek formation 1 

Liston Creek limestone member

(of Liston Creek formation) 1 

Mississinewa shale 1 

New Corydon limestone 1 

Noblesville dolomite 1 

Osgood shale *; as formation 1 in

Kentucky and Tennessee 

Red Bridge limestone member (of

Liston Creek formation) 1 

Waldron shale; 1 as clay member

(of Wayne formation in Tennessee)

Upper Ordovician 

Elkhorn formation 1 

Harmon formation 1 

Hitz limestone member (of

Saluda limestone) 1 

Lake Huron shale 1 

Laughery formation 1 

Liberty formation 1 ; limestone in

Ohio »

fMadison beds 1 

t Madison water limestone l 

Marble Hill marble 1 

Richmond group 1 

Saluda limestone 1 

Versailles bed (in Richmond

group) 1

Whitewater formation 1 

Middle Ordovician

Tippecanoe sequence 2 

Iowa

Quaternary

Dubuque terrane 1

United States Continued 

Iowa Continued 

Pleistocene

Afton terrane 1

Albion gravel 1

Ashawa till 1

Bla(ikhawkian 1 (till)

Boyer till 1

Dallas deposits 1

fEast lowan formation 1

Gregorian series 1

flowan loess 1

Loveland loess 1

Mahaskan till 1

Moingona till 1 

Pleistocene (Wisconsin)

lowan drift 1 

Pleistocene (pro-Wisconsin)

Wapellan series 1 

Pleistocene (Kansari)

Buchanan gravel 1 

Miocene (?)

Riverside sand * 

Cretaceous or Tertiary

Rockville conglomerate 1 

Cretacmus

Ben ionian series 1

Yanktonian series 2 

Cretaccous(?)

Pine Creek conglomerate 1 

Upper Cretaceous or Miocene(f)

Dodge gypsum 1

Dodge shale 1 

Upper Cretaceous

Grill terrane 1

fDixon chalk or limestone 1

Hawarden shale 1

Nisbnabotna sandstone 1

Saxian series 1

Sergeant shale 1

fWcodbury formation * 

Permian(f)

Fort Dodge gypsum x 

Pennsylvanian

fAp panoose beds 1

Elddra sandstone 1

Haynies limestone 1

fMcnroe beds 1

Munterville cyclothem (including 

Munterville limestone) 2

Muscatine sandstone 2

Plat be shale x

fRauoon River beds 1

Red Rock channel sandstone 1

Truro limestone x 

Pennsylvanian (Virgil)

fBr£,ddyville limestone (in Shawnee formation) 1

Bun oak shale 1

McKissick Grove shale 1

Stenaett limestone (in Shawnee

foj'mation) J 

Pennsylvanian (Missouri)

Char it on conglomerate member 

(of. Pleasanton formation) 1

504835^59 5
468 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Iowa Continued 

Pennsylvanian (Missouri) Con. 

DeKalb limestone member (of

Kansas City formation) 1 

fEarlham limestone (in Kansas

City formation) l 

Westerville limestone member (of

Kansas City formation) 1 

Winterset limestone member (of 

Kansas City formation) 1 ; 

limestone 1 in Kansas 

Pennsylvanian (Des Moines) 

Coal City limestone 2 

Cooper Creek limestone 2 

Des Moines series (as group J) 

Exline cyclothem (including Exline limestone) 2

Alden limestone 1

fAugusta limestone, group, or

fBelfast beds 1

Bonaparte marble 1

Chapin beds 1

Croton limestone (in St. Louis 

limestone) 1

Eagle City beds 1

English River sandstone member 

(of Hannibal shale) 1

Hampton formation 1

Humboldt oolite l

Iowa marble x

Iowa series 1

Iowa Falls dolomite 1

Keosauqua sandstone :

Le Grand beds 1

Maple Mill shale l

fMarshalltown shale 1

Mayne Creek formation l

fMontrose chert 1

North Hill member 1 (of Hampton formation)

Pella beds 1

Prospect Hill sandstone member 

(of Hannibal shale) l

fSt. Louis marls 1

fSpringvale beds l

Verdi beds (in St. Louis limestone) l

Wassonville limestone l 

Lower Mississippian

Aplington formation 2

Burlington limestone '

Gilmore City limestone 1

Keokuk limestone l 

Devonian

Amana beds 2

Hutchinson limestone l

Linnian series 2

Raymond Quarry beds l 

Upper Devonian or Mississippian

Sweetland Creek shale 1 

Upper Devonian

Bloody Run zone 1

Cedarian series 1

United States Continued 

Iowa Continued

Upper Devonian~Continued

Coralville limestone l

Floyd limestone l

Hackberry shale 1

Juniper Hill formation *

Lime Creek shale l

Linwood member (of Cedar Valley limestone) *

Littleton member (of Cedar 

Valley limestone) l

Mason City limestone or dolomite l

Nora limestone l

Owen substage or beds l

Rockfordian series :

fRockford shale l

Rock Grove substage *

Sheffield formation 1

Shell Rock limestone 1

State Quarry limestone l 

Middle and Upper Devonian

fCedar limestone l

Davenport beds * 

Middle Devonian

Cedar Rapids phase (of Otis 

limestone) 1

Cedar Valley limestone *

Coggon limestone *

Fayette breccia x

Independence shale (as member 

of Wapsipinicon limestone J)

Kenwood beds l

Lucas limestone 1

Otis limestone 1

Rapid limestone J

Spring Grove member (of Wapsipinicon limestone) 1

Vinton phase (of Otis limestone) 1

Wapsipinicon limestone 1

Westfield phase (of Otis limestone) * 

Middle(f) Devonian

Montpelier sandstone l

Solon limestone l 

Silurian

Hoing sandstone l (subsurface) 

Silurian(?)

Bertram dolomite l 

Upper Silurian

Goweran series 1 

Middle Silurian

Anamosa dolomite 1

Colesburg dolomite 1

fDelaware limestone 1

Gower dolomite 1

Hartwick dolomite l

Hopkinton dolomite 1

Leclaire dolomite >

Monticello dolomite l

fMount Vernon beds *

Sabula dolomite x Waucoma limestone 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 469

United States Continued 

Iowa Continued 

Ordovician

fMaquoketa series * 

Murray Iron Works member (of 

Platteville formation) 2 (subsurface)

t Platteville stage * 

Upper Ordovician 

Brainard member (of the Maquoketa shale) (as shale J) 

Clermont shale 1 

Colmar shales 1 

fElgin limestone 1 

Fort Atkinson limestone l 

Maquoketa shale 1 

Maquoketan series 1 

Volga shales 1

Middle or Upper Ordovician 

Dubuque shaley member (of 

Galena dolomite); (as formation ») 

Middle Ordovician

Decorah shale 1 or formation 

Glenwood shale member (of 

Platteville formation) 1 ; shale 

or formation in Michigan 

Guttenberg limestone member 1

(of Decorah formation) 

Ion dolomite member l (of Decorah formation) 

fJulian limestone 1 

t Julian series 1 

McGregor limestone member( of

Platteville formation) 1 

Spechts Ferry shale member 1

(of Decorah formation) 

Lower Ordovician 

Oneota dolomite 1 

Winneshiek limestone * 

Cambrian

Hanoverian series l 

Upper Cambrian 

Albin shale 1 

Allamakee dolomite 1 

Hull porphyry 1 

Waukon sandstone 1 

Precambrian 

Ragg quartzite 2 

Siouan series 1 

Split-Rock slate l 

Precambrian(?)

Tipton sandstone 1 

Kansas 

Quaternary

Gerlane formation 1 

Pleistocene and Recent

Sanborn group (as formation *) 

Pleistocene

Atchison formation 1 

Baliard formation (C. W. Hibbard, 1958, Am. Jour. Sci., v. 

256, no. 1, p. 55, 56) 

Belleville formation 1 

Chase Channel formation 2 

Crooked Creek formation 2

United States Continued 

Kansas Continued 

Pleistocene Continued

tEmma Creek formation 2

Jones Ranch beds 2

Kansan drift 1

Kingsdown silt (as marl J)

McPherson formation 1

Meade formation (as gravel J)

Missler member (of Baliard formation) ; (as member of Meade 

formation 2)

Odee formation 2

Pearlette ash l member (of Sappa 

formation)

Peoria silt member (of Sanborn 

formation) 2

fSalt Creek gravel beds 1

Stump Arroyo member (of 

Crooked Creek formation) 2

Vanhem formation 2 

Tertiary

Abilene conglomerate 1 

Pliocene (see also Miocene, Pliocene 

and Pleistocene; and Miocene or 

Pliocene)

Calvert ash bed (in Ash Hollow 

member of Ogallala formation) 2

Dellvale ash bed (in Ash Hollow 

member of Ogallala formation) 2

Fort Wallace ash bed (in Ash 

Hollow member of Ogallala 

formation) 2

Rawlins ash bed (in Ash Hollow 

member of Ogallala formation) 2

Reager ash bed (in Ash Hollow 

member of Ogallala formation) 2

Reamsville ash bed (in Ash Hollow member of Ogallala formation) 2

XI member (of Rexroad formation) 2 

Pliocene, upper

Rexroad formation 2 

Pliocene, middle

Delmore formation 2 

Pliocene, lower

Edson beds (in Ogallala formation) 1

Rhinoceros Hill beds (in Ogallala

formation) l 

Miocene, Pliocene, and Pleistocene

t Plains marl 1 

Miocene or Pliocene

Woodhouse clay (in Ogallala formation) 1 

Cretaceous

Brookville terrane 1

Buckskinian series 2

Cawker terrane 1

Gove chalk 2

t Medicine beds '

Pete terrane 1

Rawlinsian series 2

Terra Cotta clay member (of 

Dakota formation) *
470 GEOLOGIC NAMES OF NORTH AMERICA.

United States Continued 

Kansas Continued 

Cretaceous Continued

Wallace shale 2

Wiskanian series 2 

Cretaceous (?)

Hills Pond peridotite 2 

Upper Cretaceous

fArickaree shale 1

Blue Hill shale member (of 

Carlile shale *)

Bridge Creek limestone member 

(of Greenhorn limestone) 1

Cockrum sandstone 2

Codell sandstone member (of 

Carlile shale) l ; member (of 

Benton shale in NE Colorado)

fDowns limestone (in Greenhorn 

limestone) *

Ellsworth formation 2

Fairport chalky shale member (of 

Carlile shale) 1

fFence-post limestone 1

JFort Hays division or group 1

Fort Hays limestone member (of 

Niobrara formation) 1

fGraham jasper (in Niobrara 

formation) 1

Hartland shale member (of 

Greenhorn limestone) 1

Janssen clay member (of Dakota 

formation) 2

Jetmore chalky member (of 

Greenhorn limestone) 1

Lake Creek shale member (of 

Pierre shale) 1

Lincoln limestone member (of 

Greenhorn limestone) 1

fLisbon shale *

Norton zone (in Niobrara formation) i

fOsborne limestone l

Pfeifer shale member (of Greenhorn limestone) 1

fReeder sandstone l

Rocktown channel sandstone 

member (of Dakota sandstone) 1

fRussell formation l

Salt Grass shale member (of 

Pierre shale) 1

Sharon Springs member (of 

Pierre shale) 1

Smoky Hill chalk or marl member (of Niobrara formation) 1

Solomon formation 2

fTrego zone (in Niobrara formation) i

fVictoria formation, clays, or 

shale 1

Weskan shale member (of Pierre 

shale) 1

United States Continued 

Kansas Continued 

Lower Cretaceous 

fBelvidere shale 1 

Black Hill shale 1 

Blue Cut shale 1 

Champion shell bed (in Kiowa

shale) 1 

Cheyenne sandstone l ; member

(of Purgatoire formation in

Oklahoma) 

fCorral sandstone (in Cheyenne

sandstone) 1 

fElk Creek beds (in Cheyenne

sandstone) l 

Fullington shale 1 

fGreenleaf sandstone * 

Kent bed ' 

Kiowa shale 1 

fKirby clay 1 

fLanphier beds (in Cheyenne

sandstone) 1 

Marquette member 1 (of Belvidere formation) 

Mentor formation 1 

Natural Corral member 1 (of

Belvidere formation) 

fSpring Creek clays * 

fStokes sandstone (in Cheyenne

sandstone) 1 

t Walker beds 1 

Windom member 1 (of Belvidere

formation) 

Permian

Admire group (as shale *) 

Afton limestone member (of

Wellington formation) 2 

fAlma limestone 1 

Americus limestone member (of

Foraker limestone) 1 

Annelly gypsum member (of

Wellington formation) 2 

Bader limestone (as formation l) 

Beattie limestone (as formation >) 

Big Basin sandstone ! 

Big Blue group or series 1 

Bigelow formation 1 

Blue Rapids shale 1 

Blue Springs shale 1 member (of

Matfield shale) 

Bruno limestone 1 

Buckeye shale 1 

Carlton limestone 1 

Cave Creek formation 1 

Cedar Hills anhydrite l 

Cedar Hills sandstone 1 

fCedar Point shales and shaly

limestones 1 

Chase group *

Chicago Mound formation 2 

Chikaskia member (of Harper

sandstone) 2 

Chishohn Creek shale member

(of Wellington formation) 2 

Cimarron group l 

fCottonwood formation x
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 471

United States Continued 

Kansas Continued 

Permian Continued

Cottonwood limestone l member 

(of Beattie limestone); limestone in Oklahoma

t Cotton wood shales 1

Council Grove group 1

Cresswell limestone l member 

(of Winfield limestone)

Crisfield member (of Salt Plain 

formation) 2

fCrusher Hill alternating shales 

and limestone 1

Day Creek dolomite1 : member 

(of Cloud Chief formation in 

Oklahoma)

Dog Creek shale 1

Donegal limestone *

Doyle shale l

Easly Creek shale l

fElmdale shale * or formation *

Elmo limestone member * (of 

Wellington shale)

t Enterprise shale l

Eskridge shale l

fFlint Hills division J

Fiorena shale member (of Beattie limestone); (as member of 

Garrison shale J)

t Florence limestone 1

Florence limestone member (of 

Barneston limestone); (as 

Florence flint *)

Flower-pot shale *

Fort Riley limestone l member 

(of Barneston limestone)

Funston limestone 1

Gage shale 1 member (of Doyle 

shale)

t Garrison shale l

Geuda salt measures 1

Geuda Springs shale member (of 

Wellington formation) 2

Grant shale 1 member (of Winfield limestone)

Greeley gypsum l

Grenola limestone (as formation i)

Hackberry shale *

Harper sandstone l

Havensville shale member (of 

Wreford limestone) 1

Herington limestone l member 

(of Nolans limestone); limestone in Oklahoma

Highland shale member (of Wellington formation) 2

Hollenberg limestone *

Hooser shale * member (of Bader 

limestone)

Hope gypsum *

Hutchinson salt member (of 

Wellington formation); (as 

Hutchison salt bed J)

United States Continued 

Kansas Continued 

Permian Continued

Janesville shale (R. C. Moore 

and M. R. Mudge, 1956, Am. 

Assoc. Petroleum Geologists 

Bull., v. 40, no. 9, p. 2273)

Jenkins clay 1

Kiger division l

Kingman sandstone member (of 

Harper sandstone) 2

Legion shale member l (of 

Grenola limestone)

fLuta limestone l

{Manhattan beds *

{Manhattan limestone * Marion concretionary limestone l

Marion flint 1

t Marion formation 1

Matfield shale l

Medicine Lodge gypsum l member (of Blaine formation)

Milan limestone member (of 

Wellington formation) 2

Morrill limestone 1 member (of 

Beattie limestone)

fNeosho shale member (of Garrison shale) 1

Nescatunga gypsum member (of 

Blaine formation)2

Neva limestone l member (of 

Grenola limestone)

Newbern shale *

Ninnescah shale 2

Nippewalla group 2

Nolans limestone l

Ogden flint l

Oketo shale l member (of 

Barneston limestone)

Onaga shale (as limestone x )

fPearl shale *

Prairie Creek limestone lentil 

(in Geuda Springs shale member of Wellington formation) 2

fRed Bluff sandstone *

Runnymede sandstone member 

(of Ninnescah formation) 2

Sabetha limestone l

Sallyards limestone member l 

(of Grenola limestone)

Salt Fork division l

Salt Plain shale l

Sanatorium limestone lentil (in 

Geuda Springs shale member 

of Wellington formation) 2

Schroyer limestone 1 member 

(of Wreford limestone)

Shimer gypsum member (of 

Blaine formation) 1

Slate Creek limestone member 

(of Wellington formation) 2

Solomon gypsum *

Stearns shale l

Stone Corral l dolomite
472 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Kansas-j-Continued 

Permian Continued

Stovall limestone 1 member (of

Winfield limestone) 

Strickler limestone 1 

fStrong flint 1 

fStrong City beds 1 

Sumner group 1 

fSun City marble 1 

{Thrall limestone member (of

Foraker limestone) 1 

Threemile limestone 1 member

(of Wreford limestone) 

Towanda limestone member (of

Doyle shale) ' 

Towle shale * member (of Onaga

shale) 

Udall limestone lentil (in Geuda

Springs shale member of Wellington formation) 8 

Wellington formation l 

t Wellington marble l 

West Point shale (in Admire

shale) l

Winfield limestone 1 

Wreford limestone 1 

Pennsylvanian

fAllen limestone member l 

Altoona limestone 1 

fAmericus beds 1 

{Barclay limestone J 

Bourbon formation 1 or group * 

Boyer sand 1 (subsurface)

 Burlingame shale 1

 Burlington limestone l 

1 Buxton formation 1

 Calhoun limestone 1 

Caneyville shale l 

fCarlyle limestone J 

Cave Springs sandstone 1 

fChautauqua sandstone 1 

fCoffeyyille limestone 1 

Columbia Ford limestone 1 

Concrete shale * 

Dashner limestone 1 

Dodge limestone J (subsurface) 

Dun limestone 1 

fDunlap limestone 1 

fEarlton limestone l 

Einstine sandstone 1 

Elk Falls limestone J 

Elm Branch shale l 

fEmporia blue limestone 1 

fEmporia reservoir shales 1 

fErie limestone 1 

Eudora limestone 1 

fEureka beds l 

{Eureka limestone 1 

Fall River sandstone 1 

Frenck shale * 

fGarnett limestone * 

Gorham sand 1 (subsurface) 

Hancock sand l (subsurface) 

Humboldt limestone 1 

Humphrey shale 1

United States Continued 

Kansas Continued

Pennsylvanian Continued

Humphrey Creek shale *

flndependence limestone 1

Institute limestone *

flola shale J

Kickapoo limestone l

fLaneville shale 1

La Cygne shale member 1 (of 

Marmaton formation)

fLecompton shale x

Le Roy shale x

Linwood shale 1

Linwood shales 8

fMarais des Cygnes coal series 1

fMarais des Cygnes shales 1

Mission Creek shale (in Deer 

Creek limestone) l

t Mound Valley limestone 1

f Mound Valley shale J

Naish limestone 1

Neodesha sandstone x Neosho limestone 1

Olpe shale l

Oswald lime l (subsurface)

fOswego limestone l

Ottawa limestone 1

fPainterhood limestone 1

fParsons formation 1

fPawnee limestone series 1

Peacock sand l (subsurface)

fPiqua limestone member 1

fPottawatomie formation 1

fPottawatomie series 1

Rainbow Bend sand J (subsurface)

Redd sand l (subsurface)

Reserve shale member 1 (of Falls 

City formation)

Robinett flags l

Rossville shales and sandstones *

Schubert Creek limestone 1

fShawnee sandstone *

Shunganunga shale J

Sni Mills limestone l

Sooy conglomerate J (subsurface)

fSpring Rock limestone x

Stalnaker sand 1 (subsurface)

fStanton limestone series 1

Stokes sand 1 (subsurface)

fStrawn limestone l

Tennison Creek shale 1

Uniontown limestone *

f Walnut shale 1

fWaverly flags 1

fWilson formation l

Wolf River limestone 1

Wyandotte group 1

fWyckoff limestone l 

Upper Pennsylvanian

Kawvian series 2 

Pennsylvanian (Virgil)

Aarde shale l member (of Howard limestone)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 473

United States Continued 

Kansas Continued

Pennsylvanian (Virgil) Continued 

Auburn shale l

Bachelor Creek limestone l member (of Howard limestone) 

Bern limestone (R. C. Moore and

M. R. Mudge, 1956, Am.

Assoc. Petroleum Geologist, v.

40, no. 9, p. 2276-2277. 

Big Springs limestone (in Lecompton limestone) 1 

Burlingame limestone member

(of Bern limestone); (as member of Wabaunsee formation1 ) 

Calhoun shale (as member of

Shawnee formation J) 

Caneyville limestone 1 

Cedarvale shale member (of

Scranton shale) 1 

Clay Creek limestone (in Kanwaka shale) 1 

Coal Creek limestone member

(of Topeka limestone) 1 

Deer Creek limestone (as member of Shawnee formation *) 

Doniphan shale (in Lecompton

limestone) 1 

Douglas group 1 

Dover limestone 1 member (of

Stotler limestone) 

Dry shale 1 member (of Stotler

limestone) 

Du Bois limestone member (of

Topeka limestone) 1 

Elgin sandstone; 1 member (of

Vamoosa formation in Oklahoma) 

Elmont limestone l member (of

Emporia limestone) 

Emporia limestone l 

French Creek shale J member (of

Root shale) 

Friedrich shale l member (of

Root shale) 

Grandhaven limestone l member

(of Stotler limestone) 

Happy Hollow limestone member

(of Scranton shale) 1 

fHartford limestone (in Shawnee

formation) 1 

Harveyville shale 1 

Haskell limestone 1 member (of

Stranger formation) 

Howard limestone l ; tmember

(of Shawnee formation) 1 

Iowa Point shale (in Calhoun shale) 1 

Ireland sandstone 1 member (of

Lawrence shale) 

Jackson Park shale member (of

Kanwaka shale) 1 

Jim Creek limestone 1 member

(of Root shale)

United States Continued 

Kansas Continued

Pennsylvanian (Virgil) Con.

Jonesburg sandstone member 

(of Lawrence shale; of Vamoosa 

formation in Oklahoma); (as 

member of Nelagoney formation »)

Kanwaka shale 1 ; fmember (of 

Shawnee formation) 1

Hereford limestone tmember (of 

Oread limestone) 1

Lawrence shale *; member (of 

Douglas formation) 1

Leavenworth limestone member 

(of Oread limestone) 1

Lecompton limestone J ; tmember (of Shawnee formation) 1

Maple Hill limestone 1 member 

(of Zeandale limestone)

Oread limestone 1 ; limestone 

member (of Vamoosa formation in Oklahoma)

tOsage limestone (in Shawnee 

formation) 1

tOsage City limestone 1

fOsage City shale (in Shawnee 

formation) 1

Oskaloosa shale (in Deer Creek 

limestone) 1

Ozawkie limestone (in Deer Creek 

limestone) 1

Reading limestone 1 member (of 

Emporia limestone)

Bobbins shale member l (of 

Stranger formation)

Root shale (R. C. Moore and M. 

R. Mudge, 1956, Am. Assoc. 

Petroleum Geologist, v. 40, 

no. 9, p. 2274 (fig. 1), 2275)

Sac-Fox subgroup l

Scranton shale 1 ; tmember (of 

Shawnee formation) 1

Severy shale *; tmemker (of 

Shawnee formation) 1

Shawnee group 1 ; tformation in 

Missouri and Iowa 1

Silver Lake shale member (of 

Scranton shale) 1

Soldier Creek shale 1 member 

(of Bern limestone)

Spring Branch limestone (in 

Lecompton limestone) 1

Stormont limestone member (of 

Pierson Point shale) 2

Stranger formation 1

Stull shale (in Kanwaka shale) 1

Tarkio limestone member (of 

Zeandale limestone); (as member of Wabaunsee formation1)

Tecumseh shale l or formation; 

tmember (of Shawnee formation) 1

Topeka limestone J ; tmember (of 

Shawnee formation) 1
474 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Kansas Continued

Pennsylvanian (Virgil) Con.

Tonganoxie sandstone l member 

(of Stranger formation)

Toronto limestone 1 member (of 

Oread limestone)

Utopia limestone 1 member (of 

Howard limestone)

Vinland shale 1 member (of 

Stranger formation)

Virgil series 1

Wabaunsee group (as formation i)

Wakarusa limestone l member 

(of Bern limestone)

Wamego shale member (of Zeandale formation); (as shale 2)

Westphalia limestone 1 member 

(of Stranger formation)

White Cloud shale 1 member (of 

Scranton shale)

Willard shale 1

Winzeler shale * member (of 

Howard limestone)

Zeandale formation (R. C. Moore 

and M. R. Mudge, 1956, 

Am Assoc. Petroleum Geologists Bull, v. 40, no. 9, p. 2276) 

Pennsylvanian (Missouri)

Argentine limestone l

Block limestone 1

Bonner Springs shale l

Bronson formation J or group 1

Canville limestone l

Captain Creek limestone member 

(of Stanton limestone) 1

Chanute shale 1 ; shale member 

(of Kansas City formation in 

Missouri) 1

Cherryvale shale 1 ; shale member (of Kansas City formation 

in Missouri) 1

Coffeyville formation 1

Corbin City limestone 1

Cottage Grove sandstone * 

Critzer limestone 1

t Dennis limestone l

Dodds Creek sandstone !

Drum limestone 1 ; limestone 

member (of Kansas City formation in Missouri) 1

fDudley shale * or shale member 

(of Pleasanton formation) l

Eudora shale 1 member (of Stanton limestone)

Fontana shale 1

Frisbie limestone J

Galesburg shale l

Hepler sandstone formation 8

Hertha limestone 1 ; limestone 

member (of Kansas City formation in Missouri) l

Hickory Creek shale 1

Hushpuckney shale 1

United States Continued 

Kansas Continued

Pennsylvanian (Missouri) Con.

lola limestone 1 ; limestone member (of Kansas City formation 

in Missouri) *

Island Creek shale l

Ladore shale 1 ; shale member (of 

Kansas City formation in 

Missouri) *

Lane shale 1 ; shale member (of 

Lansing formation in Missouri) 1

Lansing group1 ; formation in 

Missouri l

Linn subgroup 8

Little Kaw limestone member 1 

(of Stanton limestone)

Merriam limestone * 

Middle Creek limestone l

Mound City shale 1

Muncie Creek shale * 

Noxie sandstone lentil or member 

(of Chanute formation) 2

Olathe limestone member 1 (of 

Stanton limestone)

Paoli limestone 1

Pedee group 1

Pleasanton formation l

Quindaro shale l

Quivira shale (in Kansas City 

formation) 1

Spring Hill limestone 1

Stanton limestone 1 ; limestone 

member (of Lansing formation 

in Missouri) 1

Stark shale l

fThayer shale (in Kansas City 

formation) l

Vilas shale 1 ; shale member (of 

Lansing formation in Missouri) 1

Victory Junction shale member l 

(of Stanton limestone)

Wea shale 1

Wyandotte limestone l

Zarah subgroup * 

Middle Pennsylvanian

Blankenship sand 1 (subsurface)

Cattleman sand 1 (subsurface)

Chetopa shales 1

Colony sand * (subsurface)

Fox Bush sand J (subsurface)

Sallyards sand * (subsurface)

Welch chert 1 (subsurface) 

Pennsylvanian (Des Moines)

Altamont limestone 1 ; limestone 

member (of Oologah limestone 

in Oklahoma)

Anna cyclothem (including Anna 

shale) 2

Bandera shale 1 ; member (of 

Oologah limestone in Oklahoma)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 475

United States Continued 

Kansas Continued

Pennsylvanian (Des Moines) Con.

Bandera Quarry sandstone membera (of Bandera shale) 2

Breezy Hill limestone member 

(of Cherokee shale) of Senora 

formation in Oklahoma) 2

Cherokee shale 1

Coal vale cyclothem or formation 2

f Columbus sandstone (in Cherokee shale) *

Croweburg cyclothem or formation 2

Englevale channel sandstone 1

Fleming cyclothem or formation 8

fFort Scott coal series 1

Fort Scott limestone 1 ; fh'mestone 

member (of Henrietta formation)!

fFort Scott marble series (in 

Cherokee shale) 1

Idenbro cyclothem (including 

Idenbro limestone) 2

Knifeton cyclothem or formation 2

Laberdie cyclothem (including 

Laberdie limestone) 2

Labette shale; 1 fshale member 

(of Henrietta formation) 1

Lake Neosho shale member (of 

Altamont limestone) 2

Little Osage shale member (of 

Fort Scott limestone) 2

Marmaton group1 ; tMarmaton 

formation 1

Memorial shale l

Mineral cyclothem or formation 2

Mine Creek cyclothem (including 

Mine Creek shale) 2

Mulky cyclothem or formation 2

Neutral cyclothem or formation 2

Norfleet cyclothem (including 

Norfleet limestone) 2

Pawnee limestone 1 ; member (of 

Oologah limestone in Oklahoma)

Perry Farm cyclothem (including 

Perry Farm shale) 2

Pilot cyclothem or formation 2

Riverton cyclothem or formation 2

Rowe formation or coal cycle 2

Scammon cyclothem or formation 8

Stice cyclothem 2

Walter Johnson sandstone member (of Nowata shale) 2

Weir cyclothem or formation 2 

Pennsylvanian (Morrow)

Kearney formation 2 (subsurface) 

Mississippian (f)

Stanhope sand x (subsurface) 

Lower Mississippian

t Cherokee limestone 1

Cowley formation 2 (subsurface)

United States Continued 

Kansas Continued

Lower Mississippian Continued

Short Creek oolite member (of 

Boone limestone) 1 or (of Keokuk limestone)

Skelton shale J (subsurface)

Watchorn formation 2 (subsurface) 

Devonian or Silurian(f)

Younkin formation * (subsurface) 

Middle Devonian

Ediger limestone 1 (subsurface) 

Silurian

Hollow dolomite * (subsurface) 

Ordovician

Smock sand 1 (subsurface)

Sluss sand l (subsurface)

Stapleton zone * (subsurface)

Urschel lime J (subsurface) 

Ordovician(f)

Engle shale 1 (subsurface) 

Kentucky 

Pleistocene

Fulton loam l

Graves Creek formation 1

Hickman group 1

Paducah formation l

Tennessee River gravels *

Union formation * 

Tertiary or older

Tip Top sand l 

Pliocene or Pleistocene

Irvine formation l 

Penns ylvanian

Aberdeen sandstone (in Pottsville formation) 1

Baker sand [ (subsurface)

Battery Rock cyclothem (including Battery Rock sandstone or conglomerate) 8

Beattyville shale 1

fBeaver sandstone l

Bee Spring sandstone *

Bee Tree shale 2

Bald Hill shale (in Henshaw 

formation) 1

Carthage limestone (in McLeansboro formation) 1

Corbin conglomerate lentil * (in 

Lee formation)

fCurlew sandstone (in Tradewater formation) 1

Deanefield shale (in Pottsville 

formation) 1

DeKoven formation 1

Dingus limestone (in Pottsville 

formation) 1

fDixon formation *

fDixon sandstone (in Henshaw 

formation) 1

Dwale shale * 

Elkins Fork shale 1

Epperson sand 1 (subsurface)

Finnie sandstone (in Tradewater 

formation) 1
476 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Kentucky Continued

Pennsylvanian Continued

Finnie Bluff sandstone 1

Flat Lick sandstone 1

Flat Top Mountain sandstone 1

Flint Ridge flint 1

Grundy Knob limestone 2

Hartford limestone 1

High Rock sandstone *

Horton sand J (subsurface)

Jolly limestone (in McLeansboro 

formation) 1

Kendrick shale 1

Kinchloe limestone 1

Lead Creek limestone l

Lewisport limestone 1

Livingstone conglomerate 1

Lost Creek h'mestone 1

MagofBn beds l

Mount Gilead sandstone (in 

Henshaw formation) 1

Mount Gilead shale (in Henshaw 

formation) 1

Mulford formation l

Newburg limestone 1

Olive Hill fire clay (in Pottsville 

formation) 1

Peach Orchard sandstone l

Pike sand 1 (subsurface)

fPine Mountain group 1

Puncheon Creek sandstone 1

fRockcastle group 1

Saltlick beds *

Sebree sandstone (in Carbondale 

formation) l

fSeven Sisters sandstone l

South Carrollton limestone l

Top Hill sandstone l

Vanderburg sandstone (in Henshaw formation) * Wages sand 1 (subsurface)

Williamsburg sand l (subsurface)

Wild Cat Mountain conglomerate 1 

Upper Pennsylvanian

Anvil Rock sandstone member 

(of Lisman formation); (as 

member of McLeansboro formation *)

Henshaw formation *

Lisman formation 1

Madisonville limestone 1 member (of Lisman formation)

Providence limestone 1 member

(of Lisman formation) 

Middle Pennsylvanian

Blacksnake sandstone (of Hance 

formation) *

Catron formation l

Cawood sandstone member (of 

Hance formation) l

Curlew limestone member (of 

Tradewater formation) 1

United States Continued 

Kentucky Continued

Middle Pennsylvanian Continued 

Fork Ridge sandstone member

(of Mingo formation) 1 

Hance formation l 

Harian sandstone 1 

Hignite formation 1 

Jesse sandstone member (of

Catron formation) 1 

Naese sandstone member (of

Lee formation) l 

Pnckett sandstone member (of

Mingo formation) 1 

Red Spring sandstone member

(of Hignite formation) 1 

Reynolds sandstone member (of

Hignite formation) 1 

Slater sandstone member (of

Mingo formation) 1 

Tradewater formation 1 ; group

in Illinois 

Whetstone Creek shale member

(of Breathitt formation) 1 

Yellow Creek sandstone member

(of Hance formation) 1 

Lower and Middle Pennsylvanian

Breathitt formation 1 

Lower Pennsylvanian

Caseyville sandstone 1 ; group in

Illinois

Rockcastle sandstone or conglomerate member (of Lee

formation) 1 

Mississippian 

Atherton clay l 

Barlow lime * (subsurface) 

Barlow sand 1 (subsurface) 

Beaver Creek "sand" 1 

fBirdsville formation or group ' 

Brooks bed 1

Cloverport "sand" * (subsurface) 

Corder "sand" 1 (subsurface) 

Eggners Ferry chert 2 

Kentucky shale 1 

Linietta clay ' 

Major sand 1 (subsurface) 

Mammoth Cave series 1 

Morris Mountain shaly member

(of Logan formation) 1 

Mount Pisgah sand 1 (subsurface) 

fOhara limestone member l (of

Ste. Genevieve limestone) 

Otter sand 1 (subsurface) 

Pellville sand 1 (subsurface) 

Petersville shale 1 

fPrinceton limestone 1 

Rock House sandstone l 

fShot Pouch sandstone l 

Slickford sand l (subsurface) 

Vanceburg black shale l 

Vanceburg sandstone member 1 (of

Cuyahoga formation) 

Weir sand 1 (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 477

United States Continued 

Kentucky Continued 

Mississippian Continued

West Point member (of Warsaw

formation) * 

Upper Mississippian 

Bethel sandstone 1 

fBig Clifty sandstone 1 

Bradley sand 1 (subsurface) 

Buffalo Wallow formation l 

Clover Creek limestone 1 

Fredonia oolite member (of Ste.

Genevieve limestone) * 

Garfield sandstone 1 

Gasper formation or oolite 1 

Girkin formation l 

Glen Dean limestone 1 

Hardinsburg sandstone l 

Jett sand 1 (subsurface) 

Leitchfield formation * 

Leitchfield marl l 

Levias sandstone member (of

Ste. Genevieve limestone) * 

fLockhart formation 1 

Penrod sand * (subsurface) 

Sample sandstone or sandstone

member (of Gasper oolite) ' 

fSloan Valley h'mestone 1 

Somerset shale member (of

Warsaw formation) * 

Spann limestone member (of

Pennington shale) 1 

fStephensport bed l 

Stephensport (broad usage) 1 

Tar Springs sandstone 1 

Tribune sandstone 1 

Wildie sandstone member (of

Warsaw formation) l 

Lower Mississippian 

Athertonville facies (of Brodhead

formation) 2

Bluestone facies (of New Providence formation) 2 

Boone Gap facies (of New

Providence formation) 8 

Brodhead formation 8 

Caney Creek member (of Brodhead formation) 8 

Christy Creek siltstone member

(of Brodhead formation) 8 

Clay City siltstone member (of

New Providence formation) 2 

Clementsville limestone member

(of Brodhead formation) 2 

Combs Mountain siltstone

member (of Brodhead formation) 2 

Conway Cut siltstone member (of

Brodhead formation) * 

Culver Springs shale member

(of Brodhead formation) 2 

Cummins Station shale member

(of Muldraugh formation) 2 i

United States Continued 

Kentucky Continued 

Lower Mississippian Continued

Dicks River facies (of New 

Providence formation) 2

Farmers siltstone member (of 

New Providence formation) 8

Forbush Creek facies (of New 

Providence formation) 2

Frenchburg siltstone member (of 

Brodhead formation) 2

Ginseng siltstone member (of 

Brodhead formation) *

Greasy Creek facies (of Fort 

Payne formation) 8

Gum Sulphur siltstone member 

(of New Providence formation) 8

Haldeman siltstone member (of 

Brodhead formation) 8

Holtsclaw sandstone 1

Holtsclaw Hill facies (of Brodhead formation) 2

Hummel facies (of Muldraugh 

formation) 8

Indian Fort shale member (of 

Brodhead formation) 2

Irvine facies (of Brodhead formation) 2

Junction City facies (of New 

Providence formation) 2

Keith Knob facies (of New 

Providence formation) 2

Kenwood sandstone l

Lebanon Junction siltstone member (of Brodhead formation) 8

Liberty facies (of Brodhead formation) 2

McKinney Knob member (of 

Brodhead formation) 2

Maretburg facies (of Muldraugh 

formation) 2

Morehead facies (of Brodhead 

formation) 8

Muldraugh formation 2

Olive Hill facies (of Muldraugh 

formation) 8

Perry Branch siltstone member 

(of Brodhead formation) 8

Pilot Knob facies (of Brodhead 

formation) 8

Rolling Fork limestone member 

(of Brodhead formation) 2

Rothwell shale member (of Muldraugh formation) 2

Stanton facies (of New Providence formation) 2

Steels Knob chert facies (of

Muldraugh formation) 2 

Devonian

Campton sand l (subsurface)

Coralline Falls limestone 1

Irvine sand * (subsurface)

Menifee sand 1 (subsurface)
478 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Kentucky Continued 

Upper Devonian

Duffin limestone 1

Ragland sand l (subsurface) 

Middle Devonian

Beechwood limestone member 

(of Sellersburg limestone) J

Boyle limestone 1

Casey limestone 1

Gainesville sand l (subsurface)

Harg shale facies (of Portwood 

formation) 8

Kiddville limestone 1

Moulder sand l (subsurface)

Portwood formation 2

Ravenna shale facies (of Portwood formation) 2 

Silurian and Devonian

Panola formation J 

Silurian

Holy Cross sandstone 2

Oldham limestone 1

Olympia sand J (subsurface)

Plum Creek clay 1

Rodemar sand x (subsurface)

Scottsville sand 1 (subsurface)

Stanton sand 1 (subsurface) 

Middle Silurian

Alger formation l

Boyds Creek sand 1 (subsurface)

Crab Orchard shale l

Estill clay 1

Flades clay 1

Indian Fields formation 1

Louisville limestone 1

Lulbegrud clay 1

Ribolt clay shale 1

Waco limestone 1 

Lower Silurian

Brassfield limestone 1 

Ordovician (see also Cambrian and 

Ordovician)

Devils Hollow division (of Lexington limestone) 2

t Kentucky marble *

Sulphur Well member (of Cynthiana formation) 2

Sunnybrook sand 1 (subsurface) 

Upper Ordovician

Bardstown coral reef (in Liberty 

formation) 1

Caney sand J (subsurface)

Cumberland sandstone l

Economy member (of Latonia 

shale) 1

Fisherville coral reef (in Waynesville limestone) 1

Fowler limestone 1

Garrard sandstone l

Gilbert limestone (in McMillan 

formation) l

Gratz shale J

Haggard limestone (in Cumberland sandstone) 2

Latonia shale 1

United States Continued 

Kehtucky Continued

Upper Ordovician Continued

Maysville group l

Million shale 1

Oregonia division (in Arnheim 

formation) *

Paint Lick limestone l

Rennix limestone 1

Southgate member (of Latonia 

shale) 1

Sunset division (in Arnheim 

formation) 1

Tate member (of McMillan formation) ' 

Middle and Upper Ordovician

Winchester limestone 1 

Middle Ordovician

Benson limestone l

Blue Grass group l

Bourbon series 1

Brannon limestone member (of 

Cynthiana formation); (as 

cherty member of Flanagan 

limestone >)

Bromley shale (See p. 622)

Camp Nelson limestone l

Cornishville limestone member 

(of Perryville formation) 1

Curdsville limestone 1

Cynthiana formation 1

Faulconer limestone member (of 

Perryville formation) 1

Fianagan limestone 1

Greendale limestone (in Cynthiana formation) 1

Highbridge limestone or group l

Jessamine limestone 1

Jessamine series 1

Lexington limestone, 1 formation 

or group

Logana formation (as bed !)

Millersburg limestone member 

(of Cynthiana formation) 1

Nicholas limestone member (of 

Cynthiana formation) 1

Oregon limestone 1

Paris formation 1

Perryville formation 1

Rogers Gap division (in Cynthiana formation) '

Salvisa limestone member (of 

Perryville formation) 1

Tyrone limestone '

fWilmore limestone '

Woodburn limestone member 

(of Cynthiana formation); (as 

phosphatic member of Flanagan Limestone *) 

Lower Ordovician

White Oak sand l (subsurface) 

Cambrian and Ordovician

Beech Bottom sand * (subsurface) 

Middle Cambrian

Lincoln sandstone 2 (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 479

United States Continued 

Louisiana 

Recent

Lebeau member (of Le Moyen 

formation) 2 (subsurface and 

isurface)

Le Moyen formation2 (subsurface 

and surface)

Mermentau member (of Le 

Moyen formation) 2 (subsurface 

and surface) 

Plei& tocene

Bentley formation 2

Montgomery formation 2

Pontchartrain clay 1

Port Hudson formation 1

Prairie formation 2

Williana formation 2 

Tertiary

fSparta sands l 

Pliocene

Foley formation 2 (subsurface)

Mamou member (of Foley formation) 3 (subsurface)

Steep Gully member (of Foley

formation) 2 (subsurface) 

Miocene

Bl punts Creek member (of Fleming formation) 2

Carnahan Bayou member (of 

Fleming formation) 2

Cassel Hill member (of Catahoula 

formation) 2

Castor Creek member (of Fleming formation) 2

Cialk Hills member (of Catahoula 

formation) 2

Dough Hills member (of Fleming 

formation) 2

Lena member (of Fleming formation) 2

Williamson member (of Fleming 

formation) 2

Mosley Hill formation 2 

Eocene

t Mansfield group * 

Eocene, upper

Bayou Calamus lentil (in Verda

member of Yazoo clay) 2 

Danville Landing group 1 or

beds 1

Kimbrel bed * 

Montgomery bed (in Jackson

formation) 1 

Mossy Ridge lentil (in Verda

member of Yazoo clay) 2 

Myatt lentil (in Verda member

of Yazoo clay) 2 

Saddle Bayou lentil (in Verda

member of Yazoo clay) 2 

Tullos clay member (of Yazoo

clay) 2 

Union Church transition phase

(in Tullos member of Yazoo

clay) 2

United States Continued 

Louisiana Continued

Eocene, upper Continued

Verda member (of Yazoo clay) 2

Youngs Bluff bed 1

Zenoria lentil (in Verda member

of Yazoo clay) 2 

Eocene, middle

t Arcadia clays l

Cane River formation 1

Cock field formation 1

fCockfield lignite 1

Creola member (of Yegua formation) 2

Dodson member (of Cook Mountain formation) 2

Little Natches member (of Cook 

Mountain formation) 2

Milams member (of Cook Mountain formation) 1

fMinden formation l

t Mount Lebanon formation l

fSt. Maurice formation *

Saline Bayou member (in Claiborne group) 2

Sparta sand l 

Eocene, lower

Bayou Lenann member (of 

Pendleton formation) 2

Beulah Church sand lentil (in 

Slaughter Creek member of 

Pendleton formation) 2

High Bluff member (of Pendleton formation) 2

Marthaville formation 2

Pearson glauconite member (of 

Sabinetown formation) 2

fSabine formation 1

Slaughter Creek member (of 

Pendleton formation) 2

Stone Coal Bluff lignite (in 

Slaughter Creek member of 

Pendleton formation) 2 

Paleocene

Benson facies (of Cow Bayou 

member of Logansport formation) 2

Bisteneau member (of Hall Summit formation) 2

Chemard Lake lignite lentil (of 

Naborton formation) 2

Cow Bayou member (of Logansport formation) 2

Dolet Hills member (of Logansport formation) 2

Grand Bayou member (of Hall 

Summit formation) 2

Hall Summit formation 2

Lime Hill member (of Logansport formation) 2

Logansport formation 2

Lojggy Bayou member (of Hall 

Summit formation) 2

Lula facies (of Cow Bayou member of Logansport formation)2

Naborton formation 2
480 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Louisiana Continued

Cretaceous(f)

St. Landry marble >

Upper Cretaceous 

Haynesville sand l (subsurface) 

Monroe gas rock l (subsurface) 

Oakes sand l (subsurface) 

Shreveport gas sand 1 (subsurface) 

Vivien sand 1 (subsurface) 

Zwolle marl* (subsurface)

Upper Cretaceous (?) 

Bayou Chicot limestone 1 

t Winnfield limestone *

Lower Cretaceous

Bodcaw sand lens 1 (subsurface) 

Davis oil and gas horizon 1 (subsurface)

Dillpn gas horizon l (subsurface) 

Dixie oil horizon l (subsurface) 

Eubanks sand > (subsurface) 

Herndon oil sand 1 (subsurface) 

Hosston formation 2 (subsurface) 

Rodessa formation 2 (subsurface) 

SHgo formation 2 (subsurface) 

Tillman sand lens * (subsurface) 

Wickett oolitic zone 1 (subsurface)

Upper Jurassic

Bossier formation 8 (subsurface) 

Cotton Valley group2 (subsurface) 

Haynesville formation 2 (subsurface)

Shongaloo member (of Schuler 

formation) 2 (subsurface)

Pennsylvanian (?)

Morehouse formation 2 (subsurface) 

Maine

Paleozoic

South Mapleton andesite 1

Upper Paleozoic 

Cadillac granite 8

Post-Carboniferous 

Biddeford granite 1 

Burnt Meadow syenite *

Carboniferous (f)

Brave Boat Harbor biotite granite 1 

Gushing granodiorite 1 

Drews Lake granite J 

Katahdin granite 1

Pre-Carboniferous(f) 

Falmouth pegmatite 1 

Westbrook granite J

Pennsylvanian (f)

Cape Elizabeth formation 1 

Casco Bay group 1 

Diamond Island slate l 

Jewel! phyllite l 

Mackworth slate l 

Scarboro phyllite 1 

Spring Point greenstone 1 

Spurwink limestone 1 

Towow formation 1

Devonian or Carboniferous 

Waldo granite 2

United States Continued 

Maine Continued 

Devonian

Kineo rhyolite *

t Mapleton granite 1

Moose River group (as sandstone')

Prettymarsh diorite *

Seboomook formation (as slate 1 ) 

Devonian(f)

Agamentieus complex l

Berwick quartz diorite 1

Cape Neddick gabbro 1

Castle Hill andesite 1

Castle Hill tuff 1

f Chapman trachyte *

Edmunds Hill andesite 1

Haystack rhyolite 1

Hedgehog trachyte * Hobart Hill andesite l

Rangeley conglomerate *

York Harbor biotite granite l 

Upper Devonian

Mapleton sandstone 1

Perry formation 1 

Pre-late Devonian

Ore Mountain diorite 2 

Lower Devonian

Chapman sandstone 1

Fort Kent shale 2

Square Lake limestone 1 

Silurian and Devonian

fCobscook series *

Cobscook Bay series 1 

Silurian

Aroostook limestone 1

Ashland limestone * Ashland shale J

fCampobello group *

Chesuncook limestone 1

Dennys formation 1

Frenchmans Bay series 2

fLeightons Cove series 1

Lobster Lake formation (asseries 1 )

Mars Hill conglomerate 1

t Moose Island shale 2

Pembroke formation 1

Ripogenous series 1

Sheridan sandstone J

Vassalboro sandstone 1

Vinalhaven rhyolite 1

Waterville shale (also slate) 1

Winthrop phyllite 2 

Silurian(f)

Hope limestone 1 

Upper Silurian and Lower Devonian

Ireson felsite *

Penobscot Bay granite l 

Upper Silurian

Eastport formation l

Hersey red shale member (of 

Pembroke formation) 1

Leighton gray shale member (of 

Pembroke formation) 1

Seigas sandstone 2

Thorofare andesite l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 481

United States Continued 

Maine Continued 

Middle and Upper Silurian

Edmunds formation l 

Middle Silurian

Ames Knob formation l

Danville injection gneiss 2

Deer Rips time-silicate gneiss 2

Jay granite 1

Quoddy shale l

Taylor Brook injection gneiss 2 

Probably Ordovidan and Silurian

Berwick formation (as gneiss J)

Eliot formation (as slate ')

Kittery quartzite l 

Cambrian or Ordovidan

Rockland formation 1

Rockport limestone member (of 

Rockland formation) 1

Weskeag quartzite member (of

Rockland formation) 1 

Cambrian and Ordovidan

Taconic limestone 1 

Cambro-0rdovidan(?)

Androscoggin gneiss and schist 2

Bates limestone 2

Hill Ridge biotite schist 2

Minwah limy gneiss 2

Sabattus garnet schist 2

Stetson Brook limestone 2

Tacoma series 2

Thorncrag limy gneiss 2 

Cambrian(f)

Battie quartzite 1

Calderwood formation 1

Castine volcanics 1

Coombs limestone member (of 

Islesboro formation) 1

Islesboro formation 1

North Haven greenstone 1

Pejepscot gneiss 2

Penobscot formation 1 

Lower Cambrian

Grand Falls formation (Rudolph

Ruedemann and E. S. C.

Smith, 1935, Am. Jour. Sci.,

5th ser., v. 30, no. 178, p. 354)

Cambrian or Precambrian(f)

Cranberry Island series 1

Schooner Head series 1

Sutton Island series 1 

Precambrian and Silurian

Bar Harbor series 1 

Precambrian or Cambrian

Ellsworth schists 1 

Precambrian and later

Bartlett Island series 1 

Precambrian

Branch Pond gneiss 1

Hogback schist 1

Knox gneiss l 

Age(f)

Aroostook Falls diabase 1

Brownville slate l

Byron schist 2

Mars Hill diabase l

United States Continued 

Maine Continued 

Age (?) Continued

Noisy Brook gneiss 8

Phipsburg limestone *

Portland clays l

Quoggy Joe quartz trachyte l

Seawall metafelsite 2

Traveller rhyolite *

Tumbledown gneiss 2

Uncle Israels granite 2

Winterport granite type 2

Woodland trachyte l 

Maryland

Pleistocene and Recent

McHenry formation * 

Pleistocene

Beaverdam sand 2

Cornfield Harbor clays !

Parsonsburg sand 2

Sunderland formation *

Talbot formation l

Walston silt 2

Wicomico formation l 

Pliocene(f)

Brandywine formation l or gravel 

Miocene(f)

North Keys sand 3 

Miocene, middle and upper

Chesapeake group l

St. Marys formation 1 

Miocene, middle

Calvert formation *

Choptank formation l

Fairhaven diatomaceous member 

(of Calvert formation) 1

Plum Point marl member (of

Calvert formation) 1 

Eocene (see also Upper Cretaceous 

and Eocene)

fPiscataway sands * 

Eocene, upper

Piney Point formation 2 (subsurface) 

Eocene, lower and middle

Marlboro clay member (of Nanjemoy formation) l

Nanjemoy formation l

Potapaco clay member (of Nanjemoy formation) l 

Eocene, lower

Piscataway indurated marl member (of Aquia formation) 1 

Paleocene

Brightseat formation 2 

Upper Cretaceous and Eocene

fSevern formation 1 

Upper Cretaceous

Albirupean black marl 1

fAlbirupean formation 1

Magothy formation 1

Patapsco formation l

fSassafras River greensand l 

Lower Cretaceous

Arundel formation 1 or clay

fBaltimorean formation l
482 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Maryland Continued

Lower Cretaceous Continued

Federal Hill beds (in Patapsco 

formation) 1

Hawkins Point clays 1

Patuxent formation l 

Upper Triassic

Buck Lodge diabase 1

Emmitsburg facies 1

fPotomac marble :

Taneytown facies l 

Upper Paleozoic(f)

Ellicott City granite 1 

"Post-Gknarm"

Guilford granite 2

Gunpowder granite l

Laurel migmatite 2

Port Deposit gneiss 1 or granite

Sykesville granite l 

Lower Pakozoic(?)

Cockeysville marble 1

Glenarm series 1

Ijamsville phyllite 2

Setters formation 1

Silver Run limestone 2

Urbana phyllite 2

Wakefield marble 2 

Permian

fFrostburg formation 1 

Carboniferous(f)

Woodstock granite l 

Pennsylvaman

Barton limestone (in Conemaugh 

formation) *

Barton red shale (in Conemaugh 

formation) l

Barton sandstone (in Conemaugh 

formation) 1

Bluelick limestone (in Conemaugh formation)»

Borden sandstone (in Monongahela formation) 1

Clarysville sandstone (in Conemaugh formation) *

Ellerslie fire clay (in Allegheny 

formation) 1

Ellerslie sandstone (in Allegheny 

formation) l

Friendsville black shale (in Conemaugh formation) 1

Hoffman limestone (in Conemaugh formation) l

Hoffman sandstone (in Conemaugh formation) l

Lonaconing sandstone (in Conemaugh formation) *

Luke clay (in Allegheny formation) l

Meyersdale limestone (in Conemaugh formation) l

Montell sandstone (in Allegheny 

formation) 1

Mount Savage fire clay (in Pottsville formation) l

United States Continued 

Maryland Continued

Pennsylvanian Continued 

Mount Savage sandstone (in

Allegheny formation) l 

Redstone sandstone (in Monongahela formation) l 

Sampson Rock sandstone (in

Pottsville formation) 1 

Savage formation ' 

Thomas limestone (in Conemaugh formation) * 

Thomas sandstone (in Conemaugh formation) * 

Wellersburg limestone (in Conemaugh formation)* 

Westernport sandstone (in Allegheny formation) 1 

Woods Run shale (in Conemaugh

formation) 1 

Upper Devonian 

Avilton conglomerate * 

Parkhead sandstone member (of

Jennings formation) 1 

Lower Devonian

fCorrigan formation * 

Shriver chert l 

Silurian

Cedar Cliff limestone lens (in

Wills Creek shale) l 

Cresaptown iron sandstone l 

Indian Spring red shales or sandstone (in Tonoloway limestone) 1 

Rabble Run sandstone member

(of McKenzie formation) l 

Tonoloway limestone 1 

Wills Creek shale 1 

Middle Silurian

Cumberland facies (of Clinton

formation) 2

McKenzie formation or limestone *

Rose Hill formation 1 

Ordovician(f)

Cardiff conglomerate 1 

Post-Lower Ordovician 

Baltimore gabbro 2 

Middle Ordovician 

Row Park limestone 2 

St. Paul group 2 

Lower Ordovician 

Grove limestone 1 

fLe Gore limestone 1 

Cambrian(f)

Sugarloaf Mountain quartzite 2 

Upper Cambrian 

Big Spring Station member (of

Conococheague limestone) 2 

Frederick limestone l 

Lower Cambrian

Sugarloaf sandstone ' 

Weverton quartzite or formation

(as sandstone !) 

Precambrian 

Baltimore gneiss 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 483

United States Continued 

Maryland Continued 

Precambrian Continued

Cockeysville volcanics 1

Deer Creek quartzite 1

Hartley augen gneiss 1

Relay quartz diorite l

fState line serpentine 1

fSusquehanna mica schist 1 

Precambrian(l}

Catoctin metabasalt, greenstone, 

or formation (as schist')

Ilchester granite 1

Libertytown metarhyolite 2

Sams Creek metabasalt 2 

Age(f)

Bear Island granodiorite 2

Frenchtown diorite l

Kensington granite-gneiss 2

Rowlandville granite l 

Massachusetts 

Pleistocene

Aquinnah conglomerate 1

fBarnstable series 1

Dukes boulder bed 1

Middleboro clay 1

fNashaquitsa series 1

Moshup till member (of Jameco 

formation) 1

fNaushon series 1

Sankaty sand 1

fSankaty Head beds 1

Taunton clays *

fTisbury beds or gravel 1

fTruro series 1

Weyquosque formation 1 

Tertiary and Quaternary

Cape Cod series 1 

Upper Cretaceous

Indian Hill series 1 

Triassic

Turners Falls sandstone 2 

Upper Triassic

fBlack Rock diabase 1

Chicopee shale 1

Deer field diabase 1

Granby tuflf 1

Greenfield bed 1

Hampden diabase 1

Holyoke diabase 1

Leverett breccia 1

Longmeadow sandstone 1

Medford diabase 1

Mount Toby conglomerate J

Sugarloaf formation (as arkose l) 

Pre-Triassic

Amherst schist 1

Erving hornblende schist 1

Joshua schist 2

Whately bed l

Whitmores Ferry amphibolite 1 

Upper Pakozoic(f)

Straw Hollow diorite 1 

Middle Paleozoic

Dry Hill granite gneiss 2

Poplar Mountain gneiss 2

504835 59 6

United States Continued 

Massachusetts Continued 

Lower Paleozoic

fNahant gabbro 1

fNew Bedford gneiss 1

fSaugus granodiorite or quartz

diorite 1 

Lower Pakozoic(?)

Dedham granodiorite 1

Natick granite 1

Salem gabbro-diorite l 

Carboniferous or Post-Carboniferous

fBolton gneiss 1

Coys Hill granite l

Dana diorite 1

Dracut diorite 1

Fitchburg granite 1

Hardwick granite 1

Hubbardston granite 1

Middlefield granite l

Millbury limestone l

New Salem aplite 1

"New Salem serpentine l

 North Amherst granite 1

 Pelham granite 1

 Pelham quartzite l 

Prescott diorite 1

 Swan Pond granite l 

"Vernon gneiss 1

 Wachusett gneiss 1

 Wilbraham gneiss l 

Carboniferous (see also Devonian or 

Carboniferous) 

Andover granite 1 

Attleboro sandstone l 

Beverly syenite 1 

Boylston schist 1 

Brimfield schist 1 

Harvard conglomerate lentil (in 

Worcester formation) 1

 ( Harvard granite l

Nashoba formation 2

fNorfolk Basin series l

Oakdale quartzite 1

Oxford schist 1

Paxton quartz schist 1

Quabin quartzite 1

Rocky Woods conglomerate 1

fSalem syenite l

Squam granite 1

fWamsutta volcanics l

Ware schist 1

Worcester formation (as phyllite !)

fWorcester quartzite J 

Carboniferous (f)

Belchertown tonalite 1

Williamsburg granodiorite 1 

Pre-upper Carboniferous(f)

Dracut nprite 1 

Pennsylvanian

Bellingham conglomerate l

Dighton conglomerate l

Mansfield beds l

Pondville conglomerate 1

Seekonk beds 1
484 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Massachusetts Continued 

Pennsylvanian Continued

Seekonk conglomerate *

Tenmile River beds l

Wamsutta formation 1

Westyille shale l 

Mississippian ( ?)

Quincy granite 1 

Mississippian(f) or older

Monson gneiss (as granodiorite*) 

Devonian or Carboniferous

Blue Hill granite porphyry 1

Boston Bay group 1

Brighton melaphyre 1

Brookline conglomerate member 

(of Roxbury conglomerate) 1

Cambridge slate 1

fCape Ann granite 1

Dorchester slate member (of 

Roxbury conglomerate) 1

Lynn volcanic complex 1

Mattapan volcanic complex 1

fNeponset conglomerate 1

fPeabody granite 1

Roxbury conglomerate 1

Shawmut group 1

fSomerville slate *

fSquantum slates 1

Squantum tillite member (of 

Roxbury conglomerate) 1

Tufts quartzite member (of Cambridge slate) 1

fWest Roxbury slate 1 

Devonian(?)

Ironstone quartz diorite 1

fJoes Rock granite 1

Milford granite 1

Sharon syenite 1

Wolfpen tonalite 1 

Upper Devonian(f}

Ayer granodiorite (as granite *) 

Probably Lower Devonian

Newbury volcanic complex 1 

Silurian and Devonian(f)

Bernardston formation ' 

Silurian

Granville enstatite serpentine 1

t Greylock limestone l 

Silurian(f)

Goshen schist 1

Leyden argillite l 

Lower Silurian

Russell serpentine x 

Ordovidan and Silurian

Merrimack quartzite 1 

Ordovidan and Silurian(?)

Conway formation (as schist J) 

Ordovidan

Bellowspipe limestone l

fBellowspipe quartzite !

Chester amphibolite 1

fEverett schist 1

Greylock schist 1

Hawley schist 1

fPlainsfield schist 1

United States Continued 

Massachusetts Continued 

Ordovidan Continued

Savoy schist 1

Westfield serpentine l 

Middle Ordovidan

Berkshire schist 1

fCheshire schist 1 

Cambrian and Ordovidan

Egremont limestone *

f Mount Washington series *

Stockbridge limestone 1 or group 

Cambrian and younger and older(f)

fBlue Hills complex 1 

Cambrian(?)

Milton quartzite 1 

Upper Cambrian

Green Lodge formation 1 

Middle Cambrian

Braintree slate l

Lower Cambrian to Lower Ordovidan

fBerkshire limestone 1 

Lower Cambrian

Cheshire quartzite 1

Dalton formation l

Hoppin slate 1

 Nahant limestone *

 'Nahant schist 1 

"Shutesbury serpentine 1 

1 Veymouth formation l

Lower Cambrian(f) 

Hoosae schist l 

Rowe schist 1

Precambrian or Upper Ordovidan 

Newburyport quartz diorite 1

Precambrian or Cambrian 

Lynnfield serpentine 1

Precambrian

Becket granite gneiss 1 

Berkshire County series 1 

fBlan[d]ford limestone 1 

Coles Brook limestone l 

"East Lee gneiss 1

 East Lee limestone > 

"Goose Pond limestone 1 

"Grafton quartzite 1

 Greylock series 1 

Hinsdale gneiss 1 

fHinsdale limestone 1 

fHop Brook limestone 1 

Kendall Green slate l 

Lee quartz diorite 1 

Lincoln slate 1 

Marlborp formation l 

Northbridge granite gneiss 1 

fOtis limestone 1 

Quincy syenite l 

Stonybrook quartzite 1 

fSutton gneiss 1 

fTyringham gneiss > 

Waltham gneiss 1 

Washington gneiss ' 

Woburn formation l 

Precambrian(f)

Westboro quartzite 1
INDEX TO THE GEOLOGIC NAMES OP NORTH AMERICA 485

United States Continued 

Massachusetts Continued

Age(f)

Blandford serpentine and pyrox- enite l 

' Naugus Head series *

 Pelham serpentine l 

"Shelburne gneiss l

 'Worcester County gneiss 1 

Michigan 

Pennsylvanian

Eaton sandstone member (of 

Saginaw formation) 2

Grand Ledge cyclothem (in Saginaw formation) 3

Grand River formation 2

Ionia sandstone l member (of 

Saginaw formation)

fJackson formation 1

Parma sandstone 1

Saginaw formation l

Woodville member (of Saginaw

formation); (as sandstone J) 

Lower Pennsylvanian

Verne cyclical formation (including Verne limestone or shale 

member) a

Mississippian (see also Upper Devonian and Mississippian; and 

Upper Devonian and Lower 

JMLirSsi/ssip'pian)

Bayport limestone l

Coldwater shale 2

Forestville shale l

Grand Rapids group *

fGrand Rapids limestone 1

Huron gritstone l

Manistee limestone * Marshall sandstone * or formation

Michigan formation l

Napoleon member (of Marshall 

sandstone); (as sandstone J)

Point aux Barques sandstone 1

Point aux Barques lighthouse 1 

(sandstone)

Point aux Gres limestone 1

Port Austin sandstone 1

Richmondville sandstone l

Rock Falls series l 

Lower Mississippian

Hardwood Point shales and flags 2

Huron City sandstones and 

shales 2

Lighthouse conglomerate 3 

Upper Devonian and Lower Mississippian

Antrim shale *

Ellsworth shale l

fHuron group 1 

Upper Devonian

tSt. Clair shale »

Squaw Bay limestone l 

Middle and Upper Devonian

Traverse formation l or group

United States Continued 

Michigan Continued

Middle and Upper(?) Devonian

Fetter Farm formation 1

Thunder Bay limestone 1 

Middle Devonian

Afton bed 2

Alpena limestone l

Amherstburg formation (as member of Detroit River dolomite1)

Beebe School formation 3

Bell shale *

Black Lake lagunal facies 3

Bois Blanc formation 3

Charlevoix stage l

Detroit River group (as dolomite l)

Dock Street clays *

Dundee limestone 1 or formation

Flat Rock dolomite member (of 

Lucas formation); (as member 

of Detroit River dolomite ')

Four Mile Dam formation 2

Ferron Point formation l

Filer sandstone lentil (in Amherstburg formation) * (subsurface)

Genshaw formation *

Grand Lake member 1 (of Presque Isle series)

Gravel Point stage l

Gorbut member (of Gravel Point 

formation) 2

Eillians member (of Genshaw 

formation); (as limestone ')

Koehler limestone 3

Little Traverse Bay limestone 1

Long Lake series '

Mackinac breccia (as limestone !); contains discrete 

blocks of rocks of Silurian to 

Middle Devonian ages

Mackinaw limestone 1

Marvin Quarry bed 2

Newton Creek limestone 2

Norway Point formation *

Norwood shale 3

Partridge Point formation l

Petoskey limestone l

Presque Isle series l

Richfield member (of Lucas 

formation) a (subsurface)

Rockport limestone 1

Rockpert Quarry limestone 3

Rogers City limestone or formation 2

Saginaw sand 1 (subsurface)

Thunder Bay series 1

Whitefish Bay member (of

Alpena limestone stage) s 

Lower Devonian

Garden Island formation 2 

Silurian and Lower Devonian

fMonroe beds, formation, or 

group *
486 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Michigan Continued 

Silurian

Manitoulin limestone l

Raber bed 2

Toll Pit beds 1 

Upper Silurian

Point aux Chenes formation 2

Raisin River dolomite member 

(of Bass Islands dolomite) 1

St. Ignace formation 2 

Middle Silurian

Burnt Bluff formation 1

Cordell member l (of Manistique 

formation)

Engadine dolomite 1

Fiborn limestone 1

Hendricks series 1

Manistique series 1

Schoolcraft member ' (of Manistique formation) 

Upper Ordovidan

Bay de Noc member (of Stonington beds) 1

Big Hill beds 1

Bills Creek beds 1

Ogontz member (of Stonington 

beds) »

Stonington beds 1 

Middle Ordovidan

Bony Falls member (of Black 

River formation) 2

Chandler Falls member (of Trenton formation) 2

Escanaba limestone 1

Escanaba River group 2

Haymeadow Creek member (of 

Trenton formation) 2

Groos Quarry member (of Trenton formation) 2

Sheridan formation l 

Upper Cambrian and Lower 

Ordovidan

Hermansville limestone 1 

Upper Cambrian

fEastern sandstone 1

Lake Superior sandstone 1

Munising sandstone *

Ste. Marie sandstone 1

St. Marys sandstone 1 

Precambrian or Cambrian

Jacobsyille sandstone l 

Precambrian

Ajibik quartzite l

Albany conglomerate 1

Albany and Boston amygdaloid 1

fAlbany and Boston conglomerate 1

Albany and Boston flow 1

Algomah amygdaloid 1

Algomah flow 1

Allouez conglomerate 1

Amasa formation 2

tAntoine dolomite l

Anvil ferruginous chert member 

(of Ironwood iron-formation) 1

United States Continued 

Michigan Continued 

Precambrian Continued 

Arcadian amygdaloid 1 

Arcadian flow 1 

Arnold amygdaloid 1 

Arnold flow 1 

Ashbed amygdaloid ] 

Ashbed flow 1 

Ashbed group 1 

Atlantic amygdaloid 1 

Atlantic flow l 

Baltic amygdaloid 1 

Baltic conglomerate 1 

Baltic flow » 

Baltic sandstone l 

Baltic West amygdaloid 1 

Baltic West flow l 

Bessemer sandstone or quartzite 2 

Bijiki iron-formation member

(of Michigamme slate) 1 

Bohemia conglomerate ' 

Bohemia porphyrite 1 

Bohemian Range group 1 

fBone Lake crystalline schist 1 

fBoston conglomerate 1 

Brier slate member (of Vulcan

iron-formation) 1 

Brule schists and volcanics 1 

Butler amygdaloid l 

Butler flow *

Caledonia conglomerate l 

Calico amygdaloid l 

Calico flow 1 

Calumet amygdaloid 1 

fCalumet conglomerate 1 

Calumet flow 1

Calumet and Hecla conglomerate 1

f Cascade formation 1 

f Central group 1 

f Central Mine conglomerate 1 

Central Mine group l 

Central Valley beds 1 

fChippewa felsite 1 

fChippewa porphyry 1 

Clarksburg volcanics 1 member

(of Michigamme slate) 

Copper City flow (in Portage

Lake lava series) 2 

Copper Harbor conglomerate (as

group ») 

Copps group l 

Corning Creek zone (in Negaunee

formation) 1

Crystal Falls formation 1 

f Crystal Falls series l 

Curry iron-bearing member (of

Vulcan iron-formation) 1 

fDeer Lake conglomerates * 

Douglas amygdaloid 1 

Douglas flow l 

Eagle River group 1 

Evergreen amygdaloid 1 

Evergreen flow 1 

Felch formation (as schist !)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 487

United States Continued 

Michigan Continued 

Precambrian Continued

fFelch Mountain iron-bearing 

series 1

Fern Creek formation 2

Ford River granite 2

Forest amygdaloid 1

Forest conglomerate l

Forest flow >

Freda sandstone 1

fGogebic series 1

Goodrich quartzite 1

Goose Lake slate 1

t Grand Portage amygdaloid 1

fGrand Portage flow 1

Gratiot flow (in Portage Lake 

lava series) 2

fGraveland formation l

Great conglomerate l

fGreat Copper Harbor conglomerate 1

Greenstone flow 1

Greenwood iron-formation l 

member (of Michigamme slate)

Gwinn series 1

fHanbury slate 1

Hancock amygdaloid 1

Hancock conglomerate l

Hancock flow 1

Hancock West conglomerate 1

Hemlock formation (as greenstone *)

Holyoke conglomerate 1

Holyoke formation 1

Houghton conglomerate 1

Huginnin porphyrite 1

Iron River iron-formation member (of Michigamme slate) 1

Ironwood iron-formation 1

Iroquois flow (in Portage Lake 

Lava series) 2

flshpeming formation 1

Island Mine conglomerate 1

Isle Royale amygdaloid 1

Isle Royale flow 1

Isle Royale trap 1

Jasper Knob zone (in Negaunee 

formation) 1

fJohnson Creek conglomerate 1

Kearsarge amygdaloid 1

Eearsarge conglomerate 1

Kearsarge flow 1

Kearsarge trap 1

Kearsarge West amygdaloid 1

Kearsarge West flow 1

Keweenawan series 1

Kingston conglomerate 1

Kitchi schist 1

Knowlton amygdaloid 1

Knowlton flow 1

Kona dolomite 1

Lac La Belle conglomerate 1

Lake amygdaloid 1

Lake flow l

Lake Enchantment sediments 2

United States Continued 

Michigan Continued 

Precambrian Continued

Lake H anbury slate group 1

Lake Shore trap 1

fLake Superior group l

Loretto slate l member (of Vulcan iron-formation)

Mabb amygdaloid 1

Mabb flow l

Makasin Hill zone (in Negaunee 

formation) 1

Mandan amygdaloid 1

Mandan flow 1

Manitou amygdaloid 1

Manitou flow 1

Mansfield iron-bearing slate 

member (of Hemlock formation) ; (as formation or slate ')

fMareniscan series 1

Marquettan series 1

fMarquette series 1

Mass amygdaloid 1

Mass flow 1

Mayflower amygdaloids 1

Mayflower flows 1

Medora amygdaloids 1

Medora flow l

Menominee group (as series J)

Merchants amygdaloid 1

Merchants flow 1

fMesnard epidote 1

fMesnard formation l

Mesnard quartzite l

Michigan conglomerate 1

Michigamme slate l

f Michigamme jasper 1

Minesota conglomerate 1

Minesota trap 1

Minong breccia 1

Minong porphyrite 1

Minong trap l

Mona schist l

Montreal amygdaloid 1

Montreal flow 1

t Mount Bohemia conglomerate l

Mount Houghton felsite 1 or 

quartz porphyry 1

Mount Mesnard quartzite l

National sandstone 1

fNebraska conglomerate l

Negaunee iron-formation l

New Arcadian amygdaloid 1

New Arcadian flow 1

New Mass amygdaloid 1

New Mass flow 1

New Mayflower amygdaloid 1

Nonesuch shale 1

Norrie ferruginous chert member 

(of Ironwood iron-formation) l

North amygdaloid 1

North flow 1

North Butler amygdaloid 1

North Butler flow 1

North Lake zone (in Negaunee 

formation) x
488 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Michigan Continued 

Precambrian Continued

North Star conglomerate '

Norway limestone 1

Norwich conglomerate l

Norwich trap 1

Ogima amygdaloid 1

Ogima flow 1

Ohio Trap Rock traps 1

Old Colony amygdaloid 1

Old Colony flow 1

Old Colony sandstone l

Old Pewabic amygdaloid 1

Old Pewabic flow » Oneco amygdaloid 1

Oneco flow 1

fOneida conglomerate 1

Osceola amygdaloid '

Osceola flow '

Outer conglomerate l

Pabst member (of Tyler slate) 1

Paint slate 1

Paint River greenstones 2

Palmer gneiss 1

Palms quartzite 1

Pentoga greenstones 8

Pewabic amygdaloid 1

Pewabic flow 1

Pewabic West conglomerate 1

t Phoenix Mine group *

Portage Lake lava series 2

Praysville porphyry l

Presque Isle granite l

Princeton series 1

Quincy amygdaloid 1

Quincy flow 1

Quincy Pewabic amygdaloid 1

Quincy Pewabic flow l

Quinnesec formation (as greenstone J)

Quinnesec ore-formation * Randville dolomite 1

t Republic formation 1

Republic granite '

Republic quartzite 1

fRockland sandstone 1

fSt. Louis amygdaloid 1

St. Louis conglomerate l

fSt. Louis flow »

fSt. Marys epidote 1

Saunders formation 1

Scales Creek flow (in Portage 

Lake lava series) 2

Shawmut amygdaloid 1

Shawmut conglomerate 1

Shawmut flow 1

Siamo slate 1

South Butler amygdaloid 1

South Butler flow 1

South Pewabic amygdaloid 1

South Pewabic flow 1

fState Road conglomerate 1

Sturgeon quartzite 1

Superior amygdaloid *

United States Continued 

Michigan Continued 

Precambrian Continued

Superior flow 1

Superior West amygdaloid 1

Superior West flow 1

Toltec trap 1

Tomahawk amygdaloid l

Torch Lake amygdaloid 1

Torch Lake flow 1

Traders iron-bearing member (of 

Vulcan iron-formation) 1

Tyler slate 1

fVictoria amygdaloid 1

{Victoria flow 1

Vulcan iron-formation 1

West Minesota conglomerate l

West Minesota trap 1

Wewe slate * Winona amygdaloid 1

Winona conglomerate 1

Winona flow J

Wolf Lake granite l

Wolf Lake schist l

Wolverine amygdaloid l

Wolverine sandstone l

Wyandot amygdaloidj1

Wyandot flow 1

Wyandot No. 8 amygdaloid 1

Wyandot No. 8 flow 1

Yale member (of Ironwood ironformation) l 

Age(f)

Commonwealth ore formation 

Huron Bay slates *

L'Anse series l 

Minnesota 

Pleistocene

Itascan till l

Lake Agassiz clay l

Lake Agassiz silt 1

Mankato drift (see Mankato substage !)

Paulian till»

West Union gravel a 

Upper Cretaceous

Big Cottonwood formation 1

Coleraine shale or formation 2 

Lower Cretaceous

Ostrander member (of Dakota

formation) 2 

Ordovician

Minnesotan series 1

fShakopee group 1 

Upper Ordovician

Wykoff beds * 

Middle Ordovician

Carimona member (of Platteville 

formation) 2

Cummingsville member (of 

Galena formation) 2

Minneapolis limestone 1

Prosser member (of Galena dolomite) ; (as limestone J)

St. Peter sandstone l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 489

United States-^Continued 

Minnesota Continued

Middle Ordovician Continued

Stewartville massive member 

(of Galena dolomite); (as dolomite *) 

Lower Ordovician

Blue Earth siltstone l

fElevator B sandstone 1 (subsurface)

Kasota sandstone 1

Root Valley sandstone 2

Shakopee dolomite * 

Cambrian

Lansingan series 2 

Cambrian(f)

New Ulm conglomerate * 

Upper Cambrian

Bad Axe member (of Franconia 

sandstone) 1

Dresbach sandstone1

f Dresbach shale 1

Franconia sandstone 1

Galesville member l (of Dresbach 

formation)

Jordan sandstone *; sandstone 

member (of Trempealeau formation) in Michigan.

Judson member (of St. Lawrence 

formation) 2

Mill Street conglomerate (in 

Woodhill member of Franconia 

f ormation) 2

Minneiska member (of Franconia 

formation) 2

Nicollet Creek member (of St. 

Lawrence formation) 2

Reno member (of Franconia formation) 2

fSt. Croix formation 1

St. Croixan series l

fSt. Lawrence limestone or dolomite member* (of Trempealeau 

formation)

St. Lawrence member (of Trempealeau formation); (as formation i)

Taylors Falls member (of Franconia formation) 2

Van Oser member (of Jordan

sandstone) 2 

Precambrian

Agamok sediments 2

Agate Bay group 1

Aitkin formation 1

Amoeba Lake graywackes, slates, 

and tuffs 2

 Bassimenan Lake granite 1

 Basswood granite 1 

"Beaver Bay diabase 1 

liiwabik iron-formation ' 

Burntside granite gneiss * 

Cabotian * (lavas, red rock, and

gabbro)

Carltonian formation l 

Carlton slate 2

United States Continued 

Minnesota Continued 

Precambrian Continued

Chengwatana series *

fCoutchiching series 1

fClouquet slate *

fCourtland quartzite *

Crooked Lake granite pebble 

conglomerate 2

Crow Wing formation *

Crystal gray quartz monzonite 2

Cuyuna member (of Crow Wing 

formation) 1

fCuyuna series * Dam Lake quartzite * Deerwood iron-formation member (of Virginia slate) l

Dike Lake slate 2

Disappointment Mountain conglomerate 2

Duluth gabbro l

fDuluth group 1

Embarrass granite l

Ely greenstone l

Emily member (of Crow Wing 

formation) 1

Ensign Lake green slates, tuffs, 

and graywackes 2

Ensign-Snowbank Lake agglomerate 2

Ester Lake graywackes, slates, 

and tuffs 2

Fond du Lac sandstone *

Freedhem tonalite 2

Giants Range granite 1

Grand Portage graywacke * Grant conglomerate l

Gunflint iron-formation l

Hillman gneissoid tonalite 2

Hinckley sandstone 1

Hunters Island iron-bearing 

series 1

Jasper conglomerate 1

Jasper Lake greenstone conglomerate or agglomerate 2

fKawishiwin agglomerate, greenstones, or series 1

Eeewatin series 1

Kekekabic granite * Kekekabic tuffs, agglomerates, 

slates, and andesite porphyry *

fKettle River sandstone 1

Keweenaw Point volcanic series 2

Knife Lake group (as series ')

fKnife Lake slate l

Koochiching granite *

Lester River group * McGrath gneiss 2

Manitou series 1

"Marquettian system 1

"Mesabi gabbro 1

"Mesabi series *

"Mississippi slate series * Moose Lake conglomerate 2

Morton granite gneiss 2

fNew Ulm quartzite 1
490 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Minnesota Continued 

Precambrian Continued

Ogishke conglomerate (as member of Knife Lake slate *)

t Palisade porphyry *

Peebles granite f acies (of Ogishke 

conglomerate) 2

Pewabic quartzite 1

fPipestone quartzite *

Pokegama quartzite 1

Prairie River granite 1

Puckwunge conglomerate l

fPuckwunge slate l

Red Rock member l (of Keweenawan series)

fRedstone quartzite 1

Saddlebag Lake conglomerate 2

Saganaga granite 1

Saganaga syenite *

St. Cloud gray granodiorite 2

St. Cloud red granite 2

fSt. Louis River gabbro 1

fSt. Louis River slate 1

Snowbank granite l

Soudan iron-formation 1

South Range member (of Virginia formation) 2

Stearns magma series 2

Stuntz conglomerate (as member 

of Knife Lake slate J)

fStuntz Island agglomerate 1

Temperance River group 1

Temperance River member * (of 

Keweenawan series)

tThomson slate l

fTower group 1

Townline Lake granodiorite 2

Vermilion granite 1

t Vermilion group, schists, series *

fVermilion Lake iron-bearing 

series l

Virginia slate 1

Warman quartz monzonite 2

Wauswaugoning quartzite 1

West Gull jasper f acies (of 

Ogishke conglomerate) 2

t White Iron granite 1

Zeta Lake granite porphyry 

facies (of Ogishke conglomerate) 2

Mississippi 

Recent (?)

Vicksburg fossiliferous loam 1 

Pleistocene

Biloxi sand *

Natchez formation ' 

Pliocene

Graham Ferry formation 2 

Miocene

fDavion rock 1

Fort Adams member (of Pascagoula clay); (as Fort Adams or 

Ellisville phase 1 ; see also G. F. 

Brown, 1943, Mississippi Geol. 

Survey Bull. 56, p. 47-48)

United States Continued 

M ississippi C ontinued 

Miocene Continued 

fGrand Gulf sandstone * 

Homochitto member (of Pascagoula formation) 2 

Knoxville member (of Pascagoula formation) 2 

t Mississippi clays l 

Pascagoula clay 1 

Miocene(f)

t Bayou Pierre phase * 

Catahoula sandstone 1 formation

or tuflF 

Miocene, lower and middle

Hattiesburg clay 1 

Miocene and Oligocene(f)

t Grand Gulf group l 

Oligocene and Miocene(f)

Catahoula group l 

Oligocene

Limestone Creek beds l 

Limestone Creek group * 

Oligocene, upper

Chickasaway limestone (as marl

member of Byram marl J) 

Oligocene, middle 

Bucatunna clay member (of Byram formation) l 

Byram formation (as marl >) 

Hennessey Bayou member (of

Bucatunna marl and clay) 2 

Mint Spring marl member (of

Marianna limestone) 2 

Vicksburg group l or formation 

Oligocene, lower 

Forest Hill sand l 

fMadison sand * 

Red Bluff clay l 

Eocene

fChickasaw formation or group * 

Eocene, upper

Jackson formation 1 or group 

Moodys Branch marl 1 or formation

Yazoo clay (as member of Jackson formation J) 

Eocene, middle

Archusa shale member (of Cook

Mountain formation) 2 

fBasic claystone 1 

Basic City shale member (of Tallahatta formation) 2 

fDecatur sand 1 

{Enterprise green marl 1 

Gordon Creek shale member (of

Cook Mountain formation) 2 

f Grenada formation l 

Holly Springs sand 1 member (of

Tallahatta formation) 

fKosciusko sandstone member (of

Lisbon formation) 1 

fMeridian formation * 

Meridian sand member (of Tallahatta formation) 8
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 491

United States Continued 

Mississippi Continued 

Eocene, middle Continued 

Neshoba sand member (of Tallahatta formation) 2 

Potterchitto sand member (of

Cook Mountain formation) 2 

Shipps Creek shale member (of

Wautubbee formation) 2 

Shongalo greensand 1 

t Wautubbee marl 1 

Winona sand (as member of Lisbon formation l) 

Zilpha clay 2 

Eocene, lower

fAckerman formation 1

Fearn Springs sand member (of

Wilcox formation) 2 

fFlatwoods clay 1 

Noxubee sand 2 

Paleocene or Eocene

fBetheden formation 2 

Paleocene

fChalybeate limestone member

(of Porters Creek formation) 

Tippah sand lentil (of Porters

Creek clay) 1 

Cretaceous, Tertiary, and Pleistocene

t Lafayette formation 1 

Upper Cretaceous 

t Coulters Ferry sands 1 

Houston marl l 

Mooreville chalk (as tongue of

Selma chalk J) 

fOktibbeha tongue (of Selma

chalk) 1

Owl Creek formation l 

Prairie Rock limestone l 

Ripley formation l 

Ripleyan series 1 

Tombigbee sand member (of

Eutaw formation) 1 

Tupelo tongue (of Coffee sand) 1 

Lower Cretaceous 

Dantzler formation 2 (subsurface) 

Little Bear formation or residuum 2

. Cripple Deer sandstone member

(of Alsobrook formation) 1 

Forest Grove formation l 

Hargett sandstone l 

Highland Church sandstone

member (of Forest Grove formation) 1 

Pond limestone l 

Southward Spring sandstone l

member (of Pride Mountain

formation) 

Lower Mississippian 

Carmack limestone 1 

luka formation l

Devonian and Lower Mississippian 

t Yellow Creek beds »

United States Continued 

M ississippi Continued 

Upper Devonian

Whetstone Branch shale l 

Lower Devonian

Island Hill formation r 

Missouri 

Pleistocene

Bagnell till i 

Pleistocene (?)

Asherville alluvium 2 

Tertiary

Benton sand 1

Commerce sandstone 1

Crowleyan series l

Idalia clay 1

Piketon gravel l

Poinsettan series l 

Pliocene

Winoka gravel l 

Miocene (f)

Grover gravel 2 

Eocene

Bloomfield sand l 

Upper Cretaceous

Egypt sand l

Zadoc member (of McNairy

formation) 2 

Pennsylvanian

fAtchinson shale i

Baden sandstone l

fBull ledge l

Graydon channel sandstone 1

Graydon shales 1

Hardesty shale l

fHolden group *

f Knob Noster group l

Moberly channel sandstone l

f Mound group l

Rockport shales l

Saline Creek cave conglomerate l

Sonora shale 1

Spring River sandstone r

Walker conglomerate and sandstone l

Warrensburg channel sandstone 1

Eureka fire clay l 

Granby conglomerate l 

Pennsylvanian (Virgil) 

Amazonia limestone member (of

Lawrence shale) l

fAndrew shale (in Douglas formation) l

City Bluffs shale (in Shawnee 

formation) l

Curzon limestone (in Shawnee 

formation) *

fForbes limestone (in Shawnee 

formation) 1

Forest City limestone (in Shawnee formation) 1

Forest City sand rock (in Shawnee formation) l
492 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Missouri Continued

Pennsylvanian (Virgil) Continued

Heumader shale member (of 

Oread limestone) 1

Holt shale member (of Topeka 

limestone) 1

Langdon shale 3

Nodaway limestone (in Shawnee 

formation) 1

fQuitman limestone 1

fSt. Joe limestone (in Shawnee 

formation) 1

fWaldron sandstone (in Douglas

formation) 1 

Pennsylvanian (Missouri)

Belton sandstone member (of 

Chanute formation) 2

Bethany Falls limestone 1

Cement City limestone bed (in 

Chanute shale member of 

Kansas City formation) 1

Parley limestone bed (in Lansing ? formation) 1

latan limestone !; fmember (ol 

Douglas formation) l

Kansas City formation 1 ; group 

in Kansas

fKansas City limestone 1

fKansas City oolite 1

Knobtown sand l

Liberty Memorial shale member 

(of Chanute formation) 2

Missouri series (as group J)

fParkville limestone (in Kansas 

City formation) 1

fParkville shale 1

Plaits burg limestone 1 ; fmember 

(of Lansing formation) 1

Raytown limestone bed (in Kansas City formation) 1 ; limestone in Kansas

Sniabar limestone 1

Sugar Creek shale (in Bethany 

Falls limestone) 1

Swppe limestone l or formation 1

Union Station shale member (of 

Chanute formation) 2

Weston limestone 1

Weston shale l; fmember (of

Douglas formation) 1 

Pennsylvanian (Des Moines)

Amoret limestone member (of 

Altamont formation) 2

Ardmore limestone member (of 

Cherokee shale) 1

Bevier cyclothem or formation 

(including Bevier clay) 2

Bevier fire clay 1

Blackjack Creek cyclothem (including Blackjack Creek limestone) 2

Blackwater Creek shale member 

(of Fort Scott formation) 2

t Cheltenham fire clay 1 (formation)

United States Continued 

Missouri Continued

Pennsylvanian (Des Moines) Con.

fClear Creek sandstone (in 

Cherokee shale) l

fClear Fork group 1

Dederick shale member 1 (of 

Cherokee formation)

Drywood Formation or coal cycle 3

Excello formation 3

Flint Hill sandstone member 

(of Fort Scott formation) 3

fHenrietta formation or group 1

Higginsville cyclothem (including Higginsville limestone) 2

Houx cyclothem (including Houx 

limestone)3

Lagonda sandstone member (of 

Cherokee shale) 1

fLexington group l

Loutre formation 3

Macon City shale 1

Miller fire clay 1

Myrick Station cyclothem (including Myrick Station limestone) 2

Republic chert 1

Rich Hill limestone member 

(of Cherokee shale) 1

Robinson Branch formation or 

coal cycle 2

Summit limestone (in Cherokee 

shale) 1

Tebo formation 2

Thomas Hill fire clay 1

Thomas Hill shale 1

Tina cyclothem (including Tina 

limestone) 2

fWarrensburg group 1

Worland limestone 1

fSte. Genevieve group 

fSeneca chert 1

Aux Vases sandstone 1 

Carterville formation 1 

Carthage limestone 1 

fGabouri limestone l 

fGenevieve group 1 

Meramec series (as group J) 

Ste. Genevieve limestone 1

S

Ste. Genevieve marble 1 

Ste. Genevieve sandstone 1 

St. Louis group 1 

St. Louis limestone 1 

Lower Mississippian 

Bushberg sandstone member (of

Sulphur Springs formation) 1 

f Chouteau group 1 

Chouteau limestone 1 

Compton limestone 1 

Easley group 2 

Fern Glen limestone 1 

Glen Park limestone member 

(of Sulphur Springs formation) ; formation 1 in Illinois
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 493

United States Continued 

Missouri Continued

Lower Mississippian Continued

Grand Falls chert member (of 

Boone limestone) * Hannibal shale *

Louisiana limestone 1

Northview shale 1

Osage series (as group l)

tOzark group 1

Pierson limestone l

Reeds Spring limestone * member (of Boone formation)

Saverton shale 1

Sedalia limestone 1

Sulphur Springs formation 1 

Devonian or Mississippian

Fabius group 2 

Devonian

Ashland limestone 2

Auxvasse Creek sandstone member (of Callaway limestone) 1

Fortune formation 2

Kings limestone 1

Webster group l 

Devonian(f)

James River shale l

fPhelps sandstone 1 

Upper Devonian or Mississippian

Grassy Creek shale 1 

Upper Devonian

fCraghead Creek shale 1

Snyder Creek shale 1 

Middle Devonian

Beauvais sandstone 1

Callaway limestone 1

Cooper limestone 1

Mineola limestone 1

St. Laurent limestone 1

Wittenberg shale 1 

Lower Devonian

Bailey limestone 1

Little Saline limestone 1 

Silurian and Devonian

fPerry limestone 1 

Middle Silurian

Bainbridge limestone 1

Moccasin Springs formation 2 

Lower Silurian

Bowling Green limestone member (of Edgewood limestone) 1

Edgewood limestone 1

Girardeau limestone 1

Hopkintonian series 2

Noix oolite member (of Edgewood limestone) 1

Watson limestone 1 

Ordovician

Rock Levee formation 2 

Upper Ordovician and Silurian

Buffalo shale l 

Upper Ordovician

f Cape Girardeau sandstone 1

Decaturville chert l

Spencer chert 1

United States Continued

Missouri Continued

Middle Ordovician

Auburn chert 1

Beckett limestone or formation 2

Bloomsdale formation 2

fBryant limestone 1

Charrette limestone l

fCape Girardeau marble l

Hager limestone or formation a

Hook limestone member (of 

Macy formation) 2

Joachim dolomite l

Kimmswick limestone 1

Macy limestone or formation 2

McCune limestone 1

McPherson marble 1

Plattin limestone 1

Zell limestone member (of Macy

formation) 2 

Lower Ordovician

Blackjack Knob member (of 

Theodosia formation) 2

Bolin sandstone member (of 

Roubidoux formation) l

Bolivar sandstone 1

fCole Camp sandstone (in Van 

Buren formation) l

Crystal City sandstone l

Dutchtown formation 2

fFinley limestone l

fFolley limestone 1

Gainesville sandstone (in Blackjack Knob member of Theodosia formation)2

Gasconade dolomite l

Geiser Quarry member (of Dutchtown formation)2

Gunter sandstone member (of 

Van Buren formation) 1

Hercules Tower sandstone (in 

Lutie member of Theodosia 

formation) 2

Jefferson City dolomite l

tJefferson City group l

King limestone 1

Lutie member (of Theodosia 

formation) 2

Marsh field sandstone 1

Minnith zone (in Powell limestone) l

fMoreau sandstone 1

fOsage limestone 1

t Pacific sandstone 1

Rich Fountain formation 2

Rockaway conglomerate bed (in 

Lutie member of Theodosia 

formation) 2

fRock Fort sandstone 1

Roubidoux formation l or dolomite

Sac limestone l

fSt. Elizabeth formation J

fSt. Peter group 1

fSt. Thomas sandstone 1
494 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Missouri Continued

Lower Ordivician Continued

School Mine ledge beds (in Rich 

Fountain formation) 2

Theodosia formation 2

t White River limestone 1

fWinfield dolomite 1

Van Buren formation l 

Cambrian

Delassus formation 2

Tom Sauk limestone member (of

Bonneterre formation) 2 

Upper Cambrian and Lower Ordovician

tLesueur dolomite 1

fOzark series 1

fPotosi group 1

Upper Cambrian and Lower Ordovician(?)

fEangua limestone 1 

Upper Cambrian

Bonneterre dolomite 1

Davis formation 1

fDecaturville limestone 1

Derby dolomite 1

Doe Run dolomite 1

Elvins group 1

Eminence dolomite 1

fFredericktown dolomite 1

Iron Mountain conglomerate *

Laclede sandstone 1

Lamotte sandstone 1

fOzark marble 1

Pilot Knob conglomerate 1

Potosi dolomite 1

fPotosi slates and conglomerate 1

Proctor dolomite 1

fSt. Francois limestone 1

fSt. Joseph limestone 1 

Precambrian

Francoisian series 1

Graniteville granite 2

Iron Mountain porphyry 1

Ironton granite 2

Ironton slate 1

Knob Lick granite 1

Pilot Knob formation 1

Pilot Knob iron formation 1

Skrainka diabase 1

Silver Mine granite 2 

Age(?)

Kings Branch limestone 1 

Montana 

Recent

Galata ash 2 

Pleistocene

Great Falls lake sands 2

fKennedy gravels 1

Lake Missoula beds 1 

Pleistocene(?)

Wiota gravels 2 

Tertiary

Bozeman group (as lake beds) l

United States Continued 

Montana Continued 

Tertiary Continued

Carpenter Creek granite porphyry 1

Drummond 1 (clays)

Silver Dyke breccia 1 

Tertiary, upper, or Pleistocene

Clark Canyon lavas 2 

Tertiary, upper (?)

Belmont porphyry 1

Drumlummon porphyry * 

Probably upper Tertiary

Stanford conglomerate 1 

(?) Tertiary, lower

Snow Creek quartz porphyry 1 

Tertiary (Post-Eocene?)

Linley conglomerate 1 

Pliocene(?)

Fort Ellis beds» 

Miocene or Pliocene

Castle granite 1

fModoc porphyry 1

Robinson diorite 1 

Miocene, upper, or Pliocene

Flaxville formation (as gravel) 1

Madison Valley beds 1 

Miocene, middle

Deep River beds 1

fSmith River lake beds 1 

(?) Miocene, middle

fFlint Creek beds l 

Miocene, lower

Blacktail Deer Creek basalts 2

Fort Logan beds 1 

Oligocene

Pipestone beds l 

Oligocene(?)

Muddy Creek beds 2 

Oligocene, upper, to Miocene, lower

Medicine Lodge voleanics 2 

(?) Oligocene, upper

fBlacktail Deer Creek beds 1 

Oligocene, middle

Cook Ranch formation 1

Cook Ranch rhyolites 2

Cook Ranch voleanics 2

Muddy Creek voleanics 2

fToston beds 1 

Oligocene, lower

fPipestone Creek beds '

fThompson Creek beds 1 

Eocene

Beaverhead granite 2

Black Butte till 2

fBluebird aplite 1

tBull Mountain series l

Crazy Mountain granite '

Loco diorite 1

Sagean series 1

Snowcrest granite 2

Sphinx conglomerate 1 

Eocene(?)

Butte quartz monzonite 1

Highwood syenite 1

Reese formation 1
INDEX TO THE GEOLOGIC NAMES OP NORTH AMERICA 495

United States Continued 

Montana Continued 

Eocene, upper

Sage Creek basalts 2 

Eocene, upper (?)

Sage Creek formation 1 

Paleocene

Bear [formation] 2

Lebo shale member and andesitic 

member (of Fort Union formation) l

Maudlow conglomerate lentil (in 

Livingston formation) 2

Melville formation 2

TuIIock member (of Fort Union 

formation); (as formation J)

Willow Creek formation l 

Post-Cretaceous

Barker porphyry 1

Wolf porphyry 1 

Post~Cretaceous(?)

Pinto diorite 1 

Cretaceous(?)

Neihart porphyry l 

Upper Cretaceous and Paleocene

fCrazy Mountain beds 1

Livingston formation 1 

Upper Cretaceous

Adel Mountain volcanics 2

Bearpaw shale 1

Beaverhead formation 2

Big Elk sandstone member (of 

Colorado shale) 1

Birdhead sandstone member (of 

Cloverly formation); (as member of Thermopolis shale J)

Blackleaf formation (as sandy 

member of Colorado shale *)

Bowdoin sand 1 (subsurface)

Bull Creek sandy limestone (in 

Greenhorn formation) 2

Claggett formation, 1 shale, or 

shale member (of Cody shale)

Colgate member (of Fox Hills 

sandstone) 1

Cow Island beds 1

Eagle sandstone 1

fFish Creek beds 1

Fly Creek limestone 1

Groat sandstone bed (in Pierre 

shale) 1

Hell Creek formation 1

Horsethief sandstone 1

fJudithian series 1

Judith River formation 1

Lennep sandstone 1

Martin sandy zone 1 (subsurface)

Montana group 1 or formation

t Montana series 1

Montanan series 1

Mosby sandstone member (of 

Colorado shale); (as member of 

Warm Creek shale *)

Sage Hen limestone member (of 

Colorado shale) 1

(in 

(in

or

United States Continued 

Montana Continued

Upper Cretaceous Continued 

Soap Creek bentonite bed

Frontier formation) 2 

Stoneville Flats limestone

Belle Fourche shale) 2 

Telegraph Creek formation 

member (of Cody shale) 

Tombstone sandstone 1 

Two Medicine formation l 

Virgelle sandstone or sandstone 

member (of Eagle sandstone) 1 

Warm Creek shale 1 

Whitlash sands 1 

Lower and Upper Cretaceous 

Benton shale 1 or formation 

Cat Creek sands * 

Lower and Upper Cretaceous and

fYellowstone formation * 

Lower Cretaceous

fCascade formation 1

Cosmos sand 1 (subsurface)

Cutbank sand l

Darling sand 1 (subsurface)

Douglass 1 (shales)

Farland 1 (limestone)

Gird * (shales)

f Great Falls coal series or group l

Lupton sand 1 (subsurface)

Moulton sand 1 (subsurface)

Olson 1 (limestone)

Pryor conglomerate member (of

Cloverly formation) 1 

Stewart sand 1 (subsurface) 

Sunburst sand 1 (subsurface) 

Warm 1 (formation) 

Wyman 1 (formation) 

Lower (?) Cretaceous

American Fork formation l 

Jurassic and Cretaceous 

fCrow Ridge series 1 

Jurassic

Picard shale member (of Nesson

formation) 2 (subsurface) 

Vernal 1 (shale) 

Upper Jurassic 

Emrick sand 1 (subsurface) 

Rierdon formation 2 

Swift formation 2 

Middle and Upper Jurassic 

Ellis formation 1 or group 

Middle Jurassic

Bowes member (of Piper formation) 2 (subsurface and surface) 

Firemoon limestone member (of

Piper formation) 2 (subsurface

and surface) 

Piper formation 2 

Sawtooth formation 2 

Tampico shale member (of Piper

formation) 2 (subsurface and

surface)

Permian and Triassic 

Bowler formation *
496 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Montana Continued 

Carboniferous

Melrose l (quartzite) 

Missoula l (limestone) 

Pennsylvanian (?)

Tyler sandstone member (of

Quadrant formation) 1 

Mississippian or Pennsylvanian

Alaska Bench limestone ! 

Mississippian to Pennsylvanian

Absaroka sequence 2 

Mississippian and (or) Pennsylvanian 

Big Snowy group 1 or formation

Charles formation 2 (subsurface)

Dean Lake Chert member 1 (of 

Madison limestone)

Hannan limestone 2

Monitor Mountain limestone member 1 (of Madison limestone)

Rooney chert member ' (of Madison limestone)

Saypo limestone member 1 (of 

Madison limestone)

Silvertip conglomerate member 1 

(of Madison limestone)

Van Duzen sand 1 (subsurface) 

Upper Mississippian

Heath formation 1

Eibbey sandstone (as member of 

Quadrant formation 1

Otter formation or shale (as 

member of Quadrant formation i)

Sun River dolomite 2

Yakinikak limestone 1 

Lower Mississippian

fCastle limestone member (of 

Madison limestone) 1

Little Chief Canyon member (of 

Lodgepole limestone) 2

Lodgepole limestone 1

Madison limestone, 1 formation, 

or group

Mission Canyon limestone 1

Paine shale member (of Madison 

limestone) 1

Trident J (formation)

Woodhurst limestone member

(of Madison limestone) 1 

Devonian

Ermont formation l 

Upper Devonian and Mississippian

Sappington sandstone member 

(of Three Forks shale) 2

Threeforks shale 1 , limestone 1 ,

or formation 

Upper Devonian

Jefferson limestone 1 , dolomite 1 , 

or formation; group in subsurface

Maywood formation l

United States Continued 

Montana Continued

Upper Devonian Continued 

Potlatch anhydrite 1 or member

(of Three forks formation)

(subsurface) 

Union shale l 

Middle and Upper Devonian

t Monarch formation 1 

Middle Devonian

Coopers Lake limestone member 1

(of Jefferson limestone) 

Glenn Creek shale member (of

Jefferson limestone) 1 

Lone Butte limestone member 1

(of Jefferson limestone) 

Spotted Bear limestone member 1

(of Jefferson limestone) 

White Ridge limestone member '

(of Jefferson limestone) 

Post-Cambrian

Bandbox Mountain type J (analcite basalt) 

Barker syenite 1 

Big Baldy Mountain type 1 (analcite basalt) 

Eureka Divide type 1 (analcite

basalt) 

Steamboat Mountain type (of

diorite porphyry) 1 

Wolf Butte type (of granite

porphyry) 1 

Yogo Peak type (of granite

porphyry) 1 

Cambrian 

Barkerian series 1 

Tilden formation 1 

Upper Cambrian and Middle Devonian

Keene limestone 1 

Upper Cambrian 

Cemetery limestone 1 

Devils Glen dolomite 1 

Dry Creek shale 1 

Elkhorn shale or hornstone l 

Gallatin limestone 1 or formation 

Grove Creek formation 2 

Hasmark formation 1 

Maurice formation 2 

Pilgrim limestone 1 or dolomite 

Red Lion formation 1 

 { Republic reef 

Sage pebble-conglomerate member

(of Snowy Range formation) 2 

Snowy Range formation 2 

Yogo limestone 1 

Middle and Upper Cambrian 

fBarker formation 1 

Gordon Mountain limestone ! 

Middle or Upper Cambrian

Switchback shale (as limestone l) 

Middle Cambrian 

Alpreston quartzite * 

Dearborn limestone 1 

Flathead quartzite 1 or sandstone
INDEX TO THE GEOLOGIC NAMES OP NORTH AMERICA 497

United States Continued 

Montana Continued

Middle Cambrian Continued

tFlathead formation or shales 1

Gordon shale 1

Hobo Gulch formation 1

Meagher limestone 1

Pagoda oolite 1

Park shale 1

Pentagon shale 1

Silver Hill formation l

Starmount limestone 1

Steamboat limestone 1

Wolsey shale 1 

Middle(f) Cambrian

Damnation limestone 1

Nannie Basin limestone l 

Precambrian

Altyn limestone 1

Appekunny argillite 1 or formation

Appistoki member (of Appekunny argillite) 1

Ahorn quartzite 2

Axes Creek phase (of Cherry 

Creek series) 2

Belt series 1

Bitterroot period l

Blackfoot formation 1

Blackfootian series 1

Black Point dolomite member (of 

Cherry Creek series) 2

Blacktail granite gneiss 2

Boulder Pass formation 1

Camp Creek group l

Cayuse limestone 2

Chamberlain shale 1

Cherric period 1

Cherry Creek group 1

Cooke granite 1

Dillon granite gneiss 2

Donaher sandstones 1

Donald quartzites 1

tEast Gallatin group 1

Empire shale 1

Gallatinian series l

Garnet Range formation 1 or 

quartzite

Gateway formation 1

Goathaunt member (of Siyeh 

limestone) 1

Goose Creek granite l

Granite Park member (of Siyeh 

limestone) 1

Greenhorn Mountain quartzite 2

Greyson shale l

Grinnel argillite 1

Hefty formation l

Helena limestone 1

Helenan series l

Hellgate quartzite member (of 

Miller Peak argillite); (as 

formation) 1

Hoadley formation 2

Hole-in-the-Wall member l (of 

Boulder Pass formation)

United States Continued 

Montana Continued 

Precambrian Continued

Eintla argillite l

Libby formation 2

f Lolo series l

McNamara formation 1 or argillite

Madisonic period 1

Marsh shale 1

Miller Peak formation l or argillite

Missoula group 1

Neihart quartzite l

Newland limestone 1 or formation

North Boulder group 2 or formation

Piegan group 2

Pony series 1

Prickly Pear member (of Spokane 

formation) 2

Ravalli group 1 or argillite

Ravallian series 1

Red Gap member (of Grinnell 

argillite) 1

Rising Bull member (of Grinnell 

argillite) 1

Rising Wolf member (of Appekunny argillite) 1

Rogersian series 1

Ruby limestone and gneiss *

Scenic Point member (of Appekunny formation) 2

Sheep Mountain quartzite 1

Shepard formation 1

Singleshot member (of Appekunny argillite) '

Siyeh limestone 1

Spokane shale 1 or formation 1

Stillwater complex l

Turnley hornstone or shale 1 

Nebraska

Pleistocene and Recent

Bignell loess 2

f Plains series l

Sand Hills formation l 

Pleistocene

fPlatte series 1

fSheridan beds l 

Pleistocene (Wisconsin)

Brady soil 2

Todd Valley sand (as formation J) 

Pleistocene (Illinoiari)

Crete formation 2 

Pleistocene (Yarmouth)

Sappa formation 2

f Upland formation l 

Pleistocene (Kansan)

Grand Island formation 1

Red Cloud sand and gravel 2 

Pleistocene (Aftonian)

Fuller ton formation 1 

Pleistocene (Nebraskan)

David City formation 1

Holdrege formation l

Nebraskan drift 1
498 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued

N ebraska C ontinued

Pleistocene, lower

Broadwater formation 2

Lisco member (of Broadwater

formation) 2 

Tertiary, middle 

Loupian 1 (series) 

Whitian series 1 

Pliocene

Ash Hollow formation 2

Feldt Ranch beds (in Ash Hollow

formation) 2 

Kimball formation 2 

Minnechaduza beds (in Ash

Hollow formation) 2 

Ogallala formation 1 

Seward formation 2 

Sidney gravel 2 

Snake River stage 1 

Pliocene(f)

Devils Gulch beds 1 

Valentine beds 1 

Pliocene, lower

f Republican River formation l 

Miocene, Pliocene, and Pleistocene(?)

fLoup Fork beds or group * 

Miocene, Pliocene, and later(?)

fNiobrara group 1 

Miocene to Pliocene

Niobrara River channel sands

(in Valentine formation) 2 

Miocene

Arikaree group (as sandstone J); 

formation in Colorado and 

Wyoming; formation or sandstone in South Dakota 

Box Butte member (of Sheep

Creek formation) 2 

Gering sandstone (as formation1 ) 

Hemingford group 2 

Marsland formation 2 

tN ebraska beds 1 

Sand Canyon member (of Sheep

Creek formation) 2 

fScotts Bluff formation 1 

Sheep Creek formation (as beds]) 

Spottedtail member (of Sheep

Creek formation) 2 

Miocene, upper, or Pliocene, lower 

Burge sands member (of Ogallala

formation) 1

tFort Niobrara formation 1 

Snake Creek beds 1 

Miocene, lower

Harrison sandstone (as beds !) Monroe Creek beds 1 

Oligocene

Orella member (of Brule formation) 2

Whitney member (of Brule formation) 2

Oligocene, upper, to Miocene 

Bayard paleosol complex 2 

Oligocene, lower

Chadron formation 1

United States Continued 

Nebraska Continued 

Cretaceous

fOmadi sandstone 2 

Upper Cretaceous or Eocene

Platte River formation 1 

Upper Cretaceous

Ainsworth formation 1

Dakota sandstone 1 , formation, 

group or quartzite

Dakotan series 1

fDixons group l

Niobrara formation l, chalk, or 

shale; member (of Mancos 

shale in New Mexico; of Cody 

shale in Montana)

Ponca sandstone 1 

Permian

Aspinwall limestone member (of 

Onaga shale); (as limestone or 

shale in Admire shale *)

Barneston limestone (as formation »)

Bennett shale 1 member (of Red 

Eagle limestone)

Burr limestone member l (of 

Grenola limestone)

Eiss limestone 1 member (of 

Bader limestone)

Falls City limestone l

Five Point limestone member 

(of Janesville shale); (as limestone in Admire shale *)

Fourmile limestone (in Wreford 

limestone) 1

Glenrock limestone l member 

(of Red Eagle limestone)

Hamlin shale 1 member (of Janesville shale)

Hawxby shale 1 member (of 

Onaga shale)

Holmesville shale l member (of 

Doyle shale)

Houchen Creek limestone 1 bed 

(in Hamlin member of Janesville shale)

Howe limestone 1 member (of 

Red Eagle limestone)

Hughes Creek shale 1 member 

(of Foraker limestone)

Indian Cave channel sandstone 

bed (in Towle member of 

Onaga shale); (as sandstone ')

Johnson shale 1

Einney limestone 1 member (of 

Matfield shale)

Erider limestone l member (of 

Nolans limestone)

Long Creek limestone l member 

(of Foraker limestone)

Middleburg limestone 1 member 

(of Bader limestone)

Oaks shale 1 bed (in Hamlin 

member of Janesville shale)

Odell shale 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 499

(of

United States Continued 

Nebraska Continued 

Permian Continued 

Paddock shale 1 member

Nolans limestone) 

Roca shale l 

Salem Point shale member 1 (of

Grenola limestone) 

Speiser shale 1

Stine shale 1 bed (in Hamlin 

shale member of Janesville

West Branch shale l member

(of Janesville shale) 

Wymore shale 1 member (of

Matfield shale) 

Pennsylvanian

Ashland limestone 1

Cedar Creek limestone 1

Cullom limestone 1

Fargo limestone 1

Lehmer limestone member (in

Admire shale) 1 

Louisville limestone 1 

Meadow limestone 1 

Miles limestone member J (of

Falls City formation) 

Nehawka limestone 1 

Oreapolis limestone 1 

Preston limestone 1 

Union limestone 1 

Pennsylvanian (Virgil)

Avpca limestone (in Lecompton

limestone) 1 

Beil limestone (in Lecompton

limestone) l 

Brownville limestone l member

(of Wood Siding formation) 

Cass limestone 1 

Church limestone 1 member (of

Howard limestone) 

Ervine Creek limestone (in Deer

Creek limestone) 1 

Heebner shale 1 member (of

Oread limestone) 

Jones Point shale (in Calhoun

shale) l 

Kenosha shale (in Tecumseh

shale) 1 

King Hill shale (in Lecompton

limestone) 1

Larsh shale (in Deer Creek limestone) 1 

Little Pawnee shale member (of

Cass formation) 2 

Minersville shale member (of

Friedrich formation) 2 

Morton shale 2

Nebraska City limestone 1 member (of Wood Siding formation) 

Nemaha formation, member, or

subgroup 1 

Ost limestone (in Tecumseh

shale) 1

United States Continued 

Nebraska Continued

Pennsylvanian (Virgil) Continued 

Otoe shale member (of Friedrich

formation) 2 

Palmyra limestone member (of

Friedrich formation) 2 

Pierson Point shale 1 

Plattford shale (in Scranton shale) 1 

Plattsmouth limestone 1 member

(of Oread limestone) 

Pony Creek shale 1 member (of

Wood Siding formation) 

Queen Hill shale (in Lecompton

limestone) 1 

Rakes Creek shale (in Tecumseh

shale) 1

Richardson subgroup 1 

Rock Bluff limestone (in Deer

Creek limestone) 1 

Rulo limestone 1 member (of

Scranton shale) 

Sheldon limestone (in Calhoun

shale) 1

Shoemaker limestone 1 

Snyderville shale 1 member (of

Oread limestone) 

South Fork limestone 1 

Sturm, limestone (in Lawrence

shale) 1

Table Creek shale l 

Taylor Branch limestone 1 

Turner Creek shale (in Topeka

limestone) 1 

Weeping Water limestone (in

Oread limestone) 1 

Winnebago shale * 

Wood Siding formation 2 

Pennsylvanian (Missouri)

Dyson Hollow limestone zone or

member (of Stoner member of

Stanton formation) 2 

Kiewitz shale (in Stanton limestone) J

P. W. A. Quarry limestone member (of Drum formation) 2 

Richfield Quarry shale member

(of Drum formation) 2 

Rock Lake shale 1 member (of

Stanton limestone) 

Sarpy formation 2 

South Bend limestone l member

(of Stanton limestone) 

Stoner limestone 1 member (of

Stanton limestone) 

Mississippian

Boice shale 2 (subsurface) 

Nevada 

Quaternary

American Flat basalt 2 

Carsonian series 1 

Pleistocene (see also Pliocene, upper,

or Pleistocene) 

Lake Lahontan beds 1

504835 58
500 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Nevada C ontinued

Tertiary (see also Precambrian or 

Tertiary)

Chipsa andesite 1

Elko Prince rhyolite 1

Extension breccia 1

Grapevine conglomerates 1

June Bell rhyolite * Eendall tuffs 1

Kyle sandstone l

Mammoth andesite 1

Meda rhyolite 1

t Midway andesite 1

Milltown andesite l

Mizpah trachyte 1

f Montana breccia 1

Morena rhyolite 1

Sandgrass andesite 1

Sandstorm rhyolite 1

Tonopah formation 1

Victor andesite 1

Vindicator rhyolite 1

West End rhyolite 1

Wonder rhyolite 1 

Tertiary(?)

Modoc lavas 1

Overton fanglomerate 1 

Tertiary (?) (pre-Pliocene)

Black Canyon group 2 

Tertiary, upper

Mesa basalt 1

Pueblo Mountain series 1 

Tertiary, lower

Amargosan series 1 

Pliocene

Gilbert andesite 2

Mount Kate volcanics 2

Railroad Ridge basalt 1

Thousand Creek beds 1

Truckee formation l 

Pliocene(?)

Hospital porphyry 2

Malpais basalt 1

Muddy Creek formation !

f Muddy Valley beds l

Pozo formation 2

Rabbit Spring formation »

Spearhead rhyolite 1

Toyabe quartz latite 2 

Probably Pliocene

Panaca formation 1 

Pliocene or Pleistocene

Knickerbocker andesite 2 

Pliocene, upper, and Pliocene, lower

Lousetown formation 2 

Pliocene, lower (?)

Oddie rhyolite 1 

Miocene and Pliocene(?)

Humboldt formation 1 

Miocene

Davis Creek beds 1

Forman volcanics 2

Virgin Valley beds *

United States Continued 

Nevada Continued 

Miocene(?)

American Ravine andesite porphyry 2

Davidson granodiorite 2 

Miocene, upper, or later

Maris rhyolite 1 

Miocene or Pliocene, lower

Kate Peak formation 2 

Miocene, upper, or Pliocene, lower

Currant tuff 2 

Miocene, upper, and Pliocene, lower

Bald Mountain lake beds member (of Esmeralda formation) >

Diamond King member (of Esmeralda formation) 1

Esmeralda formation * Hedwig breccia member (of 

Esmeralda formation) 1

Round Rock member (of Esmeralda formation) l 

Miocene, upper

fCedar Mountain beds *

Fraction breccia 1

Mira basalt 1

tSiebert formation 1

Siebert tuff 1 

Miocene, upper (?)

Brougher dacite 1

Divide andesite 1

Espina breccia l

Heller dacite 1 

Probably pre-upper Miocene

Gil more Gulch formation 1 

Miocene, lower

Pueblo Range series l 

Oligocene(?)

Alta formation 2

Hartford Hill rhyolite tuff 2

Sutro member (of Alta forma- tion) 2 

Eocene

Elko shale or group 1 

Bocene(?)

Horse Spring formation 1 

Upper Cretaceous

Baseline sandstone 2

Willow Tank formation 2 

Upper Cretaceous (?)

Thumb formation 2 

Jurassic or Cretaceous

Rocky Canyon granite * 

Jurassic

Oreana shale 1

Scossa slates l 

Jurassic(?)

Aztec sandstone 1 

Lower Jurassic

Dunlap formation 1

Lovelockian series 1

Muttleberry limestone *

Sunrise formation l 

Triassic

Red Rock limestone 2

Rochester rhyolite 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 501

United States Continued 

Nevada Continued

Upper Triassic 

Cane Spring formation 2 

Dun Glen formation 2 

Gabbs formation 1 

Grass Valley formation 2 

Luning formation 1 

Osobb formation 2 

Raspberry formation 2 

Winemucca formation 3

Upper(f) Triassic 

fStaran series * Middle and Upper Triassic 

Natchez Pass formation 2 

Star Peak group 1

Middle Triassic

Augusta Mountain formation 2 

Favret formation 2 

Grantsville formation 2 

fKoipatoan series J 

Nenzel rhyolite breccia 2 

Panther Canyon formation 2 

Prida formation 2 

Simon quartz keratophyre 1

Middle(?) Triassic 

Excelsior formation 1 

Limerick keratophyre J

Lower and Middle (?) Triassic 

China Mountain formation 2

Lower Triassic

Candelaria formation 1 

Dixie Valley formation 2 

Tobin formation 2

Lower Triassic and Permian(f) 

Weaver rhyolite 1

Permian and Triassic

Koipato formation 1 or group

Permian

Arcturus limestone 1 

Diablo formation 2 

Edna Mountain formation 2 

Rochester trachyte 1 

Tallman fanglomerate 2

Darrough felsite 2 

Pablo formation 2

Car&om/erows

Diamondian series *

Pennsylvanian and Permian 

Callville limestone 1 

Havallah formation 2

Rib Hill formation 2

fRuth limestone * 

Upper Pennsylvanian and Permian

Antler Peak limestone 2

Strathearn formation 2 

Middle Pennsylvanian

Battle formation 2

Highway limestone 2

Tomera formation 2 

Lower Pennsylvanian

Moleen formation 2

Whistler Mountain alaskite 2

United States Continued 

Nevada Continued

Mississippian and Pennsylvanian

Tonka formation 2 

Mississippian (see also Devonian

or

Indian Springs member (of Bird

Spring formation) 1 

fRobinson shale 1 

Rogers Spring limestone ' 

San Simon limestone * 

Mississippian(f)

Inskip formation 2 

Uppjer Mississippian to Permian

Bird Spring formation 1 

Upper Mississippian and Lower

Pennsylvanian 

Bailey Spring limestone l 

Ely limestone l 

Upper Mississippian 

Arrowhead limestone member (of

Monte Cristo limestone) 1 

Bluepoint limestone l 

Chainman shale l 

Diamond Peak formation (as

quartzite *) 

Illipah formation 2 

Scotty Wash quartzite 1 

Yellowpine limestone member (of

Monte Cristo limestone) ' 

Lower and Upper Mississippian 

Monte Cristo limestone '

dolomite

Peers Spring formation 1 

fWhite Pine shale 1 

Lower Mississippian 

Anchor limestone member (of 

Monte Cristo limestone) 1 or 

member (of Monte Cristo 

dolomite)

Bristol Pass limestone l 

Bullion dolomite member (of 

Monte Cristo limestone) * or 

member (of Monte Cristo 

dolomite)

Dawn limestone member (of 

Monte Cristo limestone) * or 

member (of Monte Cristo 

dolomite) 

Joana limestone l 

Mississippian or older 

Leach formation 2 

Pumpernickel formation 2 

Devonian and Mississippian

Pilot shale l 

Devonian

Lamoureux or Lamoureaux shale 1 

Pinean series 1 

Woodpecker limestone 1 

Upper Devonian 

Atrypa limestone * 

Combs limestone 1 

West Range limestone 1 

Middle and Upper Devonian

Crystal Pass limestone member 

(of Sultan limestone) 1
502 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Nevada Continued

Middle and Upper Devonian Con.

Devils Gate limestone 2

Ironside dolomite member (of 

Sultan limestone) J

fNevadan series J

Sultan limestone '

Valentine limestone or dolomite 

member (of Sultan limestone) 1 

Middle Devonian

Silverhorn dolomite l

Slaven chert 2 

Middle Devonian and possibly older

Muddy Peak limestone 1 

Lower and Middle Devonian

Nevada limestone 1 or formation 

Lower Devonian

Cooper Peak dolomite 2 

Silurian

Lone Mountain dolomite (as 

limestone *)

Roberts Mountains formation 2 

Upper Silurian

jLone limestone 1 

Middle Silurian

Timpahutean series l 

Ordovician

Pahranagat limestone *

Pinyon series l 

Ordovician(f)

Coaldale chert 2

Mayflower schist l

Sonoma Range formation 2

Zanzibar limestone 1 

Upper Ordovician

Ely Springs dolomite 1

Hanson Creek formation 2 

Middle Ordovician

Eureka quartzite 1 

Lower Upper Ordovician

Valmy formation 2 

Lower, Middle, and Upper(f) Ordovician

Toquima formation l 

Lower and Middle Ordovician

Pogonip group (as limestone J)

Vinini formation 2 

Lower and Middle (?) Ordovician

Palmetto formation * 

Lower Ordovician

Cherry shale x

Comus formation 2

Egan limestone 1

Goodwin limestone (as formation l)

Goodwinian series *

Lehman formation 2

fPogonipan series l

Schell shale »

Steptoean series J

Tank Hill limestone l

Willow limestone l

Yellow Hill limestone l

United States Continued 

Nevada Continued 

Cambrian

Gold Hill formation l

Morning Glory limestone member (of Gold Hill formation) 1

Pine Nut limestone member (of 

Gold Hill formation)»

fProspectan series 1

Swarbrick formation 1

Tybo shale l

White Caps limestone member

(of Gold Hill formation) 1 

Upper Cambrian to Devonian(?)

Goodsprings dolomite 1 

Probably Upper Cambrian

Hales limestone 1 

Upper Cambrian

Dunderberg shale 1

Dunderbergian series 1

tHambergian series l

Hamburg limestone J or dolomite

fHamburg shale * Harmony formation 2

Mendha limestone 1 

Middle or Upper Cambrian

Preble formation 2 

Middle and Upper Cambrian

Highland Peak limestone * 

Middle(?) and Upper Cambrian

Emigrant formation 1 

Middle Cambrian

Burnt Canyon limestone 2

Burrows dolomite 2

Burrows shale 2

Chisholm shale '

Comet shale 2

Condor member (of Swasey limestone) 2

Eldoradan series 1

Eldorado dolomite (as limestone J)

Geddes limestone 2

Lyndon limestone 1

Peasley limestone 2

fProspect Mountain limestone 1

Rubyan series 1

fSecretan series *

Secret Canyon shale 1 

Middle(?) Cambrian

Scott Canyon formation 2 

Lower and Middle Cambrian

Combined Metals member (of 

Pioche shale); (as bed J)

Pioche shale * 

Lower Cambrian

Forlorn Hope shale 2

Johnnie formation 1

Miller Mountain formation 2

Prospect Mountain quartzite 1

Silver Peak group l

Stirling quartzite 1

Wood Canyon formation l 

Lower Cambrian(f)

Osgood Mountain quartzite 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 503

United States Continued 

Nevada Continued 

Precambrian or Tertiary 

Boulder Wash group 2 

Precambrian

Clover quartzites J 

Age(t)

Canon rhyolite 1 

Elder sandstone 2 

Gold Butte granite 2 

New Hampshire 

Paleozoic(?) 

Coos group J

Kearsarge andalusite group 1 

Upper Paleozoic(?) 

f Berlin gneiss 1 

Carboniferous(?)

Albany quartz syenite J 

Garland Peak syenite 2 

Lafayette granite porphyry 1 

Mount Tripyramid complex 2 

Passaconway syenite 2 

Red Hill complex 2 

Watson Ledge quartz syenite 2 

Carboniferous or post-carboniferous

Fitzwilliam granite 1 

Carboniferous to Precambrian(f) 

fLake Winnipesaukee gneiss 1 

Pennsylvanian (?) 

Gonic formation l 

Rindgemere formation 1 

Mississippian(f)

Albany porphyritic quartz syenite 1

Conway granite J 

Moat volcanics 1 

Mount Garfleld porphyritic

quartz syenite 1

Mount Lafayette granite porphyry 1

Mount Osceola granite 1 

Pawtuckaway complex 2 

White Mountain plutonic-volcanic series (as magma series J) 

Devonian or Carboniferous 

Albany granite ' 

Ames monzodiorite 1 

Baldface phase J (of Conway

granite)

Belknap syenite l 

Black Cap phase J (of Conway

granite)

Chatham granite J 

Chocorua granite J 

Diana phase J (of Conway granite)

Endicott diorite 1 

Franconia breccia l 

Gilford gabbro J 

Gilmanton monzodiorite J 

Lake quartz syenite 1 

Landaflf granite 1 

Moody Ledge granite 1 

Moulton diorite l 

Owls Head granite 1 

Pemigewasset series 1

United States Continued 

New Hampshire Continued

Devonian or Carboniferous Con.

Pond Hill granite 1

Priest Hill granite l

Randolph granite 1

Rowes vent-agglomerate *

Sawyer quartz syenite 1

Scrag granite J

Sugar Hill quartz monzonite J 

Devonian (?)

Albany porphyritic nordmarkite J

Durham quartz diorite * Hampton granodiorite * Mount Moat conglomerate *

Pequawket breccia J

Rochester biotite granite 1

South Moat flow 1 

Upper Devonian

Smarts Mountain granite 2 

Upper Devonian(f)

Baker Pond gneiss 2

Bethlehem gneiss l

Bickford granite 1

Concord granite l

Croydon group 2

Exeter diorite 1

French Pond granite x

Haverhill granodiorite 2

Kinsman quartz monzonite (as 

granodiorite l)

Long Mountain granite 2

Mascoma group 2

Meredith granite *

New Hampshire plutonic series 

(as magma series J)

Norway quartz monzonite 2

Remick tonalite l

Spaulding quartz diorite 2

Tamworth granite 2

Unity group a 

Middle or Upper Devonian

Lebanon granite ' 

Middle or Upper Devonian^?)

Oliverian plutonic series (as 

magma series l)

Whitefield gneiss 2 

Post-Lower Devonian

Pine Mountain complex ! 

Lower Devonian

Boott member (of Littleton formation) 2

Dakin Hill member (of Littleton 

formation) 2

Durgin Brook member (of Littleton formation) 2

Hubbard Hill member (of Littleton formation) 2

Jenness Pond member (of Littleton formation) 2

Littleton formation l

May Pond member (of Littleton 

formation) 2

Pittsfield member (of Littleton 

formation) 2
504 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New Hampsiiire Continued 

Lower Devonian(?)

Blueberry Mountain argillite J

Talford schist 1 

Pre- Devonian ( ?)

Parker Hill schist 1 

Silurian and Devonian

Blueberry Mountain series J 

SUurian(f)

Fitch Hill granite gneiss *

Intervale clay slate l

Lyman formation l 

Middle Silurain

Fitch formation l

Fitch Hill arkose » 

Lower and Middle Silurian

Clough quartzite or formation (as

conglomerate *) 

Pre-Silurian

West Bath slate » 

Ordovician to Lower Devonian

New Hampshire sequence 2 

Probably Ordovician and Silurian

Calef member (of Eliot formation) 2

Gove member (of Berwick formation) 2

Rye formation 2 

Ordovician

Albee formation l

Piermont member (of Albee

formation) 2 

Ordovician(?)

Ammpnoosuc volcanics 1

Partridge formation (as slate *) 

Upper Ordovician

Highlanderoft granodiorite *

Highlandcroft plutonic series (as 

magma series J)

fLisbon quartzite J

Lost Nation quartz diorite 2 

Middle Ordovician(f)

Hardy Hill quartzite member (of 

Orfordville formation) 2

Orfordville formation 2

Post Pond volcanic member (of 

Orfordville formation) 2

Sunday Mountain volcanic member (of Orfordville formation) 2 

Cambrian and Ordovician

Lisbon formation 1 

Probably Cambrian

Swift Water formation 1 

Precambrian and Pennsylvanian(f)

fRockingham schist * 

Precambrian (f)

fMontalban l (formation)

Mount Deception granite 1

Rye gneiss * Winnipesaukee quartz diorite (as

gneiss J) 

Precambrian(?) and later

White Mountain series 1

United States Continued 

New Hampshire Continued 

Age(f)

Gunstock gneiss *

South Hampton granite * 

New Jersey

Quaternary (probably Recent)

Lalor sands 1 

Pleistocene

Bridgeton formation l

Cape May formation 1

fFish House beds 1

Fish House clay *

Glassboro gravel 1

fJamesburg formation *

Jerseyan drift l

Pensauken formation 2

fTrenton gravel '

Woodmansie phase (of Bridgeton

formation) * 

Pliocene(f)

Beacon Hill gravel 1

Mount Holly conglomerate l 

Miocene(?)

Cohansey sand ' 

Miocene, upper

Alloway clay 1

Asbury clay 1 

Miocene, middle

Kirkwood formation l

Shiloh marl member (of Kirk

wood formation) l 

Eocene

fLong Branch sand J

fSquankum marl l

{Timber Creek beds l 

Eocene, middle

Shark River marl 1 

Eocene, lower

Manasquan marl 1

Rancocas group or formation '

fSewell formation 1 

Paleocene

Hornerstown marl 1

Vincentown sand 1 

Cretaceous

Sand Hill J (series) 

Upper Cretaceous

fAmboy clays 1

Bay View Avenue sand *

fCliffwood clays *

fColumbus sand '

Crosswicks clay 1

Englishtown sand 1

Farrington sand member (of 

Raritan formation) 2

fHazlet sands * Marshalltown formation l

Matawan group or formation 1

Merchantville clay J

Monmouth group or formation 1

Mount Laurel sand l

Navesink marl 2

Old Bridge sand member (of 

Raritan formation) 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 505

United States Continued 

New Jersey Continued

Upper Cretaceous Continued

fRaritan clay 1

Raritan formation l

Red Bank sand l

Sayreville sand member (of 

Raritan formation) 2

South Amboy fire clay >

Tinton sand member (of Red 

Bank sand) 1

Trenton clays 1

Wenonah sand l

Woodbridge fire clay 1

Wood bury clay l 

Triassic

fRocky Hill trap » 

Upper Triassic

t Arlington traps l

Brunswick shale l or formation

Granton trap 1

Lockatong formation l

Manassas sandstone 1

Newark group l

!

New Germantown trap J 

Sand Brook trap 1 

Snake Hill trap J 

Stockton formation l 

fSourland Mountain trap 1 

Watchung basalt l

Devonian

t Green Pond Mountain group J

Middle Devonian 

Kanouse sandstone l 

fPequanoc shale 1

Silurian

Decker Ferry shales 1 

Green Pond conglomerate » 

fGreen Pond quartzite 1 

fKittatinny sandstone 1 

fShawangunk group 1

Upper Silurian 

Decker limestone 1 

Longwood shale l

Middle Ordovidan

Jacksonburg limestone 1

Cambrian and Lower Ordovidan 

Kittatinny limestone 1

Upper Cambrian and Lower Ordovidan 

fWallkill limestone 1

Lower Cambrian 

Hardyston quartzite 1

Precambrian

Byram granite gneiss 1 

fEdison gneiss l 

Franklin limestone 1 

fFranklin type 1 (gneiss) 

Franklin Furnace band * 

fHamburg Mountain gneiss 1 

Losee diorite gneiss 1 

fLosee Pond granite * 

Montville type J (limestone) 

t Mount Hope type 1 (gneiss) 

fOxford gneiss 1 

Pochuck gabbro gneiss 1

United States Continued 

New Jersey Continued 

Precambrian Continued 

fSand Pond gneiss * 

Stockholm band 1 

fVan Nest Gap gneiss 1

fNew Vernon trap 1 

New Mexico 

Recent

Capulin basalts 2

Carrizozo lava flow 2

Gamerco formation 2

Nakaibito formation 2

Tularosa Malpais lava 2 

Quaternary (see also Tertiary or 

Quaternary)

Bandelier rhyolite tuff 2

Blue Water basalt flow 1

Canjilon till 2

Canones andesite 2

Chico phonolites 2

Clay ton basalts 2

Gilan series 1

Jornadan series *

Lobato basaltic lavas 2

McCartys basalt flow l

Mescalero sands *

Palomasan series *

Puye* gravel 2

Raton basalts 2

Red Mountain dacites 2

Sandia clay *

Santa Clara basalt 2

Slagle trachytes 2

Tuerto gravel 2

Turkey Mountain andesite 2

University beds 2

Vallecito basalt 2 

Pleistocene

Clovis beds 2

Cuerbio basalt 2

Laguna basalt flow l

Palomas gravel l

Suwanee basalt flow 1

Wheatland formation 2 

Pleistocene (?)

Gatuna formation 2 

Pleistocene, upper

Sand Canyon formation 2

San Jon formation 2 

Tertiary or Quaternary

Las Feveras formation 2 

Tertiary or Quaternary(?)

Tulrosa formation > 

Tertiary

Arriban series 1

Caballo Blanco rhyolite tuff 2

Cieneguilla limburgite 2

Cooney quartz latite l

Crankton sandstone 1

Deadwood Gulch rhyolite tuff l

Deza formation (H. E. Wright, 

Jr., 1954, Am. Assoc. Petroleum Geologists Bull., v. 38, 

no. 8, p. 1830-1833)
506 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New Mexico Continued 

Tertiary Continued

Dog Gulch formation l

Espinaso volcanics 2

Fanney rhyolite l

Houston andesite l

Jamez marl 1

Last Chance andesite 1

Latir Peak latite 2

Llano Estacadan series *

Lufkin rhyolite J

Maya conglomerate 1

Mineral Creek andesite l

Mogollon andesite 1

Monument andesite l

Ortega formation 2

Pacific quartz latite 1

Picuris tuff 2

Rio Grande gravels 1

Rio Grande loess '

Selden basalt tongue 2

Whitewater Creek rhyolite l 

Tertiary(f)

Cueva rhyolite 1

Orejon andesite 1

Otero formation J

Soledad rhyolite l 

Tertiary, upper

Albuquerque marl l

Bear Springs basalt 2

Kneeling Nun rhyolite tuff 2

Mimbres Peak formation 2

Pecosan series J

Pollack quartz latite 2

Razorback formation 2

Rio Grande series J

Rubio Peak formation 2

Sugarlump tuffs 2 

Tertiary, middle or upper

Amah'a formation 2 

Tertiary, middle

Chicoma volcanic formation 2 

Tertiary, lower

Aztecan series *

Carson conglomerate 1

Wimsattville formation 2 

Tertiary, lower (?)

Macho pyroxene andesites 2 

Pliocene(f)

Chuska sandstone 1

Eagle Nest formation 2 

Pliocene, upper, or Pleistocene

Ancha formation 2

Servilleta formation 2 

Miocene and Pliocene(f)

Los Pinos gravel (as member of

Hinsda o1 formation J) 

Probably Miocene and Pliocene

Placita marl l 

Miocene

Abiquiu tuff 2

Be 11 Top formation 2

Uvbs basalr 2

United States Continued 

New Mexico Continued 

Miocene(f) to Pliocene

Mimbres conglomerate 2 

Miocene (?)

Chama clays 1

Datil formation l

Lucky Bill formation 2

Pedernal chert member (of

Abiquiu tuff) 2 

Miocene, upper

Popotosa formation 2 

Miocene, pre-upper

El Rito formation 2 

iocene, upper

Hells Mesa member (of Datil 

formation) 2

La Jara Peak member (of Datil 

formation) 2

Spears member (of Datil forma- tion) 2 

Miocene, middle(f) to Pleistocene(?)

Santa Fe group (as formation l) 

Miocene, middle(f) to Pliocene, lower

Tesuque formation 2 

Miocene, middle(f)

Bishops Lodge member (of

Tesuque formation) 2 

Oligocene and Miocene

Thurman formation 2 

Oligocene

Palm Park formation 2 

Eocene and OHgocene(f)

Galisteo formation (as sandstone l) 

Eocene

Canyon Largo sandstone l

Chaco marl l

Chaman series 1

Houten sandstone *

Ratonan series 1 

Eocene(f)

Baca formation 2

Zia marl l 

Eocene, lower

fAlmagre beds 1

JLargo beds 1

Maxwell terrane 1

San Jose formation 2 

Eocene and older (?)

fCanyon Largo group 1

fPinyon Mesa group 1 

Paleocene

Nacimiento group 1 or formation

Puerco formation 1

Torrejon formation l 

Cretaceous or younger

Hanover granodiorite porphyry 2

Santa Rita granodiorite porphyry 2 

Cretaceous and Paleocene

Raton formation 1 

Cretaceous

Chacra J (terrane)

Gallinas shale 1

Mora sandstone 2

Pueblan series 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 507

United States Continued 

New Mexico Continued 

Cretaceous Continued

Sanastee sandstone member (of 

Mancos shale) 2

Whim Hill breccia 2 

Cretaceous (?)

Pyramid shale 1 

Upper Cretaceous and Tertiary (?)

McRae formation 2 

Upper Cretaceous and Tertiary, 

lower

Hall Lake member (of McRae 

formation) 2

Jose Creek member (of McRae

formation) 2 

Upper Cretaceous

Allison member (of Menefee 

formation); (as barren member 

of Mesaverde formation l)

Archuleta shale 1

Atarque member (of Mesaverde 

formation) 2

Barker Dome tongue (of Cliff 

House sandstone) 2

Bartlett barren member (of Crevasse Canyon formation); (as 

barren member of Mesaverde 

formation *)

Beechatuda tongue (of Cliff 

House sandstone) 2

fBell Mountain sandstone member (of Miguel formation) 1

Cano member (of Mesaverde 

formation) 2

fChacra sandstone member (of 

Mesaverde formation) 1

fChamiso formation 1

Cholla Canyon tongue (of Cliff 

House sandstone) 2

Crevasse Canyon formation 2

Dalton sandstone member (of 

Crevasse Canyon formation); 

(as member of Mesaverde 

formation J)

Dilco coal member (of Crevasse 

Canyon formation); (as member of Mesaverde formation *)

Farmington sandstone member 

(of Kirtland shale) l

Fort Stanton shale 1

Fruitland formation l

Gallego sandstone member (of 

Gallup sandstone); (as member 

of Miguel formation J)

Gallup sandstone (as member of 

Mesaverde formation *)

Gibson coal member (of Crevasse Canyon formation); (as 

member of Mesaverde formation l)

Horsehead tongue (of Mancos 

shale) 2

Hosta tongue (of Point Lookout 

sandstone); (as sandstone member of Mesaverde formation J)

United States Continued 

New Mexico Continued

Upper Cretaceous Continued

Juana Lopez sandstone member 

(of Carlile shale) 2

Kirtland shale 1

La Cruz Peak formation 2

La Jara shale 1

La Ventana tongue (of Cliff 

House sandstone); (as sandstone member of Mesaverde 

formation J)

t Madrid formation l

f Miguel formation l

Mulatto tongue (of Mancos 

shale) »

fNavajo shales l

North Hogback tongue (of Point 

Lookout sandstone) 2

Ojo Alamo sandstone 2

Pescado tongue (of Mancos 

shale) 2

Pictured Cliffs sandstone l

Pina Vititos sandstone 1

fPlacer Mountain group 1

fPrieta sandstone 1

Puercan series J

fPunta de la Mesa sandstone 

member (of Mesaverde formation) 1

Pyramid conglomerate 1

Rail Canyon sandstone member 

(of Vermejo formation) *

Satan tongue (of Mancos shale) 1

Sierra Blanca series or coal measures J

fTocito sandstone lentil (of 

Mancos shale) 1

Tohachi formation (as shale l)

Tres Hermanos sandstone member (of Mancos shale) 1

Tuscon sandstone l

Twowells sandstone lentil (of 

Mancos shale) 2

Ute Canyon tongue (of Cliff 

House sandstone) 2

Vermejo formation 1 

Upper(f) Cretaceous

Beartooth quartzite 1 

Lower Cretaceous

Broken Jug limestone 2

Corbett sandstone 2

Garrett conglomerate l

Hidalgo volcanics 2

Howells Ridge formation 2

Mesa Rica sandstone (as member 

of Purgatoire formation 2)

Pa jar it o shale (as member of 

Purgatoire formation 2)

Playas Peak formation 2

Redondo sandstone 2

Revuelto shales 2

Ringbone shale 2

Sarten sandstone l

Skunk Ranch conglomerate 2
508 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New Mexico Continued

Lower Cretaceous Continued

Tucumcari shale (as beds l)

Tucumcarian series 2 

Jurassic

Chavez member (of Morrison 

formation) 2

fOcate sandstone 2

Prewitt sandstone member (of 

Morrison formation) 2

Thoreau formation or sandstone 2 

Jurassic and Triassic(f)

fZunian series 1 

Jurassic(f)

Amarillo sandstone 1 

Upper Jurassic

Chaquaqua shale 1

Todilto limestone (as member of 

Morrison formation l)

Zuni sandstone l

tZuni shale * 

Middle Jurassic

Travester shale 1 

Triassic to Lower Cretaceous (f)

Puertocito formation J 

Triassic

Naranjo formation 2 

Triassic(f)

Endee shale 1

Lobo formation 2

Lukachukai sandstone *

Sheep Pen Canyon formation J

Sloan Canyon formation 1 

Upper Triassic

Agua Zarca sandstone member 

(of Chinle formation) 2

Correo sandstone member (of 

Chinle formation) 2

Pierce Canyon redbeds 1

Poleo sandstone * lentil (of 

Chinle formation)

Redonda formation (as member 

of Chinle formation 2)

Salitral shale tongue (of Chinle 

formation) 2

Santa Rosa sandstone l

fSenorito sandstone lentil (in 

Chinle formation) l

Wingate sandstone l 

Permian and Triassic

t Pecos Valley red beds 1 

Permian

Aqua Torres formation 2

Artesia sands > (subsurface)

Bernal formation 2

fBernalilan series 1

Bernalilo shale 1

Bluewater formation 2

Bower sand 1 (subsurface)

Ceja Glorieta sandstone * Chaves shale 1

fCimarron formation 1

fDog Canyon h'mestone 1

Eddy sandstone 1

fGym limestone 1

United States Continued 

New Mexico Continued 

Permian Continued

fManzano group *

fNogal formation 1

fPecos formation 1

Pecos Canyon sandstone l

fPicacho limestone * 

Permian(f)

Pecos shale l

Torrance shale * 

Permian (Ochoa)

Culebra dolomite member (of 

Rustler formation) 2

Fletcher anhydrite member (of 

Salado formation) 2 (subsurface)

La Huerta siltstone member (of 

Salado formation) 2 (subsurface)

Magenta member (of Rustler 

formation) 2

Ochoa series 2 (subsurface and 

surface)

Vaca Triste sandstone member 

(of Salado formation) 2 (subsurface) 

Permian (Guadalupe)

Azotea tongue (of Seven Rivers 

formation); (as tongue of Carlsbad limestone !)

Carlsbad group (as limestone *)

Chalk Bluff formation l

Grayburg formation 2 (subsurface)

Ocotillo silt member (of Tansill 

formation) 2

Queen formation (as sandstone 

member of Chalk Bluff formation i)

Seven Rivers formation or gypsiferous member (of Chalk Bluff 

formation) 1

Shattuck member (of Queen 

formation) 2

Tansill anhydrite or formation 2

Three Twins member (of Chalk

Bluff formation) * 

Permian (Leonard and Guadalupe)

fChupadera formation l

Hondo sandstone member (of 

San Andres formation); (as 

member of Chupadera formation »)

San Andres limestone (as member of Chupadera formation*) 

Permian (Leonard)

Canas gypsum member (of Yeso 

formation) 2

Drinkard sandy member (of 

Yeso formation) 2 (subsurface)

Glorieta sandstone 1

Joyita sandstone member (of 

Yeso formation) 2

Los Vallos member (of Yeso 

formation) 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 509

United States Continued 

New Mexico Continued

Permian (Leonard) Continued

Lovington sandstone member (of 

San Andres formation) 2

Meseta Blanca sandstone member (of Yeso formation) 2

San Ysidro member (of Yeso 

formation) 2

Torres member (of Yeso formation) 2

Yeso formation (as member of

Chupadera formation J) 

Permian (Wolfcamp and Leonard?)

Abo sandstone 1, red beds 1 , or

formation 

Permian (Wolfcamp)

Bursum formation 2

Pendejo tongue (of Abo forma- tion) 2 

Carboniferous

Ladronesian series J

Lunasan series J

Sandia quartzites J

fSandia series 1 

Pennsylvanian and Permian

Magdalena group or limestone l 

Pennsylvanian

Alamito shale l

Atrasado member (of Madera 

limestone) 2

Bar B formation 2

Bullington member (of Magdalena formation) 2

Coyote sandstone member (of 

Madera limestone) J

Don limestone l

Gobbler formation 2

Gray Mesa member (of Madera 

limestone) 2

Humboldt formation J

Incarnacion fire clay 1

Madera limestone l or formation

Maderan series 1

Manzanan series 1

Montosa limestone 1

Mosca limestone l

Mountain Home shale J

Nakaye formation 2

Oscuro limestone l

Oswaldo formation l

Placitos limestone l

Red House formation 2

Red Tanks member (of Madera 

limestone) 2

fRio Grande series *

Syrena formation l 

Pennsylvanian (?)

Antonito limestone J

Gallegos sandstone J

Tellera limestone 1 

Pennsylvanian (Virgil)

Bruton formation 2

Del Cuerto formation 2

Fresnal group 2

Holder formation 2

United States Continued 

New Mexico Continued

Pennsylvanian (Virgil) Con.

Keller group 2

Moya formation 2 

Pennsylvanian (Missouri)

Adobe formation 2

Beeman formation 2

Burrego formation 2

Coane formation 2

Council Spring limestone 2

Hansonburg group 2

Story formation 2

Veredas group 2 

Pennsylvanian (Des Moines)

Armendaris group 2

Bplander group 2

Cieneguilla formation 2

Cortado formation 2

Elephant Butte formation 2

Garcia formation 2

Warmington limestone member 

(of Elephant Butte formation) 2

Whiskey Canyon limestone 2 

Pennsylvanian (Derry)

Apodaca formation 2

Arrey formation 2

Cuchillo Negro formation 2

Derry series 2

Fra Cristobal formation 2

Green Canyon group 2

Hot Springs formation 2

Mud Springs group 2 

Pennsylvanian (Morrow)

Log Springs formation 2 

Lower Pennsylvanian

Sandia formation 1 

Mississippian, Pennsylvanian, and 

Permian

fFierro limestone l 

Mississippian

Berenda limestone 1

Grande limestone 1

Kelly limestone 1

Sierra limestone 1

Silver-pipe limestone 1

Socorran series l 

Upper Mississippian

Arroyo Penasco formation 2 

Lower Mississippian

Alamogordo member (of Lake 

Valley formation) 2

Andrecito member (of Lake Valley formation) 2

Arcente member (of Lake Valley 

formation) 2

Caballero formation 2

Caloso formation 2

Dona Ana member (of Lake 

Valley formation) 2

Hanover limestone 1

Lake Valley limestone l
510 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New Mexico Continued 

Lower Mississippian Con.

Nunn member (of Lake Valley 

formation) 2

Tierra Blanca member (of Lake

Valley formation) 2 

Devonian or Mississippian(?)

Chloride formation x Devonian

Martinian series l

Sly Gap formation 2 

Upper Devonian

Bella shale 1

Box member (of Percha shale 

formation) 2

Contadero formation 2

Percha shale 1

Ready Pay member (of Percha 

shale) 2

Silver shales 1

Volusia shale J 

Middle Devonian

Onate formation 2

Perchan series J 

Silurian

Santa Rita limestone 1 

Silurian(f)

Cibola limestone 1

Naiad limestone l 

Middle Silurian

Mesillan series 2 

Ordovician and Silurian

fMimbres limestone * 

Ordovician

Armendaris limestone 1

Cristobal limestone J

Frpndosa limestone * Mimbresian series l

fPinos Altos limestones l 

Upper Ordovician

Aleman formation 2

Cable Canyon sandstone 2

Cutter formation 2

Jornada limestone 2

Par value member (of Montoya 

dolomite) 2

Raven member (of Montoya 

dolomite) 2

Second Value member (of Montoya dolomite) 2

Upham dolomite 2

Valmont dolomite 2 

Lower Ordovician

Bat Cave limestone 2

Sierrite limestone 2 

Cambrian

Chiricahuan series J

Hawkins limestone l 

Cambrian(f)

Burro quartzite J 

Upper Cambrian

Chloridian series *

Long quartzite l

Mangas quartzite l

fShandon quartzite 1

United States Continued 

New Mexico Continued 

Upper Cambrian(f)

Carrasco limestone 1 

Middle Cambrian

Dragoonan series 1 

Precambrian

Agua Caliente gabbro 2

Albuquerquan series l

Antonio slate 1

Badito quartzite member (of 

Hopewell series) 2

Blue Springs muscovite schist 2

Cabresto metaquartzite 2

Cleveland Gulch quartzite member (of Hopewell series) 2

Dixon granite 2

Embudo granite 2

Garnuan series 1

Graphic lavas 1

Hondo slate 2

Hopewell series 2

Lacorocah meta-andesite tuff 

member (of greenstone complex) 2

Los Pinos granite 2

Ninos schist l

Ortega quartzite 2

Penasco quartzite 1

Picursian series 1

Petaca schist phase (of Ortega 

quartzite) 2

Picuris basalts 2

Pilar phyllite member (of Ortega 

formation) 2

Priest granite 2

fPueblo quartzite *

Rinconada schist member (of 

Ortega formation) 2

Rociada limestone l

Sais quartzite 2

Sandoval granite 1

Sapello quartzite *

Serna schist *

Sevilleta rhyolite 2

Solitario slate l

Taosan series 1

Tijeras quartzite 1

Truchas slate 2

Tusas granite 2

Vadito formation 2

Valencian series 1

Vallecitos rhyolites 2

White Ridge quartzite 2

Ysidro shale 1

Age(f)

Incarnacion granite J 

New York 

Pleistocene 

Albany clay 1 

Cowaselon clay 1 

Gardiners clay '

Hempstead gravel member (of 

Manhasset formation) 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 511

United States Continued 

New York Continued 

Pleistocene Continued

Herod gravel member (of Manhasset formation) 1

Jacob sand *

Jameco gravel or formation '

Manhasset formation 1

Montauk till member (of Manhasset formation) 1

Saratoga sand l 

Pleistocene (Wisconsin)

Binghamton drift 2

Clean drift 2 

Tertiary

Far Rockaway gravels 1 

Pliocene(f)

Mannetto gravel or formation 1 

Miocene (?) or Pleistocene (?)

Bethpage gravel J 

Cretaceous

Northport clays 1 

Upper Cretaceous

flsland series 1

Lloyd sand 1 member (of Raritan

formation) 

Upper Triassic

Ladentown diabase 1

Palisade diabase l

Union Hill trap 1 

Pennsylvanian

fChautauqua conglomerate 1

Ellicottville conglomerate 1

Olean conglomerate member (of 

Pottsville formation) 1

fOlean shale 1

JRock City conglomerate 1 

Devonian or Carboniferous

Allegany Park parvafacies J

Killbuck conglomerate lentil (of 

Cattaraugus formation) 1

Enapp formation l

Knapp formational suite 1

Knapp monothem 1

Mount Herman sandstone 1

Panama conglomerate l lentil (in 

Cattaraugus formation)

fPope Hollow conglomerate l

fPortville conglomerate 1

Salamanca conglomerate or sandstone member (of Cattaraugus 

formation or Conewango fornation) l

Salamanca formational suite l

Wolf Creek conglomerate lentil

(of Cattaraugus formation) 1 

Devonian

Allegany oil sand 1 (subsurface)

Apulia shale 1 or limestone 1

Cattaraugus formation 1

Butternut shale 2

Chenango sandstone 2

Delphi Station member (of Skaneatles formation) 2

Humphrey sand ! (subsurface)

United States Continued 

New York Continued 

Devonian Continued

Nile sand 1 (subsurfaace)

fOnondaga limestone series 1

Oswayo formation l

Richburg sand l (subsurface)

Scio sand J (subsurface)

fSherburne group 1

Stony Hollow member (of Marcellus formation) a 

Devonian (?)

Chipmonk sand l (subsurface)

Fulmer Valley sand l (subsurface)

Madison Hill sand ' (subsurface)

Marsh sand l (subsurface)

Penny sand 1 (subsurface)

Rice Brook sand 1 (subsurface) 

Upper Devonian

Alfred shale 1

Angola shale J member (of West 

Falls formation)

Arkwright group 2

Attica shale 1

Barryville member l (of Shohola 

formation)

Beebe limestone l

Bluff Point flagstone l (subsurface)

Bradford group l

Cadiz beds l

Canadaway group 1

Canaserage sandstone 1

Caneadea member (of Perrysburg formation); (as shale l)

Canisteo shale member (of Perrysburg formation) 2

Cardiff shale 1

Cascadilla shale member l

Cashaqua shale l member (of 

Sonyea formation)

Cayuta shale member (of Chemung formation) l

Chadakoin beds 1

Chautauquan group l

fChemung conglomerate l

Chemung formation 1

Cherry Creek member (of Venango formation) 2

Cincinnatus sandstone !

Clarksville oil sand 1 (subsurface)

Cornell member 1 (of Portage formation)

Crosby sandstone *

Cuba sandstone 1

Dexterville shale member l (of 

Chadakoin stage)

Dunkirk shale * member (of Perrysburg formation)

Ellicott shale member l (of Chadakoin stage)

Enfield facies subgroup l

Enfleld shale member (of Portage formation) 1

Forestville member (of Canadaway formation) 2
512 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New York Continued

Upper Devonian Continued 

Gardeau shale member (of West

Falls formation); (as member

of Portage formation x) 

Genesee formation (as group) 1

(see p. 621)

Geneseo shale l (see p. 621) 

Genundewa limestone lentil (of

Geneseo shale) 1 (see p. 621) 

Gilboa formation 1 

Gorham shales 1 

Gowanda shale * member (of

Perrysburg formation) 

Grimes siltstone member (of

West Falls formation); (as

sandstone l) 

Hanover shale * 

Haymaker beds l 

Hatch shale * member (of West

Falls formation) 

fHigh Point firestone 1 

fHigh Point sandstone 1 

Hinsdale sandstone ! 

Hume shale member (of Perrysburg formation) 2 

flschua sandstone l 

Ithaca facies sub-group l 

Ithaca shale member (of Portage

formation) 1 (see p. 621) 

Jamestown conglomerate 1 

Juliand member 1 (of Enfield formation)

Kaaterskill formation l 

Kaaterskillian series 2 

Katsberg red beds * 

Kattel shale 1 

Keuka flagstone l 

Laona sandstone l 

Laurens member 1 (of Tully

limestone) 

Letchworth shale l 

Lillibridge sandstone member 1

(of Chadakoin stage) 

Little Genesee conglomerate 1 

Long Beards Riffs sandstone 1 

Machias shale l 

Marathon sandstone member l

(in Ithaca facies subgroup) 

Middlesex shale l member (of

Sonyea formation) 

Milo tongue (of West River shale) 2 

fNaples shale or group 

New Lisbon member 1 (of Tully

formation) 

Northeast shale ' 

fNunda group l 

Nunda sandstone ' member (of

West Falls formation) 

Oneonta sandstone 1 

Onteora formation (as red beds J) 

Otselic shale and sandstone 1 

Parrish limestone bed (as lentil ])

(in Cashaqua shale member

of Sonyea formation)

United States Continued 

New York Continued

Upper Devonian Continued

Penn Yan tongue (of West River 

shale) 2 (see p. 621)

Perrysburg formation 2

Pipe Creek shale member (of 

Hanover shale); (as member of 

Wiscoy sandstone x )

Portage group, formation, or 

shale 1

fPortage sandstone l

{Portland shale l

Prattsburg sandstone and shale 1

Renwick shale member 1 (of 

Middlesex shale) (see p. 621)

Rhinestreet shale i member (of 

West Falls formation)

Rock Stream siltstone member 

(of Sonyea formation); (as 

member of Cashaqua shale 2)

fRockville sandstone l

Rushford sandstone l

Senecan group l

Sherburne flagstone member (of 

Portage formation) ^see p. 621)

Shumia sandstone l

fSilver Creek shale l

Six Mile shale member l (of 

Middlesex shale)

Skunnemunk conglomerate l

Slide Mountain conglomerate l

Sonyea l formation

South Wales member (of Perrysburg formation) 2

Standish flagstone l

Starkey tongue (of Sherburne 

formation) 2

Stony Clove sandstone member 

(of Katsberg red beds) 2

Table Rock sandstone 1

Tinkers Falls member 1 (of Tully 

formation)

Triphammer shale member * (of 

Ithaca facies subgroup)

Twilight Park conglomerate 2

Unadilla formation l

Van Etten l (zone)

Wellsburg sandstone member 

(of Chemung formation) l

Wellsville formation 2

West Brook member l (of Tully 

formation)

Westfield shale 1

West Hill member (of West 

Falls formation); (as formation i)

West River shale » (see p. 621)

White Church zone 1

Whitesville formation 2

Williams Brook coquinite member ! (of Ithaca facies subgroup)

Wiscoy shale or sandstone * Wittenberg conglomerate l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 513

United States Continued 

New York Continued

Middle and Upper Devonian

Catskill formation 1 or red beds

Erie group l or series l 

Middle Devonian

Avery shale l

Ashokan beds l

Athol shale J

Babcock Hill member (of Onondaga formation) 2

Bakoven shale 1

Bellvale flags or sandstone 1

Berne member (of Marcellus 

shale) 1

Berwyn member (of Skaneateles 

shale) *

Bridgewater member (of Marcellus shale) l

fCanadaigua shale 1

Cazenovia group 1

Centerfleld limestone member 

(of Ludlowville shale) 1

Cherry Valley limestone (in Marcellus shale) 1

Chittenango member (of Marcellus shale) l

Colgate member (of Skaneateles 

shale) l

Cornwall shale l

Deep Run member (of Ludlowville shale) 1

Delphi member (of Skaneateles 

shale) J

Edgecliff member (of Onondaga 

limestone) 2

Eighteenmile Creek member (of 

Ludlowville formation) 2

Hamilton group1 ; formation in 

Pennsylvania

Ivy Point member l (of Ludlowville shale)

Joshua submember (of Otisco 

member of Ludlowville formation) 2

Kashong member (of Moscow 

shale) l

King Ferry shale member (of 

Ludlowville shale) l

Kiskatom formation 1

Ledyard member (of Ludlowville 

shale) 1

Leeds facies (of Schoharie formation) 2

Leicester marcasite member (of 

Moscow formation) 2

Levanna shale (in Hamilton 

formation) 1

fLudlowville group l

Ludlowville shale 1

Marcellus shale 1 ; shale member 

(of Romney shale) in Maryland

Menteth limestone member (of 

Moscow shale) *

United States Continued 

New York Continued

Middle Devonian Continued

Moheganter shales and sandstones l

fMonroe shales l

Moorehouse member (of Onondaga limestone) 2

Morse Creek limestone l

Moscow shale 1

Mottville member (of Skaneateles shale) 1

Mount Marion formation (as 

beds i)

Nedrow member (of Onondaga 

limestone) 2

fNewfoundland grit 1 or quartz- ite 1

Oatka Creek shale (in Marcellus 

shale) l

Otisco member l (of Ludlowville 

formation)

Otsego member (of Marcellus 

shale) l

Owasco member 1 (of Ludlowville formation)

Panther Mountain shale and 

sandstone l

Pecksport member l (of Marcellus formation)

Pompey member (of Skaneateles 

shale) l

Portland Point member (of Moscow shale) 1

Seneca limestone l

Shaffer shale 1

fSherburne shale l

Skaneateles shale l

Solsville member l (of Marcellus 

formation)

Spafford member l (of Ludlowville formation)

Spring Brook shale member (of 

Ludlowville formation) 2

Springfield Center member (of 

Onondaga formation) 2

Stafford limestone member (of 

Skaneateles shale) l

Staghorn Point submember 1

Stone Mill member (of Ludlowville formation) 2

Tichenor limestone member (of 

Ludlowville shale) 1

Tully limestone l

fUlsterian group 1

Union Springs member (of Marcellus shale) 1

Wanakah shale l

Windom member (of Moscow

shale); (as shale *) 

Lower or Middle Devonian

Carlisle Center formation 2

Esopus grit, shale l or siltstone

Onondaga limestone l or formation
514 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New York Continued 

Lower or Middle Devonian Con.

Schoharie grit l

Sharon Springs formation 2 

Lower Devonian

Alsen (cherty) limestone '

Be craft limestone l

Bishop Brook limestone 1

fCatskill or Delthyris shaly limestone l

Coeymans limestone 1

Connelly conglomerate 2

Deansboro member (of Coeymans limestone) 2

Glenerie limestone * Helderberg group or limestone 1

Ealkberg limestone l

fKingston beds 1

New Scotland limestone l

Oriskany formation, group l , or 

sandstone l

Oriskany Falls member (of Oriskany sandstone) 2

Port Ewen limestone l

Port Jervis limestone 1

fSchoharie stage *

Thacher limestone member (of

Manlius formation) 2 

Lower (?) Devonian

Saugerties limy shale 1 

Silurian and Devonian

fCornwall limestones l

fOnondaga saliferous group 1 

Silurian

Bear Creek shale (in Clinton 

formation) 1

Binnewater sandstone (in Salina 

formation) l

Brewerton shale l

Bridgeburg horizon l

fBuffalo cement bed l

Chrysler waterlime l

fClinton quartzites l

Donnelly iron ore 1

Elmwood beds l

fEsopus millstone l

t Fiddlers Green limestone 1

Furnaceville iron ore 1

Furnaceville shale l

Gasport shaly channel 1

Gates limestone l

f Green Pond Mountain formation l

Guymard quartzite (W. L. 

Bryant, 1926, Am. Philos. Soc. 

Proc., v. 65, no. 4, p. 259)

Herkimer sandstone 1

High Falls shale l ; formation 1 

in New Jersey

Jamesville limestone 1

Kirkland formation 1

Kirkland limestone and iron ore 1

Kodak white sandstone *

Lakeport limestone l

fLockport group 1

United States Continued 

New York Continued 

Silurian Continued

fLockport marble 1

Maplewood shale l

Martville sandstone l

fNiagara limestone *

{Niagara sandstone 1

{Niagara shale *

0-atka beds l

Olney limestone l

Oneida conglomerate l

tOnondaga group l

fOntario group 1

Ontario series l

Otisville shale member (of Shawangunk formation) l

Otsquago sandstone l

Phoenix or Schroeppel shale l

Pine Hill quartzite 1

Reynales limestone (as member 

of Clinton formation J)

Sauquoit beds l

Scajaquada limy shale *

Shawangunk conglomerate l

Sterling Station iron ore 1

Verona iron ore l

Wolcott Furnace iron ore l 

Silurian(?)

Clark Reservation limestone l

Pools Brook limestone l 

Upper Silurian

Akron dolomite l

Bertie limestone (as member of 

Salina formation x)

Camillas shale (as member of 

Salina formation l)

Cayuga group 1 , dolomite, or 

series

Cobleskill limestone or dolomite 1

Falkirk dolomite 1

Forge Hollow member (of Bertie 

formation) 2

Fuyk sandstone member (of 

Rondout waterlime) 2

Glasco limestone lentil (of Rondout waterlime) 2

Le Fever limestone 2

Lyndon gypsum bed * Manlius limestone l

fOnondaga salt group l

Pittsford shale (as member of 

Salina formation J)

Rondout limestone 1

Rosendale limestone member 

(of Salina formation) l

Salina formation 1 or group

Syracuse salt (as member of 

Salina formation *) (subsurface)

Vernon shale (as member of 

Salina formation !)

Wilbur limestone member^(of 

Salina formation) 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 515

United States Continued 

New York Continued

Upper Silurian Continued

Williamsville waterlime and shale 1 

Middle Silurian

Brewer Dock member 1 (of Clinton formation)

Clinton formation l or group

Dawes sandstone 2

Gasport limestone member (of 

Lockport dolomite) l

Goat Island member (of Lockport formation) 2

Irondequoit limestone (as member of Clinton formation J)

Lockport dolomite '

Neahga shale 1

Niagara group ', limestone, dolomite, or series

Oak Orchard member (of Lockport formation) 2

Rochester shale (as member of 

Clinton formation *)

tShelby dolomite l

Sodus shale (as member of 

Clinton formation x)

Vanhornsville sandstone 1

Westmoreland member (of Clinton formation) 2

Williamson shale member (of 

Clinton formation) 1

Willowvale shale 2

Wolcott limestone (as member

of Clinton formation J) 

Lower Silurian

Albion group (as sandstone !)

Fish Creek shale 2

Rumsy Ridge sandstone member 

(of Fish Creek formation) 2

Whirlpool sandstone (as member

of Albion sandstone *) 

Ordovician

Burden conglomerate 1

t Dudley limestone 1 or series x

JHudson schist 1

Marlboro member (of Hudson 

River formation) 2

Peekskill phyllite l

Poestenkill fault breccia 1

fTaconic slate l

fTrenton conglomerate l

Trenton Falls series 1 

Ordovician and Cambrian(?)

fChamplain division 1 

Upper Ordovician and Silurian

Brayman shale l

t Medina group l

fOswegan period or group 1 

Upper Ordovician

Atwater Creek shale 1

Bennett Bridge beds 1

Deer River shale 1

Fairfield slate l

Frankfort shale 1

5<H835 59 8

United States Continued 

New York Continued

Upper Ordovician Continued

Harter member (of Frankfort 

formation) 2

Hasenclever member (of Frankfort formation) 2

Holland Patent * (zone)

Indian Ladder formation (as 

beds 0

tLewiston shale 1

Lorraine group l

Loyal Creek l (zone)

fMohawk slate group 1

Moose Creek beds l

Moyer member (of Frankfort 

formation) 2

Nowadaga 1 (zone)

Oswego sandstone 1

Pulaski shale l

fSalmon River sandstone l

Sandy Creek beds l

Tremaines Bridge beds l

Utica shale l

Whetstone Gulf formation l

Wood Creek beds l

Worthville beds 1 

Upper Ordovician(?)

Amawalk granite 2 

Middle Ordovician

Amsterdam limestone l

Austins Glen member (of Normanskill formation) 2

Balmville limestone member (of 

Wappinger limestone) 1

Black River group 1

Camp member (of Denmark 

formation) 2

Canajoharie shale 1

Chaumont formation l

Chazy group 1 or limestone

Cumberland Head shale 1

Chuctenunda J (zone)

Crown Point limestone l

Denmark member (of Sherman 

Fall formation) 2

Dolgeville shale 1

Fort Plain l (zone)

Gansevoort J (zone)

Glendale member of (Denmark 

formation) 2

Glens Falls limestone 1

Hounsfield bentonite l

Indian River slate l

Leray limestone member (of 

Lowville limestone) l

Lorette formation l

Lowville limestone l

Minayille member (of Canajoharie formation) 2

t Mohawk limestone l

Mohawkian series l

Morphy 1 (zone)

Mount Merino chert and shale 

member (of Normanskill formation) 2
516 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New York Continued

Middle Ordovician Continued 

Normanskill shale 1 

Pamelia limestone l 

Poland limestone member (of

Denmark formation) 2 

Rathbun limestone member (of

Denmark formation) 2 

Rust limestone member (of Cobourg formation) 2 

Russia limestone member (of

Denmark formation) 2 

Rysedorph conglomerate l 

Schenectady formation l 

Sherman Fall formation 1 

Snake Hill formation 1 

Sprakers l (zone) 

Steuben limestone member (of

Cobourg formation) 2 

Tackawasick limestone l 

Trenton limestone or group l 

Van Schaick l (zone) 

Watertown limestone l 

Middle(?) Ordovician 

Stony Point shale 1 

Lower and Middle Ordovician

f Mohawk group 1 

Lower Ordovician

Bald Mountain limestone l 

Baldwin Corner formation (R. H.

Flower, 1952, in Geol. Soc.

America Guidebook for field

trips in New England, p. 35) 

Beekmantown group or limestone 1 

Benson dolomite member (of

Tribes Hill formation) 2 

Bucks Bridge mixed beds l 

Chuctununda Creek dolomite 2 

Copake limestone * 

Cranesville dolomite 2 

Day Point limestone l 

Deepkill shale l 

fDepauville waterlime * 

Fonda limestone member (of

Tribes Hill formation) 2 

Fort Ann limestone member (of

Tribes Hill formation) 2 

Fort Johnson member (of Tribes

'Hill formation) 2 

Gailor dolomite 2 

Great Meadows formation (R. H.

Flower, ibid.)

Halycon Lake calc-dolomite 2 

Hewittsville calcilutites or beds l 

Mosherville sandstone member

(of Gailor dolomite) 2 

Norton limestone member (of

Tribes Hill formation) 2 

Ogdensburg formation l 

Palatine Bridge limestone member (of Tribes Hill formation) 2 

Rochdale limestone 1 

Schaghticoke shale * 

Smith Basin formation (R. H.

Flower, ibid.)

United States Continued 

New York Continued

Lower Ordovician Continued

Tribes Hill limestone *

Valcour limestone l

Warwick limestone 1

Whitehall formation 2

Wolf Hollow limestone member 

(of Tribes Hill formation) s 

Cambrian, Ordovician and probably 

Silurian

tChamplain group 1 

Cambrian and Ordovician

Fishkill limestone 1

fPoughquag limestone l 

Cambrian

Ashley Hill limestone l

Claverack conglomerate (In 

Schodack formation) 2

fSaratoga formation, group, or

series 1 

Cambrian(f)

fStissing quartzite l 

Upper Cambrian or Ordovician

Broadalbin passage beds 2

fHudson formation l

Hudson River group l

Ritchie limestone 2 

Upper Cambrian to Lower Ordovician

Moses Hill beds 2 

Upper Cambrian

Adirondack-Border series 2

Ausable sandstone l

Briarcliff dolomite 2

Dewey Bridge dolomite (R. H. 

Flower, ibid.)

Galway formation 1

fGreenfield limestone 1

Heuvelton sandstone * Hoyt limestone member (of 

Theresa dolomite) 1 or dolomite 1

Little Falls dolomite 1

Neelytown limestone l

Pine Plains formation 2

fPotsdam limestone J

Potsdam sandstone 1

Skene dolomite member (of 

Whitehall formation) 2

Theresa dolomite * 

Upper Cambrian(?)

Keeseville sandstone l 

Lower Cambrian to Middle 

Ordovician

Barnegat limestone J

Newburgh limestone 1

Peekskill Creek limestone 1

fWappinger limestone l 

Lower and Middle Cambrian

Stissing dolomite 1 

Lower Cambrian

Diamond Rock quartzite l

Eagle Bridge quartzite l

Eddy Hill grit » Greenwich formation l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 517

United States Continued 

New York Continued

Lower Cambrian Continued

Mettawee slate l

Nassau formation (as beds *)

Poughquag quartzite l

Schodack formation l

Troy shales 1 

Lower Cambrian(f)

Rensselaer graywacke 1 

Precambrian, Cambrian, and 

Ordovician

Hudson schist * 

Precambrian

Adirondack anorthosyte 1

Adirondack gneiss 1

Alexandria syenite *

Alexandria type J (granite)

Aliens Falls fanglomerate 2

Antwerp type granite 2

fAusable granite 1

Ausable syenite l

Bald Hill granite gneiss *

Barton gneiss *

Beach Mountain paramphibolite 1

Bear Pond schist l

Beech Mountain amphibolite 1

Brooklyn gneiss l

Bryant Lake limestone 1

California granite 1

Canada Hill granite 1

Canton phacolithic complex l

Catamount schist l

Cat Hill gneissoid granite 1

Chesterfield limestone 1

Chippewa granite l

Croghan syenite granite complex 1

fDannemora formation l

DeKalb granite l

Diana syenite complex l

Dixon schist 1

Dresden amphibolite l

Elizabeth gabbros 1

Elizabethtown gabbro 1

Faxon limestone l

Fordham gneiss 1

Fort Washington gneiss *

Geers Corners gabbro 2

Glenham gneiss 1

Gore Mountain gabbro 2

Gouverneur granite 1

Gouverneur limestone 1

Grampus gneiss l

Hague gneiss l

Hammondville gneiss 1

Harlem gneiss 1

Hawkeye granite l gneiss

Hermon granite gneiss (as type *)

High Bridge gneiss 1

Highland gneiss 1

Hudson Highlands complex 2

Hyde granite 1

Indian River hornblende syenite 2

Inwood limestone 1

United States Continued 

New York Continued 

Precambrian Continued

Jayville granite 2

Johnsburg limestone l

Keeseville granite l

Kingsbridge marble l

Keene gneiss 1

Long Lake gneiss l

Loon Lake quartz-syenitic complex 2

Lowerre quartzite l

Lowville granite l

Lyon Mountain granite ' gneiss

Macomb granite 1

Mahopac granite l

t Manhattan group l

{Manhattan gneiss 1

Manhattan schist l

Marcy anorthosite l

Matteawan granite * Mohegan granite l

Moon Lake diorite 1

Morris granite l

Mott Haven limestone l

New Bremen granite 2

New Rochelle serpentine * Orchard gneiss l

fOswegatchie series 1

Pawling gneiss l

Peekskill diorite gneiss l

Peekskill granite 1

Piercefield gneiss 1

Picton granite *

Pitcairn gneiss complex 2

Pleasant Lake gabbro 2

Pochuck diorite l

Pyrites granite 1

Ravenswood granodiorite 1

Reservoir granite 1

Reservou- Hill granite '

Rossie intrusive complex l

Russell feldspathic gabbro 2

Sacandaga quartzite 1

St. Regis granite 2

Santa Clara complex 2

Saranac formation 1

Shenandoah Mountain granite 1

Simons syenite 1

Sing Sing marble l

Split Rock * (type granite)

Sprout Brook limestone *

Stark complex (as quartz syenitic 

complex 2)

Storm King granite l

Swede Pond quartzite l

Theresa syenite l

Trout Pond limestone 1

Trumbull gneiss 1

Tuckahoe marble l

Tupper syenite 1

Union Corners granite l

Westchester gneisses and granites l

Whiteface anorthosite l

Yonkers granite l
518 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

New York Continued 

Precambrian(f)

Harrison diorite 1

Hoboken serpentine l

Staten Island serpentine l 

Age(f)

Bedford "augen" gneiss 1

Bethel pyroxene diorite 1

Bull Pond limestone 1

Cortland series *

Croton Falls hornblendite 1

Hortontown basic eruptives * Macombs Dam gneiss 1

Natural Bridge limestone 1

Peach Lake diorite *

Peekskill norite l

Poundridge granite *

Randels Island gneiss 1

Syracuse serpentine 1 

North Carolina 

Pleistocene

Cape Fear coquina 2

Castalia sand 2

fChowan formation l

Coharie formation l

Kure sandstone 2

Pamlico formation ! or sand

Pine sand 2 

Pliocene, lower

Croatan sand l 

Miocene, upper

Duplin marl l 

Miocene, middle(?) and upper

fMurfreesboro stage l 

Miocene, lower

Trent marl l 

Eocene, upper, and Miocene, lower

fWilmington beds 1 

Eocene, middle and upper

Castle Hayne limestone (as marl*) 

Upper Cretaceous

fBladen formation l

fCape Fear formation l

Snow Hill marl member (of

Black Creek formation) 1 

Triassic

Lowes Grove beds 2

Nelson beds 2 

Triassic(f)

Bakersyille gabbro ' 

Upper Triassic

t Chatham series 1

Cumnock formation l

fDan River series l

fDeep River formation l or series l

Pekin formation l

Sanford formation l 

Carboniferous(?)

Whiteside granite ' 

Devonian (?)

Cherryville quartz monzonite 2 

Ordovician

Toluca quartz monzonite 2

United States Continued 

North Carolina Continued 

Cambrian

Draytonville conglomerate member (of Kings Mountain quartzite) 1

Kings Mountain quartzite * 

Lower Cambrian

Andrews schist 1

Brasstown schist l

Brevard schist 1

fCherokee slates l

Clingman conglomerate *

Hazel slate 1

Murphy marble l

Nottely quartzite l

Tusquitee quartzite 1

Yalleytown formation 1

Vann quartzite 2 

Precambrian and Cambrian

fKings Mountain group, 1 series, 1 

or slates 1

fLinville slates 1

fPiedmont group l 

Precambrian and Cambrian(f)

fBuncombe group 1 

Precambrian

Aaron slate l

Beech granite 1

Bessemer granite 1

Big Butt quartzite 2

Blowing Rock gneiss * Carolina gneiss l

Cranberry granite l

Flattop schist * Great Smoky group (as conglomerate !)

Henderson granite 1

Humpback gneiss 2

Hurricane graywacke 2

Max Patch granite 1

Montezuma schist 1

Raleigh graphite 2

Snowbird group (as formation J)

Thunderhead sandstone (as conglomerate x) 

Precambrian(?)

fMonroe beds or slates 1

Nantahala slate l

Bearwallow schist 2 

Buck Ridge schist 2 

Purefoys Mill series 1 

Spruce Pine alaskite 2 

Tempa schist 2 

North Dakota

Pleistocene

Lake Agassiz clays 1 

Lake Agassiz silt l

Tertiary (f)

Mandanan series 1

Eocene

Beaver Creek coal group l 

Golden Valley formation 2 

Yule coal group J
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 519

United States Continued 

North Dakota Continued 

Paleocene

Almpnt sandstone (in Tongue 

River member of Fort Union 

formation) 2

Cannonball marine member (of 

Fort Union formation); (as 

member of Lance formation J) 

Fort Union formation 1 

Great Bend coal group 1 

Medora coal group 1 (in Tongue 

River member of Fort Union 

formation) 

Sentinel Butte shale member (of

Fort Union formation) 1 

Cretaceous 

Breien member (of Hell Creek

formation) 2 

Jurassic

Kline member (of Nesson formation) 2 (subsurface) 

Nesson formation 2 (subsurface) 

Poe evaporite member (of Nesson

formation) 2 (subsurface) 

Mississippian and Devonian(f)

Bakken formation 2 (subsurface) 

Middle(?) and Upper Devonian 

Souris River formation 2 (subsurface)

Middle Devonian 

Prairie formation (as evaporite 2)

(subsurface) 

Ohio

Pleistocene

Springfield clay l 

Pleistocene (Wisconsin)

Chillicothe till l 

Pleistocene (pre-Illinoian)

Minford silt ' 

Permian

Hostetter limestone 2 

Marietta sandstone 1 

Muskingum conglomerate (in

Washington formation) l 

Pennsylvanian 

Anderson clay 1 

Athens group l

Anthony cyclothem (including 

Anthony shale and sandstone) 2

Ballou clay (in Allegheny formation) *

Barton clay (in Conemaugh formation) l 

Bear Run member (of Pottsville

formation) l

Bedford clay (in Pottsville formation) l

Bellaire sandstone (in Conemaugh formation) l 

Big Run sandstone 2 

Bloomfield limestone (in Conemaugh formation) 1 

Boggs member (of Pottsville 

formation) 1

United States Continued 

Ohio Continued

Pennsylvanian Continued

Brill sand l (subsurface)

Buell Run sand 1 (subsurface)

Cow Run sandstone (in Conemaugh formation) 1

Door Run shale member (of 

Allegheny formation) 2

Dresden sandstone (in Pottsville 

formation) l

Fishpot sandstone (in Monogahela formation) l

Flag Spring limestone (in Conemaugh formation) 1

Flint Ridge clay (in Pottsville 

formation) 1

Flint Ridge flint (in Allegheny 

formation) l

Flint Ridge limestone 1

Flint Ridge shale (in Pottsville 

formation) 1

Fly sandstone 2

Gaysport member (of Conemaugh formation) l

Germantown sand l (subsurface)

Goose Run sand l (subsurface)

Gore limestone (in Pottsville 

formation) >

Hamden limestone or member (in 

Allegheny formation) l

 [ Hanging Rock limestone (in 

Allegheny formation) l

Harlem clay (in Conemaugh formation) l

Harrison member (of Pottsville 

formation) 1

Hecia sandstone (in Allegheny 

formation) *

Hewetts Branch sandstone (in 

Allegheny formation) l

Hockingport sandstone 2

fHowenstein limestone (in Allegheny formation) 1

Huckleberry clay (in Pottsville 

formation) l

Kittanning limestone (in Allegheny formation) 1

Lawrence clay (in Allegheny 

formation) 1

Logan fire clay (in Pottsville 

formation) 1

Lowell limestone (in Allegheny 

formation) l

Lowellville limestone (in Pottsville formation) l

McArthur member (in Pottsville 

formation) l

Macksburg sandstone l

Mason clay (in Conemaugh formation) 1

fMassillon sandstone (in Pottsville formation) l

Maxville block ore (in Pottsville 

formation) 1
520 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Ohio Continued

Pennsylvanian Continued

fMeigs Creek white limestone (in 

Monongahela formation) 1

Mitchell sand l (subsurface)

Moxahala clay (in Allegheny formation) l

Nagle sand l (subsurface)

Norris limestone (in Allegheny 

formation) 1

Oak Hill clay (in Allegheny formation) 1

Ogan clay (in Allegheny formation) i

fOhio conglomerate !

Patriot limestone (in Conemaugh 

formation) 1

Peeker sand l (subsurface)

Pomeroy sandstone (in Monongahela formation) 1

Porterville fossiliferous horizon 

or limestone (in Conemaugh 

formation) J

Poverty Run limestone (in Pottsville formation) >

Redstone clay (in Monongahela 

formation) J

Round Knob horizon or shale 

member (in Conemaugh formation) l

Salem limestone (in Allegheny 

formation) 1

Schramm sand l (subsurface)

Scioto freestone (in Allegheny 

formation) 1

f Sciotoville fire clay (in Pottsville 

formation) l

Sharon clay 1

fShawnee limestone (in Allegheny formation) l

Skelley limestone (in Conemaugh 

formation) l

Snow Fork limestone (in Allegheny formation) l

fStillwater sandstone (in Conemaugh formation) l

Strasburg cyclothem (including 

Strasburg shale and/or sandstone) 2

fSummerfield limestone (in Conemaugh formation) 1

Tionesta clay (in Pottsville formation) l

Vandusen cyclothem (including 

Vandusen clay, shale, and 

sandstone) 2

Vincent sand 1 (subsurface)

Washington ville member (of Allegheny formation) 1

Wilgus clay (in Conemaugh formation) l

Winters clay (in Allegheny formation) 1

Wolf Creek sand l (subsurface)

United States Continued 

Ohio Continued

Pennsylvanian Continued

Zaleski flint (in Allegheny formation) *

Zoar limestone (in Pottsville formation) * 

Upper Pennsylvanian

Ames limestone member (of 

Conemaugh formation) l

Cambridge limestone member 

(of Conemaugh formation) *

Ewing limestone member (of

Conemaugh formation) l 

Middle Pennsylvanian

Putnam Hill limestone member

(of Allegheny formation) l 

Mississippian

Allensville member (of Logan 

formation) l

Armstrong member (of Cuyahoga formation) l

Aurora siltstone member (of 

Orangeville shale) l

Bedford shale 1 or formation

Berea sandstone l or formation

fBerea shale *

Berne member (of Cuyahoga 

formation) 1

Black Hand formation 1 or sandstone

fBrecksville shale member (of 

Orangeville shale) 1

Buena Vista sandstone member 

(of Cuyahoga formation) 1

Burbank member (of Cuyahoga 

formation) l

Byer member (of Logan formation) 1

Canter limestone l

Chardon siltstone member (of 

Orangeville shale); (as sandstone1)

Churn Creek member (of Cuyahoga formation) 1

fCity Ledge sandstone (in Cuyahoga formation) 1

Cuyahoga formation, group l or 

shale

Euclid sandstone member (of 

Bedford shale); (as lentil !)

Fairfield member (in Cuyahoga 

formation) 1

Granville beds 1

Granville shale facies l (of Cuyahoga formation)

Hamden sand 1 (subsurface)

Hanover pebble bed (in Cuyahoga formation) 2

Henley shale member (in Cuyahoga formation) :

Hocking Valley conglomerate 

facies l (of Cuyahoga formation)

Killbuck shale facies (of Cuyahoga formation) 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 521

United States Continued 

Ohio Continued

Mississippian Continued 

Licking shale 1 

Lithopolis member (in Cuyahoga

formation) * 

Logan formation 1 

t Logan group 1 

fLogan limestone or flint (in

Logan formation) 1 

Maxville limestone 1 

fNewtonville limestone ' 

Pleasant Valley member (of

Cuyahoga formation) 2 

Portsmouth member (in Black

Hand formation) 2 

Pretty Run sandstone facies (of

Logan formation) 2 

Racoon shale 1

Rarden shale member J (of Cuyahoga formation) 

Richland limestone and flint * 

Rittman conglomerate lentil (of

Cuyahoga formation) 1 

River Styx conglomerate facies

(of Cuyahoga formation) 2 

fRoyalton formation 1 

Rushville group * 

Sagamore sandstone member

(of Bedford shale); (as lentil J) 

Scioto Valley shale facies x (of

Cuyahoga formation) 

Scotts Creek flint' 

Sunbury shale 1 

Tinkers Creek shale facies (of

Cuyahoga formation) 2 

Toboso conglomerate facies l (of

Cuyahoga formation) 

Vinton member * (of Logan formation)

Warren sandstone * 

fWaverly conglomerate 1 

Welsh stray sand 1 (subsurface) 

Mississippian and Devonian(f) 

fSunbury calciferous sandrock 1 

fWaverly group 1 

Devonian(f)

Grand Rapids sandstone * 

Upper Devonian 

Chagrin shale 1 

Cleveland member (of Ohio

shale); (as shale ') 

fErie shale » Huron member (of Ohio shale);

(as shale x) 

Ohio shale 1 

Olentangy shale 1 

fOlmsted shale member (of

Cleveland shale) 1 

Scioto slates and shales 1 

Middle Devonian

Bellepoint member (of Columbus

limestone) * 

Columbus limestone 1 

Delaware limestone 1 

Delhi limestone 1

United States Continued 

Ohio Continued

Middle Devonian Continued

Dublin blue shale 1

East Liberty bone bed (in 

Columbus formation) 2

Eversole chert 1

Klondike member (of Columbus 

limestone) >

Marble Cliff limestone (in Columbus limestone) 1

Marblehead limestone (in Columbus limestone) 1

Plum Brook shale 2

Plum Creek shale l

Prout limestone 1

Prout series '

Sandusky limestone l

Silica shale (in Traverse formation)!

Sylvania sandstone 1 or formation

Tenmile Creek dolomite 2

Venice member (of Columbus 

limestone)'

West Jefferson sandstone l 

Lower Devonian

Austinburg sand 1 (subsurface)

Cambridge sand * (subsurface)

Holland sandstone 1

Lucas formation (as dolomite ')

Monclova sandstone 1 

Silurian

Beavertown marl (in Brassfield 

limestone) 1

Harriett formation 2

t Montgomery formation 1

Stadler sand 1 (subsurface) 

SUunan(f)

Hillsboro sandstone 1 

Upper Silurian

Bass Islands dolomite l

Greenfield dolomite 1 member 

(of Bass Island dolomite)

Put-in-Bay dolomite member (of 

Bass Island dolomite) 1

Tymochtee formation (as shale x) 

Middle Silurian

Bisher formation 1

Cedarville dolomite (as limestone !)

Dayton limestone l

Durbin formation l

Eaton beds 1

Euphemia dolomite 1

Lilley formation 1

Massie clay 1

Newburg sand x (subsurface)

Peebles dolomite *

Piqua stone 1

Springfield limestone l or dolomite

West Union limestone 1 

Lower Silurian

Centerville formation 1
522 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Ohio Continued 

Upper Ordovician 

Arnheim shale ! ; formation in 

Kentucky; limestone in Tennessee 

Bellevue limestone member (of

McMillan formation) l 

Blanchester division (in Richmond group) 1 

Cincinnatian series 1 

Clarksville division (in Richmond

group) 1

Corryville shale member (of McMillan formation) 1 

fCovington group * 

Eden group : or formation 

Fairmont limestone member (of

Fairview formation) l 

Fairview formation 1 

Fort Ancient division (in Richmond group) 1 

Fulton shale 1 

fHill Quarry beds 1 

tLebanon beds 1 

McMicken member (in Latonia

shale) 1

McMillan formation 1 

Mount Auburn shale member (of

McMillan formation) l 

Mount Hope shale member (of

Fairview formation) l 

Point Pleasant limestone 1 

Turkey Track limestone layer (in

Richmond group) 1 

Waynesville shale 1 ; limestone

in Kentucky 

t Warren beds 1 

Upper Ordovician(?)

Belfast bed l 

Middle Ordovician

Bromley shale (in Cynthiana

formation) J (see p. 622) 

fRiver Quarry beds 1 

Oklahoma 

Quaternary (?)

fPeaceable sand l 

Pleistocene

Gerty sand 1 

Tertiary

Black Mesa basalt 1 

Tertiary(f)

fFort Sill series » 

Pliocene or Pleistocene

Grandfield conglomerate 1 

Pliocene, lower

Laverne formation 1 

Upper Cretaceous

fSilo sandstone 1 

Lower and Upper Cretaceous

Washita group 1 

Lower Cretaceous 

t Antlers sand 1 

Baum limestone member (of

Paluxy sand) 2 

Bennington limestone 2

United States Continued 

Oklahoma Continued

Lower Cretaceous Continued

Bokchitp formation 1

Caddo limestone 1

Camp Supply beds 1

Comet CreeK bed l

Good!and limestone l

flndian Territory division 1

Eiamichi formation 1 

Upper Jurassic

Exeter sandstone 1 

Triassic(?)

Custer formation 1 

Permian

Addington formation 1

Altona dolomite member (of 

Blaine gypsum) >

fAmphitheater dolomite 1

Antelope Flats member (of Wellington formation) 2

Anthony sandstone 2

Antioch sandstone * Asher formation 1

Auger conglomerate lentil (of 

Wichita formation) 1

Beaver gypsum 1

Bessie member (of Quartermaster 

formation) 1

Billings member (of Wellington 

formation) 2

Bison banded member * (of Hennessey shale)

Blackwell sand x (subsurface)

Blaine gypsum or formation 1

Bu-Vi-Bar bed »

Caddo sand x (subsurface)

Cedartop gypsum member (of 

Blaine gypsum) 1

Chaney gypsum member (of 

Blaine gypsum) 1

Chapman dolomite 1

Chickasha formation 1

Cimarron anhydrite 2

Cloud Chief formation (as gypsum x)

Cornish sandstone member 1

Greta dolomite (in Blaine formation) 1

Grouse limestone or formation 

(as member of Garrison shale x)

fCushing limestone member (of 

Elmdale formation) 1

fCyril gypsum member r (of 

Greer formation)

fDelphi dolomite 1

Doe Creek sandstone member 

(of Marlow formation) 2

Doxey member (of Quartermaster formation) 1

Duncan sandstone 1

Elk City member (of Quartermaster formation) 1

El Reno group (as formation x)

Enid formation 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 523

United States Continued 

Oklahoma Continued 

Permian Continued

Evansyille sandstone beds (in 

Wellington formation) 1

Fairmont shale member (of Hennessey shale) *

Fallis sandstone member (of 

Wellington formation) 1

Ferguson gypsum member (of 

Blaine gypsum) 2

Foraker limestone 1 ; fmember (of 

Sand Creek formation) *

Fortuna sand * (subsurface)

Garber sandstone 1

Garvin beds *

fGlass Mountain formation *

fGreenfield dolomite (in Whitehorse sandstone) 1

fGreer formation *

Hart limestone member (of Stratford formation 1 and Wichita 

formation)

Haskew gypsum member (of 

Blaine formation) *

Haystack gypsum member (of 

Blaine formation) *

Hayward sandstone member 1 (of 

Garber sandstone)

Hennessey shale 1

Hoy sand 1 (subsurface)

Iconium member (of Wellington 

formation) *

Jester dolomite (in Blaine formation) 1

Jester sand * (subsurface)

t Kingfisher formation 1

Kiser gypsum member (of Blaine 

gypsum) »

Kisner sand 1 (subsurface)

fLone Wolf sandstone l

Lovedale gypsum member (of 

Blaine formation) J

Lowrie sandstone bed (in Wellington formation) !

Lucien shale member J (of Garber 

sandstone)

McCann sandstone 1

Magpie dolomite member (of 

Blaine gypsum) 1

Mangum dolomite member (of 

Blaine gypsum) 1

Marlow formation 1

Mauldin beds 1 (subsurface)

Midco (lacustrine) member (of 

Wellington formation) 2

Minco division 2

Newkirk limestone 1

Nicholas sand 1 (subsurface)

fNorman division *

Oklahoma series *

Old Crow gypsum *

One Horse gypsum 1

Otoe redbed member (of Wellington formation) 2

United States Continued 

Oklahoma Continued 

Permian Continued

Patsy gas sand ' (subsurface)

Payne sandstone *

Piedmont sandstone 2

Post Oak conglomerate member 

(of Wichita formation) 2

Propserity sand * (subsurface)

Pure ell sandstone lenses (in Hennessey shale) 1

Quartermaster dolomite (in Quartermaster formation) * Quartermaster formation 1

Red Eagle limestone (as member 

of Elmdale formation *)

fRed Eagle shale (in Elmdale 

formation) *

Reeding sandstone 2

Relay Creek dolomite 1 beds (in 

Marlow formation)

Rush Springs sandstone or formation (as member of Whitehorse 

sandstone *)

Salt Creek marble (in Blaine fornation) l

fSand Creek formation 1

Stillwater formation *

Stony Hills formation 1

Stratford formation 1

fTable Mountain sandstone 1

Taloga formation 1

Uncas shale 1

Verden sandstone 1 member (of 

Marlow formation)

Wanette division 2

Weatherford member (of Cloud 

Chief formation); (as dolomite *)

Whitehorse sandstone * or group

Whitney sand * (subsurface)

Wildhorse sandstone 1

Wilson sand 1 (subsurface)

fWoodward group 1 

Permian(?)

Konawa formation 1

Newberry sand * (subsurface)

orman sandstone * 

Pennsylvanian or Permian

Miller sand 1 (subsurface)

Nigh sand 1 (subsurface) 

Pennsylvanian and Permian

fHominy formation *

Ralston group * 

Pennsylvanian and Permian(f)

Pontotoc group 1 

Pennsylvanian

fAkins shale member x (of 

Winslow formation)

Atlantic oil sand * (subsurface)

Belveal sand * (subsurface)

Bennett oil sand x (subsurface)

Berwyn conglomerate 1

Billings sand * (subsurface)

fBristow formation 1

Brunner sand * (subsurface)
524 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Oklahoma Continued 

Pennsylvanian Continued 

Buckhorn asphalt 2 

Bull Creek limestone 1 

Burgess sand x (subsurface) 

Campbell sand x (subsurface) 

Cantrell sand x (subsurface) 

Carmichael sand x (subsurface) 

fChandler formation 1 

Claypool formation 1 

Cleveland sand 1 (subsurface) 

Colbert sand * (subsurface) 

Cosden sand x (subsurface) 

Covington sand * (subsurface) 

Crews sand ' (subsurface) 

Dillard sand x (subsurface) 

Dixie sand 1 (subsurface) 

Earlsboro sand 1 (subsurface) 

Endicott sand series > (subsurface)

Flat-top sandstone 1 

Gilcrease sand 1 (subsurface) 

fGlenn formation J 

Graham oil sand 1 (subsurface) 

Grayhorse sand x (subsurface) 

Hallett sand x (subsurface) 

Hamilton Switch sand x (subsurface)

Harjo sand * (subsurface) 

Healdton sand zone 1 (subsurface) 

Hewitt sand x (subsurface) 

Hickman sand x (subsurface) 

Holland sand x (subsurface) 

Hominy lime x (subsurface) 

Hoover sand series * (subsurface) 

Hotson sand 1 (subsurface) 

Jackson sand 1 (subsurface) 

Johnson oil and gas sand 1

(subsurface)

Kelso sand x (subsurface) 

Ketchum Bluff conglomerate 1 

Keys sand x (subsurface) 

Kirk gas sand J (subsurface) 

Layton sand x (subsurface) 

McEwin sand x (subsurface) 

Markham sand » (subsurface) 

Mervine sand l (subsurface) 

Morris sand x (subsurface) 

Moyer gas sands * (subsurface) 

Muskogee lime * (subsurface) 

fMusselman sand l (subsurface) 

fNelagoney sandstone 1 

Nellie gas sand x (subsurface) 

Nemire sand 1 (subsurface) 

Newkirk sand * (subsurface) 

fOchelata member x (of Ramona

formation)

fOil City lime * (subsurface) 

Oscar sandstone 1 

Papoose sand x (subsurface) 

Pawhuska series x (subsurface) 

Peoples sand 1 (subsurface) 

Ferryman sand 1 (subsurface) 

Peru sand x (subsurface) 

Ponca sand x (subsurface)

United States Continued 

Oklahoma Continued

Pennsylvanian Continued 

Priddy sand l (subsurface) 

Prune sand 1 (subsurface) 

Quinn sand 1 (subsurface) 

Ragan sand 1 (subsurface) 

fRamona formation * 

Ramsey sand x (subsurface) 

Red Fork sand x (subsurface) 

Richter sand 1 (subsurface) 

Ricketts oil sand x (subsurface) 

Ryan sandstone * 

fSapulpa group l 

Shelton sand x (subsurface) 

Sholem Alechem limestone 1 (subsurface)

Skinner sand x (subsurface) 

Smith sand 1 (subsurface) 

Squirrel sand 1 (subsurface) 

Standpipe sandstone (in Elmdale

formation) 1

Suitcase sand x (subsurface) 

Surber sand 1 (subsurface) 

Sutherland oil sand 1 (subsurface) 

Swaggart sand * (subsurface) 

Swenson sand 1 (subsurface) 

Tatums sand x (subsurface) 

fTiger Creek sandstone member

(of Bristow formation) 1 

Timber Ridge sand x (subsurface) 

Ti Valley series 2 

Tonkawa sand x (subsurface) 

fTulsa group 1 

Turk sand x (subsurface) 

fVinita formation 1 

Walker sand 1 (subsurface) 

Wayside sand x (subsurface) 

Wheeler lime 1 (subsurface) 

Wheeler sand 1 (subsurface) 

Whiting sand x (subsurface) 

Wigdon sand J (subsurface) 

Wiser sand 1 (subsurface) 

Zypsie sand l (subsurface) 

Pennsylvanian (?)

Blaydes sand l (subsurface) 

Brown sand l (subsurface) 

fGeronimo series l 

Hogshooter sand l (subsurface) 

Kagey sand 1 (subsurface) 

Lyons limestone 1 (subsurface) 

Maloney sand x (subsurface) 

Meadows sand 1 (subsurface) 

Pawnee limestone 1 

Thomas sand x (subsurface) 

Vann sand x (subsurface) 

Pennsylvanian (Virgil) 

Ada formation 1

Bird Creek limestone (as member of Buck Creek formation x ) 

Boley conglomerate member (of

Vamoosa formation) 2 

Bowhan sandstone member (of 

Vamoosa formation); (as member of Nelagoney formation L) 

fBuck Creek formation 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 525

United States Continued 

Oklahoma Continued

Pennsylvanian (Virgil) Con.

Cheshewalla sandstone member 

(of Vamoosa formation), (as 

member of Nelagoney formation !)

Cochahee sandstone member 

(of Vamoosa formation); (as 

member of Nelagoney formation !)

Collings Ranch conglomerate 2

fFourmile sandstone member (of 

Nelagoney formation) 1

Grayhorse limestone member 

(of Vanoss formation); member (of Wood Siding formation 

in Kansas); (as member of 

Sand Creek formation x )

Labadie limestone member (of 

Vamoosa formation); (as member of Nelagoney formation x )

Little Hominy limestone member 

(of Pawhuska limestone) 1

fNelagoney formation 1

Okay limestone lentil (of Pawhuska formation) 1

Pawhuska limestone or formation 1

Plummer limestone member (of 

Pawhuska formation) 1

Rock Creek limestone (in Nelagoney formation) 1

fStonebreaker limestone member (of Buck Creek formation) 1

Turkey Run limestone member 

(of Pawhuska formation); (as 

member of Buck Creek formation !)

Vamoosa formation 1

Vanoss formation :

Wildhorse limestone (in Nelagoney formation) 1

Wynona sandstone member (of 

Vamoosa formation); (as member of Nelagoney formation *) 

Pennsylvanian (Missouri)

Anadarche conglomerate (in Hoxbar formation) 1

Anadarche limestone (in Hoxbar 

formation) 1

Anadarche member (of Hoxbar 

formation) 1

Avant limestone member (of 

lola limestone); (as member 

of Ochelata formation x )

Barnsdall formation 2

Belle City limestone 1

Bigheart sandstone member (of 

Tallant formation); (as member of Nelagoney formation x )

Birch Creek limestone member 

(of Barnsdall formation); (as 

bed in Ochelata formation x )

jBuck Point sandstone member 

(of Nelagoney formation) 1

United States Continued 

Oklahoma Continued

Pennsylvanian (Missouri) Con.

Checkerboard limestone (as 

member of Coffeyville formation 0

Clem Creek sandstone tongue 

(of Wann formation); (as member of Ochelata formation x )

Confederate limestone member 

(of Hoxbar formation) 1

fCopan formation 1

Crinerville limestone member (of 

Hoxbar formation) 1

Daube member (of Hoxbar 

formation) 1

DeNay limestone member (of 

Francis formation) 1

Dewey limestone 1

Francis formation * Gap sandstone member (of Tallant formation); (as member 

of Nelagoney formation x )

Hay Hollow sandstone lentil 

(of Tallant formation); (as 

member of Nelagoney formation J)

Hilltop formation 2

Hogshooter limestone " Hoxbar formation *

fHulah sandstone member (of 

Nelagoney formation) 1

fLost City limestone 1

Mission sandstone member (of 

Tallant formation); (as member of Nelagoney formation) 1

Nellie BIy formation * Ochelata group (as formation !)

Okesa sandstone member (of 

Barnsdall formation); (as 

member of Ochelata formation i)

t Panther Creek limestone member (of Ochelata formation) 1

Possum sandstone tongue (of 

Revard sandstone member of 

Tallant formation); (as member of Nelagoney formation J)

Revard sandstone member (of 

Tallant formation); (as member of Nelagoney formation x )

Seminole conglomerate 1 or formation

Skiatook group (as shale x)

Tallant formation 2

Torpedo sandstone (as member 

of Ochelata formation x)

Union Dairy member (of Hoxbar 

formation) 1

Wann formation l

Westheimer member (of Hoxbar 

formation) 1

Zuckerman limestone member (of 

Hoxbar formation) x
526 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Oklahoma Continued 

Middle Pennsylvanian

Bad Hole sand x (subsurface) 

Barnett sand l (subsurface) 

Bartlesville sand x (subsurface) 

Bixier sand x (subsurface) 

Booch sand x (subsurface) 

Boynton sand 1 (subsurface) 

Burbank sand 1 (subsurface) 

Daggett sand x (subsurface) 

Butcher sand series x (subsurface) 

Fields sand 1 (subsurface) 

Glenn sand * (subsurface) 

Independence gas sand 1 (subsurface)

Leidecker sand * (subsurface) 

Mounds sand 1 (subsurface) 

Oklan series 2

Preston sand 1 (subsurface) 

Rhodes sand x (subsurface) 

Sapulpa sand x (subsurface) 

Scott sand l (subsurface) 

Squaw sand x (subsurface) 

Taneha sand * (subsurface) 

Tucker sand x (subsurface) 

Youngstown sand x (subsurface) 

Pennsylvanian (Des Moines)

Arnold member (of Deese formation)!

Bluejacket sandstone member 

(of Cherokee shale and of 

Boggy shale) 1 

Boggy shale '

fBroken Arrow formation 1 

Cabaniss group 2 

Calvin sandstone 1 

Cameron sandstone member (of

McAlester shale) 1 

fCavanal group * 

Chelsea sandstone member (of 

Senora formation); (as lentil of 

Cherokee formation l) 

tClaremore formation 1 

Craig shale 1 

Crekola sandstone member (of

Boggy shale) 1 

fCurl formation 

Deese formation 1 

Devils Kitchen member (of Deese

formation) l 

Doneley limestone member (of

Savanna formation) 2 

Drywood formation or coal

cycle 2 (see p. 622) 

Eleventh Street limestone 2 

Elm Creek limestone (in Cherokee shale) 1 

fEnterprise sandstone (in Boggy

shale) 1

t Franks conglomerate 1 

Hartshorne sandstone l 

Holdenville shale 1 

Hollis limestone member (of 

Deese formation) 2

United States Continued 

Oklahoma Continued

Pennsylvanian (Des Moines) Con.

Homer limestone member (of 

Holdenville shale) 1

Inola limestone member (of 

Boggy shale) 1

Jolly limestone member (of Savanna sandstone) *

Eeota sandstone member (of 

McAlester formation); (as 

member of Savanna sandstone x)

Kennison shale member (of Cherokee formation) 1

Erebs group 2

Lenapah limestone 1

Lequire sandstone member (of 

McAlester formation) 1

Little Cabin sandstone member 

(of Cherokee formation) 1

McAlester formation or shale 1

McCurtain shale member (of 

McAlester formation) 1

McNabb limestone (in Senora 

formation) 2

fNarcissa sandstone (in Cherokee 

shale) 1

Natsy member (of Deese formation) 2

Nowata shale 1

Okmulgee group 1

Olympic sand member (of Senora 

formation) 2 (subsurface)

Oologah limestone 1

fPoteau stage 1

Pryor Creek shale (in Cherokee 

shale) 1

Rocky Point conglomerate (in 

Deese formation) 2

Russell Creek limestone member 

(of Senora formation) 2

Sam Creek limestone member (of 

Savanna sandstone) 1

Sasakwa limestone member (of 

Holdenville shale) 1

Savanna sandstone 1 or formation

Senora formation 1

Spaniard limestone member (of 

Savanna sandstone) 1

fSpiro sandstone member (of 

Savanna formation) l

Stuart shale *

Taft sandstone member (of Boggy 

shale) 1

Tamaha sandstone member (of 

McAlester formation); (as 

member of Savanna sandstone) *

Thurman sandstone l

Tiawah lime 1

fTobucksy sandstone 1

Verdigris limestone x (member of 

Senora formation); (as limestone in Cherokee formation) 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 527

United States Continued 

Oklahoma Continued

Pennsylvanian (Des Moines) Con. 

Warner sandstone member (of

McAlester formation) 1 

Wetumka shale 1 

Wewoka formation l 

Wilburton group 1 

Williams member (of Deese formation) 2 

Wimer School limestone member

(of Labette shale) 2 

Pennsylvanian (Atoka)

Atoka formation * or series 

Blackjack School sandstone

member (of Atoka formation) 1 

Chickachoc chert (as lentil of

Atoka formation) * 

fCoata sandstone member (of

Atoka formation) 1 

Goody sandstone member (of

Atoka formation) 1 

Dirty Creek sandstone member

(of Atoka formation) l 

Dornick Hills formation 1 (may be

Morrow in part) 

Georges Fork sandstone member

(of Atoka formation) l 

Moore formation 2 (subsurface) 

Muskogee sand 1 (subsurface) 

Pope Chapel sandstone member

(of Atoka formation) 1 

Webbers Falls sandstone member (of Atoka formation) 1 

Lower Pennsylvanian 

Ardian series 2 

Big Branch formation 1 

Bostwick member (of Dornick

Hills formation) 1 

Chickasaw Creek formation 2 

Cromwell sand x (subsurface) 

Frensley limestone 2 

Jolliff limestone member (of

Dornick Hills formation) l 

Lester limestone member (of

Dornick Hills formation) l 

Markham Mill formation 2 

Moyers formation 2 

t Muskogee group 1 

Otterville limestone member (of

Dornick Hills formation) 1 

Prairie Mountain formation 2 

Pumpkin Creek limestone member

(of Dornick Hills formation) 1 

Pushmataha series 2 

Sykes sand 1 (subsurface) 

Tenmile Creek formation 2 

Union Valley sandstone member

(of Wapanucka formation) 1 

Wesley formation 2 

Wildhorse Mountain formation 2 

Pennsylvanian (Morrow) 

Barnett Hill formation 2 

Castle Rock sandstone (in

Springer formation) 1

United States Continued 

Oklahoma Continued

Pennsylvanian (Morrow) Con.

City Lake sandstone member (of 

Springer formation) 1

Goddard shale member (of 

Springer formation) 2

Jackfork sandstone 1

Johns Valley shale '

Lake Ardmore sandstone member 

(of Springer formation) 1

Limestone Gap shale 2

Overbrook sandstone member (of 

Springer formation) l

Primrose sandstone member (of 

Springer formation) l

Rod Club sandstone member (of 

Springer formation) 1

Round Prairie formation 2

Springer formation 1 or shale

Stapp conglomerate member (of 

Union Valley formation) 2

Target limestone member (of 

Springer formation) 2

Wapanucka limestone 1 

Mississippian and Pennsylvanian

Stanley shale 1 

Mississippian

Ingraham gas sand 1 (subsurface)

Jefferson gas sand 1 (subsurface)

Lincolnville chert (in Boone 

limestone) 1

Mayes formation 1

Prairie Hollow member (of Prairie 

Mountain formation) 2

Quapaw chert 1

t Smithville chert lentil (in Stanley shale) J

Tuskahoma siliceous shale member (of Stanley formation) 2

Welden limestone 1 

Upper Mississippian or Lower 

Pennsylvanian

Deaner sand 1 (subsurface)

Kingwood sand 1 (subsurface)

Lyons sand x (subsurface) 

Upper Mississippian

Albion formation 2

Caney shale 1

Grand River limestone 2 

Lower Mississippian

Misener sand J (subsurface)

Sycamore limestone 1 

Devonian and Mississippian

Woodford chert ' or shale 

Devonian (f)

Marland sand 1 (subsurface)

Mollie Miller sand x (subsurface) 

Middle Devonian

fBrushy Creek chert 1 

Lower or Middle Devonian

Pinetop chert 1

Sallisaw formation (as sandstone x)
528 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Oklahoma Contin ued 

Lower Devonian

Bois d'Arc limestone l

Cravatt formation 2

Frisco limestone '

Haragan shale l or limestone

Kite group 2 

Silurian and Devonian

Hunton limestone 1 or group 

Silurian

Chimneyhill limestone 1

Henryhouse shale ' or limestone

Sallisaw marble 1 

Lower Silurian

Cochrane limestone member (of 

Chimneyhill formation) 2

Dillard limestone member (of 

Chimneyhill formation) 2

Hawkins limestone member (of 

Chimneyhill formation) 2

Keel limestone member (of Chimneyhill formation) 2 

Ordovician, Silurian, and Devonian

fTalihina chert 1 

Ordovician

Ada limestone 2

Alden limestone 1

Cool Creek formation l

Detrick sand 1 (subsurface)

Dunlap sand l (subsurface)

Fite limestone 1

Hammar-Haindl limestone 1 (subsurface)

Hoopes sand > (subsurface)

Irish sand 1 (subsurface)

Johnson sand l (subsurface)

Kinter sand J (subsurface)

Lowery sand 1 (subsurface)

Marshall green-shale zone 1 (subsurface)

Mollman sand l (subsurface)

Mose Carr sand 1 (subsurface)

Olds sand 1 (subsurface)

Patterson Ranch group 2

Pugh sand 1 (subsurface)

School Land sandstone 1 (subsurface)

Seminole sand member (of Simpson formation) *

Simons sand 1 (subsurface)

Stamper zone 1 (subsurface)

Webster formation 1

Wilcox sand 1 (subsurface)

Wolf Creek dolomite 1 

Upper Ordovician

Sylvan shale 1 

Middle and Upper Ordovician

Tyner formation l

Viola limestone 1 

Middle Ordovician

Bromide formation 1

Criner formation 1

Joins formation 1

McLish formation 1

Oil Creek formation 1

United States Continued 

Oklahoma Continued

Middle Ordovician Continued

Simpson group 1

Tulip Creek formation 1

West Spring Creek formation 1 

Lower or Middle Ordovician

Burgen sandstone 1 

Lower and Middle(?) Ordovician

fStringtown shale 1 

Lower Ordovician

Burgen limestone 1

Chapman Ranch formation l

Falls formation 1

fFalls Creek formation 1

Joins Ranch formation 1

Eindblade formation 2

McKenzie Hill limestone 1 or 

formation

McMichel member (of McKenzie 

Hill formation) 2

fNebo J (formation)

Rainy Mountain limestone 1

Strange formation 2 

Lower (?) Ordovician

Hominy sand * (subsurface) 

Cambrian

Blue Creek series >

Blue Creek Canyon group 2 

Cambrian(?)

Lukfata sandstone formation 2 

Upper Cambrian and Lower Ordovician

Arbuckle limestone l or group l

Turkey Mountain lime x (subsurface) 

Upper Cambrian

Butterly dolomite 2

Fort Sill limestone (as formation i)

Honey Creek formation (as limestone x)

Reagan sandstone '

Royer marble 1

Signal Mountain formation l

Timbered Hills group 1 

Precambrian

Carlton granophyre 1

Carlton porphyry '

Colbert porphyry 1

Cold Springs granite *

Davidson granophyre 1

Headquarters granite *

Lugert granite 1

Meers quartzite 1

Quanah granite l

Raggedy Mountain gabbro 1

Reformatory granite 1

Saddle Mountain porphyry '

Tepee Creek formation 2

Tishomingo granite 1

Troy granite 1 

Precambrian(f)

Spavinaw granite 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 529

United States Continued 

Oregon 

Quaternary

Wineglass welded tuff 2 

Recent

Alkali formation >

Malheur formation 1

Summer formation 1 

Recent(?)

Crooked River formation 1 

Pleistocene

Cascades formation 1

Cascan formation 2

Chewaucan formation J

Clackamas gravels 2

Coquille formation 2

Fossil Lake formation 1

Herman Creek lava 1

Lacomb gravels 2

Leffler gravels 2

Linn gravels 2

Llano de Oro formation 1

Newport formation 1

Olallie lavas 2

Portland delta gravels 1

Rocky Butte volcanics 2

Santiam basalts 2

Tualatin terrace gravels 2

Wildhorse formation * Willamette silt 2 

Pleistocene, upper, or Recent

Diamond formation 1 

Pleistocene, upper

Elk River beds ' 

Tertiary

Dorena welded tuff 2 

Tertiary, upper, and Pleistocene

Arlington lake beds 1

Shutler formation ' 

Tertiary, upper

Black Crater formation 1

Little Alvord Creek rhyolite J 

Tertiary, upper(f)

Fern Ridge tuffs 1 

Pliocene and Pleistocene

Battle Ax basalts 2

Minto basalts 2

Mount Hood lavas 2

Rattlesnake formation 1 

Pliocene

Coos conglomerate '

Dalles formation 1

Danforth formation 1

jDeschutes formation 1

Ironside beds 1

Madras formation 1

Molalla formation 2

Mount Jefferson formation 1

Outerson basalts 2

fPelton basalt member (of Deschutes formation) 1

Silver Lake group 1

Steens Mountain formation *

Troutdale formation 1

Underwood Mountain lava 2

Yakima group 1

United States Continued 

Oregon Continued 

Pliocene(f)

Empire formation 1

Harney formation 1 

Pliocene, upper, or Pleistocene, lower

Boring agglomerate 2

Boring lava 2

Portland Hills silt member (of

Troutdale formation) 2 

Pliocene, middle

Port Orford formation 8

Steens basalt 1 

Pliocene, lower

Alvord Creek formation (as 

beds i)

Pike Creek volcanic series 1

Steens Mountain volcanic series

(as andesitic series *) 

Miocene and Pliocene(f)

Grassy Mountain basalt 1 

Miocene and Oligocene(?)

t Oregon beds * 

Miocene

fAstoria group 1

fAstoria sandstone 1

Blackjack basalt 1

fCape Blanco beds 1

Columbia River basalt 1

Coriba formation 1

Cottonwood beds 1

Glass Buttes series 1

Owyhee basalt 1

Sardine series 2

Stayton lavas 1

Willamette group 1 

Miocene(?)

Dooley rhyolite breccia 1 

Miocene, upper, or Pliocene

Hood River conglomerate 1 

Miocene, upper

Mascall formation 1 

Miocene, middle or upper

Halls diorite porphyry 2

Rhododendron formation 1 

Miocene, middle

Astoria formation (as shale x )

Trout Creek formation 1 

Miocene, lower

Alvord formation 1

Nye mudstone (as shale x) 

Oligocene and Miocene(f)

Cascadia formation 1 

Oligocene

Eugene formation 1

Illaho formation 1

Mehama volcanics 1

t Oakland limestone 1

Pittsburg Bluff formation (as

sandstone x) 

Oligocene to Eocene(?)

Breitenbush series 2 

Oligocene, upper, or Miocene, lower

Bridge Creek shale 1

Butte Creek beds 2

fWarrendale formation x
530 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Oregon Continued

Oligocene, upper, to Miocene, lower

Scio beds 2 

Oligocene, upper

Rocky Point beds 2

Scappoose formation 2

Yaquina sandstone (as formation i)

Oligocene, middle and upper, and 

Miocene

John Day formation 1 

Oligocene, middle

Tunnel Point sandstone (

beds x) 

Eocene

Arago group l

Clarno formation l

Comstock formation 2

Helmick formation 2

Lorane shale member (of Spencer 

formation) 2

fPulaski formation 1

Spencer formation 1

Tillamook volcanic series 2

Tyee sandstone 1 or formation

Wilbur tuff lentils l

Yamhill formation 2 

Eocene (?)

Coyote formation 1

Trail Crossing basalt 1

Wagontire formation 1 

Eocene, upper, to Miocene, lower

Western Cascade volcanic series 2 

Eocene, upper, and Oligocene, lower

Bastendorff shale (as Bassendorf 

shale *)

Calapooya formation 1

Fisher formation 1

Keasey shale 1 or formation

Nehalem formation 2

Toledo formation 1 

Eocene, upper

Coaledo formation 1

Goble volcanic series 2

Moody shale member (of Toledo 

formation) 1

Nestucca formation 2 

Eocene, middle

Burpee formation 1

Coffin Butte volcanics 2 

Eocene, lower

Kings Valley siltstone member 

(of Siletz River volcanic series) 2

Siletz River volcanic series 2

Umpqua formation 1 

Mesozoic or older

Pueblo formation l 

Cretaceous

Henley beds 1

Phoenix beds 1

Rogue River group 1 

Upper Cretaceous

Hornbrook formation 2

United States Continued 

Oregon Continued 

Lower Cretaceous

fDillard series 1

Whitsett limestone lentils (in

Myrtle formation) 1 

Pre-Cretaceous

Colebrooke schist 1 

Upper Jurassic and Lower Cretaceous

Myrtle group (as formation >) 

Jurassic(f)

Craggy gneiss 1 

Upper Jurassic

Dothan formation'

Galice formation 1

Rogue formation 2

Trowbridge shale 2 

Upper Jurassic(?)

Lonesome formation 2 

Middle Jurassic

Colpitts group 2

Hyde formation 2

Izee group 2

Snowshoe formation 2

Warm Springs formation 2

Weberg formation 2 

Lower Jurassic

Donovan formation 2

Mowich group 2

Nicely shale 2

Robertson formation 2

Silvies River beds 1

Suplee formation 2 

Post-Triassic (pre-Tertiary)

Haines granite 1 

Triassic(?)

Applegate group 2

Huntington series 1 

Upper Triassic

fEagle Creek formation l

Hurwal formation 2

Martin Bridge formation 1 

Permian

Clover Creek greenstone 1

Coyote Butte formation 2 

Pre- Carboniferous (?)

Burnt River schist 1 

Pennsylvania^,

Spotted Ridge formation 2 

Pennsylvanian (?)

Elkhorn Ridge argillite 2 

Mississippian

Coflfee Creek formation l 

Devonian(?)

May Creek formation 1 or schist 

Precambrian

Bald Mountain gneiss J 

Pennsylvania 

Pleistocene

Allegany drift 1

Big Bend gravel 1

Clarendon gravel 1

Conewango clay 1

Indian Hollow sands 1
INDEX TO THE GEOLOGIC NAMEiS OP NORTH AMERICA 531

United States Continued 

Pennsylvania Continued 

Pleistocene Continued

Lake Monongahela deposits *

Philadelphia brick clay 1

Philadelphia red gravel 1

University gravel 1 

Pleistocene (Illinoian)

Carmichaels formation 1

fPacker clay * 

Tertiary(f)

Mont Alto lignite l 

Pliocene(f)

Branchtown clay *

Bryn Mawr gravel l 

Triassic

Robeson conglomerate *

South Valley limestone 1 

Triassic(f)

Spitzenberg conglomerate 1 

Upper Triassic

Arendtsville fanglomerate lentil 

(in Gettysburg shale) 1

Brunswick conglomerate * Conewago conglomerate member 

(of Gettysburg shale) (G. W. 

Stose and A. I. Jonas, 1939, 

Penn. Geol. Survey Bull. C-67, 

p. 107, 115, 118)

Conewago group 1

Elizabeth Furnace conglomerate 

member (of Gettysburg shale) 1

Gettysburg shale * Graters member (of Brunswick 

formation) 1

fGwynedd shale 1

Heidlersburg sandstone member 

(of Gettysburg shale) 1

Lansdale shale 1

fLewisburg group 1

t Lisbon group l

Manchester group 1

New Oxford formation 1

Norristown sandstone a

fNorristown shale l

Perkasie shale 1 member (of 

Brunswick formation)

fPhoenixville shale 1

Pottstown shale 1

Santatoga member (of Brunswick 

formation) 1

Smith Corner member (of Lockatong formation) 2 

Paleozoic

tAppalachian group or series 1 

Lower Paleozoic(f)

Marburg schist*

Peters Creek quartzite (as 

schist a )

Wissahickon schist 1 or formation 1

Permian (see also Pennsylvanian 

and Permian)

Blacksville limestone (in Washington formation) 1

Brier Hill sandstone *

804835 59 9

United States Continued 

Pennsylvania Continued 

Permian -Contin ued

Claysville limestone member (of 

Greene formation) l

Colvin limestone member (of 

Washington formation) l

Davistown sandstone 2

Donley limstone member (of 

Greene formation) a

Dunkard group l

Dunlap sandstone 2

Fish Creek sandstone member 

(of Greene formation) 1

Franklin limestone (in Washington formation) 1

Gilmore sandstone member (of 

Greene formation) a Greene formation 1

Jackson limestone (in Greene 

formation) 1

Jollytown limestone member (of 

Washington formation) l

Jollytown sandstone (in Washington formation) 1

Lower Washington limestone 

member (of Washington formation) 1

Martinsburg limestone (in Washington formation) a Middle Washington limestone 

member (of Washington formation) l

Mount Morris limestone member 

(of Washington formation) l

Nineveh limestone member (of 

Greene formation) 1

Nineveh sandstone member (of 

Greene formation) 1

Prosperity limestone member (of 

Greene formation) 1

Rogersville limestone (in Greene 

formation) 1

Taylor sandstone )in Greene 

formation) 1

Taylortown limestone (in Washington formation) a

Tenmile limestone (in Greene 

formation) 1

Upper Washington limestone 

member (of Washington formation) 1

Washington formation 1

Washington sandstone member 

(of Washington formation) a Waynesburg sandstone member 

(of Washington formation) 1

Windy Gap limestone member 

(of Greene formation) 1

Woodglen limestone 2 

Carboniferous (see also Devonian or 

Carboniferous)

Broad Top series a 

Pennsylvanian and Permian

fGreene County group 1

f Monongahela River coal series 1
532 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Pennsylvania Continued 

Pennsylvanian

Alto coal group (in Pottsville 

formation) 1

Bakerstown sandstone (in Conemaugh formation) 1

Barton group (in Conemaugh 

formation) 1

Beaver River formation l

Berlin group (in Conemaugh 

formation) 1

fBerlin limestone (in Conemaugh 

formation) *

Big Dunkard sand 1 (subsurface)

Blue Ball fire clay (in Allegheny 

formation) 1

Bolivar sandstone (in Allegheny 

formation) 1

Brookville clay (in Allegheny 

formation) 1

fBrowntown sandstone (in Monongahela formation) 1

Brush Creek clay or fire clay (in 

Conemaugh formation) 1

Brush Creek red bed (in Conemaugh formation) '

Brush Creek sandstone (in Conemaugh formation) 1

Buffalo formation (in Conemaugh 

formation) *

Buffalo shale (in Conemaugh 

formation) l

Campbells Ledge black slate (in 

Pottsville formation) 1

Canal limestone 1

Church Run conglomerate *

Clarion clay (in Allegheny formation) 1

t Clarion coal group (in Allegheny 

formation) l

Clermont group (in Allegheny 

formation) *

Clermont limestone (in Allegheny 

formation) *

Coleman limestone (in Conemaugh formation) *

fColorado conglomerate l

Connellsville member (of Conemaugh formation) 1

Connellsville red bed (in Conemaugh formation) 1

Darlington underclay (in Allegheny formation) 1

Dunkard sand 1 (subsurface)

Duquesne limestone (in Conemaugh formation) 1

fEbensburg sandstone member 

(of Conemaugh formation) l

Elk Lick clay 1

Fagundas conglomerate l

Fishpot limestone member (of 

Monongahela formation) 1

Foys limestone (in Allegheny 

formation) 1

Freeport clay l

United States Continued 

Pennsylvania Continued 

Pennsylvanian Continued

fFreeport coal group (in Allegheny formation) l

fFreeport limestone member (of 

Allegheny formation) 1

Freeport sandstone member (of 

Allegheny formation) * Gallitzin limestone (in Conemaugh formation) 1

fGarland conglomerate (in Pottsville formation) *

Gourd Head Run clay (in Conemaugh formation) 1

Gourdhead Run limestone (in 

Conemaugh formation) 1

Grafton formation l

Grafton member (of Conemaugh 

formation) 1

fGreat Bend conglomerate 1

Gurnee formation (in Pottsville 

formation) 1

Harshberger limestone (in Conemaugh formation) l

Hillman limestone *

Hurry-up sand l (subsurface)

Indian sand * (subsurface)

fJohnson Run sandstone (in 

Pottsville formation ) *

Johnstown iron ore (in Conemaugh formation) 1

Kane limestone (in Allegheny 

formation) 1

fKinzua Creek sandstone (in 

Pottsville formation) *

Kittanning coal group (in Allegheny formation) *

Kittanning fire clay (in Allegheny formation) 1

Kittanning shale (in Allegheny 

formation) 1

fLigonier sandstone l

Little Dunkard sand J (subsurface)

fLittle Pittsburg limestone (in 

Conemaugh formation) J

Little Pittsburg member (in 

Conemaugh formation) *

f Lower Freeport clay (in Allegheny formation) >

f Lower Freeport limestone member (of Allegheny formation) l

fLower Freeport sandstone (in 

Allegheny formation) l

fLower Kittanning limestone (in 

Allegheny formation) *

Lower Mercer fire clay (in Pottsville formation) *

Lower Mercer iron shales (in 

Pottsville formation) *

fLower Mercer limestone (in 

Pottsville formation) l

fLykens series * Mahoning fire clay (in Conemaugh formation) *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 533

United States Continued 

Pennsylvania Continued 

Pennsylvanian Continued

Mahoning formation J

Mahoning limestone (in Conemaugh formation) 1

Mahoning red bed (in Conemaugh formation) >

Marshburg slates or shale (in 

Pottsville formation) 1

Meadville monothem or stage 1

Mercer limestone (in Pottsville 

formation) 1

Meyersdale red shale (of Conemaugh formation) l

Middle Kittanning clay (in Allegheny formation) *

f Middle Mahoning sandstone (in 

Conemaugh formation) *

t Middle Mercer shales (in Pottsville formation) 1

Mill Creek limestone 1

Morgantown member (of Conemaugh formation) 1

Murphy sand * (subsurface)

New Galilee clay shale (in Conemaugh formation) 1

Niverton shale (in Conemaugh 

formation) 1

Philson limestone (in Conemaugh 

formation) 1

fPine Creek limestone member 

(of Conemaugh formation) 1

fPine Creek sandstone (in Allegheny formation) 1

fPittsburgh limestone (in Conemaugh formation) 1

Pittsburgh member (in Monongahela formation) J

Pittsburgh red beds, red shale, or 

Reds (in Conemaugh formation) »

Pittsburgh (Lower) sandstone (in 

Conemaugh formation) *

fPittsburgh series *

Powelton shale (in Allegheny 

formation) J

Quakertown fire clay (in Pottsville formation) 1

tQuakertown group (in Pottsville 

formation) 1

Quakertown shale (in Pottsville 

formation) 1

Redstone member (of Monongahela formation) 1

Saltsburg formation (in Conemaugh formation) l

Saltsburg member (of Monongahela formation) 1

Schenley red beds (in Conemaugh 

formation) l

Scranton sandstone (in Pottsville 

formation) >

Scrubgrass fire clay (in Allegheny 

formation) l

United States Continued 

Pennsylvania Continued 

Pennsylvanian Continued

fSewickley limestone (in Monongahela formation) 1

Sewickley member (in Monongahela formation) *

Shinersville conglomerate (in 

Pottsville formation) 1

fSummit limestone (in Conemaugh formation) 1

fSummit series (in Allegheny 

formation) 1

fTionesta group (in Pottsville 

formation) 1

Tionesta iron shales (in Pottsville 

formation) 1

fTionesta sandstone (in Pottsville formation) '

Tionesta series *

Triumph conglomerate l

Uniontown member (of Monongahela formation) 1

t Upper Freeport clay (in Allegheny formation) 1

t Upper Freeport limestone member (of Allegheny formation) 1

fUpper Kittanning limestone (in 

Allegheny formation) *

fUpper Mahoning sandstone (in 

Conemaugh formation) l

Upper Mercer iron shales (in 

Pottsville formation) *

t Upper Mercer limestone (in 

Pottsville formation) *

f Washington reds (in Conemaugh 

formation) l

Waynesburg clay J

Waynesburg member (in Monongahela formation) l

Wehbum flint clay l

Wellersburg clay (in Conemaugh 

formation) 1

Woods Run limestone (in Conemaugh formation) 1

Wurtemburg limestone (in Pottsville formation) J

Wurtemburg sandstone (in Pottsville formation) * Wyoming Valley limestone beds 1 

Upper Pennsylvanian

Birmingham shale member (of 

Conemaugh formation) 1

Brush Creek limestone member 

(of Conemaugh formation) 1 ; 

shale member in Ohio

Buffalo sandstone member (of 

Conemaugh formation) 1

Bulger limestone bed (in Monongahela formation) l

Conemaugh formation 1

Connellsville sandstone member 

(of Conemaugh formation) 1

Dinsmore limestone bed (in 

Monongahela formation) :
534 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Pennsy Iv ania Continued

Upper Pennsiilvanian Continued 

Elk Lick limestone member (of

Conemaugh formation) l 

Lower Pittsburgh limestone

member (of Conemaugh formation) 1 

Mahoning sandstone member (of

Conemaugh formation) l 

Monongahela formation l 

Pittsburgh sandstone member

(of Monongahela formation) 1 

Bedstone limestone member (of

Monongahela formation) 1 

Saltsburg sandstone member (of

Conemaugh formation) 1 

Sewickley sandstone member

(of Monongahela formation) 1 

Summerhill sandstone member

(of Conemaugh formation) 1 

Uniontown limestone member

(of Monongahela formation) 1 

Uniontown sandstone member

(of Monongahela formation) l 

Upper Pittsburgh limestone member (of Conemaugh formation) J 

Waynesburg limestone member

(of Monongahela formation) 1 

Wilmore sandstone member (of

Conemaugh formation) 1 

Middle Pennsylvanian 

Allegheny formation 1 

Bolivar fire clay (in Allegheny

formation) 1 

Butler sandstone member (of

Allegheny formation) 1 

Clarion sandstone member (of

Allegheny formation) 1 

Homewood sandstone member

(of Pottsville formation) 1 

Johnstown limestone member

(of Allegheny formation) 1 

Eittanning sandstone member (of

Allegheny formation) l 

Llanfair sandstone member (of

Allegheny formation) l 

Lower Clarion clay (in Allegheny

formation) l

Lower Kittanning clay (in Allegheny formation) 1 

Mercer shale member (of Pottsville formation) 1 

Upper Clarion clay (in Allegheny

formation) l

Upper Kittanning clay 1 

Vanport limestone member (of

Allegheny formation) 1 

Worthington sandstone member

(of Allegheny formation) x 

Lower and Middle Pennsylvanian 

Pottsville formation or group 1 

Lower Pennsylvanian 

Connoquenessing sandstone

member (of Pottsville

formation) l

United States Continued 

Pennsylvania Continued

Lower Pennsylvanian Continued 

Sharon conglomerate member

(of Pottsville formation) 1 

Sharon shale member (of Pottsville formation) * Mississippian and Pennsylvanian 

f Allegheny River coal series l 

fShenango series * 

Mississippian (see also Devonian 

or Mississippian; Upper Devonian and Mississippian; and 

Upper Devonian or Mississippian)

t Allegheny group 1 

Bartholomew siltstone member

(of Orangeville shale) J 

Benezette limestone member (of

Pocono formation) 1 

Big Injun group l (subsurface) 

Bitter Rock sand 1 (subsurface) 

Burgoon group 1 

Burgoon sandstone member (of

Pocono formation) 1 

Byham limestone member * 

Cameron red shale member l 

Carl sandstone member (ofShenango formation) 2 

fConneaut limestone member 1 

Corry sandstone 1 

Crawford series or subseries * 

Cussewago sandstone 1 

Cussewago stage or monothem 1 

Custards shale member (of Meadville stage) 1 

French Creek limestone member

(of Meadville stage) J 

Griswold conglomerate (in Pocono formation) J 

Harvest Home shale member *

(of Meadville stage) 

Hempfield shale member a (of

Shenango monothem) 

Hosmer sand l (subsurface) 

Hungry Run sandstone member

(of Orangeville shale) 2 

Johnsonburg sandstone 1 

Loyalhanna limestone l ; limestone member (of Greenbrier 

limestone) in Maryland and 

West Virginia

Mauch Chunk shale 1 or formation

fMeadville group l 

Meadville shale member (of

Cuyahoga formation) * 

Mount Morris sand * (subsurface)

Murdockville sand l (subsurface) 

Murrysville sand 1 (subsurface) 

Orangeville shale member (of 

Cuyahoga formation) '; shale 

in Ohio 

Papoose sand l (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 535

United States Continued 

Pennsylvania Continued 

Mississippian Continued

Patton shale member (of Pocono 

formation) 1

Peters Mountain sandstone (in 

Pocono formation) >

fPithole grit 1

Pocono formation, group ' or 

sandstone

Riddlesburg shale member (of 

Pocono formation) 1

Roaring Branch sandstone (in 

Pocono formation) *

Roaring Branch shales (in Pocono 

formation) l

Salvation sand 1 (subsurface)

Schreyfogels limestone 1

Sharpsville formational suite *

Sharpsville sandstone member 

(of Cuyahoga formation) 1 ; 

sandstone in Ohio

Shaws sandstone member 1

Shellhammer Hollow formation 2

fShenango group l

Shenango sandstone *

Shenango shale *

Slippery Rock sand * (subsurface)

Smiths Ferry sand l (subsurface)

Squaw sand l (subsurface)

Thorn Creek gas sand > (subsurface)

Trough Creek limestone member 

(of Mauch Chunk formation) J

West Mead limestone member 1 

Lower Mississippian

Chestnut Ridge sandstone 2

Cove Mountain member (of 

Pocono formation) 2

Hopwood conglomerate *

Lick Run conglomerate 2

Linderman sandstone *

Pine Knob sandstone 2

Second Mountain member (of

Pocono formation) 2 

Mississippian and Devonian(f)

fCrawford shale 1

Oil Lake group > 

Devonian or Carboniferous

Amity shale 1

Armenia limestone lentil (of 

Oswayo formation) *

Bimber Run conglomerate member »

Blue Monday sand 1 (subsurface)

Boulder sand l (subsurface)

Buchanan Hill conglomerate 1

Clintonville oil sand 1 (subsurface)

Cobham conglomerate member 1

Columbia Hill oil rock * (subsurface)

Conewango formation 1

Cussewago shales 1

Dutchmans conglomerate lens l

United States Continued 

Pennsylvania Continued

Devonian or Carboniferous Con. 

East Kane shale member 1 

Elkland parvafacies 1 

f Glade sandstone 1 

Gordon sand l (subsurface) 

Hayfield limestone 1 

Hay field shale l 

Hickory sand 1 (subsurface) 

Hosmer conglomerate * 

Kushequa shale member l 

Littles Corner limestone member 1 (of Hayfield shale) 

fLudlow conglomerate member *

(of Knapp formation) 

Millers sandstone 1 

Millers Cliff conglomerate J 

Potter parvafacies 1 

fRidgway shale member 1 (of

Knapp formation) 

Roystone coquinite member l 

Saegerstown shale 1 

Shannopin sand l (subsurface) 

Smethport magnafacies 1 

fSmethport shale member (of

Knapp formation) J 

Snee sand 1 (subsurface) 

Stony Lonesome bed 1 

Tanners Hill quarry rock (in

Conewango formation) * 

fTanners Hill red (in Conewango

formation) 1

Tidioute shale member l 

Tioga magnafacies l 

fTunangwant conglomerate 1 

Venango group, 1 stage, 1 or monothem l 

fWatson sandstone member l

(of Cattaraugus formation) 

Wetmore conglomerate member l 

Woodcock sandstone l 

Wrightsville conglomerate 1 

Devonian or Mississippian 

Gantz sand l (subsurface) 

Marvin Creek limestone l 

Pine Run sand 1 (subsurface) 

Devonian (see also Silurian and

Devonian) 

Brodhead member (of Marcellus

formation) 2

Buttermilk Falls limestone 2 

Campbell Run sand l (subsurface) 

Elk sand group 1 (subsurface) 

Hanley sandstone (in Cattaraugus formation) 2 

Juniata coal measures l 

Juniata River series 1 

Lytle sand 2

Queen sand 1 (subsurface) 

Red Valley sand l (subsurface) 

Tiona sand l (subsurface) 

Devonian(f)

Edensburg oil sandstone 1 (subsurface)
536 GEOLOGIC NAMES OP NORTH AMERICA

United States Continued 

Pennsylvania Continued

Upper Devonian and Mississippian

Oil Creek Lake group * 

Upper Devonian or Mississippian 

Cherry Ridge conglomerate 1 

Cherry Ridge group 1 

Cherry Ridge limestone 1 

Cherry Ridge red shale 1 

Cherry Ridge sandstone * 

Cherry Ridge shales 1 

Cleveland magnafacies 1 

Coudersport member (of Cattaraugus formation) 1 

tDevils Den sandstone 1 

Dyberry glomerate * 

Elk Mountain sandstone 1 

Elk Mountain transition group 1 

LeBoeuf conglomerate > 

North Warren shale member * 

Pimple Hill conglomerate 1 

fWild Cat coquinite 1 

Upper Devonian 

Allegheny sand l (subsurface) 

Allegrippis sandstone member

(of Chemung formation) * 

Analomink red shale * 

Atwell sand * (subsurface) 

Balltown oil sand 1 (subsurface) 

Barrett sand 1 (subsurface) 

Bayard sand * (subsurface) 

Beatty sand 1 (subsurface) 

Big Bend facies and magnafacies 1 

Blossburg formation 1 

Blue Jay oil sand 1 (subsurface) 

Bradford oil sand group l (subsurface) 

Brallier shale 1

Brandt sandstone (in Kingsley 

member of Wellsburg mono- them) 2 

Brodhead Creek member (of

Tully formation) 2 

Burket black shale member (of

Harrell shale) 1

fBurlington limestone (in Chemung formation) 1 

fCascade sandstone (in Chemung sandstone) l 

Cascade Creek sandstone (in

Chemung formation) 1 

Catawissa reds 1 

Chagrin magnafacies J 

Cherry Grove sand 1 (subsurface)

Clarendon sand l (subsurface) 

Conneaut group * 

Cooper sand 1 (subsurface) 

Cotton formation 2 

Crandall Hill sand 1 (subsurface) 

Damascus red shale l 

Darling oil sand l (subsurface) 

Deer Lick sand 1 (subsurface) 

Delaware flags 1 

Delaware River 

Dellville sandstone 1

United States Continued 

Pennsylvania Continued 

Upper Devonian Continued 

Drinker Creek sandstone member 

(of Lanesboro formational 

suite) 2

Elizabeth sand 1 (subsurface) 

Fall Creek conglomerate lentil

(of Chemung formation) * 

Flatiron coquinite member (of

Riceville formation) 2 

Flat Run sand l (subsurface) 

Fort Littleton formation 1 

Franklindale limestone lentil (of

Chemung formation) * 

Garfield sand * (subsurface) 

Garland sand > (subsurface) 

Gartland oil sand l (subsurface) 

Germania formation 2 

Girard shale member (of Chemung formation) 1 

Glade sand 1 (subsurface) 

Great Bend limestone (in Chemung formation) 1 

Hague gas sand l (subsurface) 

Harrell shale 1

Harrisburg Run sand > (subsurface)

Haskell sand 1 (subsurface) 

Hauns Bridge group * 

Honesdale sandstone group (in

Catskill formation) l 

Howard Quarry sandstone 2 

Irvineton parvafacies 1 

Jumonville sandstone 2 

Kane sand 1 (subsurface) 

Kingsley red shale member (of

New Milford formation) * 

Kings Mill sandstone J 

Kings Mill shales 1 

Lackawaxen conglomerate 1 

Lanesboro member (of New

Milford formation) l 

Lehighton member (of Tully formation) 2

Lewis Run sand l (subsurface) 

Losh Run shale 1 

Luthers Mills coquinite l 

McDonald sand 1 (subsurface) 

McKean group J (subsurface) 

Mansfield red beds (in Chemung

formation) l

Maple Summit sandstone 2 

Montrose red shale (in Catskill

formation) > 

Montrose sandstone 1 

Moosic 1 (formation) 

Mount Pleasant conglomerate l 

Mount Pleasant red shale (in

Catskill formation) * 

New Milford group (in Catskill

formation) 1 

Newport limestone 1 

Newport shales and sandstones l 

Nineveh 1 (sand) (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 537

United States Continued 

Pennsylvania Continued 

L/pper Devonian Continued

Owego shale member (of Cayuta 

monothem) 2

Paupack sandstone (in Catskill 

formation) l

Paupack shales (in Catskill formation) *

Piney Ridge sandstone member 

(of Chemung formation) l

Porter sand l (subsurface)

Riceville shale (as member of 

Chemung formation1)

Rocky Run conglomerate 1

Roulet conglomerate *

Rush formation 1

Rush member (of Tully limestone) 1

Saxton conglomerate member (of 

Chemung formation) *

Saxton shale (in Catskill formation) i

Sheffield gas or oil sand * (subsurface)

Shohola formation l

Skinners Eddy limestone (in 

Catskill formation) >

Sliverville sand 2 (subsurface)

Smethport oil sand 1 (subsurface)

Speechley sand l (subsurface)

Starrucca sandstone l

Starrucca shale (in Catskill or 

Chemung formation) l

Stoneham oil sand l (subsurface)

Stony Brook beds (in Chemung 

formation) '

fsub-Blairsville red shale member 

(of Chemung formation) l

Sugar Run sand * (subsurface)

Susquehanna series l

fTowanda sandstone (in 

Chemung formation) l

Trimmers Rock sandstone *

Venago formation 1

Warren oil sand group l

Watering Trough shale '

Weissport member (of Tully formation) 2

Windfall sand 1 (subsurface)

Youghioheny sandstone 2 

Middle Devonian

Beaver Dam black shale member 

(of Needmore shale) 2

Bowmanstown chert z

Chaneysville sandstone member 1 

(of Manhantango formation)

Fort Hunter sandstone member 

(of Manhantango formation) 2

Frame shale member (in Hamilton group) 1

Gander Run shale member (in 

Hamilton group) 1

Knobsville continental beds 1

Ludlow sandstone l

United States Continued 

Pennsylvania Continued 

Middle Devonian Continued

Mahanoy black shale member * 

(of Marcellus formation)

Mahantango formation * Mexico sandstone member 1 (of 

Marcellus formation)

Montebello sandstone (in Hamilton formation) l

Needmore shale 2

Palmerton sandstone 2

Perry formation l

Peru limestone l

Rockville member (of Skaneateles 

formation) 1

 Selingsgrove lower limestone l

 Selingsgrove lower sandstone l

 Selingsgrove upper limestone l

' Selingsgrove upper sandstone *

Shamokin black shale member l 

(of Marcellus formation)

Turkey Ridge sandstone member 1 (of Marcellus formation) 

Lower or Middle Devonian

Peru sandstone l 

Lower Devonian

Clarks Mill beds »

Fallings Springs sandstone member (of New Scotland formation) 2

Licking Creek limestone 2

Mandata formation 2

Milesburg formation 1

fSelingsgrove shale 1

Stormville conglomerate 1

Stormville hydraulic cement bed 

or water lime 1

Stormville limestone 1

Stormville sandstone 1

Stormville shale 1 

Silurian and Devonian

Lewistown limestone 1 

Silurian

Aquashicola formation l

Barree limestone *

Barree shales 1

Bridgeport sandstone (in Wills 

Creek shale) 1

Croasdale quartzite 1

fHoward sandstone member (of 

Tuscarora sandstone) 1

Landisburg sandstone 1

Logan limestone l

Logan shale l

Lost Creek limestone * McCoytown sandstone l

Mifflintown limestone 1

Poxino Island limestone (in Wills 

Creek shale) 1

Redstone Ridge group 1 

Silurian(f)

Inwood sandstone 1 

Upper Silurian

Bloomfield sandstone l

Bloomsburg red beds 1
538 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Pennsylvania Continued 

Upper Silurian Continued

Bossardsville limestone (as Bossard ville limestone J)

fPoxino Island shale 1 

Middle Silurian

Center iron sandstone (in Clinton 

formation) 1

Keefer sandstone member (of 

Clinton formation) 1

Lakemont formation 1

Swatara iron sandstone (in Clinton formation) 1 

Lower Silurian

Castanea sandstone l

Tuscarora sandstone 1 or quartz- ite 1

Ordovician (see also Cambrian and 

Ordovician)

Cattasauqua limestone 1

Cocalico shale l

fCove limestone J

fCove slate 1

Dauphin shale 2

Jonestown beds or formation *

Lost Run conglomerate 2

fNittany Valley limestone 1

Paxton Creek conglomerate (in 

Martinsburg shale 2

West Fairview member (of Martinsburg shale) 2 

Ordovician(?) or Cretaceous(f)

Conshohocken clay l 

Ordovician(f)

Peach Bottom slate l 

Upper Ordovician

fBald Eagle conglomerate 1

Bangor beds (in Martinsburg 

shale) l

Juniata formation l

Pen Argyl beds (in Martinsburg 

shale) * Reedsville shale '

Shochary sandstone member (of 

Martinsburg formation) 2

fTyrone conglomerate 1 

Middle Ordovician

Antes shale 2

Benner limestone a

Chambersburg limestone 1

Clover member (of Loysburg 

formation) 2

Coburn formation l

Curtin limestone 2

Doylesburg member (of Shippensburg formation) 2

Eyer member (of Hatter formation) 2

Fannettsburg member (of Shippensburg formation) 2

Grazier member (of Hatter formation) 2

Greencastle bed 1

Hatter limestone 2

United States Continued 

Pennsylvania Continued

Middle Ordovician Continued

Hershey limestone 2

Hostler member (of Hatter formation) 2

Housum member (of Mercersburg formation) 2

Kauffman member (of Mercersburg formation) 2

Leesport limestone 1

Lehigh limestone 1

Mercersburg formation 2

Myerstown limestone 2

Nagany limestone 2

Nazareth cement rock 1

Nealmont limestone 2

Nisky limestone l

Oak Hall member (of Nealmont 

limestone) 2

Pinesburg member (of Shippensburg formation) 2

Rodman limestone 1

Salona formation 1

Shippensburg formation 2

Snyder member (of Benner limestone) 2

Stover member (of Benner limestone) 2

Valley View member (of Curtin

limestone) 2 

Lower Ordovician

Axemann limestone 1

Bellefonte dolomite 1

Carlim limestone l

Center Hall formation 1

Coplay limestone 1

Larke dolomite 1

Lemont argillaceous limestone 

member (of Carlim limestone) >

Loysburg formation 1

Mines dolomite l

Nittany dolomite 1

Stonehenge limestone (as member of Beekmantown limestone J)

Valentine formation l 

Lower Ordovician and Cambrian(?)

Conestoga limestone : 

Cambrian and Ordovician

Annville limestone l

Codorus limestone l

 ( Lancaster limestone 1

f Valley limestone 1

fYork limestone 1 

Cambrian

Blue Ridge conglomerates 1

Mountain Creek rock >

South Mountain slates l

Street Road limestone 1 

Upper Cambrian

Allentown limestone l

fBuffalo Run limestone J

Conococheague limestone '

t Corn wall slates l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 539

United States Continued 

Pennsylvania Continued 

Upper Cambrian Continued

Gatesburg formation 1

Limeport limestone 2

Ore Hill limestone member (of 

Gatesburg formation) *

Stacy dolomite member (of 

Gatesburg formation) 1

Warrior limestone 1 

Middle and Upper Cambrian

Elbrook limestone', dolomite, or

formation 

Middle Cambrian

Pleasant Hill limestone 1 

Lower and Middle (?) Cambrian

Leithsville formation » 

Lower Cambrian

Chickies quartzite 1 and slate

fEdgehill quartzite 1

Hellam conglomerate member 

(of Chickies quartzite) 1

fHellam quartzite 1

Kinzers formation 1

Ledger dolomite 1

Montalto quartzite member (of 

Harpers schist) J

tNorth Valley Hill sandstone l

fReading sandstone *

South Mountain quartzite l

Tomstown dolomite 1

fValley Forge quartzite 1

Vintage dolomite 1

Waynesboro formation l

White Spot sandstone 1

fYork schist l

fYork shale 1

fYork County hydromica slates 1 

Precambrian and Lower Cambrian

tCarmargo schist l 

Precambrian

' Arrowmink arkosic gneiss l

' Avondale limestone l

' Avondale series *

 Buck Ridge gneiss *

 Chestnut Hill schists and

gneisses l

Doe Run limestone l 

fFairmount gneiss J 

Frankford gneiss 1 

Furnace Creek quartz diorite

gneiss *

Kennett limestone * 

Kennett rock 1 

Lafayette serpentine 1 

Manayunk mica schists and

gneisses l

Moravian Heights formation 2 

fOctoraro schist 1 

Oley Valley slates 1 

fOverbrook granite gneiss 1 

fPhiladelphia mica schists and

gneisses 1 

Pickering gneiss 1 

fSouth Valley Hill slates and

mica schists l

United States Continued 

Pennsylvania Continued 

Precambrian Continued

fState line serpentine l

fToughkenamon rock 1

Tucquan gneiss 1

fVera Cruz graphite schist l 

Precambrian(f)

Chester County gneiss * 

Age(f)

Lima granite 2

Ridley Park granodiorite 8

Springfield granodiorite 2

Wiltons Run » (limestone belt) 

Rhode Island 

Pleistocene

Barrington clays 1

fMohegan Bluff beds or series 1 

Carboniferous or Post-Carboniferous

Boston Neck granite l

Westerly granite 1 

Carboniferous

fAquidneck series or shales l

Coasters Harbor Island arkose 1

Conanicut arkose * Diamond Hill felsite 1

Kingstown series 1

f Millers River conglomerate *

Natick arkose J

fNewport conglomerate l

Paradise conglomerate 1

Portsmouth conglomerate l

Rose Island arkose 1

Sachuest arkose l

Slate Hill shale 1

Tiverton arkose 1

Woonsocket conglomerate *

fWoonsocket Basin series 1 

Pre-Carboniferous

Metacom granite-gneiss 2 

Pennsylvanian and Permian(f)

fNarragansett Basin series l 

Pennsylvanian

Cranston beds 1

fPawtucket formation 1

Pawtucket shale *

Purgatory conglomerate *

Rhode Island formation l

fSakonnet sandstone 1

Sockanosset sandstone * 

Mississippian(f)

Cowesett granite *

East Greenwich group (as granite 

group l)

Maskerchugg granite 2

Spencer Hill volcanics 2 

Devonian or older

Grant Mills granodiorite (as

granite 0 

Devonian(?) or older

Esmond granite 2

Scituate granite gneiss 2 

Precambrian

fAshton schists l

Blackstone series 1

Cumberland quartzite l
540 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Rhode Island Continued 

Precambrian Continued 

Little Compton shales 1 

Newport Neck shale * 

fSmithfield limestone member

(of Marlboro formation) * 

Precambrian(f)

Absalona formation 2

Albion schist member (of Westboro quartzite) l 

Hunting Hill greenstone 2 

Mussey Brook schist 2 

Nepsachuck gneiss 2 

Sneech Pond schist* 

Woonasquatucket formation 2 

South Carolina 

Pleistocene

fAccabee gravels *

fBohicket marl sands l

{Hampton clays 1

Horry clay 2

Myrtle Beach peat *

"Sea Island sands or loams *

 Simmons Bluff beds 1 

' Tenmile sands >

 Wadmalaw shell marl or phase 1

' Wando clays and sands > 

Pleistocene and Pliocene(f)

fCheraw cobbles * 

Pliocene

fGoose Creek marl or phase * 

Pliocene, lower

Waccamaw formation 1 

Miocene

fCombahee shale *

fSalkehatchie marl or phase l 

Miocene, upper

fPeedee marl 1

fRaysor marl l 

Miocene, lower

fEdisto marl » 

Eocene

fCarolinian bed 1 

Eocene, upper, or Oligocene

Cooper marl 1

fKings Creek silex or phase * 

Eocene, upper

tAshley marl l

Barnwell sand l ; formation in 

Georgia

fCongaree clay member l (of 

McBean formation)

fCooper-Ashley beds l

f Mount Hope marl or phase 1 

Eocene, middle and upper

fSantee beds l 

Eocene, middle

fCaw Caw formation or sands *

Congaree formation (as shale *)

fOrangeburg formation l

Santee limestone 1

Warley Hill marl l ; fphase *

United States Continued 

South Carolira Continued 

Eocene, lower

Black Mingo formation l

tLang Syne beds '

JRhems shale l

fWilliamsburg marl 1 

Upper Cretaceous and Pliocene(f)

fAiken beds l 

Upper Cretaceous

Black Creek formation 1

tBurches Ferry marl l

fHamburg beds or clays r

fMiddendorf formation l

Peedee formation 1 

Upper Triassic

Hornsboro sandstone or zone l 

Carboniferous(f)

Table Rock granite l 

Lower Mississippian

Yorkville quartz monzonite (as

granite ') 

Cambrian(f)

Chauga zone 1

Cherokee zone 1

Poor Mountain limestone series 1 

Probably Lower Cambrian

Blacksburg schist 1

fCherokee limestone l

Gaffney marble 1 

Precambrian

Abbeville-York zone l

Anderson-Spartanburg zone *

Battleground schist l

Carolina gneiss l

Chatooga zone l

Chesterfield zone l

Edgefield-Chesterfield zone J

Keowee zone 1

Oconee Creek zone 1

Saluda zone l

Spartanburg zone l

Stevens Creek slates l

Tunnel Hill zone 1

Tyger zone l

Vaucluse zone l

York zone l 

South Dakota 

Pleistocene

Herrick gravels 8

Orton gravels * 

Pleistocene (pre-Wisconsin)

Moreau gravels 2 

Tertiary, middle

Whitean series l 

Pliocene

Little White River beds » Miocene to Pliocene

Bijou formation * 

Miocene, upper, or Pliocene, lower

Oak Creek formation l 

Miocene, lower and middle

Rosebud beds l 

Oligocene, middle and upper

Brule formation or clay *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 541

United States Continued 

South Dakota Continued

Oligocene, lower, middle, and upper

White River formation or group * 

Oligocene, lower

Ahearn member (of Chadron 

formation) 2

Crazy Johnson member (of Chadron formation) 2

Peanut Peak member (of Chadron formation) 2 

Eocene or Oligocene

Ree beds l 

Paleocene

Ludlow member (of Fort Union 

formation); (as member of 

Lance formation x) 

Cretaceous

Ardmore bentonite bed (in Pierre 

formation) 2

Bull Creek sand (in Hell Creek 

member of Lance formation)*

Middle Creek limestone ledge 

(in Graneros formation) 1

Oacoma zone (in Sully member 

of Pierre formation) 2

Stoneville member (of Fox Hills 

sandstone) 2

Sully member (of Pierre formation) 2

fPierran series l 

Upper Cretaceous

Agency shale member (of Pierre 

formation) 2

Blackhorse shales l

Crow Creek member (of Pierre 

shale) 2

DeGrey member (of Pierre 

shale) 2

Elk Butte member (of Pierre 

shale) 2

fFt. Pierre group l

Fox Hills sandstone 1

Gregory member (of Pierre 

shale) 2

Hermosa lens (in Newcastle formation) 2

Interior formation l

Mobridge member (of Pierre 

shale) 2

Orman Lake limestone member 

(of Greenhorn formation) 2

Pierre shale 1

Rapid City lens (in Newcastle 

formation) 2

Tilford lens (in Newcastle formation) 2

Timber Lake member (of Fox 

Hills sandstone) 2

Trail City member (of Fox Hills 

sandstone) 2

Verendrye member (of Pierre 

shale) 2

Virgin Creek member (of Pierre 

shale) 8

United States Continued 

South Dakota Continued 

Lower Cretaceous

Fall River formation (as sandstone *)

Fuson member (of Lakota formation) ; (as shale l)

Lakota formation (as sandstone 1)

Minnewaste limestone 1 member

(of Lakota formation) 

Upper Jurassic

Redwater shale member (of 

Sundance formation) 2

Unkpapa sandstone l 

Permian and Triassic

Spearfish formation 1 

Permian

Minnekahta limestone l

Opeche formation l or shale 

Pennsylvanian

Minnelusa sandstone 1 

Lower Mississippian

Englewood limestone 1

Pahasapa limestone 1 

Upper Ordovician

Whitewood limestone l or dolomite 

Middle Ordovician

Ice Box shale 2

Roughlock siltstone 2 

Upper Cambrian

Deadwood formation * 

Precambrian

Corson diabase l

De Smet formation 1

Ellison formation l

Estes system 1

Flag rock formation *

Game Lodge granite 2

Garfield formation l

Grizzly formation 2

fHarney granite * Harney Peak granite x

Homestake formation 1

Lead system l

Little Elk gneissoid granite *

Nemo series l

Northwestern formation 1

Pluma formation l

Poorman formation l

Roubaix group 2

Samelias formation 2

Sioux quartzite 1

West Ledge formation 1 

Tennessee 

Pleistocene

Memphis loess l

Milan loam l 

Eocene

fLagrange formation * 

Paleocene

fCrainesville horizon l

fFlatwoods group l

fMiddleton formation l

Porters Creek clay 1 or forma-
542 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued

Tennessee Continued j Cretaceous

Western Valley gravel 1 

Upper Cretaceous 

Coffee sand 1 or formation 

Coon Creek tongue (of Ripley

formation) 1 

McNairy sand or sand member

(of Ripley formation) l 

fMcNairy shell bed 1 

Pennsylvanian

fBon Air Measures l 

fBrushy Mountain Measures l 

fClifty shale » 

Crossville sandstone (in Duskin

Creek formation) * 

Duskin Creek formation * 

f Emory sandstone * 

Etna sandstone l 

Fentress shale division (in Lee

formation) 1 

Frozenhead grit (in Anderson

sandstone) l 

Herbert conglomerate 1 

Jellico formation l 

fMonterey conglomerate * 

Newton sandstone l 

Pilot Knob sandstone l 

Pioneer sandstone 1 

fTracy City Measures l 

Walden sandstone 1 

Windrock sandstone l 

Middle Pennsylvanian 

Anderson sandstone ! 

Bryson formation 1 

Mingo formation l 

Scott shale 1 

Wartburg sandstone 1 

Lower and Middle Pennsylvanian

Briceville shale * 

Lower Pennsylvanian 

Bonair sandstone 1 

Eastland shale lentil (in Bonair

sandstone) 1 

Gizzard formation 1 ; member (of

Lookout sandstone in Georgia) 

Sewanee conglomerate l or member (of Lookout sandstone) 

Vandever shale l 

Warren Point sandstone member

(of Gizzard formation) 1 

Whitwell shale l

fGlendale shale *

fHarpeth shale l

Newman limestone 1

fNewman sandstone lentil (in

Newman limestone) l 

fTullahoma formation 1 

Upper Mississippian 

Garrett Mill sandstone member 

(of Warsaw formation) 1

United States Continued 

Tennessee Continued 

Lower Mississippian 

Eulie shale 2 

Maury formation (as member of

Ridgetop shale ') 

Ridgetop shale l 

Short Mountain facies (of Fort

Payne formation) a Westmoreland shale 2 

Devonian or Carboniferous

Cumberland Gap shale member

(of Chattanooga shale) 1 

Olinger gray shale member (of

Chattanooga shale) * 

Devonian and Mississippian 

Chattanooga shale ' 

Grainger shale * or formation 

Upper Devonian or Mississippian

Swan Creek phosphate 1 

Upper Devonian

Bransford sandstone bed (in 

Gassaway member of Chattanooga shale) 2

Dowelltown member (of Chattanooga shale) 2

Gassaway member (of Chattanooga shale) 2 

Hardin sandstone member (of

Chattanooga shale) J 

Trousdale shale 1 

Lower or Middle Devonian 

Camden chert 1 

Pegram limestone 1 

Lower Devonian 

Bear Branch limestone member

(of Olive Hill formation) » 

Birdsong shale 1 

Cypress Creek chert ' 

Decaturville chert > 

Flat Gap limestone member (of

Olive Hill formation) l 

Harriman chert 1 

Linden group 1 

Olive Hill formation l 

Pyburn limestone member (of

Olive Hill formation) l 

Quail limestone l 

Rockhouse shale 1 

Ross limestone member (of Olive

Hill formation) 1 

Silurian and Devonian

fHarpeth and Tennessee River

group l 

Upper Silurian and Devonian

Hancock limestone > or dolomite 

Upper Silurian 

Decatur limestone 1 

fSneedyille limestone l 

Middle Silurian

Beech River shaly limestone 

member (of Brownsport formation) i
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 543

United States Continued 

Tennessee Continued

Middle Silurian Continued

Bledsoe limestone 1

Bob crystalline limestone member (of Brownsport formation) 1

Brownsport formation 1

Centerville limestone 1

Clifton formation >

Dixon earthy limestone member 

(of Wayne formation) l

fGant bed »

Glenkirk limestone 1

Lego limestone member (of 

Wayne formation)*

Lobelville shaly limestone member (of Brownsport formation)!

Maddox limestone l

Newsom shaly clay 1

South Tunnel bed » Wayne formation l

White Oak Mountain sandstone l

Whites Bend limestone * 

Lower and Middle Silurian

Clinch sandstone 1 or quartzite

Rockwood formation * 

Lower Silurian

t Baker limestone 1 

Ordovician

Bays formation (as sandstone *)

Inman formation 2 

Upper Ordovician and Silurian

fClinch Mountain sandstone l 

Upper Ordovician

Camargo formation 2

College Hill limestone l

Fernvale limestone 1 or formation 1

Leipers limestone 1

fLeipers Creek limestone * Mannie shale (as clay *)

Sequatchie formation 1

Swan Creek limestone » Middle and Upper Ordovician

fNashville group 1

Normandy limestone l 

Middle Ordovician

Athens shale 1

Bigby limestone 1

Cannon limestone 1

t Capitol limestone l

Blount group >

Carters limestone (as member of 

Lowville limestone *)

Catheys limestone l

Chapman Ridge sandstone 2

Douglas Lake member (of Lenoir 

limestone) 2

Farragut limestone 2

Hermitage formation 1 or limestone

United States Continued 

Tennessee Continued

Middle Ordovician Continued

Holston marble, limestone 1 or 

formation

Lebanon limestone *

Lenoir limestone 1

Meadow marble member (of 

Sevier shale) 1

Mosheim member (of Lenoir 

limestone); (as limestone *)

Mount Pleasant phosphate l

Murfreesboro limestone 1

Ottosee shale or limestone l

Pierce limestone 1

Ridley limestone *

fSaltillo limestone 1

Sevier shale 1 or formation

Speers Ferry formation 2

Stones River group or limestone l

Strasburg limestone 2

Tellico formation or sandstone 

member (of Sevier shale); 

(as sandstone l)

Ward limestone 1

t Wells limestone 1

Wells Creek dolomite (as limestone l)

Whitesburg limestone * member

(of Blockhouse shale) 

Lower, Middle, and Upper Ordovician

fCentral limestone and shale 

group 1

Chickamauga limestone * 

Lower Ordovician

Forked Deer limestone l

f Glade limestone l

Grasselli dolomite (in Kingsport 

formation) 2

Heisketl shale 1

Jonesboro limestone 1

Kingsport formation or dolomite J

fKnoxville marble l

{Lebanon group * Mascot dolomite 2

Thorn Hill formation 1

Vestal limestone 1

fWells chert» 

Cambrian and Lower Ordovician

fKnoxville group ! 

Upper Cambrian and Lower Ordovician

Knox dolomite l or group 

Upper Cambrian

Bloomingdale limestone member l 

(of Conocheague-Copper Ridge 

formation)

Copper Ridge dolomite *

Greenville dolomite l

Maynardville limestone x member (of Nolichucky shale); 

formation in Virginia
544 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Tennessee Continued

Upper Cambrian Continued

Morristown dolomite member ' 

(of Conococheague-Copper 

Ridge formation)

Nolichucky shale l 

Middle and Upper Cambrian

JKnox shale 1 

Middle Cambrian

Craig limestone member (of 

Rogersville shale) 2

Maryville limestone l

Pumpkin Valley shale 2

Rogersville shale 1

Rutledge limestone 1 or dolomite 

Lower Cambrian

Apison shale *

fBeaver limestone 1

fChilhowee conglomerate !

Chilhowee group l

fCitico conglomerate l

Cochran conglomerate 1

Erwin quartzite l or formation

Hampton shale 1 or formation

Helenmode member (of Erwin 

formation) 2

Hesse quartzite l member (of 

Erwin formation) or sandstone

fKnox sandstone l

Moccasin Gap member (of Unicoi 

formation) a

Murray shale or shale member 

(of Erwin formation); (as slate 

or shale *)

Nebo quartzite 1 member (of 

Erwin formation) or sandstone

Nichols shale (as slate l)

Shady dolomite 1 or formation

fStarr conglomerate l

Unicoi formation *

fWatauga shale l 

Precambrian

Cades sandstone (as conglomerate »)

Copperhill formation 2

Linville metadiabase >

Ocoee series (as group *)

Pigeon slate ' or siltstone

Roan gneiss 1

Sandsuck formation (as shale ')

Thunderhead sandstone (as conglomerate >) Wilhite formation (as slate *) 

Precambrian (?)

fHiwassee slate 1

Mount Rogers volcanic group 2 

Texas

Quaternary

Calamity formation a

Delaney gravel 2

Judkins formation a

Kokernot formation 2

Monahans formation 2

Neville formation 2

Terra Blanca formation 1

United States Continued 

Texas Continued 

Recent

Ingleside formation 2

Lake Charles formation 2 

Pleistocene

Alta Loma sand 2 (subsurface)

Beaumont clay l

Durst silts 2

Elm Creek silts 2

Houston group l

Leona formation l

Lissie formation x

Onion Creek marl 1

Rio drift l

Rita Blanca deposits 2

fRock Creek beds 1

Seymour formation 1

Spring Creek deposits 2

Tahoka clay 2

Tule formation 1 

Tertiary

fAngelina series '

Cottonwood Spring basalt 2

Crossen trachyte 2

Duflf formation 2

Eagle Peak syenite 2

Goodnight formation x

Green Valley volcanic series 2

Huelster formation a

Jeff conglomerate member (of 

Huelster formation) 2

McCutcheon volcanic series 2

Mitchell Mesa rhyolite 2

Potato Hill andesite a

Pruett formation 2

Seven Springs formation 2

Sheep Canyon basalt *

Square Peak volcanic series *

Star Mountain rhyolite 2

Texhoma series * 

Tertiary (?)

Burro gravel and tuff l 

Tertiary, lower

Ben Day porphyry 2

Mitre Peak complex * 

Tertiary or younger

Butcherknife basalt a 

Pliocene

fBlanco Canyon beds l

Clarendon beds *

Coetas formation l

Goliad sand 1

Labahia member (of Goliad formation) l

Lagarto Creek beds (in Goliad 

sand) l

Lapara sand member (of Goliad 

sand) !

fLlano Estacado formation 1

fPalo Duro beds 1

fPanhandle beds 1

Potter formation »

fStaked Plains formation 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 545

United States Continued 

Texas Continued 

Pliocene(f)

Hockley Mound sand member

(of Wiffls sand) 1 

Uvalde gravel * 

fWillis feruginous sand member *

(of Willis sand) 

Willis sand » 

Pliocene, middle 

Blanco formation 1 

Bridwell formation 2 

Pliocene, lower 

Couch formation 2 

Hemphill beds 1 

Miocene and Pliocene 

Dewitt formation 1 

Dugout clay and gravel l 

fNavasota beds l 

Miocene

Moulton sandstone member (of

Oakville formation) 1 

Oakville sandstone 1 

Onalaska clay l 

Miocene (?) 

Lagarto clay * 

Rawls basalt * 

fRockland sandstone ! 

Miocene, upper, and Pliocene(f) 

Burkeville beds 1 

fFleming clay or group l 

Miocene, upper

Cuero formation 2 

Miocene(f), lower(t)

Chita sand member (of Catahoula formation) 1 

Corrigan formation l 

Dunlap Quarry sandstone member 1 (of Catahoula formation) 

Oligocene or younger

Tascotal formation 2 

Oligocene and younger(?)

Decie member (of Duff forma- tion) 2 

Oligocene and Miocene(f)

Gueydan group l 

Oligocene or Miocene, lower 

Chusa tuff member (of Catahoula tuff) * 

Fant tuff member (of Catahoula

tuff) 1

fGueydan formation 1 

Soledad volcanic conglomerate

member (of Catahoula tuff) 1 

Oligocene

Anahuac formation 2 (subsurface)

Driscoll-Sevier sand 2 (subsurface)

Flour Bluff sand 2 (subsurface) 

Old Ocean shale 2 (subsurface) 

Pierce Estate sands 2 (subsurface) 

Van Vleck sands 2 (subsurface)

United States -Continued 

Texas Continued 

Oligocene(?)

Frip clay 1

Quitman quartz monzonite 2

Refugio sand ' (subsurface)

Saxet sand x (subsurface)

fYeager clay l 

Oligocene, middle

Greta sand l (subsurface) 

Eocene to Miocene(f)

Buck Hill volcanic series 2 

Eocene

t Angelina County beds 1

Buttsgin formation l

Cartright sand 1 (subsurface)

Christine member (of Yegua formation) *

Cistern member (of Yegua formation) 2

Cole sand l (subsurface)

Crockett member l (of Claiborne 

formation)

Diboll member l (of Jackson formation)

Dime Box member (of Yegua formation) 2

fElstone formation * Gazley Creek sands and clays 1

Holzmark sand * (subsurface)

fLipan beds 1

Low Creek beds *

fLufkin beds 1

Lufkin member (of Cook Mountain formation) 1

fLytton formation '

Manning beds l (see p. 621)

fMyrick formation l

Northrip member (of Yegua 

formation) *

fSabine River beds l

Seco formation l

fSquirrel Creek formation l

fTimber Belt beds l

Turkey Creek beds (in Yegua 

formation) l

fWebb Bluff x (greensand marls)

Yegua River conglomerate (in

Yegua formation) * 

Eocene(?)

Uvalde phonolite l 

Eocene, upper

Agua Verde shale member (of 

Fayette formation) 2

Bedias sandstone member * (of 

Wellborn formation)

Cadell formation (as clay x)

Calliham sand l (see p. 621)

Carlos sandstone member l (of 

Wellborn formation)

Conroe sand 1 (subsurface)

Dilworth sand 1 (see p. 621)

Driscoll sand l (subsurface)
546 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Texas Continued

Eocene, upper Continued

Dubose sands and clays 1 (see p. 621)

Falls City shale »

Fashing clays * (see p. 621)

Fayette sandstone l

Glendale beds l

Gorgora shale member (of

Fayette formation) 2 

Government Wells sand l (subsurface)

Grawunder sand 1 (subsurface) 

Gutoskey sand ! (subsurface) 

Jacob sand l (subsurface) 

McElroy member (of Fayette

sandstone) l (see p. 621) 

Mirando sand l (subsurface) 

Mirando City sand l (subsurface) 

Mitchells Ferry beds J 

Nichols sand l (subsurface) 

Olmos sand 1

Fetters sand l (subsurface) 

Resendez shale member (of

Fayette formation) 2 

Rock Prairie sandstone 2 

Salineno sandstone member (of

Fayette formation) 1 

Simms sand 1 (subsurface) 

Stones Switch sand J (see p. 621) 

Wellborn sandstone 1 

Whitsett formation (as beds !)

(see p. 621) 

Wooleys Bluff clays * 

Yuma sandstone member * (of

Manning formation) 

Eocene, middle

Arp sand member (of Reklaw

formation) 2 

Bigford member (of Mount Selman formation) 2 

Byran sandstone 2 

Carrizo sand 1 

Cook Mountain formation l 

Easterwood shales 2 

Eaton green sand lentil (in

Claiborne group) 1 

Falcon sandstone member (of

Cook Mountain formation) 1 

Garceno sandstone member (of

Cook Mountain formation) 2 

Hurricane marine lentil (in Landrum member of Cook Mountain formation) 2 

Jennings sand 1 (subsurface) 

Jos6 shale member (of Yegua

formation) 2 

Landrum shale member (of

Crockett formation) 2 

La Perla shale member (of Yegua

formation) 2 

Laredo formation 3 

Little Brazos limestone lentil (in

Claiborne group) x 

"Loma Blanca tongue (of Yegua

formation) 2

United States Continued 

Texas Continued

Eocene, middle Continued

Los Arrieros shale member (of 

Yegua formation) 2

Marquez shale member (of 

Reklaw formation) 2

Mills bed » Moseley limestone lentil l (in 

Crockett member of Cook 

Mountain formation)

Mount Selman formation 1

Mount Tabor shale member (of 

Crockett formation) 2

Nacogdoches beds >

Newby glauconitic sand member 

(of Reklaw formation) 2

Noonday greensand 1

Omen member (of Mount Selman 

formation)'

Palafox sandstone member (of 

Mount Selman formation) 1

Queen City sand member (of 

Mount Selman formation) l

Reklaw member (of Mount Selman formation) 1

San Augustine group l

Schott sand J (subsurface)

Serbin sand lentil (in Mount 

Tabor member of Yegua formation) 2

Smetana sandstone 2

Spiller sand member (of Crockett 

formation) 2

Stone City beds l

Tabor member (of Crockett formation) 2

Therrill clay member (of Weches 

formation) 2

Tuleta sand l (subsurface)

Two Mile member (of Crockett 

formation) 2

Tyler greensand member (of 

Sparta sand) 1

Tyus member (of Weches formation) 2

Veleno member (of Cook Mountain formation) 2

Viesca member (of Weches formation) 2

Webster sand l (subsurface)

Weches greensand member (of 

Mount Selman formation) 1

Weiss sand l (subsurface)

Wheelock marl member (of Crockett formation) 2

Yegua formation l 

Eocene, lower

Butler clay member (of Rockdale 

formation) l

Caldwell Knob member (of Seguin formation) 1

Calvert Bluff clay beds (of Rockdale formation) l

Hilbigzone J (in Rockdale formation)

Hooper formation 2

Indio formation l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 547

United States Continued 

Texas Continued

Eocene, lower Continued

Losoya Creek conglomerate (in 

Sabinetown formation) 1

Pendleton formation 2

Pendleton Ferry formation 2

Pendleton zone l

Rockdale formation 1

fSabine formation *

Sabinetown formation *

Seguin formation '

Simsboro sand member (of Rockdale formation) l

Solomon Creek member (of Seguin formation) 1

fTehuacana formation 1 

Paleocene

Kerens member (of Wills Point 

formation) 1

Kincaid formation 1

Littig glanconitic member (of 

Kincaid formation) 1

Lone Oak limestone lentil (in 

Kincaid formation) 1

Mexia member (of Wills Point 

formation) 1

Pisgah member (of Kincaid formation) 1

Rocky Cedar Creek limestone 

lentil (in Kincaid formation) l

Rosette bed (in Midway formation) 2

Tehuacana member (of Kincaid 

formation) l

Wills Point formation l

fWortham aragonite lentil (in

Wills Point formation) 1 

Cretaceous

t Cross Timbers 1 (sands or formation)

Kanawha volcanic zone (of Eagleford formation) 2

Kirschberg evaporite (in Edwards limestone) 2

Lake Crockett formation 2

Lasca formation 2

Medill volcanic zone (of Eagleford formation) 2

Pine Bluff volcanic zone (of 

Eagleford formation) 2

Tarantula formation 2 

Cretaceous (?)

Iron Mountain intrusive 1

Ojo Bonito porphyry 1

Toborg sand 1 (subsurface) 

Upper Cretaceous and Tertiary

Chisos volcanics (as beds 0 

Upper Cretaceous

Aguja formation x

Anacacho limestone *

Annona chalk l

Arcadia Park formation 1

Austin chalk 1

fBexar 1 [unit]

Black Prairie series 1 

504835 58 10

United States Continued 

Texas Continued

Upper Cretaceous Continued

Blossom sand 1

fBlue Bluffs division l

Bluebonnet member (of Lake 

Waco formation) 2

Bonham marl l

Boquillas flags 1

Bouldin member (of Lake Waco 

formation) 2

Britton clay l

Buda limestone 1

Burditt marl 1

Carpenter bed !

Carpenter limestone member (of 

Grayson formation) 2

Chispa Summit formation l

fCline l (beds)

Cloice member (of Lake Waco 

formation) 2

Colquitt formation 1

Cooledge chalk 1

Corsicana marl 1

Crown conglomerate l

fDallas limestone 1

fDel Rio clay J

Dessau formation a

Dexter member (of Woodbine 

formation) 1

Durango sand member (of Taylor marl) 1

Eagle bed 1

Eagle Ford shale, clay l or formation

Eagle Mountains sandstone 

member (of Grayson formation) 2

Eagle Pass formation x

Ector tongue (of Austin chalk) 1

Edens sand J (subsurface)

Eldorado sand 1 (subsurface)

Escondido formation l

Euless member (of Woodbine 

formation) 2

Farias beds l

Fizzle Flat lentil (in Terlingua 

formation) 2

Gober tongue (of Austin chalk) l

Grayson formation, shale, or marl 

(as marl member of Denison 

formation J)

Gulf series 1

Kemp clay l

fKickapoo marl l

Lake Waco formation 2

Lewisville formation or member 

(of Woodbine formation); (as 

marine member of Woodbine 

sand *)

fLott chalk member (of Taylor 

marl) l

Lytton Springs sand * (subsurface)

fMarlin chalk member (of Taylor 

marl) 1
548 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Texas Continued

Upper Cretaceous Continued

Morrow pay sand l (subsurface)

Navarro group 1 or formation

Neylandville marl *

Olmos formation !

Pecan Gap chalk member) of 

Taylor marl) l

Pepper shale member (of Woodbine formation); (as formation !)

Pilot Knob tuff 2

Powell sand 1 (subsurface)

fPinto limestone l

fPulliam formation 1

{Rattlesnake beds 1

Red Branch member (of Woodbine formation) 2

fRed River group 1

Rogers chalk lens (in Taylor 

marl) 1

fRoxton beds 1

St. Edwards tuff *

San Carlos formation 1

San Miguel formation 1

South Bosque marl l

fsub-Clarksville sand l (subsurface)

Tarrant formation * or member 

(of Lewisville formation)

Taylor marl l

Templeton member (of Woodbine formation) 2

Terlingua clay 1

Thrall sand l (subsurface)

fTimber Creek beds 1

{Timber Creek group l

Tornillo clay l

Upson clay l

Valverde flags l

Vieja series l

Webberville beds l

Wolfe City sand member (of 

Taylor marl) * Woodbine sand, clay, l or formation 

Lower and Upper Cretaceous

Comanche series 1 

Lower Cretaceous

t Austin marble 1

Bacon limestone member (of 

Ferry Lake formation) 2 (subsurface)

fBarton Creek limestone l

Bluff bed i

Bluff Dale sand (in Travis Peak 

formation) l

Bluff Mesa formation 2

Bonnellian series 1

Boracho sandstone 2

fBosque division 1

Burnt limestone 2

Caddo Levee Board horizon 1 

(subsurface)

Campagrande formation 1

United States Continued 

Texas Continued

Lower Cretaceous Continued

Carr sand ! (subsurface)

Cedar Park member l (of Walnut 

clay)

fChoctaw limestone 1

t Comanche Peak group 1

Comanche Peak limestone 1

Cow Creek limestone member (of 

Travis Peak formation or Pearsail formation); (as beds *)

Cox sandstone 1

Cuchillo formation 1

Dees horizon or sand 1 (subsurface)

t Denison formation 1

Denton clay (as member of 

Denison formation x)

Devils River limestone 1

Duck Creek limestone (as formation *)

Edwards limestone l

Espy formation 2

Etholen conglomerate *

Finlay limestone 1

Fort Worth limestone 1

Fredericksburg group 1

Gatesville formation l

fGainesville * [group]

Gait sand * (subsurface)

Georgetown limestone *

Glen Rose limestone l or formation

t Grand Prairie formation l

Hensell sand member (of Travis 

Peak formation) l or shale 

member (of Pearsall formation) in subsurface

Hill sand horizon 1

fLeander beds l

Main Street limestone (as member of Denison formation l)

Maness shale member (of Tyler 

formation) 2 (subsurface)

t Marietta beds 1

Maxon sandstone 1

Mountain bed l

Muleros sandstone l

fNorth Denison sand l

Paluxy sand x or formation

Pawpaw formation (as sandy 

member of Denison formation »)

Pearsall formation 2 (subsurface)

fPottsboro subgroup 1

Presidio formation l

fPreston formation 1

Quitman bed 1

Shafter limestone *

Shingle Hills formation 2

fShoal Creek limestone 1

South Tyler formation 2 (subsurface)

Sycamore sand (in Travis Peak 

formation) l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 549

United States Continued 

Texas Continued

Lower Cretaceous Continued

Thorp Springs limestone l

Torcer formation 1

Travis Peak formation 1

Travis Peak limestone (in Travis 

Peak formation) 1

Trinity group or sand 1

Trinityan series 1

University Mesa marl 1

Walnut clay l ; shaly member (of 

Goodland limestone) l in NE 

Texas

fWashita limestone 1

Weatherford lime rock 1 (subsurface)

Weno limestone or clay (as clay 

member of Denison formation »)

fWeno subgroup !

Yucca formation (as bed x ) 

Upper Jurassic

Malpne formation * 

Triassic

Bissett conglomerate l

Camp Springs conglomerate 1

Dockum group l

Dockuman series 1

Tecovas formation 1

Trujillo formation l 

Permian and Triassic

t Brazos series l 

Permian

Abilene formation l

Acme dolomite (in Blaine formation) i

Albanian series l

t Albany formation 1

Alta formation x

Apache limestone l

Aspermont dolomite 1

Bayloran series 1

Beaverburk limestone l

Big Lake lime 1 (subsurface)

fBlowout Mountain sandstone '

Bluff bone bed l

fBone Canyon limestone *

Briggs formation 2

Buffalo Hill sandstone 1

Childress dolomite member (of 

Marlow formation); (as member of Dog Creek shale J)

Chinati series l

Cibolo formation x

Cieneguita beds *

Claytonville dolomite 1

Claytonville gypsum 1

fColeman division 1

Coleman bed, clay, or limestone 

(in Admiral formation) 1

Croton gypsum l

Culberson series 1

Delaware Mountain sandstone l

United States Continued 

Texas Continued 

Permian Continued

fDos Alamos gypsum member (of 

Delaware Mountain formar 

tion) * ^

fDothan limestone (in Moran 

formation) 1

t Double Mountain formation l

Doublian series l

Dozier sandstone member (of 

Rush Springs formation); (as 

member of Peacock formation »)

Eskota beds l

Eskota dolomite or gypsum 1

fFrijole limestone member (of 

Delaware Mountain formation) i

Frijole shale 1

Fulda sandstone 1

Glass Mountains formation l

Groesbeck dolomite 1

Guthrie dolomite l

Hardin School limestone 1

Hartgrove limestone member (of 

Talpa formation) l

Hart School bed (in Moran 

formation) l

Hueconian 1 (series)

Indian Creek shale member (of 

Admiral formation) 1

Lake Kemp limestone (in Lueders 

formation) l

Lake Lytle limestone l

Lake Trammel sandstone 1

Limpia x (limestone)

Lytle limestone 1

McCaulley dolomite 1

Maravilla dolomite 1

Maybelle limestone 1

f Memphis sandstone (in Peacock 

formation) l

Millersview limestone member 

(of Grape Creek formation) 1

Mina Grande formation a

fMoran limestone member (of 

Moran formation) 1

Morrison sand 1 (subsurface)

Oriana gypsum member (of Peacock formation) 1

Otero limestone l

Paint Rock bed *

fPeacock formation l

Putnam limestone (in Putnam 

formation) l

Putnam sandstone (in Putnam 

formation) 1

Quanah gypsum l

Royston formation l

fRustler Springs formation l

Shultz limestone member (of 

Talpa formation) 1

Sweetwater dolomite 1

Swenson gypsum member ( (of 

Peacock formation)
550 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Texas C ont inue d 

Permian Continued

Texon sand * (subsurface)

Tye formation l

Wagon Yard gypsum l

Wahs Creek shale (in Moran

formation) 1 

Ward gypsum l 

fWichita conglomerate (in Clear

Fork formation) 1 

Winkler Ford limestone member

(of Grape Creek formation) 1 

Yates sandstone 2 (subsurface);

formation 2 (subsurface and

surface in New Mexico) 

Yoakum dolomite member (of

Queen formation) 2 (subsurface) 

Permian (Ochoa)

Castile gypsum J or formation 

Cowden anhydrite member (of

Salado formation) 2 

Dewey Lake redbeds 2 (subsurface)

Rustler formation l or limestone 1 

Salado formation (as halite J);

(subsurface and surface) 

Tessey limestone 1 

Permian (Guadalupe)

Alibates dolomite lentil (of

Quartermaster formation) l 

Altuda formation (as shaly member of Capitan limestone l) 

Bell Canyon formation 2 

Brushy Canyon formation 2 

Capitan limestone 1 

Cherry Canyon formation 2 

Delaware Mountain group (as

formation x ) 

Getaway limestone member (of

Cherry Canyon formation) 2 

Gilliam thin-bedded member (of

Capitan limestone) 1 

Goat Seep limestone 2 

Guadalupe series (as group J) 

Hegler limestone member (of

Cherry Canyon formation) 2 

Lamar limestone member (of

Bell Canyon formation); (as

member of Delaware Mountain

formation x ) 

McCombs limestone member (of

Bell Canyon formation) 2 

Manzanita limestone member

(of Cherry Canyon formation) 2 

Pinery limestone member (of

Cherry Canyon formation) 2 

Rader limestone member (of

Cherry Canyon formation) 2 

Ross Mine formation 2 

Saddlehorse gypsum lentil (of

Quartermaster formation) J 

South Wells limestone member

(of Cherry Canyon formation) 2

United States Continued 

Texas Continued

Permian (Guadalupe) Con tinued

Vidrio limestone member (of 

Word formation); (as member 

of Capitan limestone *)

Word formation 1 

Permian (Leonard-Guadalupe)

Pipeline shale 2 

Permian (Leonard)

Arroyo formation >

Bone Spring limestone *

Bullwagon dolomite 1 member 

(of Vale formation)

Choza formation 1

Clear Fork group (as formation 

or group J)

Collingsworth gypsum member 

(of Blaine formation) 1

Cutoff shaly member (of Bone 

Spring limestone) 2

Hess limestone member (of 

Leonard formation) 1

Kirby Lake dolomite a

Leonard formation l or series

Merkel dolomite member (of 

Choza formation); (as member 

of Clear Fork formation J)

Pease River group 2

Rainy limestone member (of 

Arroyo formation); (as member of Clear Fork formation *)

San Angelo sandstone l

Sprayberry sandstone 2 (subsurface)

Standpipe limestone member (of 

Arroyo formation); (as member 

of Clear Fork formation l)

Vale formation 1

Victorio Peak gray member (of

Bone Spring limestone) 1 

Permian (Leonard?)

Bead Mountain limestone member (of Belle Plains formation) 1

Belle Plains formation x

Clyde formation 1

Elm Creek limestone member (of 

Belle Plains formation); (as 

member of Admiral formation i)

Grape Creek limestone member 

(of Clyde formation) *

Jagger Bend limestone 1 member 

(of Belle Plains formation)

Jim Ned shale member (of Belle 

Plains formation) 2

Lueders limestone 1

Talpa limestone l member (of 

Clyde formation)

Valera shale 1 member (of Belle 

Plains formation)

Voss shale member (of Belle 

Plains formation) 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 551

United States Continued 

Texas Continued

Permian (Leonard? and Wolf camp)

Wichita formation or group l 

Permian (Wolfcamp)

Admiral formation 1

Camp Colorado limestone member (of Pueblo formation) 1

Camp Creek shale member (of 

Pueblo formation) 1

Coleman Junction limestone 

member (of Putnam formation) i

Coon Mountain sandstone member (of Pueblo formation) *

Dean sandstone 2 (subsurface)

Deer Mountain red shale member (of Hueco formation) 1

Fisk formation 2

Gouldbusk limestone member 

(of Moran formation) 2

Hordes Creek limestone member 

(of Admiral formation) 1

Horse Creek limestone member 

(of Moran formation) l

Hueco limestone 1

Ibex limestone 2

Kriz lens (in Hueco formation) 2

Lost Creek shale member (of 

Admiral formation) 1

Moran formation 1

Overall limestone member (of 

Admiral formation) 2

Powwow conglomerate member 

(of Hueco limestone) >

Pueblo formation l

Putnam formation l

Saddle Creek limestone member 

(of Pueblo formation); (as 

member of Harpersville formation i)

Salt Creek Bend shale J member 

(of Pueblo formation)

Santa Anna shale member (of 

Moran formation) 1

Santa Anna Branch shale member 

(of Putnam formation) 1

Sedwick limestone member (of 

Moran formation) 1

Stockwether limestone member 

(of Pueblo formation) 1

Waldrip member (of Pueblo formation) ; (as member of Harpersville formation x )

Watts Creek shale member (of 

Moran formation) 1

Wildcat Creek shale member (of 

Admiral formation) 2

Wolfcamp formation l or series 

Carboniferous

Cimarronian series 1

Wichitan series '

Wiley dolomite 1 

Pennsylvanian

Antelope Creek bed (in Strawn 

formation) 1

United States Continued 

Texas Continued

Pennsylvanian Continued

Archer County sand 1 (subsurface) 

Balsora limestone (in Palo Pinto

formation) 2

Barton Creek limestone (in Millsap Lake formation) l 

Bend sand 1 (subsurface) 

Berino member (of Magdalena

formation) 2 

Big Valley bed ' 

Binney sand l (subsurface) 

Bishops Cap member (of Magdalena formation) 2 

Bond sand 1 (subsurface) 

Boone Creek limestone member

(of Palo Pinto limestone) 1 

Brannon limestone member (of

Millsap Lake formation) 1 

Brannon Bridge limestone (in

Millsap Lake formation) 1 

fBreckenridge formation l 

Breckenridge lime 1 (subsurface) 

Brelsford sand l (subsurface) 

Brick Yard limestone 1 

Bridgeport limestone (in Palo

Pinto formation) 1 

Brown Creek bed (in Strawn

formation) 1 

fBrownwood division 1 

Bryson sand 1 (subsurface) 

Buck Creek sandstone 1 

Buffalo Creek bed (in Strawn

formation) 1 

Bull Creek sandstone (in Strawn

formation) > 

fBunger formation 1 

Burkburnet sands J (subsurface) 

Burkett sand 1 (subsurface) 

Burnt Branch bed (in Strawn

formation) 1

Buttram sand 1 (subsurface) 

Caddo limes 1 (subsurface) 

Chico Ridge limestone (in Graford formation) 1 

Childers sand * (subsurface) 

Cisco Lake sandstone 2 

fClear Creek limestone member

(of Graford formation) 1 

Comanche Creek bed (in Strawn

formation) 1

Cook sand 1 (subsurface) 

Cottonwood Creek beds (in

Strawn formation) 1 

Cross Cut sand l (subsurface) 

Cross Plains sand 1 (subsurface) 

Cundiff limestone (in Caddo

Creek formation') 1 

Dalmar sand 1 (subsurface) 

Dennis Bridge limestone (in

Millsap Lake formation) l 

Desdemona sand 1 (subsurface) 

Devils Den limestone (in Graford formation) l
552 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Texas Continued

Pennsylvnnian Continued

Dickerson member (of Millsap

Lake formation) 1 

Dimple limestone 1 

Dobbs Valley sandstone (in Millsap Lake formation) 1 

Dog Bend limestone (in Mineral

Wells formation) 1 

Dugout beds J 

Earnest sand 1 (subsurface) 

fEastland formation 1 

fEastland limestone member (of

Caddo Creek formation) 1 

Eastland sandstone (in Graham

formation) 1 

Elliott Creek bed (in Strawn

formation) 1 

Elm Creek limestone x 

Eolian limestone member (of

Pueblo formation) 1 

Finis shale member (of Graham

formation) 1

Fox Ford bed (in Strawn formation) 1

Fry sand 1 (subsurface) 

Gaptank formation 1 

Goen limestone (in Millsap Lake

formation) 1 

Gonzales Creek shale member

(of Graham formation) l 

t Gonzales shale 1 

Gordon sandstone (in Strawn

formation) 1

Gose sand J (subsurface) 

fGraford limestone member (of

Graford formation) 1 

Grindstone Creek member (of

Millsap Lake formation) 1 

fGunsight formation 1 

Gwinnup sand 1 (subsurface) 

Hanna Valley bed (in Strawn

formation) 1

Harris sand 1 (subsurface) 

Raymond formation 1 

Hill Creek beds member (of Millsap Lake formation) 1 

Hodges sand J (subsurface) 

Hog Mountain sandstone (in

Mineral Wells formation) 1 

Horse Creek clay and shale (in

Strawn formation) 1 

Hudson Bridge limestone (in

Palo Pinto formation) 1 

Indian Creek bed (in Strawn

formation) 1

fJacksboro formation 1 

Jasper Creek shale (in Graford

formation) 1 

Keechi Creek shale and sandstone

(in Mineral Wells formation) 1 

Kickapoo Falls limestone (in

Millsap Lake formation) 1 

Kissinger sand l (subsurface) 

Lake sandstone J (subsurface)

United States Continued 

Texas Continued

Pennsylvanian Continued

Lake Bridgeport shale 1

La Tuna member (of Magdalena 

formation) 2

Lazy Bend member (of Millsap 

Lake formation) 1

Lone Camp limestone (in Mineral Wells formation) 1

Lower Freeman-Hampton sand 1 

(subsurface)

Lynch Creek bed (in Strawn formation) 1

McClesky sand J (subsurface)

McMillan sand l (subsurface)

Martin Lake limestone (in Palo 

Pinto formation) 1

Meek Bend limestone (in Millsap Lake formation) 1

Milburn shale 1

fMillsap division (in Strawn 

group) 1

Moutray sand l (subsurface)

Necessity shale member (of Graham formation) 1

Noodle Creek lime 1 (subsurface)

Nimrod limestone l

Nimrod shale (in Pueblo formation) 1

Olden sand x (subsurface)

Oran sand lentil (in Graford formation) 1

Posideon shale member (of Graford formation) 1

fRanger formation l

Ranger oil sand 1 (subsurface)

fRanger series l

Ray sand 1 (subsurface)

fRichland sandstone 1

Ricker Station limestone member 

(of Grindstone Creek formation)2

Rochelle conglomerate (in Graford formation) 1

Rockhill limestone (in Graford 

formation) 1

Rough Creek bed (in Strawn 

formation) 1

fRough Creek shale member (of 

Tesnus formation) 1

Salesville shale member (of Mineral Wells formation) 1

Sanders Bridge limestone (in 

Palo Pinto formation) 1

Santo limestone (in Millsap Lake 

formation) 1

Seaman Ranch shale member 

(of Brad formation) 1

Shadrick Mill sandstone (in 

Strawn formation) 1

South Bend sandstone and shale 

(in Graham formation) 1

fSpeck Mountain clay (in Thrifty 

formation) l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 553

United States Continued 

Texas Continued

Pennsylvanian Continued

Spring Creek bed (in Strawn 

formation) 1

Stephens lime 1 (subsurface)

Steussy shale member (of Millsap Lake formation) 1

Swastika sand 1 (subsurface)

Tesnus formation 1

Thurber sand 1 (subsurface)

fTrickham bed (in Graham formation) 1

Veale sand 1 (subsurface)

Ventioner bed (in Brad formation) 1

Village Bend limestone (in Mineral Wells formation) 1

fWaldrip bed 1

fWaldrip division l

fWaldrip limestone member (of 

Harpersville formation) 1

White Ranch limestone (in 

Graham formation) 1

Wilbarger Creek bed (in Strawn 

formation) 1

Willow Point limestone (in Palo 

Pinto formation) 1

Wilmot J [sand] (subsurface)

Wizard Wells limestone (in Graford formation) 1

Wolf Mountain shale member

(in Graford formation) 1 

Upper Pennsylvanian

Adams Branch limestone member (of Graford formation) 1

Avis sandstone member (of 

Graham formation); (as member of Thrifty formation :l)

Belknap limestone member (of 

Thrifty formation); (as member of Harpersville formation x )

Blach Ranch limestone member 

(of Thrifty formation) 1

Bluff Creek shale member (of 

Graham formation) 1

Brad formation l

Breckenridge limestone member 

(of Thrifty formation) 1

Brownwood shale member (of 

Graford formation) 1

Bunger limestone member (of 

Graham formation) 1

Caddo Creek formation 2

Canyon group l

Cedarton shale member (of 

Graford formation) 1

Chaffin limestone member (of 

Thrifty formation) 1

Cisco group l

Colony Creek shale member (of 

Caddo Creek formation); (as 

shale 2)

Craddock clay *

United States Continued 

Texas Continued

Upper Pennsylvanian Continued

Crystal Falls limestone member 

(of Thrifty formation); (as 

member of Harpersville formation J)

Curry clay 2

Fincher sand J (subsurface)

Gonzales limestone member (of 

Graham formation)1

Graford formation 1

Graham formation 1

Gunsight limestone member (of 

Graham formation) 1

fHarpersville formation l

fHog Creek shale member (of 

Caddo Creek formation) 1

Home Creek limestone member 

(of Caddo Creek formation) 1

Ivan limestone member (of Graham formation); (as member of 

Thrifty formation J)

Jacksboro limestone member (of 

Graham formation) 1

Lohn shale member (of Thrifty 

formation) 1

Merriman limestone member 

(of Graford formation) 1

North Leon limestone member 

(of Graham formation) 1

Obregon formation 2

Palo Pinto limestone x

Parks Mountain sandstone member (of Thrifty formation) 1

Placid shale member (of Brad 

formation) J

Quinn clay 2

Ranger limestone member (of 

Brad formation) 1

Rocky Mound limestone member 

(of Graham formation) 1

Rough Mountain conglomerate 

lentil (in Brownwood shale) 2

Salem School limestone member 

(of Graham formation) 2

Specks Mountain limestone 

member (of Thrifty formation) 1

Staff limestone member (of 

Graford formation) 1

Thrifty formation l

Wayland shale member (of 

Graham formation) 1

Whitt group 2

Wiles limestone member (of 

Graford formation) 1

Winchell limestone (as member 

of Graford formation J)

Wynn limestone member (of

Palo Pinto formation) 2 

Middle Pennsylvanian

Brazos River conglomerate member (of Garner formation) 1

Capps limestone member (of 

Mineral Wells formation) 1
554 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Texas Continued

Middle Pennsylvanian Continued 

Colony School conglomerate 2 

East Mountain shale member

(of Mineral Wells formation) 1 

Garner formation 1 

Gibson limestone member (of

Grindstone Creek formation) 2 

Lake Pinto sandstone member

(of Mineral Wells formation) 1 

Millsap Lake formation 1 

Mineral Wells formation 1 

Mingus shale member (of Garner

formation) J 

Ricker sandstone member (of

Mineral Wells formation) 1 

Strawn group J 

Turkey Creek sandstone member

(of Mineral Wells formation) 1 

Lower and Middle Pennsylvanian 

Bend group 1 

Marble Falls limestone 1 

Smithwick shale ' 

Lower Pennsylvanian

Aylor member (of Big Saline

formation) 2 

Big Saline group 2 

Brister member (in Big Saline

formation) 2 

Brook lentil (of Big Saline

formation) 2

Caddo Pool formation 2 (subsurface)

Comyn formation 2 (subsurface) 

De Leon formation 2 (subsurface) 

Eastland Lake formation 2 (subsurface) 

Gibbons conglomerate lentil (in

Marble Falls formation) 2 

Kickapoo Creek group 2 

Lampasas series 2 

Lemons Bluff member (of Marble

Falls formation) 2 

Parks formation 2 (subsurface) 

Rayville formation 2 

Sipe Springs formation 2 (subsurface) 

Sloan member (of Marble Falls

formation) 2 

Soldiers Hole member (of Big

Saline formation) 2 

Mississippian

Barnett shale 1 or formation 

Chappel formation * 

Espey Creek limestone member

(of Chappel formation) 2 

Helms formation 1 

King Creek marl member (of

Chappel formation) 2 

Whites Crossing coquina member

(of Chappel formation) 2 

Upper Mississippian 

Las Cruces formation 2 

Rancheria formation 2

United States Continued 

Texas Continued 

Devonian

Canutillo formation 2 

Devonian(f)

Caballos novaculite :

t Santiago chert * 

Upper(?) Devonian

fZesch formation 2 

Middle(f) and Upper Devonian

Ives breccia member (of Houy

formation); (as breccia 2) (seep. 621) 

Middle Devonian

Bear Spring formation 2 

Lower or Middle Devonian

Stribling formation 2 

Lower Devonian

Pillar Bluff limestone 2 

Silurian

Fusselman limestone * 

Ordovidan

El Pasan series 1 

Upper Ordovidan

Burnam limestone 2

Maravillas chert 1

Montoya limestone J

Montoyan series l

Persimmon Gap shale or forma- tion 2 

Upper Ordovidan(f)

Solitario formation J 

Middle Ordovidan

fBrewster formation 1

Connell sandstone member (of 

Oil Creek formation) 2 (subsurface)

Fort Pefta formation 1

McKee sandstone 2 (subsurface)

Waddell sandstone 2 (subsurface)

Woods Hollow shale * 

Lower Ordovidan

Alsate shale 1

Deep Creek division * Ellenburger group (as limestone !)

El Paso limestone l or formation

German formation 2

Honeycut formation 2

Marathon limestone 1

Monument Spring dolomite member (of Marathon limestone) 1

Staendebach member (of Tanyard formation) 2

Tanyard formation 2

Threadgill member (of Tanyard

formation) 2 

Cambrian and Ordovidan

Bliss sandstone 1

Burnet marble 1

t Marathon series l 

Cambrian

Erna member (of Wilberns formation) 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 555

United States Continued 

Texas Continued

Upper Cambrian or Lower Ordovician

Beaver division l

Hinton division 1

Hoover division J

Wyo division 1 

Upper Cambrian and Lower Ordovician(f)

Leon series 1 

Upper Cambrian

Buttrill Ranch member (of 

Dagger Flat formation)*

Cap Mountain limestone member (of Riley formation); (as 

formation J)

Dagger Flat sandstone 1

Hickory sandstone * member (of 

Riley formation)

Katemcy series 1

Lion Mountain sandstone mem 

her (of Riley formation); (as 

member of Cap Mountain 

formation x)

Morgan Creek limestone member (of Wilberns formation)

fPedernales dolomite member 

(of Wilberns formation) 2

Point Peak shale member (of 

Wilberns formation) 2

Point Rock shale member (of 

Wilberns formation) 2

Riley formation 2

fRiley series 1

Roberts Ranch member (of Dagger Flat formation) 2

San Saba limestone member 

(of Wilberns formation); (as 

series x)

Welge sandstone member (of 

Wilberns formation) 2

Wilberns formation 1 

Precambrian

Allamoore limestone or formation 2

Bear Mountain granite 2

Big Branch gneiss 2

fBodeville series J

fBurnetan system *

Carrizo Mountain schist 1

fClick series 1

Coal Creek serpentine 2

fDiabolo sandstone *

fFernandan system 1

Hazel sandstone 1 or formation

Hye granite 2

flron Mountain series 1

Lanoria quartzite 1

Legion Creek granite 2

Llano series 1

' 'Lone Grove series 1 

Long Mountain series 1

"Mason series 1 

Millicam formation 1

Oatman Creek granite 1

United States Continued 

Texas Continued

Precambrian Continued

Packsaddle schist l

Red Bluff granite 2

Red Mountain gneiss 2

Sixmile granite 1

fTexan system J

Town Mountain granite J

Valley Spring gneiss l 

Precambrian(?)

Van Horn sandstone 1 

Age(f)

fAltuda granite l 

Utah 

Recent

Ice Springs Craters flow 2 

Pleistocene

Alpine formation 2

Bonneville formation 2

Lake Bonneville group (as beds1 )

Provo formation 2 

Pleistocene (?)

Salt Creek fanglomerate : 

Pleistocene, upper

Tabernacle flow : 

Tertiary

Bullion Canyon volcanics 2

Crab Creek formation 2

Crazy Hollow formation 2

Delano Peak latite member (of 

Bullion Canyon volcanics) 2

Dry Hollow latite 2

Gray Gulch formation 8

Joe Lott tuff 2

Moroni formation 2

Mount Belknap rhyolite 2

Orient granite porphyry 2

Oro Plata granite porphyry 2

Roger Park basaltic breccia 2

fTintic andesite l 

Tertiary, upper (?)

Axtell formation *

Swansea quartz monzonite (as

rhyolite *) 

Pliocene

Barkers fanglomerate *

Huntsville fanglomerate 2 

Pliocene(?)

Cache Valley group 1

Malade Valley group l

Parunuweap formation 2 

Probably Pliocene

Salt Lake formation : 

Pliocene, upper, or Pleistocene, lower

Pavant flow 2

Sevier River formation 2 

Pliocene, lower to middle

West Spring formation 2 

Miocene to Pliocene

Collinston conglomerate 2 

Miocene(f)

Brian Head formation 2 

Miocene, middle to Oligocene(f) 

Jordan Narrows unit 2
556

United States Continued 

Utah Continued 

Oligocene

Duchesne formation 1

Halfway horizon (in Duchesne

River formation) 1 

Lapoint horizon (in Duchesne

River formation) 1 

Norwood tuff 2 

Randlett horizon (in Duchesne

River formation) 1 

Oligocene(f)

Fool Creek conglomerate 2 

Oligocene(?) to Pliocene(f)

Camp Williams unit 2 

Oligocene, lower

Park City volcanics 2 

Post-Eocene

fSunbeam monzonite 1 

Post-Eocene(f)

Fernow rhyolite 1 

Eocene or Oligocene

Duchesne River formation 1 

Eocene

Godiva limestone 1 ; see also

Goldiva limestone 1 

Goldens Ranch formation 2 

fManti beds 1

Packard quartz latite (as rhyolite J) 

fPink Cliff series J 

fRaddatz porphyry 1 

fVermilion Creek group 1 

.Eocene (?)

Eagle Hill rhyolite * 

Shaggy Peak rhyolite l 

Tickville rhyolite l 

White Sage formation 1 

Eocene, upper, or Oligocene

Bald Knoll formation 2 

Eocene, upper

Myton member 1 (of Uinta

formation) 

Uinta formation 1 

Eocene, middle or upper

Sage Valley limestone member (of

Goldens Ranch formation) 2 

Eocene, middle

Evacuation Creek member (of

Green River formation) 1 

Horse Bench sandstone bed (in 

Evacuation Creek member of 

Green River formation) 1 

Eocene, lower

Cotton formation 2 

Wasatch group 1 or formation 1 

Wasatchan series 1 

Paleocene or Eocene, lower

Cowly Canyon limestone member (of Wasatch group) 2 

Paleocene

Fayette facies (of Flagstaff formation) 2 

Joes Valley member (of North

Horn formation) 2 

Pulpit conglomerate division (of 

Almy,,conglomerate) 2

United States Continued 

Utah Continued

Paleocene Continued

Saw Mill conglomerate division 

(of Almy conglomerate) 2

Valley Mountain facies (of Flagstaff formation) 2

Willow Creek facies (of Flagstaff

formation) 2 

Paleocene, upper and lower Eocene(f)

Flagstaff limestone 1 

Cretaceous and (or) Eocene

Claron limestone l 

Cretaceous

Foxian series l

t Pinto sandstone J 

Upper Cretaceous or Tertiary, lower

fAlta granodiorite 1

t Clay ton Peak quartz diorite 1

fLittle Cottonwood granite 1 

Upper Cretaceous and Paleocene

North Horn formation 2 

Upper Cretaceous

Aberdeen sandstone member (of 

Blackhawk formation) 1

Alien Valley shale 2

Asphalt Ridge sandstone 2

Bearian series 1

Blackhawk formation 1

Bluecastle sandstone member (of 

Price River formation) west of 

Green River; member (of 

Neslen formation) east of 

Green River; (as bed *)

Blue Gate sandstone member (of 

Mancos shale) l ; sometimes 

shale member

Bob Wright coal group 1

Brownian series x

Buck tongue (of Mancos shale) 1

fCastlegate coal group (in Blackhawk formation) *

Castlegate sandstone member (of 

Price River formation) 1

Cedar Mountain formation 2

Cedar Mountain group 2

Desert member (of Blackhawk 

formation) 2

Emery sandstone member (of 

Mancos shale) J

Farrer formation (as non-coalbearing member of Price River 

formation *)

Ferron sandstone member (of 

Mancos shale) 1

Funk Valley formation 2

Garley Canyon sandstone member (of Mancos shale) 1

Grassy member (of Blackhawk 

formation) *

Henefer formation 2

Hinshaw sandstone *

Indianola formation 2 or group 2

Eaiparowits formation :
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 557

United States Continued 

Utah Continued

Upper Cretaceous^ Continued

Kelvin formation (as conglomerate »)

Kenilworth member (of Blackhawk formation) 2

Masuk member (of Mancos 

shale); (as sandstone member 

of Mesaverde formation x)

fMasuk shale (in Mancos shale) * Masukian series 1

Neslen formation (as coal-bearing 

member of Price River formation »)

Panther tongue (of Star Point 

sandstone) 1

fPennell sandstone 1

Price River formation >

Rim Rock sandstone 2

Rockport formation 1

Sanpete formation 2

Sego sandstone (as member of 

Price River formation J)

Sixmile Canyon formation 2

South Flat formation 2

fSpring Canyon coal group (in 

Blackhawk formation) 1

Spring Canyon tongue (of Star 

Point sandstone) 1

Star Point sandstone 1

Storrs tongue (of Star Point 

sandstone) 1

Straight Cliffs sandstone l

Sulphur Canyon sandstone bed 

(in Price River formation) 1

Sunnyside member (of Blackhawk formation) 2

Thompson Canyon sandstone bed 

(in Price River formation) 1

Tropic shale 1

Tununkian series 1

Tununk shale (in Mancos shale) 1 ; 

fsandstone member (of Mancos 

shale) 1

Tuscher formation 1

Wanship formation 2

Wahweap sandstone 1 

Upper Cretaceous(f)

Currant Creek formation *

Iron Springs formation 2

Marshall Creek breccia 2 

Lower Cretaceous(f)

Buckhorn conglomerate 2 

Jurassic

Homestake limestone 1 member

(of Carmel formation) 

Jurassic and Jurassic(?)

Lamb Point tongue (of Navajo 

sandstone) 2

Shurtz sandstone tongue (of 

Navajo sandstone) 2

Temple Cap member (of Navajo 

sandstone) 2

United States Continued 

Utah Continued 

Jurassic(f)

Cedar City tongue (of Kayenta 

formation) 2

fColob sandstone 1

fGray Cliff group 1

Tenney Canyon tongue (of Kayenta formation) 2

f White Cliff sandstone or group 1

fWhite Wall sandstone 1 

Upper Jurassic and Upper Cretaceous

Henryan series 1

fHenrys Ford group 1 

Upper Jurassic

Arapien shale 2

Bishop sandstone 1

Bluff sandstone (as member of 

Morrison formation l)

Brush formation 1

Brushy Basin shale member (of 

Morrison formation) J

Curtis formation 1

Duchesne limestone *

Entrada sandstone 1

fFlaming Gorge group 1

Junction limestone J

Moab sandstone member or 

tongue (of Entrada sandstone) 1

Recapture shale member (of 

Morrison formation) l

Red Mesa member (of Entrada 

formation) 2

Salt Wash sandstone member 

(of Morrison formation) 1

Summerville formation :

Twelvemile Canyon member (of 

Arapien shale) 2

Twist Gulch member (of Arapien 

shale) 2

Westwater Canyon sandstone 

member (of Morrison formation) 1

t White Cliff limestone l

Winsor formation 2 

Middle and Upper Jurassic

Carmel formation 1

San Rafael group 1 

Triassic and Jurassic

Glen Canyon group 1

fKanab sandstone l 

Triassic

Ankareh shale l , formation, or 

redbeds

Mahogany member (of Ankareh 

formation) 2

Shinarump clay l

fShinarump group 1

Shinarumpian series 1 

Triassic(f)

Hoskinnini tongue or member 

(of Moenkopi formation); (as 

tongue or member of Cutler 

formation !)
558 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Utah Continued 

Upper Triassic 

Duffin sandstone and shale (in

Chinle formation) 2 

Fire Clay Hill bentonitic shale

(in Chinle formation) 2 

Gartra grit member (of Stanaker

formation) 2 

Hartley shale and sandstone (in

Chinle formation) 2 

Leeds sandstone (in Silver Reef

sandstone member of Chinle

formation) 2 

Moss Back member (of Chinle

formation) 2 

Petrified Forest member (of

Chinle formation) 2 

Shinarump member (of Chinle

formation); (as conglomerate 1 ) 

tSilver Reef sandstone 1 

Stanaker formation 2 

Suicide grit 2 

Tecumseh sandstone (in Silver

Reef sandstone member of

Chinle formation) 2 

Trail Hill sandstone (in Chinle

formation) 2

tVermilion Cliff group 1 

Upper^ Triassic(f) 

Springdale sandstone member

(of Moenave formation) 2 

Lower Triassic

Emigration formation l 

Harrington formation 1 

Pinecrest formation 1 

Red Wash formation 2 

Shnabkaib shale member (of

Moenkopi formation) 1 or member (of Moenkopi formation) 

Sinbad limestone member (of

Moenkopi formation) 1 

Thaynes limestone 1 , formation,

or group

Timpoweap member (of Moenkopi formation) 2 

Virgin limestone member (of

Moenkopi formation) 1 

fVerkin shales 1

Woodside formation (as shale J) 

Paleozoic

Allah quartzite 2 

Orient formation 2 

Permian and Triassic

fOljeto sandstone member l (of

Moenkopi formation) 

Permian

Baby sand 1 (subsurface) 

fBogus tongue (of Cutler formation) 1 

Cedar Mesa sandstone member

(of Cutler formation)' 

Diamond Creek sandstone 1 

Gerster formation 1 or limestone 

Goodridge sand 1 (subsurface)

United States, Continued 

Utah Continued 

Permian Continued

Halgaito tongue or member (of 

Cutler formation) 1

Harrisburg gypsiferous member 

(of Kaibab limestone) l

Kirkman limestone 2

Little Loop oil sand 1 (subsurface)

Mackentire "red-beds" tongue 

(of Phosphoria formation) 2

Mendenhall sand 1 (subsurface)

t Monument Valley shale J

Organ Rock tongue or member 

(of Cutler formation) 1

Park City formation l or group

fShafer limestone 1

White Rim sandstone member

(of Cutler formation) 1 

Post-Pennsylvanian

Last Chance quartz monzonite * 

Carboniferous

Heber limestone J

Oquirrh quartzite 1

Park sandstone 1

fWeberan series 1 

Carboniferous(?)

Phelan limestone 2

Vipont limestone 2

Wardlaw shale 2 

Pennsylvanian or Permian

Arcola sand 1 (subsurface) 

Pennsylvanian and Permian

fGopdridge formation 1

Oquirrh formation 1 

Pennsylvanian

Amber sand * (subsurface)

Argenta limestone 1

Bingham quartzite '

Bullard limestone *

Butterfleld limestone member 

(of Bingham quartzite) 1

Columbus quartzite J

Commercial limestone member 

(of Bingham quartzite) 1

Elephant limestone 1

Galena King limestone 1

Goose Neck sand 1 (subsurface)

Hercules limestone l

Highland Boy limestone member 

(of Bingham quartzite) 1

Hobble formation J

Honaker sand 1 (subsurface)

Honerine limestone l

Jordan limestone member (of 

Bingham quartzite) 1

Kelly formation 2

Lenpx limestone member (of 

Bingham quartzite) 1

Maverick limestone 1

Morgan formation l

North Ada limestone 1

fOntario quartzite J

Parnell limestone 1

fPetro limestone lentil (of Bingham quartzite) 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 559

United States Continued 

Utah Continued

Pennsylvanian Continued

Phoenix limestone lentil (of 

Bingham quartzite) 1

fRambler formation 1

Round Valley limestone 2

Tilden limestone lentil (of Bingham quartzite) 1

Utah Metals limestone 1

Weber conglomerate 1

Weber quartzite 1 , sandstone, 

formation, or shale

Yampa limestone lentil (of Bingham quartzite) 1

fYampa sandstone ! 

Pennsylvanian (?)

Talisman quartzite ' 

jMisstssippzan

fHumbug limestone 1 

Mississippian and Devonian(f)

Topache limestone 1 

Upper Mississippian and Pennsylvanian

Manning Canyon shale 1 

Upper Mississippian

Brazer limestone 1 , dolomite, or 

group

Deseret limestone l

Doughnut formation 2

fGarber limestone 1

JGold Ledge porphyry 1

Great Blue limestone * or formation

Herat shale member (of Ochre 

Mountain limestone) 1

Humbug formation 1

Humbug sandstone 1

Lion Hill formation J

Long Trail shale member (of 

Great Blue formation) 1

Ochre Mountain limestone 1

Mono limestone 1

fPine Canyon limestone 1

Reed formation 1

fSilver Ledge porphyry 1

Tetro member (of Deseret limestone) ; (as limestone x )

Utah Queen formation 1

Woodman formation 1 

Lower and Upper (?) Mississippian

Benson limestone 1 

Lower Mississippian

fBuckhorn limestone 1

Hidden Treasure limestone 1

Leatham formation 2

Midridge limestone 2 

Devonian

Becks limestone 2

Beirdneau sandstone member (of 

Jefferson formation) 2

Hyrum dolomite member (of

Jefferson formation) 2 

Upper Devonian and Mississippian

t Gardner dolomite »

Pinyon Peak limestone 1

United States Continued 

Utah Continued 

Upper Devonian

Aneth formation 2 (subsurface)

City Creek limestone 2

Hades quartzite l

McCracken member (of Elbert 

formation) 2 (subsurface)

Mowitza shale ]

Victoria formation (as quartzite J) 

Middle Devonian

Guilmette formation *

Sevy dolomite 1

Simonson dolomite l 

Lower Devonian

Water Canyon formation 2 

Silurian

Dora member (of Bluebell formation) 2

Laketown dolomite 1

Noah member (of Bluebell formation) 2

fParadise limestone l 

Silurian(?) and Devonian(?)

Red Warrior limestone 1 

Middle Silurian

Bell Hill dolomite 2

Harrisite dolomite 2

Lost Sheep dolomite 2

Thursday dolomite 2 

Ordovician to Mississippian

fGodiva limestone 1

fWasatch limestone 1 

Ordovician

Chief Consolidated limestone 1

Gemini limestone 1 

Ordovician and Cambrian(?)

Grampian limestone 1 

Upper Ordovician, Silurian, and 

Devonian

Bluebell dolomite 1 

Upper Ordovician and Silurian

Beecher member (of Bluebell

formation) 2 

Upper Ordovician and (or) Silurian

Floride dolomite 2 

Upper Ordovician

Eagle member (of Bluebell formation) 2 

Middle Ordovician

Swan Peak formation (as quartzite J) 

Lower Ordovician

Box Elder limestone 1

Fillmore limestone 2

Garden City formation (as limestone J)

fGeneva quartzite 1

House limestone 2

Juab limestone 2

Kanosh shale 2

Opohonga limestone1

Wahwah limestone 2
560 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Utah Continued

Cambrian and Lower Ordovician

fEureka limestone l

f Mammoth limestone 1 

Cambrian

Busby quartzite member (of 

Langston formation) 2

Butlerville quartzite J

Dagmar limestone member (of 

Ute formation) 2

Holliday shale 1

t Milliard limestone 1

Naomi Peak limestone member 

(of Langston formation) 2

Opex formation (as dolomite J)

Pine Valley quartzite 2

Timpanogos shales 1 

Cambrian(?)

Morehouse quartzite 1

Sentinell limestone 2

Sentinell quartzite 2 

Upper Cambrian and Ordovician(f)

Chokecherry dolomite 1 

Upper Cambrian

Ajax dolomite (as limestone x )

Emerald member (of Ajax dolomite) 1

Hicks formation 1

Lamb dolomite * Notch Peak limestone 1

Orr formation 1

Weeks limestone l 

Upper and Middle(f) Cambrian

Lynch dolomite 1

Middle Cambrian to Lower Ordovician

Centennial limestone * 

Middle and Upper (?) Cambrian

Maxfield limestone ] 

Middle Cambrian

Abercrombie formation 1

Blacksmith limestone l

Bluebird dolomite 1

Bowman limestone 1

Cole Canyon dolomite l

Dagmar limestone l

Dome Canyon limestone 1

Golden Ray limestone 1

Hartmann limestone 1

Herkimer limestone *

Hodges shale member (of Bloomington formation) 1

Howell formation *

Landston formation J

Marjum limestone 1

Millard limestone 2

Swasey formation 1

Teutonic limestone 1

Trippe limestone 1

Ute limestone 1

Wheeler formation 1

Young Peak dolomite 1 

Middle and Lower(?} Cambrian

Brigham quartzite l

United States Continued 

Utah Continued

Lower and Middle Cambrian

fAlta shale 1

fOgden quartzite l

Ophir formation : or shale

fTintic slate 1 

Lower Cambrian

Barkley quartzite *

Busby quartzite :

Cabin shale 1

Dale quartzites l

fRobinson quartzite >

Tatow limestone 2

Uintan series J

Lower Cambrian and Precambrian(f)

Tintic quartzite 1 

Precambrian

Bald Mountain formation 2

Big Cottonwood formation (as 

quartzite series x )

Box Canyon member (of Mutual 

quartzite) 2

Cottonwood schists and gneisses J

Emmpns Peak quartzite 1

Farmington Canyon complex J

Little Willow series 2

Mineral Fork tillite 2

Mutual formation 2

Red Creek quartzite 1

Red Pine shale 2

fUinta quartzite and sandstone *

Uinta Mountain group : 

Vermont 

Eocene

Brandon lignite l 

Paleozoic

Belvidere Mountain amphibolite 1

Lowell Mountain formation J 

Upper Paleozoic

Plymouth granite 1 

Carboniferous

Mount Ascutney granite * 

Devonian

Barre granite J

Bethel granite 1

Calais granite l

Craftsbury granite l

Groton granite * Hardwick granite 1

Irasburg granite 1

Newark granite 1

Newport granite J

Orange granite l

Pomfret granite 1

Randolph granite 1

Ryegate granite 1

Tunbridge granite l

Vernon limestone 1

West Dummerston granite l

Williamstown granite x Woqdbury granite 1 

Devonian and Silurian(f)

Gile Mountain formation 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 561

United States Continued 

Vermont Continued 

Upper or post-Devonian

Durkee Hill greenstones * 

Upper Devonian(f)

Brocklebank granite * 

Silurian(f) and Devonian(?)

Waits River formation (as limestone l) 

Silurian or Lower Devonian

Westmore formation z 

Silurian

Barton River formation ! 

Silurian(f)

Guilford slate * 

Middle Silurian

Northfield slate l 

Middle or Lower(f) Silurian

Shaw Mountain formation 2 

Post-Ordovician

Bellows Falls granite gneiss 1 

Ordovician (see also Cambrian and 

Ordovician)

Bascom formation *

fBradford schist l

Brattleboro phyllite l

Columbian marble l

Coventry limestone 1

Fairlee quartz monzonite (as 

granite gneiss l)

Memphremagog slate l

fMontpelier slate 1

Moretown formation * Morgan Corners formation l

Orleans phyllite 1

Vershire schist l

f Washington limestone '

Woodstock schist * 

Ordovician and Cambrian(?)

Stowe formation * 

Ordovician(?)

Irasburg conglomerate 1

Waterford slate l 

Upper Ordovician(?)

Bird Mountain grit l 

Middle Ordovician to Upper 

Devonian

Vermont sequence * 

Middle Ordovician

Addison formation *

Beldens formation *

Burchards limestone 2

Carman quartzite *

Chipman group *

Cram Hill formation *

Harlow Bridge quartzite member 

(of Cram Hill formation) 2

Hortonville slate 1

Hyde Manor limestone l

Larrabee member (of Glens Falls 

formation) *

Maquam group !

Middlebury limestone *

Orwell limestone 2

Randolph phyllite l

United States Continued 

Vermont Continued

Middle Ordovician Continued

Shoreham member (of Sherman 

Fall formation) *

Sudbury marble 1

West Rutland marble l

Weybridge member (of Beldens 

formation) 2

Whipple member (of Berkshire 

schist) 2

Youngman formation 2 

Middle Ordovician(f)

Meetinghouse slate 2

Standing Pond volcanics 2 

Lower or Middle Ordovician

Walloomsac slate ' 

Lower and Middle Ordovician

Highgate Springs series 1

Isle La Motte marble 1 

Lower Ordovician

Albany conglomerate *

Boardman formation s

Bridport dolomite 2

Cassin formation x

Corliss conglomerate '

Coventry conglomerate x

Cutting dolomite 2

Fort Cassin formation x

Georgia slate '

Grandge slate 2

Ira slate '

Isle La Motte sandstone l

Monastery formation l

Morses Line slate 2

Northfield conglomerate *

Poultney slate '

Province Island limestone 2

Shelburne marble *

Sutherland Falls marble * Wing conglomerate l 

Cambrian or Lower Ordovician

Turkey Mountain member (of 

Hoosac formation) (J. B. 

Thompson, Jr., 1952, Geol. 

Soc. America Guidebook for 

field trips in New England, p. 

41) 

Cambrian and Ordovician

Dorset limestone l

fEolian limestone l

Grahamville formation 2

Whetstone Hill member (of Moretown formation)* 

Cambrian

Barnard gneiss 1

Newbury granite gneiss l

Ottauquechee formation 1 

Cambrian(?)

Pico Peak series 2

Plymouth Union series *

Springfield conglomerate * 

Upper Cambrian

Bethel group *

Bethel schist 1
562 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Vermont Continued

Upper Cambrian Continued

Cavendish schist l

Clarendon Springs dolomite '

Gorge formation 1

Hungerford formation 2

Lunenburg schist * Milton dolomite l

fMissisquoi formation *

Reading gneiss 1

Rockledge limestone breccia *

Russell slate *

Saxe Brook formation 8

Williston limestone l 

Upper Canibrian(?)

Gassetts schist 1

Halifax chlprite schist *

Heartwellville schist l

Highgate slate 1

Missisquoi schist l

Readsboro schist * Whittingham schist l 

Middle or Upper Cambrian

Skeels Corners formation 2 

Middle Cambrian

Boucher formation !

Mill River conglomerate 1

St. Albans slate 1 

Middle(?) Cambrian

Rugg Brook dolomite conglomerate l

Lower Cambrian to Lower Ordovician

fSwanton conglomerate l 

Lower Cambrian

Barker quartzite 1

Battell member (of Monastery 

formation) 8

Beebe limestone l

Bennington quartzite 1

Bomoseen grit l

Brezee phyllite 1

Brigham Hill graywacke *

Bull slate 1

tColchester formation 1

Connor facies (of Dunham dolomite) 2

Danby formation >

fGeorgian epoch or series 1

Granville formation 2

Hancock member (of Pinney 

Hollow formation) 2

Hooker slate 1

Hubbardton slate 1

Mallet dolomite l

Monastery formation * Monkton quartzite 1

Noah Parker horizon l

Parker slate l

Pine Hill quartzite *

Pinney Hollow schist l

Plymouth conglomerate l

Plymouth marble l

Rutland dolomite 1

Sherburne conglomerate 1

United States Continued 

Vermont Continued

Lower Cambrian Continued

Stiles phyllite 1

fSwanton marble l

fSwanton slate 1

Tyson member (of Monastery 

formation) *

fVermont formation l or quartzite 1

Wallace Ledge formation * Wallingford dolomite 1

Winooski marble 1

Zion Hill quartzite l 

Lower Cambrian(?)

Brackett member (of Stowe formation) *

Sherman marble * 

Precambrian

Forestdale marble 1

Green Mountain gneiss l

Harmon Hill gneiss *

Lana conglomerate 1

Lana shale l

Mendon dolomite l

Mendon schist l

Moosalamoo phyllite 1

Mount Holly gneiss 1

Nickwaket graywacke 1

Ripton conglomerate *

Rochester quartzite *

Romance arkose *

Saltash formation !

Stamford granite gneiss * Westford schist !

Wilcox formation !

fWoodford gneiss 1 

Precambrian(f)

East Mountain schist *

Fairfax schist *

Averill granite '

Beadle Green granite l

Black Mountain granite *

Bull Hill gneiss 1

Kirby granite l

Knox Mountain granite l

Roll Quarry limestone l 

Virginia 

Pleistocene

fDismal Swamp formation l

f Franconia gravel 1

Princess Anne formation ' 

Pleistocene or Pliocene(?)

fAppomattox formation l

t Norfolk formation l 

Miocene

Bermuda earth *

fRichmond earth 1

fVirginian * [deposits] 

Miocene, upper

Yorktown formation 1 

Eocene, upper

Chickahominy formation 2 (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 563

United States Continued 

Virginia Continued 

Eocene, lower and middle 

Pamunkey group 1 

Woodstock greensand marl member (of Nanjemoy formation) 1 

Eocene, lower

Aquia formation 1 or greensand 

Paspotansa greensand marl 

member (of Aquia formation) ' 

Lower Cretaceous

' Aquia Creek series 1 

' Brooke formation *

 Fredericksburg sandstone 1 

' James River series 1

 Mount Vernon series 1

' Rappahannock series l 

Upper Triassic

fBorder conglomerate 1

Boscabel boulder beds 1

Bull Run shales l

Chesterfield group 1

Otterdale sandstones *

Tuckahoe group * Vinita beds l 

Paleozoic(f)

Arch marble 2

Archer Creek formation 2

Candler formation 2

Evington group 2

Joshua schist 2

Max Meadows fault breccia !

Mount Athos formation 1

Pelier schist 2

Slippery Creek greenstone 2 

Upper Paleozoic

Petersburg granite 1 

Pennsylvanian

Dismal conglomerate lentil (in 

Dismal formation) * Dismal formation >

Panther conglomerate l

fPocahontas group l

Pocahontas sandstone 1 

Middle Pennsylvanian

Addington sandstone member 

(of Wise formation) 1

Gladeville sandstone 1

McClure sandstone member 

Norton formation) 1

Norton formation 1

Wise formation l 

Lower and Middle Pennsylvanian

Lee formation 1 or group 

Lower Pennsylvanian

Bald Rock conglomerate member 

(of Lee formation) 1

Pocahontas formation l

Sequoyah formation 1

Tellowa formation *

(of

Bent limestone (in Bluestone formation) l

Broad Ford sandstone (in Pocono 

sandstone) *

United States Continued 

Virginia Continued

Mississippian Continued

Cloyd conglomerate member (of 

Price formation) 2

Falls Mills limestone (in Hinton 

formation) *

Falls Mills sandstone (in Hinton 

formation) 1

Falls Mills shale (in Hinton formation) l

Graham limestone (in Bluefield 

formation) 1

Graham sandstone (in Bluefield 

formation) 1

Graham shale (in Bluefield formation) l

fMontgomery buhr, grits, .or 

sandstone 1

Mud sandstone (in Bluestone 

formation) * Mud shale (in Bluestone formation) i

fPulaski shale ' 

Upper Mississippian

Bluestone formation *

fCove Creek limestone 1

fFido sandstone 1

Hinton formation '

Little Valley limestone * Maccrady shale l

Pennington shale, 1 formation, or

group 

Lower Mississippian

Price sandstone l, formation, or

siltstone

Upper Devonian and Lower Mississippian

Big Stone Gap shale 1 

Upper Devonian

Hilton shale member (of Portage 

formation) *

Jennings formation l

Kimberling shale '

Walker shale 1 

Middle and Upper Devonian

Millboro shale 2 

Lower Devonian

Clifton Forge sandstone member 

(of Keyser limestone) 1

Craigsville limestone 1

Healing Springs sandstone member (of New Scotland limestone) 1

Longdale limestone *

fMonterey sandstone l

Rocky Gap sandstone l

Saltville chert l 

Silurian or younger

Bremo quartzite 2 

Silurian and Lower Devonian

Giles formation 1 

Silurian

Crabbottom sandstone (in Wills 

Creek formation) 2

504835 5S
564 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Virginia Continued 

Silurian Continued

flngles conglomerate member J

(of Price formation) 

Middle Silurian

Cacapon sandstone member (of 

Clinton formation) *

Iron Gate facies (of Clinton formation) 2 

Lower Silurian

Hagen shale member (of Clinch 

sandstone) 2

Poor Valley Ridge member (of

Clinch sandstone) 2 

Post-Ordovician

Stafford Store quartz monzonite * 

Upper Ordovician and Silurian

fMassanutten sandstone l 

Upper Ordovician

Arvonia slate 1

House Mountain shales 1

Quantico slate 1 

Middle Ordovician

Benbolt limestone 2

Ben Hur limestone *

Blackford formation 2

Bolarian series 2

Botetourt limestone member (of 

Edinburg formation) 2

Bowen formation 2

Burkes Garden limestone member (of Benbolt limestone) 2

Cliffield formation 2

Collierstown limestone 2

Dot limestone 2

Edinburg formation 2

Effna limestone 2

Eggleston limestone 1

Elway limestone 2

Five Oaks limestone member (of 

Cliffield formation) 2

Gratton limestone 2

Hardy Creek limestone 2

Hurricane Bridge limestone 2

Lantz Mills facies (of Edinburg 

formation) 2

Lexington limestone l

Lincolnshire limestone 2

Martin Creek limestone * Moccasin limestone l or formation

New Market limestone 2

Oranda formation 2

Peery limestone member (of 

Cliffield formation) 2

Poteet limestone 2

Rob Camp limestone 2

Rockdell limestone 2

St. Glair facies (of Murfreesboro 

formation) 2

St. Luke limestone member (of 

Edinburg formation) 2

Shannondale limestone member 

(of Benbolt limestone) 2

Thompson Valley limestone 2

United States Continued 

Virginia Continued

Middle Ordovician -Continued

Tumbez limestone 2

Walker Mountain sandstone 

(of Moccasin formation) 

(Charles Butts and R. S. Edmundson, 1943, Geol. Soc. 

America Bull., v. 54, no. 11, 

p. 1678)

Ward Cove limestone member 

(of Cliffield formation)*

Wardell formation 2

Whistle Creek limestone 2

Witten limestone 2

Woodway limestone * 

Lower and Middle(?) Ordovician

Pearisburg limestone 1 

Lower Ordovician

Draper dolomite member (of 

Nittany formation) 2

Everona limestone'

fLiberty Hall limestone *

JMurat limestone *

Narrows chert (in Beekmantown 

limestone) 1

Oglesby marble member (of

Nittany formation)* 

Cambrian

Mechunck limestone 1

Oronoco formation 3 

Upper Cambrian

Chances Branch dolomite member (of Maynardville limestone) 2

Low Hollow limestone member

(of Maynardville limestone) 2 

Middle and Upper Cambrian

fNatural Bridge limestone 1 

Middle Cambrian

Honaker limestone or dolomite ' 

Lower and Middle Cambrian

tBuena Vista shale 1

Graysonton formation *

t Russell formation * 

Lower Cambrian

Austinville dolomite member (of 

Shady dolomite) 2

Ivanhoe limestone member (of 

Rome formation); (as member 

of Shady dolomite x)

Loudoun formation l

Patterson limestone member (of 

Shady dolomite) 1

fSherwood limestone 1

Snowden member (of Harpers

formation) 2 

Precambrian

Abbyville gabbro l

Air Point granite l

Amelia-Goochland quartz monzonite gneiss l

Buffalo granite *

Carsonville granite 2

Cartersville granite *

fColumbia granite 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 565

United States Continued 

Virginia Continued

Precambrian Continued

Crest Hill granite 2

Elk HU1 complex 1

Fauquier formation *

Fredericksburg gneiss 1

Fredericksburg granite 1

Goshen schist 1

Grayson granodiorite gneiss (as 

granite gneiss 1 )

Hyco quartz porphyry 1

Leatherwood granite '

Locust Grove diorite *

Locust Grove granite 1

Lovingston granite gneiss l

Lynchburg gneiss l

Marshall granite 1

Melrose granite facies (of Columbia granite) 1

Moneta biotite - hornblende 

gneiss !

Monticello rhyolites 1

Monticello schist * Mount Athos greenstone l

Occoquan granite l

Old Rag granite 1

Pedlar formation 2

Redoak granite '

Rockfish conglomerate l

Roseland anorthosite 2

Schuyler soapstone >

Shelton granite gneiss l

Somerville granite *

State Farm gneiss 2

Striped Rock granite *

Swift Run formation *

Virgilina group, volcanic group, 

or greenstone l

Warrenton agglomerate member

(of Catoctin series) * 

Precambrian(?)

Neabsco Run diorite *

Point Lookout granite * 

Age(?)

Charlottesville formation 2

East Waynesboro formation *

Esmont slate facies (of Candler 

formation) 2

Flat Rock Creek granite 2

Johnson Mill graphite schist 2

Lydia granodiorite 2

Mount Jefferson sandstone member (of Rockfish conglomerate) *

fSheep Rock conglomerate *

Swannanoa formation 2 

Washington 

Quaternary

Dogs Head andesites *

Drumheller silts 2

Glacier Peak volcanics *

Goat Rock pyroclastic deposits 2

Mount Baker lava 1

Mount Rainier lavas l

Mount St. Helens lavas 2

United States Continued 

Washington Continued 

Recent

Colwood formation * 

Pleistocene

Admiralty dirft * or clay

Arlington gravel member (of 

Vashon drift) 2

Cowiche gravel 1

fDouty gravel 1

Esperance sand member (of 

Vashon drift) 2

Gale sand' 1

Logan Hill formation 2

Marysville sand member (of 

Vashon drift) 2

Midland sand *

Nespelem silt 1

Okanogan l (till)

Orting drift (as gravel ')

Osceola clay 1

fOsceola glacial drift 1

Palouse formation 1

Pilchuck clay member (of Vashon 

drift) 2

Puyallup formation (as sand !)

Queets beds 2

Ringold formation l

Satsop formation 1

Steilacoom gravel '

Stillaquamish sand member (of 

Vashon drift) 2

Taholah formation 2

Tieton andesite 1

Tiflis member (of Wahluke formation) 2

Touchet beds 2

Vashon drift * Wahluke formation !

Willapa clays ! 

Tertiary

Camas basalt *

Cathedral granite l

Cloudy Pass diorite *

Tiger formation 2 

Tertiary (f)

Palmer volcanics *

Phalen Lake volcanics 1

Underwood lava 1 

Tertiary, upper (f)

Pend Oreille Valley andesite ! 

Pre- Tertiar y

Mount Stuart granodiorite '

Peshastin formation 1 

Pre-Tertiar y(f)

Newaukum series 1 

Pliocene

Quinalt formation '

Soleduck formation * 

Pliocene(f)

Hoko formation l

Howson andesite '

Raft River formation l 

Miocene or Pliocene

Snipes conglomerates 2

Sugarloaf andesite 2
566 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Washington Continued

Miocene or Pliocene Continued

Summit conglomerate 2 

Miocene and Pliocene

Elephant Mountain flow 2

Selah Butte flow 2

Skamania andesite series 2 

Miocene

Browns Point formation 3

Clallam formation 1

Eagle Creek formation 1

Fifes Peak andesite 2

Hammer Bluff formation l

Selah tuff member (of Ellensburg 

formation) 2

Silver Star granodiorite 2

Squaw Creek diatomite member 

(of Yakima basalt) 2

Taneum andesite 1 

Miocene and Oligocene(f)

Hoh formation ! 

Miocene(f)

Howard arkose 1

Quillayute formation l 

Miocene, upper, and Pliocene, lower

Ellensburg formation l 

Miocene, upper

Enumclaw volcanic series 1

Douglas Canyon formation *

Lake Vantage lavas 2

Montesano formation 1 

Miocene, middle or upper

Latah formation 1 

Miocene, lower and middle

Yakima basalt 1 member (of

Columbia River basalt) 

Miocene, lower

Chehalis formation * Wahkiakim formation 1

Wenas basalt l 

Oligocene

Blakeley formation * Gerome andesite 1

Lincoln formation * Marrowstone shale 2

Porter shale *

Restoration Point horizon *

Seattle formation 1 

Oligocene (?)

Snoqualmie granodiorite l 

Oligocene, middle

Orchard Point conglomerate 

member (of Blakeley forma- tion) 2 

Oligocene, lower

Gries Ranch formation (as horizon J); see also Greece Ranch 

horizon 1

Quimper sandstone !

Townsend shale 2 

Eocene or Miocene

West Index andesitic series 1

United States Continued 

Washington Continued 

Eocene to Miocene

Keechelus andesite series 1

Twin River formation 1 

Eocene

Bayne series l

Bellingham beds 1

Burnett formation l

Carbonado formation 1

Carbon River (coal) series 1

Chehalis sandstone l

Evans Creek coal series *

Fairfax * (coal bearing rocks)

Franklin sandstone l

Franklin series l

Guye formation 1

Kachess rhyolite l

Knob Hill andesite 2

fKittitas system l

Kummer sandstone l

Kummer series 1

Lyre formation 2

Manastash formation 1

Melmont * (coal bearing rocks)

Naches formation '

Natapoc formation *

Olequa formation 1

fPittsburg formation l

Puget group 1

Puyer formation 1

Roslyn formation '

South Prairie formation l

Sumas shales (in Chuckanut 

formation) 2

Swauk formation l

Teanaway basalt 1

Wilkeson [coal] series l

Wiikeson formation 1 

Eocene (?)

Pipestone Canyon formation 3 

Eocene, upper

Cowlitz formation '

Northcraft formation 2

Olequa Creek member (of Cowlitz formation) 2

Pe Ell volcanics member (of 

Cowlitz formation) 2

Skookumchuck formation 2

Stillwater Creek member (of

Cowlitz formation) 2 

Eocene, middle to upper

Mclntosh formation 2 

Eocene, middle and lower(?)

Crescent formation ' 

Eocene, lower

Chuckanut formation l 

Mesozoic

Kruger Mountain malignite * Whiskey Mountain granodiorite 2 

Cretaceous

Cle Elum formation 2

Winthrop sandstone !
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 567

United States Continued 

Washington Continued 

Cretaceous (?)

Bogachiel formation 1

Loon Lake granite 1

Soleduck formation 1 

Probably Cretaceous

fColville granite * or granodio- rite 1 

Upper Cretaceous

Midnight Peak formation 2 

Lower and Middle Cretaceous

Virginian Ridge formation 2 

Lower Cretaceous

Pasayten formation 1

tSimilkameen formation *

Spieden formation 1 

Jurassic

Tye granite 1 

Jurassic(f)

Eagle Cliff porphyrite l

Index granodiorite l

Meteor granodiorite 1

Osoyoos granodiorite 1

Remmel granodiorite * 

Upper Jurassic

Shuksan formation 2

Turtleback complex * 

Upper Jurassic(f)

Chelan granodiorite * 

Pre-Jurassic

Hawkins formation l 

Triassic(f)

Fidalgo formation l

Newby formation 2

Ventura formation l 

Upper Triassic

Haro formation 1 

Paleozoic

Ghewalah argillite >

Colville quartzite * Deer Lake argillite 1

Eagle Mountain quartzite l

Old Dominion limestone 1 

Paleozoic(f)

Boundary argillites 1

Cedar Creek argillite *

Clugston limestone 1

Deep Lake argillite l

Fish Creek argillite *

Lead Point argillite 1

Mission argillite 1

Red Top limestone l

Republican Creek limestone *

Stevens series * 

Upper Paleozoic or Mesozoic

Jumbo volcanics 1

Sheep Creek conglomerate 1 

Carboniferous

Hozomeen series *

Leech River group * 

Carboniferous (?)

Chopaka basic intrusives '

Chopaka schist 1

Gunn Peak formation 1

United States Continued 

Washington Continued

Pennsylvanian and (or) Permian

Granite Falls limestone 2 

Devonian and Carboniferous

San Juan series l

Probably Devonian, Carboniferous, 

and Mesozoic

Covada group l

Upper and Middle(f) Devonian and 

JVi. ississippian

Orcas group 1 

Ordovician

Ledbetter slate 2

Maloney metamorphic series 1 

Pre-Ordovician^f) or Carboniferous(f)

Easton schist 1 

Pre-Ordovician

Chiwaukim schist 2

Swakane gneiss ! 

Pre-Ordovician (?)

Buckskin schist 2

Fernow gneiss 2

Martin Ridge schist 2 

Cambrian

Gypsy quartzite 2 

Middle Cambrian

Metaline limestone or formation2

Northport limestone l 

Lower or Middle Cambrian

Maitlen phyllite 2 

Lower Cambrian

Addy quartzite l 

Precambrian

Bead Lake formation 2

Buffalo Hump formation 2

Deer Trail group (as argillite l)

Edna dolomite 2

Huckleberry formation (based 

on Huckleberry conglomerate 2 

and Huckleberry greenstone 2)

Leola volcanics 2

McHale slate 2

Moon Hill quartzite member (of 

Skookum formation) 2

Newport group 2

No Name argillite 2

Shedroof conglomerate 2

Skookum formation 2

Stensgar dolomite (as dolomite 

member 1 )

Togo formation 2 

Precambrian(f)

Marshall diorite 2

Orient gneiss l

Ribbon gneiss 1

Carson lava 1 

Leecher metamorphics 2 

Methow gneiss 2 

West Virginia 

Pleistocene

Barboursville silts 2 

Teay formation 1 

Pliocene(?)

Shepherdstown gravel 1
568 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

West Virginia Continued 

Permian

Bellton coal group (in Greene and 

Washington formations) 1

Bristol limestone (in Washington 

formation) l

Burton sandstone (in Greene 

formation) l

Cassville shale member (of 

Washington formation) 1

Creston shale (in Washington 

formation) 1

Dolls Run sandstone (in Washington formation) 1

Elm Grove limestone member 

(of Washington formation) 1

Fish Creek shale (in Greene 

formation) l

Gilmore limestone (in Greene 

formation) 1

Hundred sandstone (in Washington formation) 1

Mannington sandstone (in Washington formation) 1

Proctor sandstone (in Greene 

formation) 1

Rockport limestone (in Greene 

formation) l

Rush Run sandstone (in Greene 

formation) l

St. Cloud sandstone (in Greene 

formation) l

Shannon Run limestone (in 

Washington formation) l

Washington fire clay shale (in

Washington formation) l 

Pennsylvanian

Albright limestone (in Conemaugh formation) 1

Ames shale (in Conemaugh formation) 1

Annabelle shale (in Monongahela formation) 1

Arnoldsburg limestone (in 

Monongahela formation) 1

Arnoldsburg sandstone (in 

Monongahela formation) 1

Bald Knob shale (in Kanawha 

formation) 1

Bens Creek sandstone (in 

Kanawha formation) 1

Blackwater shale and limestone 1

Braxton formation 1

Breedon sand l (subsurface)

Brownstown sandstone (in Kanawha formation) 1

Brush Creek fire clay shale (in 

Conemaugh formation) 1

Brush Creek shale (in Conemaugh formation) 1

Buffalo Creek limestone (in Kanawha formation) 1

Burning Springs sand J (subsurface)

United States Continued 

West Virginia Continued 

Pennsylvanian Continued

Cairo gas, silt, or oil sand x (subsurface)

Cambridge red bed (in Conemaugh formation) 1

Campbell Creek limestone (in 

Kanawha formation) 1

Campbell Creek (Lower) sandstone (in Kanawha formation) l

Canaan Mountain fire clay l

Cannelton limestone (in Kanawha formation) 1

Cannelton shale (in Kanawha 

formation) 1

Carroll sand l (subsurface)

Cedar Grove sandstone (in Kanawha formation) l

Cedarville sandstone (in Monongahela formation) 1

Charleston sandstone l

Chilton sandstone (in Kanawha 

formation) l

Clark formation 1

Clarksburg fire clay shale (in 

Conemaugh formation) 1

Clarksburg red shale (in Conemaugh formation) 1

Cleveland sandstone (in Kanawha formation) 1

Coalburg sandstones (in Kanawha formation) 1

Coalburg shale (in Kanawha formation) 1

Corinth sandstone (in Conemaugh formation) 1

Decota sandstone (in Kanawha 

formation) 1

Dingess limestone (in Kanawha 

formation) l

Dingess sandstone (in Kanawha 

formation) 1

Dingess shale (in Kanawha formation) 1

Dorothy limestone and shale (in 

Kanawha formation) 1

Dotson sandstone 1

Dotson (Lower) sandstone l

Douglas shale (in Kanawha formation) x

Eagle limestone (in Kanawha 

formation) 1

Eagle sandstone (in Kanawha 

formation) 1

Eagle shale (in Kanawha formation) 1

East Lynn sandstones (in Allegheny formation) l

Eckman sandstone (in Pottsville 

group) 1

Elk fire clay (in Conemaugh formation) x

fElkgarden formation 1

fElk River series l

Fairfax formation !
INDEX TO THE GEOLOGIC NAMES OF NORTH AMEKICA 569

United States Continued 

West Virginia Continued 

Pennsylvanian Continued

Fairfax limestone *

fFayette sandstone *

Flattop Mountain sandstone 1

Gilbert sandstones (in Kanawha 

formation) 1

Gilbert shale (in Kanawha formation) x

Grafton sandstone (in Conemaugh formation) 1

Grampus 1 (sand) (subsurface)

Grapevine sandstone (in Kanawha formation) 1

Guayandot sandstone (in Sewell 

formation) l

Hammond fire clay (in Kanawha 

formation) l

Hardman fire clay (in Allegheny 

formation) l

Hartridge shale 1

Harvey conglomerate lentil (in 

Sewell formation) * Hernshaw sandstone (in Kanawha formation) 1

Homewood (Lower) sandstone 

(in Kanawha formation) 1

Horseneck sand l (subsurface)

Horsepen 1 (coal group)

Hughes River flint (in Conemaugh formation) 1

laeger sandstones (in New River 

formation) l

Indian Gap limestone (in Kanawha formation) *

Irondale limestone (in Conemaugh formation) 1

Island Run sand 1 (subsurface)

Jane Lew sandstone (in Conemaugh formation) l

Kanawha black flint (in Kanawha formation) 1

Keystone sandstone 1

Landgraff sandstone (in Pocahontas formation) 1

fLogan sandstone (in Kanawha 

formation) 1

Maiden sandstones (in Kanwha 

formation) l

Mason shale (in Conemaugh formation) l

Matewan sandstone (in Kanawha 

formation) 1

Minshall sand l (subsurface)

Mona limestone (in Conemaugh 

formation) 1

Monitor sandstone (in Kanawha 

formation) 1

Monitor (Lower) sandstone (in 

Kanawha formation) 1

Moundsville sand ! (subsurface)

Murphy sand 1 (subsurface)

Naugatuck sandstone (in Kanawha formation) l

United States Continued 

West Virginia Continued 

Pennsylvanian Continued

Newlon limestone and shale (in 

Kanawha formation) 1

fNew River coal series 1

fNew River system 1

North Fork shale l

Nuttall (Lower) sandstone 1

Oceana limestone (in Kanawha 

formation) l

Orlando limestone (in Conemaugh formation) 1

Peerless sandstone (in Kanawha 

formation) l

Pickens sandstone 1

t Piedmont sandstone (in Pottsville formation) 1

Pierpont sandstone x

Pineville sandstone l

Piney Creek conglomerate 1

Quakertown slate (in Kanawha 

formation) l

tQuinnimont beds or coal group 1

Quinnimont sandstone 1

Raymond limestone (in Monongahela formation) 1

Rich Mountain conglomerate l

Rift shale 1

Ritchie red beds (in Monongahela formation) 1

fRoaring Creek sandstone (in 

Kanawha formation) 1

Rosedale gas sand 1 (subsurface)

Royal formation l

Royal shale 1

Ruffner fire clay (in Allegheny 

formation) 1

Sandy Huff shale 1

Seth limestone (in Kanawha 

formation) l

Skelt shale 1

Stockton limestone (in Kanawha 

formation) l

Stockton shale (in Kanawha 

formation) 1

Stockton slate (in Kanawha 

formation) 1

Summers series !

Sutton limestone (in Conemaugh 

formation) 1

Thornton fire clay (in Conemaugh 

formation) l

Twomile limestone (in Conemaugh formation) 1

Tyler red beds (in Monongahela 

formation) 1

Vivian sandstone * War Eagle sandstone (in Kanawha formation) 1

Welch sandstone 1

Weston sandstone (in Monongahela formation) 1

Weston shale (in Monongahela 

formation) 1
570 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

West Virginia Continued 

Pennsylvanian Continued

Wharncliffe sandstone 1

Wheeling group 1

Williamson sandstone (in Kanawha formation) 1

Winifrede limestone (inKanawha 

formation) l

Winifrede sandstone (in Kanawha formation) 1 

Upper Pennsylvanian

Benwood limestone member (of 

Monongahela formation) l

Clarksburg limestone member 

(of Conemaugh formation) 1

Fulton shale member (of Monongahela formation) 1

Gilboy sandstone member (of 

Monongahela formation) 1

Morgantown sandstone member 

(of Conemaugh formation) 1

Uffington shale member (of Conemaugh formation) 1 

Middle Pennsylvanian

Kanawha formation 1

Pugh formation *

Quinnimont shale '

Thurmond formation '

Upshur sandstone ' 

Lower Pennsylvanian

Bayard formation *

Bear wallow conglomerate 1

Blackwater formation 1

New River formation (as group l 

or series J)

Nuttall sandstone member (of 

Sewell formation) 1

Raleigh sandstone 1

Sequoyah formation l

Sewell formation 1

Teilowa formation 1

Welch formation 1 

Mississippian

Ada shale (in Bluefield formation) 1

Alderson limestone (in Greenbrier 

limestone) l

Anawalt sandstone 1

Avis limestone (in Hinton formation) x

Avis sandstone (in Hinton formation) 1

Avis shale (in Hinton formation) »

Ballard Harmon sandstone 1

Beckett sand l (subsurface)

Belcher sandstone (in Bluestone 

formation) 1

Belcher shale (in Bluestone formation) l

Bellepoint limestone (in Hinton 

formation) 1

Bellepoint sandstone (in Hinton 

formation) 1

United States Continued 

West Virginia Continued 

Mississippian Continued

Bellepoint shale (in Hinton formation) 1

Bent sandstone (in Bluestone 

formation) 1

Bent shale (in Bluestone formation) 1

Bertha sandstone (in Bluefield 

formation) 1

Bertha shale (in Bluefield formation) 1

Bickett shale (in Bluefield formation) 1

Big Spruce Knob sandstone 1

Big Spruce Knob shale l

Bradshaw limestone (in Bluefield 

formation) 1

Bradshaw sandstone (in Bluefield formation) 1

Bradshaw shale (in Bluefield 

formation) 1

Bratton sandstone (in Bluestone 

formation) l

Bratton shale (in Bluestone formation) l

fCanaan formation1

Clayton sandstone (in Bluefield 

formation) 1

Clayton shale (in Bluefield formation) 1

Coney limestone (in Bluefield 

formation) x

Coney shale (in Bluefield formation) 1

Dawson sand 1 (subsurface)

Denmar formation !

Droop sandstone (in Bluefield 

formation) 1

Edray sandstone (in Bluefield 

formation) 1

Five mile shale (in Hinton formation) » Glady Fork sandstone (in Blue 

stone formation) 1

Glenray limestone (in Bluefield 

formation) >

Goodwyn sandstone (in Hinton 

formation) 1

Goodwyn shale (in Hinton formation) l

f Greenbrier series *

fGreenbrier shales l

Greenville shale (in Greenbrier 

limestone) 1

Hackett sandstone (in Hinton 

formation) x

Hackett shale (in Hinton formation) 1

Hartwell sandstone l

fHinton limestone (in Hinton 

formation) 1

Hinton sandstone 1

Hunt sandstone (in Bluestone 

formation) l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 571

United States Continued 

West Virginia 'Continued 

Mississippian Continued

Hunt shale (in Bluestone formation) l

Indian Mills sandstone (in Bluefield formation) *

Indian Mills shale (in Bluefield 

formation)J

Keener sand l (subsurface)

fLewisburg limestone 1

Lillydale shale (in Bluefield formation) l

Lindside sandstone (in Pocono 

sandstone) l

Low Gap limestone (in Hinton 

formation) 1

Low Gap sandstone (in Hinton 

formation) 1

Low Gap shale (in Hinton formation) 1

Maxton sand J (subsurface)

Pageton sandstone l

Patton limestone (in Greenbrier 

limestone) 1

Patton shale (in Greenbrier limestone) l

Payne Branch sandstone (in 

Hinton formation) 1

Payne Branch shale (in Hinton 

formation)l

Pickaway limestone (in Greenbrier limestone) 1

Pipestem shale (in Bluestone formation) 1

Pluto limestone (in Hinton formation) l

Pluto shale (in Hinton formation) 1

Possumtrot shale (in Bluefield 

formation) l

Pride shale (in Bluestone formation) 1

Raines Corner limestone (in 

Bluefield formation) 1

Raines Corner shale (in Bluefield 

formation) l

Reynolds limestone (in Bluefield 

formation) 1

Rouzer sand 1 (subsurface)

Sinks Grove limestone (in Greenbrier limestone) 1

Taggard limestone (in Greenbrier 

limestone) 1

Talcott shale (in Bluefield formation) 1

Tallery limestone (in Hinton 

formation) 1

Tallery sandstone (in Hinton formation) l

Tallery shale (in Hinton formation) 1

Terry limestone (in Hinton formation) 1

Terry shale (in Hinton formation) 1

United States Continued 

West Virginia Continued 

Mississippian Continued

Tophet sandstone (in Hinton 

formation) 1

Tophet shale (in Hinton formation) 1

Union limestone (in Greenbrier 

limestone) 1

Webster Springs sandstone (in

Bluefield formation) 1 

Upper Mississippian

Bent Mountain member (of Bluestone formation) J

Bluefield shale 1 or formation

Greenbrier limestone l

Hillsdale member (of Greenbrier 

limestone) 1

Mud Fork member (of Bluestone 

formation) 2

Taggard red member (of Greenbrier limestone) (as shales J)

Stony Gap sandstone member 

(of Hinton formation) 1

Princeton sandstone 1 

Lower Mississippian

Hedges shale 1

Myers shale 1

Pinkerton sandstone l

Purslane sandstone l

Rockwell formation l 

Upper Devonian

Benson sand 1 (subsurface)

Burnside sand 1 (subsurface)

Childress sand 1 (subsurface)

Elkins sandstone l

Hampshire formation x

Hendricks sandstone l

Riley sand 1 (subsurface)

Rowlesburg sandstone (in Chemung 

formation) l

Valley Head sandstone l

Whetstone Run sand 1 (subsurface)

Woodmont shale member (of

Jennings formation) l 

Middle Devonian

Landes limestone 1

Romney shale 1 

Lower Devonian

Big Mountain shale member (of 

Keyser limestone) 1

Huntersville chert l

Keyser limestone (as member of 

Helderberg limestone l)

fLewistown chert lentil l (in 

Lewistown limestone)

Morgan series 1

Ridgeley sandstone 1 

Silurian

Williamsport sandstone l 

Middle ana Upper Ordovician

Martinsburg shale l 

Lower Cambrian

Antietam sandstone 1 or quartzite

Harpers formation (as shale J)
572 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

West Virginia Continued

Lower Cambrian to Middle Ordovician

Shenandoah limestone l 

Wisconsin

Pleistocene (Wisconsin)

fEast Wisconsin formation 1 

Two Creeks forest bed 8 

Wisconsin drift or till l 

Cretaceous or Tertiary

Windrow formation l 

Devonian 

Belgium member l (of Lake

Church formation) 

Lake Church formation l 

Middle Devonian 

Berthelet member l (of Milwaukee formation)

Lindwurm member l (of Milwaukee formation) 

Milwaukee formation 1 

North Point member l (of Milwaukee formation) 

Ozaukee member J (of Lake

Church formation) 

Thiensville formation 1 

Silurian

Byron beds l 

Iron Ridge ore bed * 

Mayville limestone l 

t Mound limestone l 

Wauwatosa formation J 

Upper Silurian

Waubaukie dolomite * 

Middle Silurian 

Racine dolomite l 

Waukesha limestone 1 

Lower Silurian

Burroughs dolomite l 

Upper Ordovician 

Neda formation l or member (of

Maquoketa shale) 

Middle Ordovician 

Beloit dolomite l 

Magnolia member (of Platteville

limestone) l 

Mifflin member (of Platteville

limestone) a

Platteville limestone l or formation

Quimbys Mill member (of Platteville formation) J 

Lower Ordovician

Genoa member (of Oneota formation) a

Hickory Ridge member (of Oneota formation) J

Mound Ridge member (of Oneota formation) a 

New Richmond sandstone * 

Prairie du Chien group 1 

Stoddard member (of Oneota

formation) J 

f Willow River limestone l

United States Continued 

Wisconsin Continued 

Cambrian 

Port Wing brownstone member

(of Orienta formation) J 

Upper Cambrian 

Arcadia member (of Trempealeau formation) J 

Birkmose member (of Franconia

formation) J 

fBlack Earth dolomite member

(of St. Lawrence formation) l 

Eau Claire grit l 

Eau Claire sandstone 1 

Devils Lake sandstone l 

Goodenough member (of Franconia sandstone) l 

Hudson member (of Franconia

sandstone) l 

fronton sandstone member (of

Franconia sandstone) l 

Lodi member (of Trempealeau

formation); (as member of St.

Lawrence formation J) 

Madison sandstone * 

Mazomanie sandstone 1 

Mendota dolomite member (of

St. Lawrence formation) l 

Mount Simon sandstone 1 

Myers Hill sandstone l 

Norwalk sandstone member (of

Jordan sandstone) * 

Sparta shale 1 

Sunset Point formation J 

Tomah member (of Franconia

formation) J

Trempealeau formation 1 

Woodhill member (of Franconia

formation) J 

Precambrian to Upper Cambrian

Sauk sequence a 

Precambrian 

Alloa rhyolite l 

Amnicon formation l 

Arpin conglomerate and quartzite !

Athelstane granite l 

Bad River dolomite x 

fBad River gabbro l 

|Bad River sandstone l 

Baraboo quartzite l 

Baraboo series * 

Barren quartzite l 

Bayfield group 1 

Berlin rhyolite gneiss l 

fBlack River iron-bearing series l 

Breakwater quartzite l 

Chequamegon sandstone l 

Chippewa quartzite l 

Conover slate 1 

Copper Creek beds 1 

Dake quartzite l 

Denzer diorite * 

Denzer tuff * 

Devils Island sandstone x 

Douglas County traps *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 573

United States Continued 

Wisconsin Continued 

Precambrian Continued

Eileen sandstone l

Endeavor granite 1

Flambeau quartzite l

Freedom dolomite l

 ( Hamburg slate 1

Junction City quartzite l

Lohrville granite 1

Lower Narrows rhyolite l

Marathon conglomerate l

Marcellon quartz porphyry l

Marion granite l

Marquette quartz prophyry l

Marquette rhyolite * Marshall Hill conglomerate 1

Mellen or High Bridge granite 1

Merrimac rhyolite 1

Montello granite l

Mosinee conglomerate l

Moundville quartz porphyry 1

Mukwa granite l

Necedah quartzite l

North Mound conglomerate and 

quartzite 1

Observatory Hill quartz porphyry > Orienta sandstone 1

Oronto group 1

Otter Creek granite l

Pence ferruginous slate member

(of Ironwood-iron formation) l

fPenokee series 1

Pike River granite l

Plymouth ferruginous chert 

member (of Ironwood-iron formation) l

f Portland quartzite 1

Powers Bluff quartzite *

Rib Hill quartzite '

Rowley Creek slate !

Rudolph quartzite l

St. Cloud granite l

Seneca quartz porphyry l

Sunday quartzite l

Utley metarhyolite l

Washburn beds l

Waterloo quartzite 1

Wausau granite l

Wausau graywacke l

Waushara granite l

f Western sandstone l

Wisconsin Valley slates l 

Age(?)

Baxter Hollow granite 8 

Wyoming 

Quaternary

Hot Springs formation 1 

Quaternary (?)

Salt Lake conglomerate l 

Recent

Kaycee formation 8

Lightning formation ' 

Recent (f)

Ucross formation 2

United States Continued 

Wyoming Continued 

Pleistocene

Arvada formation *

Buffalo drift »

Bull Lake drift »

Pinedale drift l 

Tertiary

fCarbon group l

Castle rhyolite 2

Cataract basalt 2

Clear Creek gravels 8

Elkhorn basalt 2

Lodgepole rhyolite and obsidian 8

Meadow rhyolitic tuff 2

Ramshorn volcanic series *

Sheepeaters basalt 2 

Tertiary, upper

Sylvan intrusives * 

Pliocene

fCanyon conglomerate l

fSouth Pass group l

Tower Creek conglomerate '

fYellowstone Lake group * 

Pliocene, lower

Camp Davis formation 2 

Miocene and (or) Pliocene

Canyon basalt 2

Crescent Hill basalt 8

Elk Creek basalt 2

Geode Creek basalt *

Lost Creek trachyte l

Oxbow Creek basalt * 

Miocene or Pliocene

Burnt Gulch conglomerate 2 

Miocene

Electric Peak intrusives l

Ishawooa intrusives *

Sherman diorite l

Sunlight intrusives 1 

Miocene(?)

Bishop conglomerate l

fWyoming conglomerate l 

Miocene, upper, and Pliocene, lower

Spoon Butte beds l 

PostrOligocene (?)

Caldwell Canyon volcanics 8

Hat Creek beds *

Sweetwater group *

Sweetwater member * (of White

River group) 

Wiggins formation * 

Oligocene(f)

Tatman Mountain gravels 1 

Oligocene, lower

Beaver Divide conglomerate 

member (of Chadron formation) 2

Yoder formation * 

Eocene and Oligocene

Sand Draw sandstone lentil (of

White River formation) 2 

Eocene

Bates Hole formation * 

fBitter Creek group l
574 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Wyoming Continued 

Eocene Continued

Black Rock coal group 1

Blacks Fork member (of Bridger 

formation) 1

Burnt Fork white layer 1

Green Cove beds 1

Greenian series * Hanna formation 1

Knight formation l

fPinyon Peak conglomerate 1

Twin Buttes member (of Bridger 

formation) 1

Ulm coal group (in Wasatch formation) 1

Ulm formation 1

Wagonhound member * (of Uinta

formation) 

Eocene, upper

Fowkes formation 1

Tepee Trail formation 2 

Eocene, upper(f)

Continental Peak formation 2 

Eocene, middle and upper (?)

Bridger formation l

fBridgerian series v

Lone Tree white layer 1

fWashakie formation 1 

Eocene, middle

Aycross formation 2

Cottonwood white layer x

Fontenelle member (of Green 

River formation) 2

Laney shale member (of Green 

River formation) 1

Pass Peak conglomerate 2

Sage Creek white layer 1

Tower sandstone lentil (of Green

River formation) 1 

Eocene, lower and middle

Battle Spring formation 2

Green River formation ' 

Eocene, lower

Alkali Creek 1 (red stratum in 

Wind River formation)

Cathedral Bluffs tongue (of Wasatch formation) 1

fClark Fork beds l

Cottonwood Draw banded layers J (in Wind River formation)

fGray Bull beds l

Hoback formation 2

Indian Meadows formation 3

Kingsbury conglomerate member 

(of Wasatch formation) 1

Lost Cabin member (of Wind 

River formation); (as formation i)

Luman tongue (of Green River 

formation) 2

Lysite member (of Wind River 

formation); (as formation x)

Moncrief member (of Wasatch 

formation) 4

United States Continued 

Wyoming Continued 

Eocene, tower Continued

Newberger sand 1 (subsurface) 

New Fork tongue (of Wasatch

formation) 4 

fMorrow Creek member (of

Green River formation) 1 

Niland tongue (of Wasatch formation) 2

fRalston formation l 

Red Desert tongue (of Wasatch

formation) a 

fSand Coulee beds l 

Tatman formation 1 

Tipton shale member or tongue

(of Green River formation) 1 

Wilson sand 1 (subsurface) 

Wind River formation 1 

Paleocene to Eocene

Will wood formation 2 

Paleocene

Almy formation > or conglomerate

fEvanstonian series 1

Mantua lentil (of Polecat Bench

formation) 2 

Pinyon conglomerate 1 

Polecat Bench formation a 

Rock Bench quarry beds (of

Polecat Bench formation) z 

Silver Coulee beds (of Polecat

Bench formation) 2 

Tongue River member (of Fort

Union formation) 1 

Cretaceous

Custerian series 1 

Upper Cretaceous and Paleocene 

fDe Smet formation l 

Evanston formation 1 

Ferris formation l 

fShoshone group l 

Upper Cretaceous 

Adaville formation l 

Almond formation 1 

Bacon Ridge sandstone 2 

Basin shale 1 

Baxter shale * 

tBeaver Creek chalky member

(of Niobrara formation) 1 

Belle Fourche shale member

(of Graneros shale) 1 

Black Buttes coal group l 

fBlack Butte quartzite l 

Blair formation 1 

Bow formation or group l 

Chimney Rock tongue (of Blair

formation) 2 

Cody shale l 

Elk Basin sandstone member

(of Telegraph Creek formation) 1

Ericson sandstone 1 or formation 

Fitzhugh sands 1 (subsurface) 

Frontier formation; 1 sandstone

member (of Mancos shale) in

NW Colorado and NE Utah
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 575

United States Continued 

Wyoming Continued

Upper Cretaceous Continued 

Gammon ferruginous member

(of Pierre shale) 1 

fGebo formation 1 

fGolden Wall sandstone (in Blair

formation) l 

Hailey shale l

Hilliard formation l or shale 

fllo formation l 

Kimball sand l (subsurface) 

Knobs-Cherokee coal group * 

Lance formation 1 

Lazeart sandstone member (of

Adaville formation)> 

Little Missouri lens (in Newcastle formation) 4 

fLittle Pine Ridge sandstone ! 

Medicine Bow formation l 

Meeteetse formation l 

Mitten black shale member (of

Pierre shale) 1 

Monument Hill bentonitic mem*

ber (of Pierre shale) 1 

Muddy sandstone member (of

Thermopolis shale); (as sand J) 

tNefsy shale member (of Graneros shale) 1 

Newcastle lens (in Newcastle

formation) 4 

New Haven lens (in Newcastle

formation) 4

Octh Louie sand 1 (subsurface) 

Osage lens (in Newcastle forma- tion) * 

Oyster Ridge sandstone member

(of Frontier formation) 1 

Parkman sandstone ; locally,

member 1 of several formations 

Peay sandstone member (of

Frontier formation)» 

Pedro bentonite bed (in Pierre shale) l 

Pine Ridge sandstone member

(of Mesaverde formation) 1 

Piney formation l 

fPoint of Rocks group J 

Quealy sand J (subsurface) 

Rawlins sandstone 1 

Rock Springs formation l 

Sage Breaks member (of Carlile

shale); (as shale member of

Niobrara formation !) 

tSalt Wells group 1 

Shannon sandstone member (of

Steele shale) l or member (of

Cody shale) 

Steele shale * 

fSulphur Creek group l 

Sussex sandstone member (of

Cody shale) a 

Teapot sandstone (as member of

Mesaverde formation J)

United States Continued 

Wyoming Continued

Upper Cretaceous Continued

Torchlight sandstone member 

(of Frontier formation) 1

Torrington member (of Lance 

formation) l

Turner sandy member (of Carlile shale) 1

Wall Creek sandstone member

(of Frontier formation) * 

Lower Cretaceous

Aspen shale 1

Barrett shale 1

Bear River formation :

Clay Spur bentonite bed (in 

Mowry shale) 1

fComo beds * Cloverly formation l

Greybull sandstone member (of 

Cloverly formation) >

Hay Creek formation l

Inyan Kara group 1

Mowry shale 1 or member (of 

Mancos shale)

Newcastle sandstone (as member of Graneros shale *)

Oak Creek beds 1

Skull Creek shale (as member 

of Graneros shale !)

Thermopolis shale l 

Upper Jurassic and Cretaceous

Beckwith formation l 

Upper Jurassic

fBeulah clays ! and shale l

Canyon Springs sandstone member (of Sundance formation) 4

Gypsum Spring formation 4

Hulett sandstone member (of 

Sundance formation) 4

Lak member (of Sundance formation) *

fShirley stage 1

Stockade Beaver shale member 

(of Sundance formation) 4

Sundance formation l 

Middle and Upper Jurassic

Twin Creek limestone l or formation 

Lower Jurassic

Nugget sandstone 1 

Triassic

Crow Mountain sandstone member (of Chugwater formation) 2

Little Medicine tongue (of Dinwoody formation) 1

Red Peak member (of Chugwater formation) 4

Wyopo formation 4 

Triassic (?)

fFreezeput limestone * 

Upper Triassic

Alcova limestone member (of 

Chugwater formation) 1

Jelm formation 1
576 GEOLOGIC NAMES OF NORTH AMERICA

United States Continued 

Wyoming Continued

Upper Triassic Continued 

Popo Agie member (of Chugwater formation); (as beds J) 

Lower Triassic

Dinwoody formation l 

Upper Paleozoic

Pope Springs sandstone 2 

Permian and Triassic 

Chugwater formation l 

fEmbar formation l or group l 

fTeton formation l 

Permian

Cassa group 2

Ervay carbonate member (of 

Park City formation); (as 

tongue* of Phosphoria formation »)

Forelle limestone 1 

Freezeout tongue (of Chugwater

formation) l 

Glendo shale a 

Satanka shale l 

Sybille tongue (of Phosphoria

formation) 1

Pennsylvanian, Permian, and Mississippian^) 

Hartville formation l 

Pennsylvanian or Permian

Broom Creek group a 

Pennsylvanian

Amsden formation l 

Darwin sandstone member (of 

Amsden formation); (as Dorwin !)

Fairbank formation 2 

Hayden group 2 

Meek group 2

Quadrant formation l or quartzite 1 

Reclamation group a 

Roundtop group 2 

Tensleep sandstone l 

Wendover group a 

Upper Pennsylvanian and Permian 

Casper formation 1

Sacajawea formation l 

Lower Mississippian 

fLittlehorn limestone l 

Muddy Mountain chert member 

(of Madison limestone) (J. D. 

Love, 1939, Geol. Soc. America 

Special Paper 20, p. 25) 

Devonian and Mississippian

Guernsey formation l 

Middle and Upper Devonian

Darby formation 1 

Lower Devonian

Beartooth Butte formation 1 

Upper Ordovician 

Bighorn dolomite 1 

Lander sandstone member

Bighorn dolomite) 1 

Leigh dolomite member (of Bighorn dolomite) 1

(of

United States Continued

Wyoming Continued

Middle Ordovician

Aladdin sandstone J 

Cambrian

Buck Spring formation 2

Bull Lake Creek shales l

Open Door limestone a

Shoshoni limestone l 

Upper Cambrian

Boysen formation a

Du Noir member (of Gallatin

formation) 1 

Middle Cambrian

Death Canyon member (of Gros 

Ventre formation) 1

Depass formation 1

Gros Ventre formation l 

Precambrian

Anderson phyllite l

Deep Lake metaquartzite l

French slate x

Headquarters schist l

Heart metagraywacke l

Lookout schist l

Medicine Bow Peak quartzite s

Medicine Peak metaquartzite 1

Nash marble series 1

Ranger marble 1

Seeley slate l

Seminoe formation 1

t Sheridan quartzite l

Sherman granite l

Sugarloaf metaquartzite l

Towner greenstone 1

Whalen group x 

Age(?)

Jardine "basalt" 2 

Canada 

Alberta 

Pleistocene

Drywood soil 2

Lenzie silt 2

Strathcona sand and silt s

Tofield sand 2 

Tertiary (?)

Foothills series l 

Eocene (see Upper Cretaceous or

Eocene) 

Palocene

Coalspur beds 2 

Post-Cretaceous

Ice River intrusive complex v 

Cretaceous

Allison Creek sandstone l

Bad Heart sandstone member l 

(of Smoky River formation)

Bellyan series 1

Berland River shales l

Bighorn formation x

Blood Reserve sandstone 1

Bulwark sandstone l

Cardium sandstone l

Clearwater shale 1

Crowsnest volcanics v

Dalhousie sand l (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 577

Canada Continued 

Alberta Continued 

Cretaceous Continued

Eastend formation l

Elk conglomerates *

Kaskapau member * (of Smoky 

River formation)

Lea Park formation 1

Lineham member * (of Cardium 

formation)

Peace River sandstone l

Ribstone Creek formation l

Rocky Mountain limestone l

St. John formation l

Saunders group 2

Viking sand or sandstone J (subsurface) 

Cretaceous (?)

Brazean formation l 

Upper Cretaceous or Eocene

Porcupine Hill series l 

Upper Cretaceous and Eocene (?)

Paskapoo formation * 

Upper Cretaceous

Alberta shale l

Allison formation l

Bassand member (of Bearpaw 

shale) l

Baytree member (of Cardium 

formation) 2

Belly River formation l

Birch Lake sandstone 1

Black Eagle sandstone (in Bearpaw formation) 4

Blackstone shale l

Brosseau formation 1

Chinook member (of Wapiabi 

formation) 2

Chungo member (of Brazeau formation) 4

Doe Creek sandstone (in Dunvegan formation) 2

Drumheller marine tongue (of 

Edmonton formation) 2

Dunvegan sandstone l

Edmonton formation *

Entrance conglomerate (in Edmonton formation) 2

Foremost formation l

Grizzly Bear formation l

Highwood sandstone (in Wapiabi 

formation) 2

Howard Creek sand (in Kaskapau formation) 2

Jumpingpound member (of Alberta shale) 2

Kipp sandstone (in Bearpaw 

shale) * Kneehills tuff 2

La Biche shales *

Lethbridge member (of Oldman 

formation) 2

Lloydminster shale 2 (subsurface)

Loon River shale l

Magrath sandstone (in Bearpaw 

shale) l

Canada Continued 

Alberta Continued

Upper Cretaceous Continued

Manyberries member (of Bearpaw formation) 2

Medicine Lodge member (of 

Bearpaw formation) 2

Milk River sandstone l

Mulga tongue 2 (subsurface)

Myrtle Creek formation l

Oldman formation 3

Pakan formation l

Pakowki formation 1

Pelican shale or sandstone l

Pouce Coupe sandstone (in Smoky 

River shale) 2

Ryegrass sandstone (in Bearpaw 

shale) l

St. Mary River formation l

Sawridge formation l

Shandro shale l

Solomon sandstone member (of 

Brazeau formation) 2

Tar sands l

Vanesti tongue 2

Verdigris sandstone l

Victoria sandstone l

Wapiabi shale 1

Wapiti formation l 

Lower or Upper Cretaceous

Joli Fou formation 2 

Lower and Upper Cretaceous

Blairmore formation 1 

Lower Cretaceous

Bluesky formation 2 (subsurface)

Borradaile member (of Mannville formation) 2 (subsurface)

Bull Head Mountain sandstone *

Cadomin conglomerate l

Cadotte member (of Peace River 

formation) 2

Cummings member (of Mannville 

formation) 2 (subsurface)

Deville formation 2 (subsurface)

Dina member (of Mannville formation) 2 (subsurface)

Ellerslie member (of Blah-more 

formation) 2 (subsurface)

Falher member (of Spray River 

formation) 2 (subsurface)

Grand Rapids sandstone l

Harmon member (of Peace River 

formation) 2

Islay member (of Mannville formation) 2 (subsurface)

Kootenay formation (Eootenai 

formation l of U.S.)

Looma member (of Grand Rapids 

formation 2 (subsurface)

Luscar formation l

McLeod member (of Kootenai 

formation) l

McMurray formation l

Mannville formation 2 (subsurface)
578 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued 

Alberta Continued

Lower Cretaceous Continued

Moose Mountain member (of 

Kootenay formation) 2

Mountain Park formation l

Nikanassin formation 1

Notikewin member (of Spirit 

River formation) 4

O'Sullivan member (of Mannville formation) 2 (subsurface)

Paddy member (of Peace River 

formation) 2

Pocaterra Creek member (of 

Blairmore formation) 2

St. Edouard member (of Grand 

Rapids formation) 2 (subsurface)

St. Paul member (of Grand 

Rapids formation) 2 (subsurface)

Spirit River formation 3 (subsurface)

Sunset sandstone *

Tovell member (of Mannville 

formation) 2 (subsurface)

Vanalta sand * (subsurface)

Wabiskaw member (of Clearwater formation) 2 (subsurface)

Wilrich member (of Spirit River

formation) 2 (subsurface) 

Jurassic

Conrad sandstone member (of 

Sawtooth formation) 2 (subsurface)

Crow Indian Lake member (of 

Sawtooth formation) 4 (subsurface)

Lille member (of Fernie formation) 2

Nordegg member (of Fernie formation) 2

Pigeon Creek member (of Fernie

formation) 2 

Triassic

Spray River formation l

Sprayan series 1 

Lower Triassic

Sulphur Mountain member (of

Spray River formation) 4 

Permian (see Pennsylvanian to

Permian) 

Permian and Pennsylvanian(f)

Norquay Mountain member (of 

Rocky Mountain formation) 2

Tunnel Mountain member (of

Rocky Mountain formation) 2 

Carboniferous

Banner silt (in Turner Valley 

member of Livingstone formation) 4

Baril member (of Mount Head 

formation) J

Carnarvon member (of Mount 

Head formation) 4

Canada Continued 

Alberta Continued

Carboniferous Continued

Cummings member (of Mount 

Head formation) 2

Etherington member (of Rocky 

Mountain formation) 2

Greenock formation 2

Livingstone formation J

Marston member (of Mount 

Head formation) 4

Mount Head formation s

Pekisko member (of Livingstone 

formation) 4

Rocky Mountain quartzite 1

Salter member (of Mount Head 

formation) 2

Wileman member (of Mount

Head formation) 2 

Carboniferous and Devonian(f)

Banff series l 

Pennsylvanian to Permian

Storm Creek formation * 

Mississippian and Pennsylvanian(f)

Tunnel Mountain member (of

Rundle formation) 4 

Mississippian

Bedson limestone * Debolt formation 2 (subsurface)

Dyson Creek member (of Rundle 

formation) 2

Loomis member (of Mount Head 

formation) 2

Moosehorn limestone 1

Shunda member (of Rundle formation) 2

Turner Valley member (of Tunnel Mountain formation) 2 (subsurface) 

Devonian and Carboniferous

Turtle Mountain group l 

Devonian

Beaverhill Lake formation 3 (subsurface)

Blackface Mountain shale l

Blue Ridge member (of Graminia 

formation) 2 (subsurface)

Cairn formation 4

Calmar member (of Winterburn 

formation) 2 (subsurface)

Cheviot formation 4

Chinchaga formation 8 (subsurface)

Cooking Lake member (of Woodbend formation) 2 (subsurface)

Duvernay member (of Woodbend 

formation) 2 (subsurface)

Fairholme formation 4

Graminia member (of Winterburn formation) 2 (subsurface)

Ireton member (of Woodbend 

formation) 2 (subsurface)

Keg River formation 2 (subsurface)

Leduc member (of Woodbend 

formation) 2 (subsurface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 579

Canada Continued 

Alberta Continued 

Devonian Continued

Miette member (of Minnewanka 

formation) 2

Minnewanka formation 1

Mount Wilson quartzite l

Muskeg formation 2 (subsurface)

Nisku member (of Winterburn 

formation) 2 (subsurface)

Palliser formation 2

Roche Miette limestone l

Southesk formation s

Wabamun formation 2 (subsurface)

Watt Mountain formation 8 (subsurface)

Winterburn formation 2 (subsurface)

Woodbend formation 2 (subsurface) 

Devonian (?)

Ghost River formation l 

Upper Devonian

Alexo formation *

Banffian series l

Big Valley member (of Wabamun 

formation) 2 (subsurface)

Boule limestone l

Cinquefoil limestone l

Coronach shale 1

Costigan member (of Palliser 

formation) 2

Delburne formation 2

Delia member (of Woodbend 

group) 2

Donalda formation 3

Exshaw shale 2

Fenn formation 2

Fiddle limestone l

Grosmont member (of Woodbend 

formation) 2 (subsurface)

Hondo member (of Woodbend 

formation) 2 (subsurface)

Kiln shale 1

Leahurst formation 2

Morro member (of Palliser formation) 2

Mount Hawk formation *

Perdrix shale l

Spence River shale 2 (subsurface)

Stettler member (of Wabamun 

formation) 2 (subsurface)

Territories formation 2 (subsurface)

Waterways formation 2 

Middle Devonian

Fort Vermilion member (of Slave 

Point formation) 1

Flume dolomite *

Steen River formation * (subsurface) 

Silurian

Elk Point formation > (subsurface) 

504835 59 12

Canada Continued 

Alberta Continued 

Ordovician

Sarceen series l

Skoki formation * 

Lower Ordovician

Mons formation l

Sarbach formation l 

Cambrian and Lower Ordovician(f)

Sawback formation * 

Cambrian

Barker shale l

Bosche formation l

Chetang limestone 1

Mahto sandstones 1

Sulliyanian series l

Tatei formation l (see also Tatay 

limestone *)

Thompson dolomite 1

Titkana limestone 1 

Upper Cambrian

Arctomys formation l

fBosworthian series l

Chetamon limestone l

Lyell formation l

Pika formation 2

Sawbackian series l

Snaring formation l

Sullivan formation l

Tangle Ridge formation 2 

Middle Cambrian

Eldon limestone l

Eldonian series 1

Murchison formation l

Naiset formation 2

Ptarmigan limestone l

Sunwapta Peak formation 2 

Lower Cambrian

Cavell formation l

Fairview formation *

Gog formation»

Lake Louise shale l

Louise formation x Mount Whyte formation l

Piran series l

St. Piran sandstone l

Whyte formation l 

Precambrian and (?) Lower Cambrian

Jonas Creek formation 2 

Precambrian

Albertian series l

Athabasca sandstone l

Blackfoot Canyon facies (of Belt 

series) 2

Carthew member (of Altyn formation) 2

Corral formation *

Corral Creek formation l

Cour d'Alene facies (of Belt 

series) 2

Glacier Park facies (of Belt 

series) 2

Goat River horizon of McBride 

group) 2

Hector formation *
580 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued 

Alberta Continued

Precambrian Continued

Hell Roaring member (of Altyn 

formation) 2

Jasper series l

McBride group 2

Meagher fades (of Belt series) 2

Miette formation l

Mount Rowe member (of Miller 

Peak formation) 2

Tete Jaune horizon (of McBride 

group) 2

Waterton dolomite l (see also

Watertown formation *) 

British Columbia 

Quaternary

Cordilleran formation l

Hoodoo lavas 2

Iskut River lava 2

Stikine lavas 2 

Recent

Alouette gravel s

Capilano group *

Salish group 2

Tseax River lava flow l 

Pleistocene to Recent

Bose gravel 2

Cloverdale sediments 2

Sunnyside sand 2 

Posi^Pleistocene (?)

Bellabella formation l 

Pleistocene

Abbotsford gravel J

Colebrook gravel 2

Colwood sands and gravels l

Cordova sands and gravels J

Garibaldi volcanic formation l

Lynn outwash 2

Marysville sands 1

Maywood clay 1

Newton stony clay s

Nicomekl silt (see also Nikomeki 

sand and silt 1 )

Point Grey formation 1

Quadra group 2

Saanich formation l

St. Eugene silts *

Sapperton sediments J

Semiamu group 2

Semiamu till 2

Seymour group 3

Seymour till 2

Sisters varved clay 2

Surrey till a

Thompson River silts 1

Wreck Bay formation '

Wycliffe glacial epoch and drift ! 

Tertiary (see also Mesozoic or 

Tertiary; and Cretaceous or 

Tertiary)

Boundary Bay formation l

Coquihalla series 1

Etheline volcanics !

Kitsilano formation l

Canada Continued

British Columbia Continued 

Tertiary Continued

Kruger alkaline body l

Mann Creek formation 1

Masset volcanics l

Park granite 1

Rapid formation *

Rexmont porphyry *

Rossland alkali granite l

Sheppard granite l

Similkameen beds l

Skonun formation l

Sophie Mountain conglomerate *

Spence Bridge series l

Sunloch metagabbro *

Tranquille beds l

Tuya lavas l

Valhalla granite l

White Lake formation * 

Tertiary (?)

Similkameen granite 1 

Miocene (see also Oligocene or 

Miocene)

Carmanah Point beds 1

Nipple Mountain series 8

Otter granite *

Skull Hill formation l 

Miocene(?)

Chilliwack granodiorite l

Lightning Creek diorite l

Salmon River monzonite l

Slesse diorite l 

Oligocene and (or) Miocene

Sooke formation * 

Oligocene or Miocene

Kamloops volcanic group l

Midway volcanic group * 

Oligocene

Allenby formation J

Cedar volcanic series l

Coldwater group 1

Curry Creek series l

Escalante formation s

Franklin monzonite l

Sooke gabbro group or intru- sives 1 

Oligocene(f)

Ashcroft rhyolite porphyry 1

French Bar formation 1

Kettle River formation l

Taseko formation l 

Oligocene or younger

Endako group J 

Eocene or Oligocene

Princeton group J 

Post-Eocene

Prospect Point eruptives l 

Eocene

Burrard formation l

Chu Chua formation l

Huntingdon formation '

Marron formation 2

Metchosin volcanics 1

Springbrook formation 3
INDEX TO THE GEOLOGIC NAMES OP NORTH AMERICA 581

Canada Continued

British Columbia Continued 

Eocene(f)

Beaverdell quartz monzonite *

Kishenehn formation x

Rexmount volcanics * 

Eocene or older

Australian members (of Fraser

River formation) * 

Mesozoic or Tertiary

Beaver Mountain group l 

Mesozoic

Rossland monzonite x Mesozoic(f) and older (?)

Phoenix volcanic group l 

Mesozoic and Carboniferous(f)

Wallace group 2 

Lower Mesozoic

Shonektaw formation * 

Cretaceous or Tertiary

Bulkley eruptives 1

Skagit volcanic formation l

Sloko group 2

Whitemans Creek granite 2 

Cretaceous (see also Jurassic or 

Cretaceous)

Cedar District formation *

Comox formation l

Eagle diorite *

Eldorado series l or granodiorite '

Fraser River formation *

Ganges formation *

Gates formation 1

Gething member l (of Bullhead 

Mountain formation)

Haida member (of Queen Charlotte series) l

Honna formation *

Komooks beds * Moosebar formation *

Quesnal River beds *

Skidegate formation 1 

Cretaceous(f)

Baker gabbro *

Beady formation *

Bitter Creek peridotite l

Duncan formation *

Fife gabbro 1

Quesnal River series *

Silver King porphyry 2

Tamihy series * 

Upper Cretaceous or Tertiary

Sheba group 2 

Upper Cretaceous

Benson formation »

Cowichan group x

Cranberry formation *

De Courcy formation l

Denman formation 2

Departure Bay calcarenites l

East Wellington formation x

Extension formation l

Fort Nelson formation 2

Gabriola formation l

Goeffrey formation 3

Haslam formation l

Canada Continued

British Columbia Continued 

Upper Cretaceous Continued

Helveker volcanics 2

Hornby formation *

Kotaneelee formation *

Lambert formation 2

Nanaimo group l

Newcastle formation l

Northumberland formation l

Protection formation 1

Quah'cum formation 2

Smoky group 2

Smoky River series 1

Spray formation 2

Sukunka member (of Dunvegan 

formation) l

Sustut group 2

Tribune formation 2

Vancouver group 1

Wapiti River sandstones l 

Upper Cretaceous(f)

Sifton formation 2 

Lower or Upper Cretaceous

Leckie group 2 

Post-Lower Cretaceous

Bridge River augite diorite ' 

Lower Cretaceous

Brew group 2

Brockenback Hill formation l

Buckinghorse formation 2

Bullhead group *

Canyon sandstone member (of 

Gething formation) 2

Commotion formation 2

Cruiser formation 2

Curved Tree Point sandstone 

member (of Gething formation) 2

Gust Island sandstone member 

(of Gething formation) 3

Dunlevy formation 2

Elk conglomerate 2

Galloway sandstone member (of 

Gething formation) 2

Garbutt formation 2

Goodrich formation 2

Hasler formation 2

Heron Creek sandstone member 

(of Gething formation) 2

Jackass Mountain conglomerate 

group 1

Jackass Mountain group * Kingsvale group 2

Larry sandstone member (of 

Gething formation) 2

Lepine formation 2

Lillooet group 2

Nechacco series l

One Tree formation 2

Peninsula formation l

Queen Charlotte Island formation x

Scatter formation 2

Shaftesbury formation 2

Sikanni formation 2
582 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued

British Columbia Continued 

Lower Cretaceous Continued

Skajit River beds l

Skeena sandstone, 1 series, 1 or 

formation l

Uslika formation * 

Lower Cretaceous(f)

Brian Boru formation 2

Inklin group 2 

Pre-upper Lower Cretaceous

Hedley diorite-gabbro 2 

Jurassic or Cretaceous

Open Bay group 1

Spearing group 2

Spence Bridge volcanic group 1 

Jurassic or Cretaceous (?}

Bonnington complex (R. Mulligan, 1952, Canada Geol. Survey Paper 52-13, p. 10-13).

Tachek group 2

Jurassic (see also Triassic or 

Jurassic; and Triassic and 

Jurassic)

Agassiz series 1

Ashcroft series *

Basque formation 1

Black Canyon formation 1

Boulder granite *

Colquitz gneiss l

Cornwall formation x

Coryell syenite 2

Dewdney Creek series * Dolly Varden formation l

Eagle granodiorite 1

Fernian series x

Fernie formation 1

Franklin granodiorite l

Harbledown formation l

Hurley formation 2

Image member (in Queen Charlotte group) * Kaslo schists l

Kitzault River formation *

Ladner series x

Langara quartz diorite 1

Maude argillites l

Minabariet formation * Mount Sicker formation x

Nelson granodiorite l

Ntlakapamux formation 1

Opuntia formation 2

Rock Creek granodiorite, 1 or 

gabbro and diorite *

Rock Creek member (of Fernie 

formation) 2

Saanich granodiorite 1

Salmon River conglomerate 1

Sicker series 1

Smelter granite *

Taylor group 2

Thompson series *

Trail granodiorite 2

Tyee porphyrite >

Wark gneiss l

Yakoun volcanics 1

Canada Continued 

British Columbia Continued 

Jurassic(f)

Baldie granite x

Beale diorite 1

Bralorne intrusives *

Camp Cove series »

Custer granite gneiss 1

Darlington granodiorite x

Denain formation *

Fairview granodiorite a

Gillies intrusives * Goose Bay formation l

Hazelton group 1

Kano quartz diorite '

Kootenay granite * Mount Murray diabase l

Olalla pyroxenite 2

Oliver granite * Osoyoos granodiorite x

Peterson Creek syenite *

Pine River formation *

Rykert granite *

Sinwa group *

Sumas diorite »

Sumner gabbro 3

Westkettle quartz diorite *

Yonakina group * 

Upper Jurassic and Lower Cretaceous

Armagosa member (of Red Rose 

formation) *

Blind Boy member (of Red Rose 

formation) 2

Dawn member (of Red Rose 

formation) *

Mill member (of Red Rose 

formation) *

Red Rose formation 3 

Upper Jurassic or Lower Cretaceous

Beattie Peak formation *

Chuchi Lake syenite 2

Duckling Creek syenite a Monach formation *

Monteith formation * 

Upper Jurassic

Agassiz Prairie formation *

Billhook formation *

Kent formation * Mysterious Creek formation * 

Middle or Upper Jurassic

John Brown formation 3 

Middle Jurassic

Echo Island formation *

Harrison Lake formation ' 

Lower to Middle Jurassic

Nazcha formation * 

Lower Jurassic

Takwahoni group * 

Jurassic and Triassic(f)

Nitinat formation 1

Sutton formation * 

Jurassic and (or) younger

Olalla syenite 2

Oliver syenite *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 583

Canada Continued

British Columbia Continued 

Triassic or Jurassic

Bear River formation 1

Bitter Creek formation 1

Goat Mountain formation * Marble Bay formation »

Nass formation x 

Triassic and Jurassic

Sansum formation a

Vancouver series * 

Triassic (see also Carboniferous or 

Triassic; and Carboniferous and 

Triassic)

Aberdeen formation *

Anderson Bay formation l

Baldonnel formation *

Cadwallader series »

Charlie Lake formation *

China Creek andesite 2

Cultus formation *

Franklin Creek basalt *

Hall series 1

Hedley formation 2

Henry formation a

Karmutsen volcanics *

Kaslo series l

Lucky Jim limestone (in Zincton 

member of Slocan series) 2

Nicola series l

Pardonet member (of Schooler 

Creek formation) a

Parson Bay group l

Quatsimo limestone *

Redtops formation *

Slollicum series *

Thibert series 1

Toad formation a

Valdes group l

Whitewater limestone a

Zincton member (of Slocan

series) a 

Triassic(?)

Elise formation a

Kitsalas formation 1

Shulaps volcanics *

Topley granite a

Tulameen group * Wolf Creek formation 3 

Triassic(f) and (or) older

Bowen Island group *

Gambier group a 

Upper Triassic to Upper Jurassic

Takla group a 

Upper Triassic or Jurassic

Pioneer formation a 

Upper Triassic and Lower Jurassic(f)

Bonanza group * 

Upper Triassic

Honakta formation a

King Salmon group a

Noel formation a

Schooner Creek formation l

Stuhini group 2

Tyaughton group a

Canada Continued

British Columbia Continued 

Middle Triassic

Liard formation 3

Whitehorse member (of Spray

River formation) a 

Lower Triassic

Grayling formation a 

Triassic and for) older

Barslow formation a

Bradshaw formation a

Independence formation 3 

Triassic or older

Old Tom formation a

Shoemaker formation a 

Triassic and older (f)

Ymir group a

Paleozoic (see also Precambrian or 

Paleozoic)

Ainsworth formation * or series 1

Josephine formation » 

Paleozoic(f)

Caulfield formation * 

Upper Paleozoic

Bear River beds *

Stoddard formation a (subsurface) 

Upper Paleozoic(t)

Highland formation l 

Permian

Blind Creek formation a

Buttle Lake group :

Kedahda formation a

Teslin formation a 

Permian (?)

Fergusson series a 

Permian and older (f)

Asitka group 2 

Permian to Ordovician(t)

Dease series 1 

Post- Carboniferous (f)

Lardeau diabase schists l 

Carboniferous or Triassic

Boston Bar group 1

Prince Rupert formation l

Red Mountain formation *

Slocan series *

Sunnyside limestone l 

Carboniferous and Triassic

Milford group l 

Carboniferous and (or) Permian

Jackpot limestone a 

Carboniferous and Permian

Mount Steyens greenstone and

amphibolite 2 

Carboniferous

Brooklyn formation l

Cache Creek group or series l

Campbell Creek beds »

Franklin group l

Kaslo volcanics l

Kingston limestone l

Marble Canon limestone x Mount Roberts formation l

Rawhide formation *
584 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued

British Columbia Continued 

Carboniferous Continued

Redtop formation l

Ruth argillite l

Silver Hoard formation l

Siwash series l

Skyline formation l

Star limestone 1

Stevenson limestone * 

Carboniferous and older (?)

Chilliwack series l 

Carboniferous(f), Triassic(f), Jurassic(?)

Rossland volcanic group * 

Carboniferous (?)

Anarchist series l

Ashnola gabbro 1

Attwood series 1

Brittania formation 1

Cascade series 1

Kobau group a

Kruger schist l

Lemieux Creek formation 1

Malahat volcanics l

Nickel Plate formation 1

Sutherland schistose complex » Vaseaux formation 2

Vedder greenstone l 

Carboniferous(?) and older(?)

Pend Oreille group 1 

Carboniferous and younger

Leach River (formation) *

Thompson group 2 

Carboniferous or pre-Carboniferous

Early Bird formation »

Point Woodbury formation *

Princess formation 1 

Pre-Carboniferous

Knob Hill group 1 

Pennsylvanian or Permian(f)

Bridge River series * 

Pennsylvanian

Rundle limestone 1

Rundlian series l 

Mississippian

Antler formation *

Dessa Dawn formation 2

Greenbury formation 1

Guyet formation 1

Kindle formation 2

Slide Mountain series l

Wardner limestone l

Wayerly formation x 

Devonian(f), Mississippian, and 

Pennsylvanian(?)

Wadin group 2

Upper Mississippian and Pennsylvania^?)

Nizi formation a

Proserpine intrusives * 

Devonian or Carboniferous

Victoria series l

Whitecap schist series 1

Canada Continued

British Columbia Continued 

Devonian

H arrogate limestone l

McConnell formation a

Messines formation x Muncho formation a

Pipestem formation l

Starbird formation l 

Devonian(f)

Mount Foster formation l

Perkins group x

Taku group 1

Post-Middle Devonian, pre-Upper 

Mississippian

Sylvester group a 

Middle Devonian

H arrogate formation *

Nahanni formation * 

Pre-Middle Devonian

Mountain Creek formation * 

Silurian and Devonian

Hidden Valley group a 

Silurian and (or) Middle Devonian

Burnais formation a 

Silurian

Briscp formation * 

Ordovidan (see also Cambrian or 

Ordovician; and Cambrian and 

Ordovidan)

Active formation a

Glenogle shale *

Gloucester formation *

Robson limestone 2

Sinclair formation * 

Wapta formation 1

Wonah quartzite x 

Ordovician(?) and younger

Seeman group 2

Upper Ordovician and Lower Silurian

Sandpile group a 

Upper Ordovician

Beaverfoot formation * 

Lower and Middle Ordovician

Walker group a 

Lower Ordovician

Chushina formation 1 

Cambrian or Ordovician

Bluebell limestone 2 

Cambrian and Ordovician

Goodsir formation 1 

Cambrian and Ordovician(f)

Fieldian series x

Cambrian (see also Precambrian or 

Cambrian; Precambrian and 

(or) Cambrian; Precambrian 

and Cambrian)

Adolphus formation 1

Chancellor formation x

Chancellorian series *

Cranbrook formation *

Eager formation 1

Elko formation 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 585

Canada Continued

British Columbia Continued 

Cambrian Continued

Hitka formation l

Hota formation l

Jubilee limestone * McNaughton sandstones 1

Mumm limestone l

Mural limestone x

Ottertail formation 1

Ottertail limestone *

Ottertailian series l

Redwall breccia *

Sir Donald formation 1

Tah formation * 

Cambrian(f)

Mount Selwyn formation l

Nisconlith series 1 

Upper Cambrian and Ordovician

McKay group * 

Upper Cambrian

Bosworth formation l

Lynx formation l

Paget limestone 1

Sabine formation *

Sherbrooke limestone *

Sherbrookian series 1 

Middle Cambrian

Burgess shale *

Burton formation *

Cathedral limestone l

Cathedralian series x

Lake Agnes shale lentil (of Mount 

Whyte formation) *

Nelway formation 2

Ross Lake shale member (of 

Ptarmigan formation) *

Stephen formation *

Stephensian series 1

Yoho shale lentil (of Mount

Whyte formation) 2 

Middle Cambrian(?)

Canyon Creek slate 1 

Lower, Middle and Upper Cambrian

Castle Mountain group l

Galton series 1 

Lower and Middle Cambrian

Atan group 2

Horseranch group 3 

Lower Cambrian

Donald strata *

Fort Mountain sandstone 1

Ingenika group 2

Laib group 2

Peyto limestone member (of St.

Piran sandstone) 2 

Precambrian or Paleozoic

Eagle Bay formation 2

King Edward formation 2

Larkin formation 2

Mara formation 3

Mount Ida group 2 

Precambrian or Cambrian

Badger Creek formation *

Barriere formation *

Canada Continued

British Columbia Continued 

Precambrian or Cambrian Con.

Fennell formation *

Ishpa formation 2

Kimball formation J

Lostway member (of Richfield 

formation) 2

Matthew formation *

Roundtop member (of Richfield

formation) 2 

Precambrian and (or) Cambrian

Cunningham limestone 2

Midas formation 2

Midas limestone member (of 

Midas formation) 2

Snowshoe formation 2

Yankee Belle formation 2

Yanks Peak quartzite 2 

Precambrian and Cambrian

Bow River group 1

Creggan Creek formation *

Reeves limestone member (of 

Reeves McDonald formation) a

Reeves McDonald formation 2 

Precambrian to Lower Cambrian(f)

Bee member (of Richfield formation) 2 

Precambrian

Adamsian l (series)

Adams Lake series * or group l

Albert Canyon division *

Aldridge conglomerate *

Aldridge formation l

Badshot formation *

Baker member (of Richfield formation) 1

Bakerville formation *

Bastion schist l

B. C. member » (of Richfield formation)

Beehive formation l

Cariboo schists * 

Chase quartzite member (in Shuswap series) x

Cinnemousum limestone * 

Cougar formation x

Cougarian series l

Creston quartzite l

Dewdney formation l

Dutch Creek formation l

Elkoan series l

Fort Steele formation 2

Glacier division x

Hamill series 1

Horsethief formation *

Horsethief Creek formation l

Hudson member (of Richfield 

formation) *

Illecillewaet quartzite l

Kitchener quartzite l

Lardeau series x

Laurie formation l

Lewis series l

Lone Star formation 1
586 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued

British Columbia Continued 

Precambrian Continued 

Lourian series l 

Lowhee member (of Richfield

formation) l 

McDonald formation l 

Misinchinka schists * 

Monk formation * 

Moose meta-argillite > 

Motherlode series 2 

Mount Nelson formation 1 

Moyie argillite 1 (see also Mooyie

argillite or formation *) 

Moyie sill (gabbro) * 

Nakimu limestone x 

Nakimuan series 1 

Nisconlithian series * 

Nugget series 2 

Phillips formation * 

Pleasant Valley formation 1 

Priest River group (as terrane) : 

Purcell basalt 1 

Purcell series 1 

Quartzite Range formation * 

Quesnal Lake crystalline series l 

Rainbow member (of Richfield

formation) * 

Reno formation l 

Richfield formation l 

Ripple quartzite l 

Roosville formation 1 

Ross quartzite 1 

Rossian series * 

Ruby group 2 

Saddleback series l 

Salmon series * 

Salmon Arm schist l 

Selkirk series * 

Shuswap granite 1 

Sicamous limestone l 

Sicamous series l 

Sujeh formation 1 

Tenakihi group * 

Three Sisters formation l 

Toby conglomerate l 

Tonkawatla formation 1 

Tshinakin formation x Wigwam formation * 

Windermere series 2 

Wolf formation l 

Yahk quartzite l (see also Yaak

quartzite l) 

Precambrian(f) and younger

Wolverine complex 2 

Precambrian (?)

Azure River series l 

Hobson Lake series * 

Irene conglomerate l 

Irene volcanic formation l 

Navada member (or Quartzite

Range formation) 2

Anderson River group l 

Bear River greenstones l 

Big Sheep volcanics *

Canada Continued

British Columbia Continued 

A ge(t) Continued

Goose Bay argillite »

Grand Forks schist *

Ice River formation *

Krao limestone l

Lost Creek granite body *

Lost Horse intrusives *

Oblique Creek formation 2

Port Renfrew series l

Proserpine quartz porphyry l

Providence Cove beds l

Richter Mountain hornblendite *

Tagish series *

Texado group l

Trent River shales *

Tutshi series »

Verde Creek granite l

Wark diorite l 

Manitoba 

Pleistocene

Keewatin till J or drift * 

Tertiary

Boissevain sandstone l 

Paleocene

Turtle Mountain formation a 

Cretaceous

Ashville beds l

Assiniboine series *

Boyne beds x

Keld beds l

Morden beds l

Pembina beds l

Pembina Mountain 1 (group)

Riding Mountain beds l

Vermilion River beds l 

Upper Cretaceous

Cheval beds *

Favel formation a

Millwood formation * Odanah series l

Souris lignitic *

Swan River beds 1 

Jurassic or older

Amaranth formation 2 

Upper Jurassic

Melita formation 8

Waskada formation 3 

Middle Jurassic

Reston formation 2 

Devonian

Elm Point limestone *

Hudson Bay formation * (subsurface)

Lyleton shale 2 (subsurface)

Manitoba formation l

Moose Jaw Group ' (subsurface)

Qu'Appelle group ' (subsurface)

Stony Mountain shales l 

Upper Devonian(?)

Manitoban 1 (series) 

Middle or Upper Devonian

Point Wilkins member (of Manitoban formation) 8
INDEX TO THE GEOLOGIC NAMES OP NORTH AMERICA 587

Canada -Contimi ed 

Manitoba Continued 

Middle Devonian

Dawson Bay formation * (subsurface)

Mafeking formation a Winnipegosis formation > 

Silurian or Lower Devonian

Ashern formation 2 

Silurian

Interlake group a

Port Nelson limestone l

Stonewall limestone l 

Ordovician

Nelson limestone 1

Nelson River limestone l

Selkirk limestone 1

Shammattawa limestone 1

Stony Mountain limestone l 

Upper Ordovician

Birse member (of Stony Mountain formation) 2

Cat Head limestone l

Dog Head limestone *

Gunton member (of Stony Mountain formation)*

Penitentiary member (of Stony 

Mountain formation) 2

Red River formation J (subsurface in Williston basin, U.S.)

Stony Mountain formation l (subsurface in Williston basin, U.S.)

Stony Mountain shale member 

(of Stony Mountain formation)' 

Middle Ordovician

Winnipeg sandstone 1 (subsurface in Williston basin, U.S.) 

Cambrian

Churchill arkose sandstone l 

Precambrian

Aikens Lake granite a

Alberts Lake granodiorite 3

Amisk group or series *

Assean Lake series 2

Beresford phase x

Bird River intrusive complex a

Black Trout diorite 2

Bulger Lake granite 2

Churchillian group *

Cliff Lake granite porphyry »

Cross Lake group *

Dismal Lake granodiorite-gneiss *

File granite 2

Ham granite 8

Hayes River group l

Hughes Lake conglomerate a

Island Lake series l

Kaminis granite '

Kiski volcanics l

Laguna series a

Manigotagan granite *

Naosap granodiorite a

Nekik granodiorite a

Nokomis group 8

Canada Continued 

Manitoba Continued 

Precambrian Continued

Noriss granite 2

Oxford group 2

Ralph Lake conglomerate a

Reed granite a

Rice Lake series *

San Antonio formation a

Sherridon group a

Sickle series 1

Snow group a

Squall Lake granite a

Tapukok granodiorite a

Vamp Creek granodiorite a

Wallace Lake granite a

Wanipigow diorite 2

Wasekwan series a

Wekusko group l

Wekuskoan group 2 

New Brunswick 

Quaternary

Grand Falls drift a

St. Jacques drift 2 

Triassic

Lepreau formation a

Quaco conglomerate * 

Carboniferous

Bathurst formation l

Boyd series l

Hillsborough series 1

Red Head formation l

Weldon series * 

Woodstock conglomerate * 

Upper Carboniferous

Courtenay Bay formation a

Cranberry Point formation a

McCoy Head formation a

Partridge Island formation a

Tynemouth Creek formation a 

Post-middle Carboniferous

Chance Harbour granite a 

Lower or Upper Carboniferous

Hammond River formation 2 

Lower Carboniferous

Boar Head formation a

Kennebecasis formation or series2 

Pr e- Carboniferous

Caledonia group l

Duck Lake gabbro a

Fairville granite 2

Germaine Brook granite 2

Golden Grove intrusives a

Grand Lake formation l

Indiantown gabbro 2

Kennebacasis granite 2

Mayflower Lake quartz diorite a

Milkish Head granite and granodiorite 2

Portland series *

Rockwood Park granodiorite a 

Pennsylvanian

Clifton formation *

Coal Creek formation *

Enragg formation 2

Grande Anse formation 2
588 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued

New Brunswick Continued 

Pennsylvanian Continued

Hurley Creek formation * Macdonald Glen formation * Minto formation *

Newcastle Creek formation *

Petitocodiac series x

Richibucto formation *

Salisbury formation *

Scoudouc formation *

Shepody formation 2

Sunbury Creek formation *

Tormentine formation a 

Pennsylvanian or older

Hardwood Ridge flow a 

Mississippian and (or) Pennsylvanian

Balls Lake formation a

Maringouin formation * West Beach formation * 

Mississippian

Albert formation *

Demoiselle formation » Gautreau formation >

Memramcook formation * Moncton group 2

Upham formation 2

Weldon formation l 

Devonian or Carboniferous

Bloomsbury formation 1

Lancaster formation x 

Devonian (see also Silurian or 

Devonian; and Ordovician to 

Devonian)

Barberie andesite l

Bon Ami andesite 1

Campbellton formation »

Inch Arran latites * Maple Green andesite l

Mispec group >

Restigouche volcanic series *

Saint George granite or plutonics a

Scauminac formation a

Stewart andesites 1

Sugar Loaf dacites * 

Devonian(t)

Nipisiguit granite x Middle Devonian(f)

Lepreau diorite 3

Musquash granite * 

Lower Devonian

Dalhousie shales » 

Silurian to Mississippian

Coal Creek formation > 

Silurian or Devonian

Little River group 1 

Silurian and Devonian (?)

Mascarene series * 

Silurian

Belledune group 1

Dalhousie limestones l

Elmtree slates :

Oak Bay formation 2

Turgeon formation 1

Canada Continued

New Brunswick Continued 

Upper Silurian

Jones Creek formation *

Long Reach formation * 

Post-Ordovician

Austin Brook quartz porphyry x 

Ordovician to Devonian

Fournier group l 

Ordovician

Beccaguimic formation * Millstream series *

Tetagouche series l 

Ordovician(f)

Charlotte group a 

Lower Ordovician

Navy Island formation 3

Suspension Bridge formation a 

Cambrian (see also Precambrian or 

Cambrian)

Narrows formation a 

Upper Cambrian

Agnostus Cove formation 2

Black Shale Brook formation2 

Middle Cambrian

Fossil Brook formation *

Hastings Cove formation a

Loch Lomond series a

Porter Road formation a

St. Jean group * 

St. John group *

St. Johns shales * 

Lower Cambrian

Etcheminian series 1 or group *

Glenn Falls formation a

Hanford formation *

Hanford Brook formation *

Hanfordian series *

Ratcliffe Brook formation a 

Precambrian or Cambrian

Coldbrook group 1 

Precambrian

Coastal group *

Green Head formation a

Kingston group *

Portland group *

Robin Hood formation a

Saint John volcanics a

St. Martins intrusives and extrusives 2 

Age(f)

Gauvin andesite l 

Newfoundland (proper) 

Carboniferous

Humber grit series * 

Upper Carboniferous

Barachois series 2 

Mississippian

Anguille series a

Aquathuna limestone a

Black Point formation or limestone a

Boswarlis beds 3

Cape Anguille sandstone 2

Cape Rouge series a
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 589

Cana da Continued 

Newfoundland (proper) Continued 

Mississippian Continued

Codroy breccia 2

Codroy series 2

Codroy shale *

Cormorant limestone 2

Crabbs limestone a

Deer Lake (group) 2

Fishells conglomerate 2

Fishels limestone 8

Heatherton limestone 2

Highlands sandstone 2

Humber Falls formation 2

Jeffreys limestone 2

Rocky Brook formation a

Seacliffs sandstone 2

Searston beds 2

Ships Cove limestone 2

Snakes Bight shale 2

Spear Point formation 2

Woody Cove shale 2

Woody Head beds 2

Woody Point sandstone 2 

Devonian or Mississippian

Rencontre formation 2 

Devonian(?) or Carboniferous(f)

Smiths Hole conglomerate 2 

Devonian

Baggs Hill granite 2

Burlington granite 2

Cape Brule granite 2

Chetwynd granite a

Dolman gneiss 2

Dunamagon granite 2

La Poile group 2

Roti granite 2 

Devonian (?)

Colchester granodiorite-quartz diorite 2

Dollond Arm Head quartz diorite 2

Grand Beach rhyolite-pprphyry 2

Mansfield Head granodiorite 2

North Bay granite 2

Northern Bight granite 2

Powder Horn diorite 2

South Brook biotite-quartz-monzonite 2 

Lower or Middle Devonian

Bay du Nord group 2 

Lower Devonian

Clam Bank series 2 

Pre- Devonian

Keepings gneiss a

Victoria River series a 

Post-Silurian

Ackley granite 2 

Silurian

Botwood formation 2

Gander Lake series 2

Goldson formation 2

Herring Head conglomerate 2

Indian Island group 2

Natlins Cove formation 2

Notre Dame series 2

Canada Continued

Newfoundland (proper) Continued 

Silurian Continued

Pike Arm formation 2

Pikes Island conglomerate a

Sops Island member (of Natlins

Cove formation) 2 

Silurian(?)

Baie d'Espoir series a

Springdale formation a 

Upper Silurian or younger

Garrison Hills granite 2 

Post-Ordovician

North Brook granite 2

Twillingate granite 2 

Ordovidan (see also Cambrian and 

Ordoviciari)

Andersons Cove slates 2

Baie Verte formation a

Bide Arm formation 2

Breakheart basalt 2

Cape St. John group a

Cutwell group 2

Deadmans Cove member (of 

Giles Cove formation) 2

Englee formation 2

Exploits series 2

Fortune tuffs and cherts a

Foulke Cove slate and shale 2

Giles Cove formation a

Goose Tickle slate 2

Gravel Head formation 1

Hornet conglomerate 2

Ireland Point volcanics (in Maiden Point sandstone) 2

Jacksons Arm conglomerate 

member (of Giles Cove formation) 2

Lawrence Harbour shale 2

Luke Arm formation 2

Maiden Point sandstone 2

Mortons volcanics 2

Nippers Harbour group 2

Northwest Arm formation 2

Parsons Pond beds 2

Round Head breccia 2

St. Pauls group 2

Sansom graywacke and quartz 2

Simms Ridge shale 2

Sivier formation 2

Snooks Arm series 2

Taylors Pond shale member (of

Giles Cove formation) 2 

Ordovician(f)

Belle Bay volcanics 2

Brent Island limestone 2

Burin series 2

Farewell group 2

Fogo group 2

Goose Cove schist 2

Goss Pond volcanics 2

Little Lawn formation 2

Long Harbor series 2

Lushs Bight group 2

Mings Bight formation 2
590 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued

Newfoundland (proper) Continued 

Ordovician (?) Continued

Mooring Cove volcanics 2

Mount Margaret volcanics 2

Pilleys series 2

Red Cliff volcanics 2

Wellmans Cove diorite 2 

Upper Ordovician or Devonian

Blow-me-down complex 2 

Middle and Upper Ordovician

Canada Head formation 2

Humber Arm series x 

Post-Middle Ordovician

Bay of Islands complex 3

Bluff Head volcanics 2

Mount Barren metamorphic com- plex 2 

Middle Ordovician

Cooks limestone tongue (of 

Humber Arm series) 2

Cow Head limestone breccia l

Hare Island limestone 2

Long Point series l

Portland Head group 2

Table Head series * 

Middle Ordovician(f)

Badger Bay series 2

Beaver Bight formation 2

Burtons Head group 2

Crescent Lake formation 2

Gull Island formation 2

Julies Harbour group 2

Roberts Arm volcanics 2

Shoal Arm formation 2

Wild Bight volcanics 2 

Lower Ordovician

Apsey formation *

Beach formation '

Bell Island series 1

Brown Mead formation >

Chimney Arm formation 2

Clarenville series *

Dominion ore bed *

Eastern Head formation 1

Green Point series *

Kelly Island formation 1

Lance Cove formation x

Little Bay Head lavas 2

Little Bell Island formation x McGraw bed 1

Maidment formation *

Redmond formation l

Riders Brook formation l

St. George series l

Scotia ore bed x

Southern Arm limestone 2

Wabana series l

Western Arm basalts or group 2

Western Brook Pond group 2 

Cambrian or Ordovician

Buchans series * Waban formation l

Canada Continued

Newfoundland (proper) Continued

Cambrian (see also Precambrian and

Cambrian)

Beaver Brook shale 2 

Belle Isle shale ' 

Chamberlins Brook formation l 

Doucers marble and limestone 2 

Grand Lake Brook series 2 

Kippens formation 2 

Long Pond formation » 

Newfoundland series l 

Random Sound series * 

St. Johns slate l 

Youngs Cove group 2

Upper Cambrian 

East Arm formation 2 

Elliot Cove formation * 

March Point formation * 

Middle Cambrian

Cloud Rapids formation 2 

Killigrews Brook formation 1 (see 

also Kelligrews Brook formation i)

Manuels formation * 

Petit Jardin formation 3 

Treytown Pond formation 2

Middle(f) Cambrian

Sound Island formation *

Lower and Middle Cambrian 

Fortune Brook formation *

Lower Cambrian

Bonavista formation l

Brigus formation l

Devils Cove formation 2

Doten Cove formation 2

Goose Cove formation 2

Hawke Bay formation * or

quartzite 1 

Placentia * (terrane) 

Pools Cove formation 2 

Smith Point formation * 

Terra Nova l (series)

Lower Cambrian and Precambrian(f) 

Dantzic group 2

Precambrian and later 

Terranovan l (series)

Precambrian and Cambrian 

Bay d'Est formation 2 

Bull Arm felsite member (of

Musgravetown group) 2 

Cloud Mountain series 1 

Salt Water Fund series l 

Spoon Cove formation 2 

Spyglass Cove formation * 

Tilt Point formation 2

Precambrian 

Avalon group l 

Avalonian formation l 

Avondale volcanics l 

Barrys zone (in Headland gneiss) 2 

Birchy schist 2 

Blackhead formation 2 

Cabot group *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 591

Canada Continued

Newfoundland (proper) Continued 

Precambrian Continued

Caplin Cove member (of Logy 

formation) 2

Capta zone (in Headland gneiss) a

Carbonear formation 2

Cloud River granite 2

Conception slate *

Connecting Point group 2

Fleur de Lys group 2

Fresh Pond granodiorite 2

Grand Bank series l

Great Harbour Deep granite 2

Halls Town formation 2

Harbour Main volcanics 2

Headland gneiss 2

Hibbs Hole formation 2

Highlands formation 2

Hodgewater group 2

Lanse a Loup series *

Lince-a-Jardin member (of Logy 

formation) 2

Logy formation 2

Lue Point member (of Logy 

formation) 2

Momable slates l

Pardee gneiss 2

Partridge granite 2

Pigeon gneiss 2

Random formation *

St. Lawrence granite 3

Signal Hill formation *

Shoalrocks gneiss 2

Snows Pond formation 2

Starboard gneiss 2

Torbay slate l

Whiteway formation a Woody Cove member (of Logy 

formation) 2

Ygol member (of Logy forma- tion) * 

Precambrian(f)

Musgravetown group 2

Rattling Brook group 2 

Age(f)

Humber limestone 1

Newfoundland coal formation 1

North Arm complex 2

Port au Port shale and gritstone *

Trinity Bay sandstone '

White Bay group 2 

Newfoundland (Labrador) 

Quaternary

Labrador formation * 

Paleozoic

Double Mer sandstone * 

Cambrian

L'Anse au Loup limestones * 

Lower Cambrian

Bradore formation l

Forteau formation l

Labrador series 2 

Precambrian

Aillik formation *

Domino gneiss *

Canada Continued

Newfoundland (Labrador) Con. 

Precambrian Continued

Duley Lake group *

Ferriman series 2

Hamilton series 2

Harp Lake anorthosite 2

Holyrood granite 2

Hopedale gneiss 2

Kaipokok gneiss 2

Kaniapiskau series 2

Kaumajet volcanic series 2

Makkovik granite 2

Mealy Mountains anorthosite 2

Mountignais formation 2

Mugford series 1

Nain anorthosite 2

Point series 2

Ramah series 1

Red Wine anorthosite *

Sandgirt Lake formation *

Sims group 2

Strawberry granite 2

Wapussakatoo group l

Zebra slate 2

Northwest Territories (Franklin) 

Cretaceous or Cenozoic

Eureka Sound group 2 

Cretaceous or Tertiary (f)

Intrepid Bay formation 2 

Lower Cretaceous or younger

Christopher formation 2

Hassel formation 2

Isachsen formation 2 

Lower Cretaceous

Deer Bay formation 2 

Lower Jurassic(f)

Cape With formation 2 

Middle to Upper Triassic

Blaa Mountain formation 8 

Paleozoic (see Precambrian or Paleozoic) 

Upper Paleozoic or Mesozoic

Disappointment Bay formation 2 

Permian

Greely Fjord group 2 

Permian or older

Sail Harbor group 2

View Creek group * 

Carboniferous or Permian

Feilden group 2

Guide Hill group 2 

Middle Pennsylvanian

Canyon Fjord formation 8 

Devonian

Dana Bay beds 8

Snowblind1 Bay formation 2 

Silurian and Ordovician(f)

Alien Bay formation 2 

Ordovician and Silurian

Read Bay formation 8 

Ordovician

Cape Baird limestone 8

Putnam Highland formation 8

Thorup Fjord limestone 8
592 GEOLOGIC NAMES OF NORTH AMEEICA

Canada Continued

Northwest Territories (Franklin) 

Continued 

Upper Ordovician

Cornwallis formation 2

Silliman Mount formation * 

Middle or Upper Ordovician

Croker Bay limestone 2 

Lower Ordovician

Mingo River formation *

Nadlo Point limestone * 

Middle Cambrian

Bear Point limestone *

Ooyahgah formation 2 

Lower Cambrian

Police Post limestone *

Rabbit Point sandstone 8 

Precambrian or Paleozoic

Cape Columbia group 2

Mount Disraeli group 2 

Northwest Territories (Keewatin) 

Precambrian

Belcher series l

Belcher Island series 2

Dubawnt group 2

Hurwitz group 2

Keepalloo iron formation 1

Marble Island quartzite 8

Tookcarak diabase * 

Northwest Territories (Mackenzie) 

Cretaceous

Meander shales * Mountain shales 1

Rabbitskin sandstone * 

Upper Cretaceous

East Fork formation or series 2

Little Bear formation 2

Slater River formation 2 

Lower Cretaceous

San Sault group 2 

Devonian

Beavertail limestone 1

Bosworth sandstone and shale *

Camp Creek series 1

Carcajou Mountain beds *

Fort Creek shale 1

Hare Indian River shale *

Hare River shales 1

Horn River shales * Mount Charles formation 1

Pine Point limestone *

Presqu'ile dolomite *

Rampart limestone *

Simpson shale l

Slave Point limestone 1 

Upper Devonian

Alexandra formation 2

Canyon sandstone (in Fort Creek 

formation) 2

Carcajou series 2

Grumbler formation 2

Hay River series 2

Imperial formation *

Jungle Ridge limestone member 

(of Fort Creek formation) 2

Canada Continued 

Northwest Territories (Mackenzie) 

Continued 

Upper Devonian Continued

Kee Scarp limestone member (of 

Fort Creek formation) 2

Trout River formation 2 

Middle Devonian

Amco horizon (of Slave Point

formation) 2 

Silurian or Devonian

Bear Rock formation 2 

Silurian

Bear Mountain formation !

Franklin Mountain formation l

Fitzgerald limestones l

Lone Mountain dolomite l

Mount Kindle formation l

North Nahanna River dolomite *

Ronning group 2 

Ordovician

Sunblood formation 8 

Cambrian

Macdougal group 2

Saline River formation 1 

Middle Cambriqn

Mount Cap formation 1 

Cambrian and (or) older

Katherine group 2 

Precambrian

Akaitcho flow (in Yellowknife 

group) 2

Baker Creek member (in Yellowknife group) 2

Bode conglomerate 2

Bow Lake flow (in Yellowknife 

group) 2

Brock group 2

Cameron Bay series >

Charlton group 1

Coppermine River series * Drill Camp flow (in Yellowknife 

group) 2

Echo Bay series 1

Epworth dolomite 1 _ Et-Then series *

Fox flows 2

Goulburn quartzite 1

Great Slave group *

Hornby Bay series 2

Kahochella formation 8

Kanuyak formation *

Lindsley Bay granite porphyry 1

Lone Land formation 1

Marian group 2

Millsite flow (in Yellowknife 

group) 2

Murky conglomerate * Negus flow 2

Nob Hill flow (in Yellowknife 

group) 2

Nonacho series 2

Pearson formation 2

Pekanatui series 1

Pethei formation 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 593

Canad a Continued 

Northwest Territories (Mackenzie) 

Continued 

Precambrian Continued

Point Lake phase (of Point LakeWilson Island group) 2

Point Lake-Wilson Island group 2

Powder House flow (in Yellowknife group) 2

Preble formation 2

Prosperous Lake granite 2

River Lake granite 2

Runa Lake granodiorite 2

Snare group 2

Snowdrift series *

Sosan formation 8

Staff House flow (in Yellowknife 

group) 2

Stalk group l

Stark formation *

Stock flow a

Tazin series l

Teshierpi granite a

Tochatwi group l

Townsite flows 2

Union Island group 2

Wilson Island phase (of Point 

Lake-Wilson Island group)*

Yellorex flow a

Yellowknife group 2 

Age(f)

Coppermine series * 

Nova Scotia 

Pleistocene

Bridgewater conglomerate 2 

Triassic

Annapolis formation 1

Blomidon shale *

Cape Spencer flow 2

Five Islands volcanics *

Grande Pre formation l

North Mountain basalt l

Scots Bay formation l

Wolfyille sandstone * 

Carboniferous (see also Devonian or 

Carboniferous)

Canary lime '

Cape John formation 1

Gaspereau formation *

Hopewell sandstone *

Horton Bluff formation l

Joggins formation * Mabou formation 1

Merigomish formation l

Middleborough member 1 (of 

River John series)

Middle River formation 1

Millsville member l (of Lismore 

formation)

New Glasgow conglomerate *

Pictou formation *

Pictou freestones *

Plymouth member 1

Ribbon limestone *

Canada Continued

Nova Scotia Continued

Carboniferous (see also Devonian or 

Carboniferous)

Riversdale formation 1

Shulie formation 1

Smalls Brook limestone *

Smelt Brook formation 1

Stellarton formation * Westville formation l 

Pennsylvanian (see also Mississippian or Pennsylvanian)

Albion member (of Stellarton 

series) 2

Boss Point formation l

Broad Cove formation *

Canso series 2

Cape Dauphin formation *

Coal Brook member (of Stellarton series) 2

Cumberland series l

Harrington River formation 1

Hawkesbury series 2

Inverness formation a

Lismore formation 1 (also as 

Listmore formation J)

Mabou Mines formation 8

McLellan Brook sub-member (of 

Thorburn member of Stellarton series) 2

Marsh Brook submember (of 

Thorburn member of Stellarton series) 2

Morien series 1

Parrsboro formation 1

Point Edward formation 1

Port Hood coal measures l

Riverside series 2 

. St. Ann formation a

Shale Brook submember (of 

Thorburn member of Stellarton series) 2

Skinner Brook member (of Stellarton series) 2

Thorburn member (of Stellarton 

series) 2

West Bay formation 2 

Lower Pennsylvanian

Millsville conglomerates * 

Pennsylv anian (?)

Claremont formation 2

MacFarlane redbeds 1

Middle Bridge formation l 

Mississippian or Pennsylvanian

Scotch Village formation 2

Ainslie sandstone l 

Ardness formation * 

Avon River limestone * 

Cheverie formation l 

Grantmire member (of Windsor

series) 2

Horton series 1 

Judique series * 

Kennetcook limestone *
594 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued

Nova Scotia Continued 

Mississipian Continue d 

McAras Brook formation l 

Macumber formation 2 

Maxner limestone 1 

Miller limestone ! 

Pembroke formation 2 

River John series 1 

Tennycape formation 2 

Windsor group l

Dunbar series *

Kewstqke conglomerate l 

Lower Mississippian

Pilier conglomerate and sandstone 2 

Devonian or Carboniferous

Union formation l 

Devonian

Bear River formation 2

Knoydart formation * 

Lower or Middle Devonian

McAdam Lake formation 2 

Silurian or Lower Devonian

Middle River group 2 

Silurian

Arisaig series 1

Beechhill formation l

Beechhill Cove formation l

Cobequid series l

Kentville formation l

McAdam formation l

Moydart formation 1

Nictaux beds 2

Ross Brook formation *

Stonehouse formation *

Torbrook sandstone 1 

Silurian(f)

New Canaan formation * 

Ordovician

Baxters Brook formation J

Browns Mountain group l

James River formation * Malignant Cove formation 1

Stewart Brook formation 2 

Lower Ordovician(f)

James River granite 2 

Lower Ordovician and Upper Cambrian^)

McLeod Brook formation 2 

Cambrian (see also Precambrian or 

Cambrian)

Atlantic Coast series J

Barachois slate 1

Bears Brook formation 1

Guysborpugh formation l

Mira series or formation l 

Cambrian and older(?)

Morrison formation 2 

Upper Cambrian

Bretonian l (series)

MacNeil formation 2 

Middle Cambrian

Bourinot group 2

Coldbrookian series 2

Canada Continued

Nova Scotia Continued

Middle Cambrian Continued

Dugald formation 2

Dugald Brook series 2

Dugaldian series 2

Eskasoni formation 2

Gregwa formation 2

Kelvin Glen group 2

MacLean Brook formation 2

MacMullin formation 2

Trout Brook formation 2 

Middle Cambrian(f)

Myrabayan series 2 

Lower Cambrian

Canoe Brook formation 2

MacCodrum formation 2

Morrison River formation 2 

Precambrian or Cambrian

Goldenville formation *

Halifax formation * Whiterock quartzite * 

Precambrian

Fourchu group 2

George River series * Meguma series 1 

Precambrian(f)

Clyburn formation 1

Ingonish gneiss * 

Age(?)

Chegoggin Point formation l

Franey granite 1

George River limestone 1

South Mountain granite 2 

Ontario 

Pleistocene

Algoma sand J

Artemisia gravel l

Clarke interglacial * (sands and 

clays)

Don beds (in Toronto formation) 1

Erie clay l

Irpquois clay l

Nipissing clay l

Patrician drift l

Saugeen clay J

Scarboro beds l

Toronto formation 1

Warren gravel l 

Upper Jurassic or Lower Cretaceous

Mattagami series l 

Devonian

Abitibi River formation 1

Arkona beds l

Ipperwash limestone 1

Ipperwash limestone member l 

(of Hamilton formation)

Long Rapids shale 1

Norfolk formation 2

Petrolia shale l

Petrolia shale member (of Hamilton formation) 1

Port Lambton beds l

Sextant formation 1
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 595

Canada Continued 

Ontario Continued 

Devonian Continued 

Thunder Bay shales * 

Widder beds 1 

Williams Island limestone l 

Upper Devonian 

Kettle Point black shale 8 

William Island formation 8 

Middle Devonian

Anderdon limestone member (of

Lucas formation); (as member

of Detroit River dolomite l) 

Decewsville formation J 

Hungry Hollow formation * 

Springvale sandstone 1 

Lower and Middle Devonian 

Moose River formation * 

Silurian

Attawapiskat coral reef * 

Attawapiskat limestone 1 

Barton beds 1 

DeCew limestone l 

Ekwan limestone l 

Ekwan River limestone l 

Eramosa member l (of Lockport

formation) 

Gait limestone * 

Kenogami River formation l 

Pagwa River formation 1 

Severn limestone * 

Severn River limestone * 

Wabin formation 1 

Wingfield formation a 

Middle Silurian 

Albemarle group 2 

Amabel formation 8 

Ancaster member (of Eramosa

formation) 2 

Assignack member (of Burnt

Bluff formation) 2 

Billings member (of Burnt Bluff

formation) 2 

Colpoy Bay member (of Amabel

formation) 2

Fossil Hill formation 2 

Guelph dolomite 1 

Lion Head member (of Manistique formation) 2 

Speedwell member (of Eramosa

formation) 2 

Suspension Bridge member (of

Lockport dolomite) 2 

Wiarton member (of Gasport

formation) 2 

Lower Silurian

Bidwell member (of Cataract

formation) 2 

Cabot Head shale member (of

Cataract formation) 1 

Cataract formation 1 

Dyer Bay dolomite lentil (of

Cabot Head shale member) 1 

Grimsby sandstone J 

Kagawong member (of Cataract

formation) 1

504835 59 13

Canada Continued 

Ontario Continued

Lower Silurian Continued 

Keppel dolomite l 

Manitoulin dolomite member (of

Cataract formation) 1 

Power Glen formation 8 

St. Edmund dolomite lentil (of

Cabot Head shale member) 1 

Thoroid sandstone member (of

Albion sandstone) 1 

Ordovician (see also Cambrian and

Ordovician) 

Billings formation 2 

Blue Mountain formation * 

Christie member (of Dundas

formation) 1 

Coboconk limestone * 

Cobourg limestone 1 

Cragleith formation 8 

Danforth member (of Dundas

formation) 1 

Eastview formation 8 

Haileybury formation l 

Kirkfield limestone group * 

Liskeard formation 1 

Nottawasaga group 2 (subsurface) 

Ottawa beds l 

Picton formation l 

Rideau sandstone l 

Rouge River formation 8 

St. Marys sands 1 

Simcoe group 2 (subsurface) 

Verulam formation 2 

Vincent member (of Meaford

formation) '

Whitby group 2 (subsurface) 

Winnipeg limestone 1 

Upper Ordovician 

Carlsbad formation 2 

Collingwood formation * 

Credit member 1 (of Dundas

formation) 

Davenport member * (of Dundas

formation) 

Don River member 1 

Dundas formation 1 

Erindale member * 

Humber member J (of Dundas

formation)

Humber River 1 (member) 

Kagawong beds l 

Meadowvale member l 

Meaford member l 

Queenston shale 1 

Rosedale member * (of Dundas

formation) 

Russell formation 2 

Sheguindah beds l 

Streetsville member * 

Wekwemikongsing beds l 

Middle Ordovician 

Cloche Island beds * 

Glenburnie member (of Chaumont formation) * 

Gull River formation *
596 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued 

Ontario Continued

Middle Ordovician Continued 

Hallo well member (of Cobourg

formation) 2 

Hillier member (of Cobourg

formation) 2 

Moore Hill formation 8 

Napanee member (of Rockland

formation) 2 

Rockcliffe formation 2 

Rockland formation l 

Selby member (of Rockland

formation) 2

Shadow Lake formation 2 

Swift Current beds * 

Lower Ordovician 

March formation 2 

Oxford formation 2 

Lower Ordovician and Upper CamNepean sandstone 2 

Cambrian and Ordovician

Battlemill beds 2

Brockville beds 2

Maitland beds 2

Prescott series 2 

Upper Cambrian

Sault St. Mary sandstones l 

Precambrian

Abram conglomerate 1

Abram series 1

Acme porphyry 2

fAgawa iron-formation member 

(of Knife Lake slate) l

Ament Bay arkosites l

Animikie group l ; group in Minnesota, series in Michigan

Anstruther granite gneiss 8

Atic Oban series 1

Atikokan series *

Attewell Lake gabbro 2

Aweres formation l

Bad Vermilion Lake granite l

Batchawana series *

Belmont amygdaloidal basalt and 

tuff 1

Birch Lake series l

Blessington gabbroic anorthosite 2

Boulter gabbro 2

Boulter granite 2

Brockville granite l

Brownridge sediments 2

Brownridge volcanics 2

Bruce conglomerate 1

Bruce series l

Burleigh granite gneiss 2

Caribou complex 2

Carpenter sediments 2

Carpenter volcanics 2

Central series 2

Centre Hill complex 2

Centre Lake leuco-granite gneiss 2

Chelmsford sandstone l

Clarabell granite 2

Clearwater volcanics 2

Canada Continued 

Ontario Continued

Precambrian Continued

Cobalt series l

Cobalt tillite or conglomerate (in 

Gowganda formation) 2

Confederation granophyre *

Coniston series 2

Copper Cliff arkose *

Cosmo series 2

Creighton granite 2

Crowduck Lake conglomerate l

Daredevil formation l

Deer Lake syenite 2

Deloro group 2

Dobie volcanics 2

Dome conglomerate 1

Dome dacite (in Vipond formation) 2

Dore" conglomerate 1

Dore" series l

Driving Creek formation l

Duncan greenstone 1

Dysart granite gneiss 2

East Bay formation 2

East Bull Lake gabbro 2

Eleanor slate 1

Elsie Mountain greenstones a

Espanola granite *

Espanola graywacke l

Espanola limestone *

Frood series 2

Ghost Range complex 2

Gillies Lake porphyry 8

Glamorgan gabbro 1

Glamorgan granite gneiss 8

Goldale formation 2

Gold Centre series *

Gowganda formation l

Grassy Island granite gneiss l

Green Lake limestone * Grenville series l

Gros Cap greenstone l

Gullwing Lake conglomerate *

Gullwing Lake volcanics 2

Hallnor conglomerate 2

Handy Lake volcanics l

Hardrock "porphyry" 2

Hastings series l

Helen iron-formation *

Hill group 2

Hinchinbrooke granite 8

Howey diorite 2

Hoyle sedimentary series 2

Huronian series 1

Island Lakes gabbroic anorthosite 2

Jackfish Lake conglomerate l

Juttan volcanics l

Kakabeka formation *

Kaministikwia group l (see also 

Kaministiquia formation l)

Kashabowie series 2

Kennebec volcanics 2

Kenoran volcanics 2

Kiask series x
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 597

Canada Continued 

Ontario Conti nued

Precambrian Continued 

Killarnean granites 2 

Killarney granite * 

Krist fragmental (unit) 2 

Lac Seul series * 

Larder Lake series 1 

Levack granite 2 

Linklater formation 2 

Long Lake diorite 1 

Lorrain granite * 

Lorrain quartzite 1 

Mclntyre series l 

MacKenzie Island graywacke 2 

McKim graywacke l 

Mallard Lake metagabbro 2 

Mamainse diabase 1 

Mallorytown granite 1 

Marshall Lake series 1 

Marten River granite 2 

Matachewan series l 

Mather sediments 2 

Meach Lake conglomerate 2 

Miller Lake porphyry 2 

Millerton porphyry 2 

Miminiska series 2 

Mining Mountain granite gneiss 2 

Miniss series * 

Mississagi quartzite 1 

Moira granite * Monck Lake leuco-granite gneiss 2 

Mud Lake granite * 

Murray granite 2 

Neepawa volcanics 2 

Newfield diabase 2 

Nipogon group 1 

Oconto gabbroic anorthosite 2 

Olden gabbro 2 

Onaping tuff l 

Onwatin slate * 

Osier series 1 

Ottawa gneiss l 

Ottertail white quartzite J 

Pamouf conglomerate 2 

Parham gabbro a 

Patara schist or series * 

Pearl Lake porphyry 2 

Peewatai Lake granite 2 

Phantom Island slate 2 

Philcot-Crossecho Lakes volcanics 2

Proctors Lake limestone 1 

Quadeville metagabbro 2 

Raglan metagabbro 2 

Ramsey Lake graywacke conglomerate 1 

Rest Island granite J 

Rice Bay granite gneiss * 

Ridout series J 

Rove slate 1

St. Andrew gabbroic anorthosite 2 

Savant group 1 

Seine conglomerate l 

Seine series 1

Canada Contir.ued 

Ontario Continued

Precambrian Continued

Seine River series *

Serpent quartzite J

Shabu series 1

Shoal Lake conglomerate *

Sibley series *

Silver Lake granite 2

Slate Lake series 2

Snider series 2

Soo series *

Soultan series *

Steep Rock series or group *

Steep Rock Lake series l

Stobie series 2

Sudbury norite *

Sudbury meries *

Sudbury-Bruce series 2

Swayze series 2

Tait volcanics 2

Thanet gabbro 1

Thessalon group *

Thunder Bay slates l

Thunder Lake sediments 2

Thunder River volcanics 2

Tichborne) gabbroic anorthosite 2

Tichborne-Buck Bay granite and 

alaskite 8

Tisdale group 2

Tot-Gullwing Lakes granite 2

Trembling Lake limestone l

Trout Lake conglomerate 1

Uchi series 2

Umfraville gabbro 1

Varennesic period * Vermilion-Bluett Lakes conglomerate 8

Vermilion-Centrefire Lakes 

canics 2

Victoria gabroic anorthosite 2

Vipond series 1

Wabigoon volcanics 2

Wanapitei quartzite l

Wanipigow series » Warclub ]l<ake series * Warden-Munroe complex 2

Wawa tuff»

White Lake syenite 2

Whitewater series 1

Wilkinson anorthosite 2

Windegokan series 1

Winnipeg River granite l

Zealand sediments. 2

volBear Passage granite J 

Knuckle Island granite * 

Michipicoten schists 1 

Nowhere Island granite gneiss * 

Redgut Bay granite 1 

Prince Edward Island 

No geologic formations with type 

localities in the province of 

Prince Edward Island have been 

recorded in the Lexicon files.
598 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued 

Quebec 

Quaternary

Beauport sand and gravels * Montreal formation 1

Rupert formation 1

St. Maurice sand l

Sorel sand * 

Pleistocene

Hochelagan formation *

Lawrencian clay *

St. Lawrencian terrane * 

Pennsylvanian

Cannes de Roche formation l 

Mississippian or Pennsylvanian

Bonaventure formation J 

Devonian and Mississippian 

1 Gasp6 series 1 

Post- Devonian (?)

Stanstead granite l 

Devonian or younger

Breeches Lake granite 8

Mount Aylmer granite 2

Waterloo lava 8

Winslow granite * 

Devonian

Barre" limestone 1

Big Megantic nordmarkite or 

granite 2

Bon Ami beds »

Cape Barre" beds *

Cape Bon Ami limestone l

Causapscal formation 1

Cranbourne series 2

Famine series 1

Fortin series 2

Gaspe" limestone l

Gaspe" sandstone 1

Griffon Cove River beds 8

Lake Aylmer series l

Lake Branch formation 2

Lambton formation 1

Levis shale l

Malbaie conglomerate 1

Pic d'Aurore series 1

Price conglomerate 2

St. Alban formation *

St. Gerrard member (of Lake 

Alymer formation) 2

St. Lawrence shale 2

Scotstown granite a

Seventeen-Mile Brook beds 2

Sonneau Brook member (of Gaspe" 

sandstone) 2

York River sandstone * 

Dev onian (?)

Mount Wissick group l

St. Helens Island breccia 2

Talon formation l

Weedon granite and aplite 2 

Upper Devonian or post-Devonian

Bolton igneous series 1 

Upper Devonian

Escuminac beds l

Fleurant conglomerate l

Four Mile Brook member (of 

Heppel sandstone) 2

Canada Continued 

Quebec Continued

Upper Devonian Continued

rirate Cove formation l 

Middle or Upper Devonian

Ladystep intrusives 1 

Middle Devonian

Battery Point formation a 

Heppel formation * 

Lower Devonian

Copper Mountain group 8 

Federal sediments 2 

Grande Greve limestones l 

Mount Joli formation l 

Murailles formation 1 

Needle chert 2 

Needle Mountain group 8 

Needle Mountain limestone * 

Perce" formation * 

Perc6 Rock beds a 

Porphyry Mountain group 2 

St. Albans limestones 1 

Lower (?) Devonian

York Lake series 2 

Silurian or Devonian 

Eustis porphyry 2 

Silurian(f) or Devonian(f)

St. Juste group 2 

Silurian and Devonian 

Dartmouth River series 8 

Grande River-Portage River formation 2

St. Jean River series * 

Silurian

Anticosti group J 

Becsie formation * 

Becsie River formation * 

Bouleaux formation (in Chaleur

series)'

Cabano River limestone * 

Chaleur series l 

Chatte River limestones l 

Chicotte formation 1 

Clemyille formation (in Chaleur

series) 1 

Gascons formation (in Chaleur

series) 1

George Pond breccia 8 

Glenbrooke shale 2 

Gun River formation * 

Indian Point formation * 

Jupiter formation 1 

Jupiter River formation * 

La Vielle formation (in Chaleur

series) l

Marsouin series l 

Peasley Pond conglomerate and

sandstone 2 

St. Leon formation l 

Sargent Bay limestone 8 

Sayabec formation * 

Sherbrooke group 2 

Temiscouata group * 

Val Brilliant formation * 

West Point formation (in Chaleur

series) l
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 599

Canad a Continued 

Quebec Continued 

Middle Silurian

Anse Gascon formation 2

Mount Alexander series 2 

Ordovician or Silurian

Ladystep volcanics * Moulton Hill granite 2 

Ordovician

Basswood Creek formation 1

Beauceville series 1

Beauharnois formation 1

Becancour River formation 2

Bedford formation J

Breault member (of Nicolet River 

formation) 2

Carmel River member (of Becancour River formation) 2

Charleton formation 1

Citadel series 1

Compton formation *

Corey limestone *

Ellis Bay formation 2

English Head formation »

Eustis-Moulton Hill series 2

Farnham limestone *

Gamachian series l

Iberville formation *

Lachine formation a

Lacolle conglomerate l

Leclercville shale a

Lotbinie're shale a

Magog formation l

Matapedia series 1

Mingan formation 1

Mystic * (formation)

Nicolet River formation 2

Pierreville member (of Becancour 

River formation) 2

Pohenagamuk formation l

Pontgrave1 River formation 2

Quebec City formation 1

Romaine formation 1

St. Armand limestone l

St. Francis series 2

Sr. Hilaire member (of Nicolet 

River formation) 2

St. Marc limestone J

Sherbrooke series 2

Tomif obia slates and limestone l

Vaurial formation 1

Wallace Creek formation * 

Ordovician(?)

Cabano conglomerate *

Frontiere group 2

Gagne Brook series l

Maquerean series 1

Shickshock formation l

Weedon schist * 

Upper Ordovician

Cape Blanc formation 1

Cape Canon formation 1

Limekiln conglomerate 1

Little Indian Pool beds 2

Macastey black shale * I

Canada Continued 

Que bee Continued

Upper Ordovician Continued

Pabos formation * Whitehead formation 1 

Middle and Upper Ordovician

Mictaw series l 

Middle and Upper(f) Ordovician

Stanbridge slate l 

Middle Ordotician

Ayers Cliff formation 2

Blondeau limestone conglomerate 2

Caughnawaga member (of Laval 

formation) 2

Galet beds 2

Hull limestone l

Laval formation 2

Mile End formation 2

Montreal formation 2

Ouareau transition beds 2

Rosemount member (of Montreal 

formation) 2

St. Domini que formation 8

St. Martin formation 2

St. Michel member (of Montreal 

formation) 2

Sainte The'rese member (of Laval 

formation) 2

Shipshaw beds 2

Simard beds 2

Stony Creek formation 2

Terrebonne formation 2

Tetreauville formation 8

Tremblay beds 2 

Lower Ordovician

Aylmer formation 1

Hastings Creek formation *

Large Island beds (of^Romaine 

formation) 2

Luke Hill limestone 1

Magog conglomerate * Matane shale 2

Metis shale 2

Nay lor Ledge formation 1

Pillage Bay sandstone (of Romaine formation) 2

Pillar sandstones 2

Quarry Island beds (of Romaine 

formation) 2

Solomons Corner limestone *

Tpurelle sandstone 2

Ville Guay conglomerate 8 

Lower Ordovician and older(f)

Philipsburg series 1 

Pre-Ordoyician

Coleraine se-ries 8 

Pre-Ordovician (f)

Frontenac formation l

Stoke granite 2

Weedon porphyry 2 

Cambrian or Ordovician

Lauzon formation l

Macquereau series l

Sillery formation *
600 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued 

Quebec Continued

Cambrian and Ordovician

Cape Rosier beds 2

Carillon limestone 2

Chatham limestone 2

Lachute beds 2

Levis formation * Missisquoibay series 2

Rigaud passage beds 2

St. Flavien basic eruptives 2 

Cambrian

L'lslet formation l

Manitounuck group 1

Mistassini formation l

Pinnacle graywacke *

Pointe Leyis group 1

Redoute limestone *

Sutton schists * 

Cambrian(f)

Armagh group 2

Caldwell series *

Kamouraska formation * Rosaire group 2 

Upper Cambrian

Mansonville slates 1

Murphys Creek formation l

Oak Hill slate »

Rock River formation *

Strites Pond formation l 

Lower Cambrian

Bunker slate 1

Call Mill slate »

Charny formation 2

Dunham dolomite * Dunmore quartzite 2

Oilman quartzite l

Melbourne limestone 2

Scottsmore quartzite l

Sweetsburg slate 1

Vail slate l

West Sutton slate 1

White Brook dolomite l 

Lower(?) Cambrian

Corner-of-the-Beach formation * 

Precambrian, Cambrian, and Ordovician

Quebec group 1 

Precambrian

Abitibi group *

Albanel group 2

Aldermac syenite porphyry 2

Alison quartzite 2

Ashuanipi complex or series 2

Attikamagen formation 2

Auger Lake conglomerate z

Bachelor Lake granite 2

Barraute gabbro 2

Barry Lake gneiss 2

Beattie syenite porphyry 2

Bell River anorthosite 2

Bennett quartzite *

Bernetz gneiss 2

Billy Lake quartz porphyry 2

Black River group 2

Blake River group 2

Canada Continued 

Quebec Continued

Precambrian Continued

Bourlamaque granpdiorite 2

Brassier-Bollard biotite granite r

Bristol series *

Broadback series 1

Brock series >

Broughton series 1

Buckingham gneiss l

Buit Lake granite 2

Cache Lake gabbro J

Cadillac group 2

Capisisit Lake granite 2

Cedar Rapids granite 2

C61oron granite 2

Chadbourne series l

Chertsey facies (of Morin anorthosite) 2

Chibougamau complex l

Chioack conglomerate-sandstone *

Claverny albite granodiorite 8

Cl6ricy granodiorite 2

Ctericy sediments 2

Cl^ricy porphyritic syenites *

Coom Lake diorite-gabbro 2

Dalquier granite 2

Dastur metagabbro 2

Dauversidre granite 2

David Lake group 2

Davy Lake breccia 2

Denault dolomite 2

Dor6 Lake group 8

Doublet group 2

Dufault diorite and quartz diorite 2

Dufault granodiorite 2

Duparquet sediments 2

Duverny granite 8

Pabre series l

Fiedmont granodiorite 2

Figuery granodiorite 2

Fenimore iron formation 2

Flavrian granite 2

Fleming chert breccia 2

Fort Chimo group 2

Fourniere sediments 2

Glenwood series 2

Grenville limestone *

Goeland granite 2

Goldvue quartz diorite 2

Granada conglomerate 2

Granada greywacke 2

Guenette granite aplite 1

Gull Lake anorthosite 2

Harricanaw series *

High Falls granite *

Holmes gneiss 2

Home rhyolites 2

Howse group 2

Hub Lake syenite *

Josselin gneiss 8

Kastasakau complex 2

Kayrand quartz gabbro 2

Kensington syenite 2

Kewagama group 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 601

Canada Continued 

Quebec Continued

Precambrian Continued

Kinojevis group 2

Kirkland Lake series *

Kitchigama granite 2

Knob Lake group 2

Koksoak series 2

LaBelle series 1

Labyrinth Lake granite 2

LaCorne hornblende - granodiorite *

Lacoste series *

Lake Evans series *

Lake Mistassini group 2

Lake Robertson granite 2

Landrienne gabbro-peridotite 

complex 2

La Motte granite 2

La Motte-LaCorne granite J

La Pause syenites 2

Laporte group J

La Reine granite J

Lichen Lake granite 2

Loranger series 1

Lorrain series *

Louvieourt granodiorite 2

McWatters group 2

Maikasagi River gneiss J

Malartic granodiorite 2

Malartic volcanics 2

Matagami series 1

Menihek formation 2

Mildale gabbro J

Mistassini limestone l

Moisie series J

Moose Lake granite 2

Morin series (F. F. Osborne, 

1936, Quebec Dept. Mines 

Ann. Rept. 1935, pt. C, p. 

63)

Murdock group 2

Nastapoka series J

Nelson Lake granite 2

Nemenjish series l

Newbec breccia 2

Newport albitized quartz diorite 2

Nipissing diabase *

Noranda Lake granite 2

Obatogamau granite J

Okikeska series *

Olga quartz diorite 2

Onslow syenite *

Opaoka River complex J

Opemiska granite *

Opemiska series 1

Osisko Lake rhyolites J

Ottawa gneiss *

Palmarolle granodiorite J

Papaskwasati.group 2

Pascalis-Tiblemont granodiorite J

Pine Hill syenite 2

Pontiac schist 1 or group *

Port Harrison series J

Powell granite J

Canada Continued 

Quebec Continued

Precambrian Continued 

Preissac granite 2 

Preissac syenites 8 

Quinville granite 2 

Rapid River conglomerate * 

Red Chute quartz diorite 2 

Richmond group 1 

Richmond Gulf group 2 

Roberval (as Robervel) formation *

Roberval (as Robervel) granite l 

Rolland granite 1 

Rouyn Lake sediments a 

Ruth Lake formation 2 

Saguenay formation 1 

Saint Jude igneous breccia * 

Seaforth porphyry J 

Seal Lake series J 

Seward grits J 

Siscoe granodiorite J 

Sokoman formation 2 

Soma gabbro 2 

Stadacoma tuffs 2 

Strangway granite 2 

Sutton Mountain series * 

Temiscamie group J 

Tibbit Hill schist » 

Tonnancourt quartz monzonite * 

Trembling Mountain gneiss J 

Unison granodiorite 2 

Verneuil granite 2 

Wareham Lake series 2 

Waswanij)i granite J 

Wilson granite J 

Wishart quartz ite J 

Precambrian(t)

Pentecote granite 2

Dalhousie Mountain andesites *

Disraeli series 1

Maria latite *

Nouvelle dacites l

Rosenburg series J

Thetford series 1 

Saskatchewan 

Pleistocene

Regina clay l

Saskatchewan gravels * 

Tertiary or Quaternary

South Saskatchewan gravels l 

Miocene, middle or upper

Wood Mountain gravels * 

Oligocene

Cypress Hills beds l 

Eocene

Roche Perc6e group l

Swift Current formation * 

Eocene (?)

Estevan formation l 

Eocene, upper

Swift Current Creek formation * 

Eocene, lower

Willowbunch member (of 

Ravens crag formation) '
602 GEOLOGIC NAMES OF NORTH AMERICA

Canada Continued

Saskatchewan Continued 

Upper Cretaceous or Tertiary

Ravenscrag beds 1 

Upper Cretaceous

Battle formation 2

Belanger member (of Bearpaw 

formation) 2

Frenchman formation 2

Oxarart member (of Bearpaw 

formation) 2

Thelma member (of Bearpaw 

formation) 2

Whitemud formation ' 

Jurassic

Davidson formation^2 (subsurface)

Gravelbourg formation 2 (subsurface)

Shaunavon formation 2 (subsurface)

Vanguard formation 2 (subsurface)

Watrous formation 2 (subsurface) 

Devonian

Davidson evaporite 2 (subsurface)

Saskatchewan group 2 (subsurface) 

Upper Devonian

Duperow formation 2 (subsurface) 

Ordovician

Black Island member (of Winnipeg formation) 2

Deer Island member (of Winnipeg formation) 2

Grindstone Point unit (in Winnipeg formation) 2 

Precambrian

Athona granite *

Beaverlodge series 2

Brindson Lake granite 2

Cameron Island granite 2

Churchillian group J

Elliot Bay conglomerate 2

Frontier Lake conglomerate 2

Kenwood River granite 2

Kisseynew gneisses J

La Ronge group 2 ; Lac La Rouge 

series *

Lodge Bay granite 2

Mackintosh Bay granite 2

Missi formation 1

Morin limestone * Nistoassini-Nayelles Lakes granite 2

Pebble Island conglomerate 2

Waddy-Contact Lakes granite 2

White Lake granite 2 

Yukon 

Recent

Kluane silt 2

Slims Valley silt 2 

Pleistocene and Recent

Selkirk volcanics 1

Canada Continued 

Yukon Continued 

Tertiary or Pleistocene

Carmack basalt 1

Klusha intrusives * 

Tertiary (see also Triassic and 

Tertiary)

Flat Creek beds 1

Horsefly gravels 1

Hutshi group 1

Klondike drift J

Miles Canyon basalts 2

Skukum volcanic rocks 2

Wheaton River volcanics l 

Tertiary (?)

Chieftain Hill volcanics J

Schwatka andesites * 

Cretaceous

Perkins volcanics *

Tutshi series * 

Lower Cretaceous

Dezadeash group 2 

Jurassic or Cretaceous

Laberge series * NordenskiOld dacite 1 

Upper Jurassic or Cretaceous

Quiet Lake intrusives J

Tantalus conglomerate l 

Upper Jurassic or Lower Cretaceous

Mount Nansen group 2 

Upper Jurassic or Cretaceous(f)

Glenlyon granodiorite 2 

Jurassic and Triassic(f)

Mush Lake group * 

Triassic to Tertiary

Huishi-Schwatka group J 

Triassic

Lewes River series J 

Paleozoic(f)

Moose Hide group * 

Carboniferous or Permian

Kaskawulsh group 2 

Carboniferous

Raquet series l 

Carboniferous (f)

Braeburn limestone * 

Pennsylvaman to Lower Cretaceous

Orange group > 

P re-Carboniferous

Harvey group 2 

Devonian or Carboniferous(?)

Montague group * 

Ordovician

Tatonduk shales 1 

Cambrian

Hunker Creek series l

Indian River series J 

Cambrian(?)

Kluane schists 2 

Precambrian

Pelly gneiss J

Razor Mountain group l

Yukon group l 

Precambrian(f)

Klondike series !

Mount Stevens group or series J
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 603

Canada Continued 

Yukon Continued 

Age(f)

Hunker series l

Indian River group l

Moosehide diabase l

Windy Arm series 1 

St. Pierre and Miquelon 

Post-Cambrian

Galantry breccia * 

Precambrian

Cape series * 

Mexico

Aguascalientes 

Cretaceous

Onto limestone * 

Jurassic(f)

Alta Mira limestone l 

Age(f)

Santa Francisea rhyolite * 

Baja California 

Quaternary

Tres Vfrgenes volcanics a 

Pleistocene

Santa Rosalia formation 2 

Tertiary

Cuesta formation 1 

Pliocene

Salada formation * 

Pliocene, upper

Infierno formation a

Marquer formation a 

Pliocene, middle

Carmen formation J

Gloria formation a 

Pliocene, lower

Boleo formation J

San Marcos formation s 

Miocene

Comondu formation l

Isidro formation * 

Oligoctne(?) to Miocene, lower (?)

San Gregorio formation a 

Oligocene(f)

Purisima Nueva formation a 

Eocene

Tepetate formation 1 

Eocene, lower

Sepultura formation J 

Mesozoic

Todos Santos formation l 

Cretaceous

Catarina formation 1

Encina Sola quartz diorite 8

La Grulla granodiorite 2

La Providencia granite 2

Mesa sandstones *

Rosario formation *

Santa Eulalia formation a

San Fernando formation 2

San Jose" quartss diorite 2

San Telmo formation J 

Lower Cretaceous

Alisitps formation 2 

Paleozoic(?)

Volcan Peak group *

Mexico C pnti nued 

Baja California Continued 

Precambrian

Volcan group * 

Campeche 

No geologic formations with type

localities in the State of Campeche have been recorded in the

Lexicon files. 

Chiapas

Miocene or Pliocene

Tenejapa formation l 

Miocene, upper

Simojovel formation l 

Eocene or Oligocene

Triunfo formation * 

Cretaceous

Comitdn limestone J

Cristobal formation l

Petapa (formation) 2

Tuxtla formation l 

Permian

Grupera formation *

La Vainilla limestone *

Paseo Hondo formation *

Santa Rosa littoral marine formation l 

Age(?)

Cintalapa beds a 

Chihuahua 

Tertiary

Talamantes volcanic series a 

Tertiary, lower

Bufa rhyolite series *

Divisidero rhyolite series * 

Pliocene, upper

Boquilla formation a

Temosacliic formation a

Yepomer;a formation 2 

Mesozoic

Santa Barbara series s 

Cretaceous

Angela formation l

Buena Suerte formation l

Los Lamontos formation *

Ojinaga formation *

San Vicente formation l

Soledad beds *

Sonora formation l

Tlaxcala formation l

Triste formation l 

Lower Cretaceous

Aurora formation *

Las Vigas. formation x 

Age(?)

Chorreras granite l

Conchos gravels 1

Navosaigame formation 1

Plomosas formation J 

Coahuila

Pleistocene^)

Mayrdn formation 8 

Pliocene(f)

Santo Madero formation 2
604 GEOLOGIC NAMES OF NORTH AMERICA

Mexico Continued 

Coahuila Continued 

Cretaceous

Las Cortinas formation 2

Las Esperanzas formation *

Indidura formation 1

Monclova shale 1

Papagayos formation1 ; Papagallos formation *

Peyotes division 1

Rubio shale 1 

Upper Cretaceous

Caracol formation 2

Difunta formation 2

Parras shale J 

Lower Cretaceous

Barril Viejo shale 2

Coahuila group 2

Cuesta del Cura limestone a

Cupido limestone 2

La Mula shales 2

La Pena formation 2

Menchacha limestone a

Padilla limestone J

Parritas formation 2

Patula arkose 2

San Marcos arkose 2

Taraises formation 2 

Pre-Cretaceous

Boquilla slate J 

Upper Jurassic

La Caja formation 2

La Casita formation 2

La Gloria formation 2 

Paleozoic

Delicias beds * 

Permian

Pichagua limestone 2 

Colina 

No geologic formations with type

localities in the state of CoUna

have been recorded in the Lexicon files. 

Distrito Federal 

Pleistocene

Armenta horizon (of Becerra formation) *

Morales caliche 2

Tacubaya formation * 

Pleistocene (?)

Tarango formation 2 

Durango 

Cretaceous

Los Muertos formation l 

Lower Cretaceous

Carbonera formation 2

Durango group 2 

Age(?)

Copper Queen intrusion l

Guardarraya intrusion 1 

Guanajuato 

Tertiary

Guanajuato conglomerate l 

Cretaceous or Tertiary

Bufa sandstone *

Mexico Continued 

Guanajuato Continued 

Triassic

La Luz basalts * 

Age(?)

La Luz schists l

Pinguico rhyolites * 

Guerrero

Upper Cretaceous

Escamela limestone 1 

Middle Jurassic

Tecqcoyunca beds 2 

Triassic(f)

Cualac quartzite 2 

Hidalgo

Tertiary, middle or upper

Las Espinas volcanics 2 

Tertiary, lower or middle

El Morro fanglomerate 2 

Oligocene

Huatla basalt l 

Cretaceous

Bofay formation 2

El Monte limestone 2

Maltrata division J

Necoxtla formation l 

Jalisco

Quaternary

Estancia basalt * 

Pleistocene (?)

Chapala beds 1 

Tertiary

Tizapan basalt * 

Mexico (Estado) 

Recent

Barrilaco caliche 2

Noche Buena formation 2 

Pleistocene, upper

Becerra formation 2

Totolssingo formation 2 

Miocene

Ajusco formation 2 

Oligocene (?)

Sierra Nevada formation 2 

Upper Cretaceous(?)

Jasso formation 2 

Michoacan 

Tertiary

Zumpimito formation 2 

Lower Cretaceous

Cochixtla beds 2

Mezcal beds 2 

Middle Cretaceous

Chile limestone J 

Morelos 

Nayarit

No geologic formations with type

localities in the States of Morelos

and Nayarit have been recorded in

the Lexicon files. 

Nueyo Le6n 

Miocene, lower

Norma gravel * 

Eocene

Arenal formation *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 605

Mexico Continued 

Nuevo Le6n Continued 

Cretaceous

Tulillo beds » 

Upper Cretaceous

San Juan formation * 

Lower Cretaceous

Nuevo Le6n group 2 

Oaxaca

Pleistocene, upper

Colotepec formation 2 

Tertiary

Cuicatlan formation 2 

Tertiary(f)

Huajuapan beds 2

Yanhuitlan beds 2 

Miocene, upper

Tuxtepec formation l 

Cretaceous

Santa Cecilia limestone 2 

Upper Cretaceous

Petlalcingo limestone 2

Tilantongo marls 2 

Middle Cretaceous

Magdalena series 2 

Lower Cretaceous

Tlaxiaco beds 2 

Pre-Cretaceous

Cacalote sandstone 2

Yogana series 2 

Upper Jurassic

Teposcolula limestone 2

Tlaltepexi gypsum series 2 

Lower Jurassic

Mixtepec - El Consuelo beds J 

Pre-Mesozoic

Acatlan schists 2 

Puebla 

Cretaceous

San Juan Raya formation >

Zapotitlan formation 1 

Middle Cretaceous

Cipiapa limestone 2 

Lower Jurassic

Totolapa facies 2 

Queretaro

Upper Cretaceous

Soyatal formation 2 

Lower Cretaceous

Cerro Ladron facies (of El 

Doctor limestone) 2

El Doctor limestone 2

El Socavon facies (of El Doctor 

limestone) 2

La Negra facies (of El Doctor 

limestone) 2

San Joaquin facies (of El Doctor

limestone) 2 

Quintana Roo 

Miocene

Dos Bocas formation 2

Estero Franco formation 2

Mexico Contir ued 

San Luis Potosi 

Eocene

Tanlajas formation * 

Cretaceous

Cardenas formation '

Xilitla beds 2 

Upper Cretaceous

Guadalcazar limestone 2

San Felipe formation *

Taninul limestone 1

Velasco formation * 

Lower Cretaceous

El Abra limestone *

Tamasopo series * 

Lower Cretaceous(f)

Novillo beds 1

Tenistipa limestone ' 

Upper Jurassic

Corona formation 2

Pimienta beds l

Taman beds 1 

Upper (?) Jurassic

Santa Emilia formation 2

San Jos6 formation 2 

Sinaloa

No geologic; formations with type 

localities in the State of Sinaloa 

have been recorded in the 

Lexicon files. 

Sonora 

Quaternary

Santa Domingo flood plain deposits ] 

Tertiary

Henrietta diorite porphyry],1

Trincheras division * 

Late Tertiary

Baucari division 1 

Mesozoic

Lista Blanea complex or division l 

Upper Mesozoic or lower ^Tertiary

Campana, diabase and gabbro *

Colorada quartz porphyry 2

Mesa formation 2 

Cretaceous(f)

Tarahumara formation 2 

Upper Cretaceous

Cabullona group J

Camas sandstone *

Packard shale 1

Snake Ridge formation x 

Lower Cretaceous

Morita formation *

Palmer fc»rmation *

Potrero formation 2 

Triassic

Barranca division l 

Permian

Tigre formation 2 

Upper Pennsylvanian

Caborca series * Monos beds *

Nacozari limestone * 

Lower Pennsylvanian

Gamusa beds 2
606 GEOLOGIC NAMES OF NORTH AMERICA

Mexico Continued 

Sonora Continued 

Mississippian

Represo beds *

Venada beds * 

Devonian or Carboniferous

Santa Rosa beds * 

Cambrian

Bolza quartzite l

Esperanza limestone * 

Upper Cambrian(f)

Puertecitos limestone * 

Middle Cambrian

Arrojos formation *

Tren formation * 

Lower Cambrian

Buelna formation *

Cerro Prieto formation *

Proveedora formation *

Puerto Blaneo formation * 

Precambrian or Lower Paleozoic

Atil sandstone * 

Precambrian

Altar schists *

Capote quartzite *

Jajoba formation * 

Age(f)

Bella Union granite *

Caliche Mountain rhyolite l

Cananea granite l

Capote limestone l

Caridad conglomerate *

Caridad quartz monzonite *

Cuitaca granodiorite l

Durazno formation J

Elenita syenite porphyry l

Elisa quartz monzonite porphyry »

El Torre syenite 1

Encinas quartz porphyry *

Golden Bar andesite rocks *

Huacalote rhyolite 1

La Brisca formation * Magallanes rhyolite * Mariquita diabase 1

Nacozari granite *

Pilares monzonite *

San Pedro andesite *

Santo Domingo rhyolite l

Saracachi formation *

Tinaja granite porphyry * 

Tabasco 

Pleistocene

Tierra Colorada formation * 

Miocene

Amate (Lower and Upper) formation *

Encajonado formation a

Gonzalez sands * 

Miocene, upper

Belem formation *

Tres Puentes formation * 

Miocene, middle

Zargazal formation 2 

Miocene, lower

Prudencia sandstone *

Mexico Continued 

Tabasco Continued 

Oligocene

Enearnaei6n shale 2 

Macuspana limestone 2 

Macuspana shale 2 

Misopa shales * 

Eocene or Oligocene 

Pichucalco beds * 

Eocene, middle and upper 

China! limestone 2 

Chinal shales *

Puente de Piedra conglomerate * 

Upper Cretaceous 

Ocozocualta (formation) a 

Paso Mono limestone 3 

Lower Cretaceous 

Chival (formation) * 

Guayal limestone 2 

San Ricardo (formation) 2 

Tamaulipas 

Tertiary, upper 

Cerro Topila beds J 

Quintero limestone 2 

Pliocene and Pleistocene or Recent 

Reynosa formation J and limestone * 

Miocene

Pamoranes beds (in San Fernando formation) 2 

Miocene, lower

Guajalote formation * 

Oligocene

Palo Alto formation 2 

Pinole formation J 

Saladito formation 2 

San Fernando formation * 

San Rafael formation x 

Eocene

Los Esteros formation 1 

Eocene, upper

Los Guerros sandstone member

(of Fayette formation) l 

Roma sandstone member (of

Fayette formafcion) 1 

Sanchez sandstone member (of

Fayette formation) * 

Villa Nueva sandstone member

(of Fayette formation) l 

Eocene, middle

Alamo sandstone member (of

Yegua formation) 1 

Alberca sandstone member (of

Yegua formation) * 

Mier sandstone member (of

Yegua formation) * 

Once Lomas sandstone member

(of Carrizo formation) * 

Saucito sandstone member (of

Cook Mountain formation) 1 

Eocene, lower

Chalma shale (in Chicontepec

formation) 2

Jaco sandstone (in Chicontepec 

formation) 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 607

Mexico Continued 

Tamaulipas Continued 

Eocene, lower Continued

Puerto Colorado sandstone member (of Indio formation) l 

Upper Cretaceous

Solis limestone J

Victoria limestone l 

Middle Cretaceous

Otates horizon (of Tamaulipas 

limestone) 2

San Tamaulipas formation J (subsurface)

Tamaulipas limestone J 

Jurassic

Huizachal formation J

Oliyido formation 2 

Permian

Guacamaya beds J 

Mississippian

Peregrina formation * 

Tlaxcala

No geologic formations with type 

localities in the State of Tlaxcala have been recorded in the 

Lexicon files. 

Vera Cruz 

Tertiary

Ozuluama series * 

Pliocene

Acalapa conglomerate 2 

Miocene

Coatzacoalcos formation l

Papantla formation J

Punt a Gorda (formation) a

Teapa (formation) 2

Tuxpan formation l

Veronica (formation) 2 

Miocene, upper

Cedral formation J 

Miocene, middle

Agueguexquite formation 1

Pajaritos (formation) J

Paraje Solo formation *

Santa Rosa beds x Miocene, lower

Concepcion (Lower and Upper) 

series 2

Encanto series J

Filisola series 3 

Oligocene

Alazan shale 1

C6atzintla formation 8

Deposito series 3

Escolin series J

La Laja series 3

Meson beds 1

Palma Real 1 (formation)

Temapache limestone l

Texistepec (formation) 8 

Oligocene, lower

Huasteca formation J 

Eocene to Oligocene

Horcones formation 2

Mexico C ontinued 

Vera Cruz Continued 

Eocene

Chapatan formation 2

Chicontepec formation 1

Guayabal formation l

Idolo beds l (subsurface)

Tantoyuca formation. l

Tempoal shale * 

Eocene, upper

Carmen (formation)f

Chapappte formation * 

Eocene, middle and upper

Nanchital conglomerate series * 

Eocene, lower

Aragon formation l

Nanchital shales J

Uzpanapa conglomerate 8 

Cretaceous

Limon beds * Orizaba limestone *

Tamabra * (formation)

Tamesi formation l 

Upper Cretaceous

Agua Nueva formation a

Barranc6n beds J

Mendez formation *

Panuco gray limestone x (subsurface)

Penuela limestone J 

Middle Cretaceous

Sierra Madre limestone *

Tamiahua faeies J 

Lower Cretaceous

Comal series 2 

Jurassic

San Bartolo formation 2 

Upper Jurassic to Lower Cretaceous

Chinameca limestone * 

Lower Jurassic

Divisadero faeies 2

Huayacocotla formation a 

Yucatan 

Tertiary

Sierrita limestone J 

Oligocene or Miocene

Icaich6 formation 2 

Zacatecas 

Tertiary

Mazapil conglomerate * 

Middle Cretaceous or older

Proafio group 2 

Lower Cretaceous

Nazareno bed (in Cupido limestone) 2

Nieva shale J 

Upper Jurassic

Zuloaga limestone s 

Central America 

British Honduras 

Miocene

Rio Dulce limestone l
608 GEOLOGIC NAMES OF NORTH AMERICA

Central America Continued 

Costa Rica 

Pliocene

Limon clays *

Penitas formation 2

Suretka conglomerate l 

Miocene

Bonilla formation l

Nicoyan series *

Sheroli formation l 

Miocene, lower

Uscari shale 1 

Oligocene or lower Miocene

Amoura shale 2 

Oligocene

Guallava sandstone '

Manzanilla beds 1 

Eocene(?)

Cartago formation 1

Puerto Carballo arenaceous limestone series J 

Cretaceous or Lower Tertiary

Desamparados formation 1

San Miguel limestone l 

Age(f)

Aguacate series l

Colorado limestone J

Rio Seco diabase *

Sabana Grande siliceous limestone J 

El Salvador 

Pliorene(?)

Rio Torola limestone * 

Guatemala 

Tertiary

Sepur beds J 

Miocene(?)

Santo Toribio beds * 

Mesozoic

Ixcoy limestone 2 

Cretaceous

Coban limestone 2 

Upper Cretaceous (f), Eocene(f), or 

Oligocene(?)

Pet6n marls and limestone 2 

Lower Cretaceous

Metapan formation l 

Honduras 

Pliocene(?)

Escobales granodiorite 2

Guacamayas dacite tuffs and 

flows J

Jutiapa rhyolitic tuffs and sediments 2

Ilanco Quemado dacite z 

Pliocene, lower

Gracias formation 2 

Miocene

Toledo series 2 

Cretaceous

Cantarranas formation 2

Colonia andesitic tuffs and breccias J

Crucero tuffaceous dacite flows 2

Plancitos formation 2

Central America Continued 

Honduras Continued 

Cretaceous(?)

Aquacatal porphyritic andesite 8

Reforma hypersthene andesite a 

Upper Cretaceous or lower Tertiary

Valle de Angeles formation 2 

Upper Cretaceous

Esquias formation l 

Upper Triassic

El Plan formation *

Tegucigalpa * (formation) 

Pre-Upper Triassic

Peten formation * 

Nicaragua 

Quaternary

Saclin formation *

Soulala formation l 

Tertiary

Brito formation * 

Oligocene(?)

Machuca formation * 

Panamd and the Canal Zone 

Pleistocene and Recent

Atlantic muck J

Chargres alluvium 2

Pacific muck 2 

Pleistocene

Aguadulce formation * Armuelles formation 2

Mariato formation l

Mount Hope formation l

San Carlos formation 1 

P re-Pleistocene

Azuero formation 1 

Pliocene

Caribbean limestone '

Charcp Azul formation 2

Piliguilla conglomerate 2 

Pliocene, lower

Chagres sandstone l

Toro limestone ' member (of

Chagres sandstone) 

Pre-Pliocene

Ancon rhyolite 2

Chiva Chiva andesite 2

Point Farfan diorite 2 

Miocene, upper

Chucunaque formation 2

Limones shale 2 

Miocene, upper, or Pliocene, lower

Burica sandstone 2 

Miocene, middle and upper

Gatun formation 1 

Miocene, middle

Cativa marl (in Gatun formation) 2

Pucro sandstone J

Tuira formation 2 

Miocene, middle(?)

Sabanitas formation J 

Miocene, lower .

Alhajuela sandstone member (of 

Caimito formation) 2

Bruja Island dolerite 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 609

Central America Continued

Panamd and the Canal Zone Con. 

Miocene, lower Continued

Cerro Gigante basalt 2

Chillibrillo limestone member (of 

Caimito formation) 2

Chorrera basalt 2

Cucuracha formation * Culebra formation 1

Emperador limestone * member 

(of Culebra formation)

La Boca marine member (of

Panamd formation) 2

Miraflores basalt 2

Panama formation *

Pedro Miguel agglomerate member (of Panamd formation) 2

Sosa Hill basalt 2 

OUgocene or Miocene

Vamos Vamos beds l 

OUgocene and Miocene

Caimito formation l 

OUgocene

Gamboa formation 2

Mona shale * Monkey Hill formation *

Pefia Blanca marls '

Sensori agglomerate and limestone l

Tigre limestone l

Watsi Shale 1 

Qligocene(t)

Bas Obispo formation 1 

Oligocene, upper, or Miocene, lower

Rio Duque shales 2 

Oligocene, upper, and Miocene, lower

Aquaqua formation 2

Carba facies (of Caimito formation) 2

Tapaliza shales 2 

Oligocene, upper

Arusa formation 2

Las Cascadas agglomerate (as 

Las Cascades agglomerate ')

Quebrancha limestone member

(of Caimito formation) 2 

Oligocene, lower-upper

Bohio formation (as conglomerate ») 

Oligocene, lower

Clarita limestone 2 

Eocene

Bucard formation 2

Mindi Hill beds 2 

Eocene, upper

fBohio limestone '

Casa Larga marls 2

David formation 2

Tranquilla shale 2 

Eocene, middle and upper

Gatuncillo formation 2 

Pre-Eocene

Barbaeoas formation 2

Miraflores pumice 2

San Pablo phase (of Barbacoas 

formation) 2

Central America Continued 

Panamd and the Canal Zone Con. 

Cretaceous and Eocene

Mata Chin formation a 

Age(?)

The names Bijuco, Guaxaro, and 

Rio Santa Maria are erroneously listed in lithic combinations with age unknown in 

part A of this bulletin, owing 

to mistranslation. 

Canazas formation J 

Montijo conglomerate l 

Obispo breccia * 

Obispo limestone l 

Parita formation * 

Santiago formation l 

Torio limestone l 

Veraguas crystalline series 1 

Wemir agglomerate 2 

Greenland

Detailed information on the 

geologic formations of Greenland can be found in the 

Lexique Stratigraphique International, v. 1, Europe, fascicule 

1 a, Greenland. 

Pleistocene

Baffin till»

Tertiary (see also CretaceousTertiary)

Cape Edward Holm complex 2 

Dreibuchten zone 8 

Kangerdlugssuaq complex 2 

Kap Simpson complex 2 

Skaergaard complex 2 

Tertiary(?)

Cape Parry alkaline complex 2 

Tertiary, upper, to Quaternary,

lower

Skeldal conglomerate 2 

Miocene

Sinnifik strata 2 

Atanikerdluk beds 2 

Ipsorisok strata 2 

Eocene

Cape Dalton formation 2 

Sabine Island formation 2 

Eocene(f)

Lilloise complex 2 

Prinsen af Wales Bjaerge lavas 2 

Cretaceous- Tertiary

Nugsuak formation 2 

Upper Cretaceous 

Albrechtsbugt facies 2 

Atane beds 2 ; see also Atane beds 1 

Kap Gustav Holm series 2 

Knudshoved beds 2 

Patoot beds 2 ; see also Patoot beds l 

Upper Cretaceous(?)

Kangerdlugsuak series 2 

Lower Cretaceous

Cape Hamburg formation 2 

Falskebugt beds 2 

Hartz Fjaeld formation 2
610 GEOLOGIC NAMES OF NORTH AMERICA

Greenland Continued

Lower Cretaceous Continued

Home Foreland beds 2

Kome beds; 2 see also Kome beds 1

Kuhnpas facies 2

Lindemansbugt facies 2

Niesen beds 2

R0dryggen beds a

Young Sound facies a 

Jurassic

Cape Leslie sandstone J

Chatton Bay sandstone 2 

Upper Jurassic

Cape Maurer formation 2

Chareotbucht sandstone 2

Fossil Mountain formation 2

K10ft I formation J

Koch Fjaeld formation 2

Kuhn beds 2

Rigi series 2

Traekpas formation 2

Vardekl0ft formation 2 

Lower Jurassic

Neills Cliff formation J 

Triassic (see also Permo-Triassic)

Fleming Inlet series * 

Upper Triassic

Cape Biot formation 3

Cape Stewart formation s 

Lower Triassic (see Permian or

Lower Triassic) 

Eotriassic

Wordie Creek formation J 

Paleozoic

Cape Fletcher series J 

Lower Paleozoic

Angmagsalik granite 2

Cape Greg gneisses 2

Emilia group 2

Franz Josef beds *

Grejsdalen granite J

Hagar group 2

Hurry Inlet gneisses 2

Isfjord zone J

Milneland granite J

Store Fjord gneisses J

Store Fjord granite 2

Svejstrips injection complex J

Sylya-Maria group 2 

Permian or Lower Triassic

Cape Brown and Hurry Inlet

series J 

Per mo- Triassic

Mount Nordenskiold formation 2 

Per mo- Triassic (?)

Klitdal formation 2 

Permian

Cape Stosh formation 8

Depot Island formation * 

Lower Permian

Domkirken series 2 

Upper Carboniferous

Halle Mountains formation * Mallemuk Mountain formation J 

Lower Carboniferous

Mount Pictet formation 2

Greenland Continued

Lower Carboniferous (f)

Foldvik Creek formation J 

Middle Pennsylvanian

Blyklippen series 2 

Devonian or younger

Randb01 conglomerate * 

Devonian

Cape Graah formation 2

Kap Bull series 2

Kap Franklin conglomerate 2

Kap Kolthoff series 2

Mont Celsius series 2 

Devonian(f)

Hurry Inlet granite 2

Igaliko sandstone J

Ilimausak complex 2

Ilimausak porphyries J

Kakarsuak porphyrite 2

Tasek porphyrite 2 

Upper Devonian

Mount Hogbom series 2 

Middle Devonian

Kap Franklin-Vildtal granite 2

Margrethetal series 2

Mount Werner series 2

Ravnefjeld formation 2

Rodetal conglomerate (in Magrethetal series) 2

Vildtal series 2 

Pre- Devonian

Cape Wardlaw complex 2 

Silurian (see also Ordovician and 

Silurian)

Polaris Harbour formation 2 ; see 

also Polaris Harbour forma- tion l 

Silurian(f)

Profilfieldet shales 3 

Middle Silurian

Cape Schuchert formation 2

Cape Tyson formation 2

Dr0mmebjerg limestone 2

Offley Island formation2 ; see alsoOffley Island formation 1 

Ordovician and Silurian

Centrum limestone 2 

Ordovician

Narwhale Sound formation * 

Middle or Upper Ordovician

B0rglum River limestone 2

Cape Weber formation 2 

Middle and Upper Ordovician

Cape Calhoun series 2 

Middle Ordovician

Cape Webster formation 2

Gonioceras Bay formation 2

Troedsson Cliff formation 2 ; see 

also Troedson Cliff formation l

Wright Bay formation 2 

Middle Ordovician(f)

Painted formation * 

Lower Ordovician

Cape Clay formation 2

Cass Fjord formation 2

Danmarks Fjord dolomite *
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 611

Greenland Continued

Lower Ordovidan Continued 

Eskimo Hut formation 2 

Nunatami formation 2 ; see also

Nunatami formation * 

Nygaard Bay limestone 2 

Poulsen Cliflf shale 2 

Wandel Valley limestone 2 

Cambrian or Ordovidan

Kap Holbaek sandstone 2 

Cambro-Ordovidan (?)

Hurry Inlet formation 2 

Cambrian (see Precambrian or Cambrian- and Precambrian to 

Cambrian)

Cape Frederick VII formation 2 

Dolomite Point formation 2 

Hvolithus Creek formation 2 

Cambrian(f)

Br0nland Fjord dolomite 2 

Upper Cambrian(f) 

Pemmican River formation 2 ; 

see also Pemmican River formation >

Middle Cambrian 

Blomsterbaek limestone member 

(of Cape Wood formation) 2 

Cape Russell member (of Cape

Wood formation) 2 

Cape Wood formation 2 

Ymer formation 2 

Middle Cambrian(?)

Blomsterbukta quartzite and

shale 2

Hidden Valley formation 2 

Noa Lake quartzite 2 

Lower Cambrian 

Bastion formation 2 

Cape Kent formation 2 

Ella Island formation 2 

Marshall Bay formation 2 

Petermann series 2 ; see also

Petermann series * 

Wulff River formation 2 

Lower Cambrian(f) 

Spiral Creek formation 2 ; see also

Spiral Creek formation l 

Precambrian or Cambrian 

Cape Ingersoll dolomite 2 

Cape Leiper dolomite 2 

Cape Oswald formation 2 

Rensselaer sandstone 2 

Tillite Canyon formation 2 ; see 

also Tillite Canyon formation 1 

Precambrian to Cambrian

Tfimmer Bay group 2 

Precambrian

Agpat formation 2

Alpefjord series (of Eleonore

Bay formation) 2 

Arsuk group 2 

Canyon series (in Eleonore Bay

formation) 2 

Cape Rawson beds 2 

Danish Village formation 2 

Dombjerg paraschists 2

504835 59 14

Greenland Continued

Precambrian Continued

Egedesminde gneiss complex 2 

Eleonore Bay formation 2 

Eleonores S0 series 2 

Eremitdal series (in Eleonore

Bay formation) 2 

Etah formation 2 

Finnefjeld complex 2 

Gardar formation 2 

Greenlandian 2 

Gregory series 2 

Ikertoq gneiss complex 2 

Isortoq gneiss complex 2 

Julianehaab granite 2 

Kangamiut diabase 2 

Kangamiut gneiss complex 2 

Ketilidian period 2 

Kungnat granite 2 

Maalebjerg series (in Eleonore

Bay formation) 2 

M0rkebjerg formation a 

Mystery quartzite series 2 

Narssarssuk formation 2 

Nunarsuit granite 2 

Rivieradal sandstone 2 

Sermilik group 2 

Stenorkenen phyllites 2 

Sukkertoppen gneiss or granite a 

Sydpr0ven granite 2 

Sydvejdal marbles a 

Taagefjeldene graywackes 2 

Thule formation 2 ; see also

Thule formation * 

Tvege banded psammitic/pelitic

group 2

Tyroler series 2 

Tyrolerdal banded psammitic/

pelitic group 2 

Tyrolerdal group 2 

Ulvebjerg sandstones and tillites 2

Westendspids pelitic group 2 

Wolstenholme quartzite 2 

Precambrian (?)

Marmovigen conglomerate 2 

Norsemandal sandstone 2 

Age(f)

Bj0rne 0 conglomerate 2 

Campanuladal sandstones and

limestones 2 

Fyns S0 dolomite 2 

Milne Land quartzite * 

R0de 0 conglomerate 2 

Bermuda

Pleistocene

Belmont limestone * 

Devonshire formation l 

Harrington soil 2 

McGalls soil s 

Pembroke eolianite 2 

St. Georges soil 2 

Shore Hill soil 2 

Signal Hill soil 2 

Somerset eolianite 8
612 GEOLOGIC NAMES OF NORTH AMERICA

Bermuda Continued

Pleistocene Continued

Southampton eolianite * Warwick eolianite * 

Pliocene

Walsingham formation * 

Age(?)

Paget formation l 

West Indies

Small islands of the West Indies from 

which no geologic formations have 

been named are not listed here. 

Detailed information on these and 

the larger islands except Cuba can 

be found in the Lexique Stratigraphique International, v. 5, Amerique Latine, fascicule 2 b, Antilles. 

Anguilla, British West Indies 

Miocene, lower

Anguilla formation * 

Antigua, British West Indies 

Pleistocene

Friars Hill gravel and marls l 

Oligocene

Cassada-Garden gravels *

Central Plain tuff formation *

Hodges Hill sandstone *

Seaforth limestone l 

Oligocene, upper

Antigua formation * 

Age(f)

Friars Hill series * 

Aruba, Netherlands West Indies 

Upper Cretaceous

Aruba formation 2 

Bahama Islands

No geologic formations in the Bahama Islands have received

names.

Barbados, British West Indies 

Quaternary

Bath-Reef series l 

Tertiary

Ragged Point series * 

Oligocene, upper

Bissex Hill marl 2 

Oligocene, lower

Codrington College marl * 

Eocene

Mount Hillaby beds 2

Mount Poyer sandstone (in Scotland beds) 2 

Eocene, upper

Bath beds (in Oceanic formation) *

Joes River beds 2 

Eocene, upper, to Oligocene

Oceanic formation 2 

Eocene, middle

Chalky Mount group l

Mount All beds (in Scotland 

formation) 2

Murphys beds (in"Scotland formation) 2

West Indies Continued

Barbados, British West Indies Con. 

Eocene, lower and middle

Scotland beds l 

Eocene, lower

Morgan Lewis beds (in Scotland 

formation) 2

St. Andrews beds 2

Walkers beds (in Scotland formation) 2

Barbuda, British West Indies 

Pleistocene

Barbuda limestone 2 

Bonaire, Netherlands West Indies 

Pleistocene

Seroe Largo limestone 2 

Eocene, upper

Seroe Montague limestone J 

Cretaceous or Tertiary

Rincon formation 2

Soebi Blanco conglomerate 2 

Cretaceous

Washikemba formation 2 

Cayman Islands, British West Indies 

Pleistocene or Recent

Bluff limestone l

Ironshore limestone l 

Cuba

Quaternary

Coastal limestone * 

Recent

Surgidero formation 8 

Pleistocene

Jaimanitas formation 2

Zapata formation l 

Pleistocene(f)

Las Puercas marl * 

Pliocene

Matanzas series l 

Miocene

La Cruz marl 1

Manzanillo formation 2

Punta Maisi limestone * 

Miocene, upper

El Abra formation * 

Miocene, middle

Canfmar formation * 

Miocene, lower

Limonar formation 2 

Oligocene or Miocene

Cojimar formation l

Guantanamo shale *

Guines limestone l

Maquay formation * Yumuri limestone l 

Oligocene and Miocene

Nipe series 2

Paso Real formation 2 

Oligocene

Adelina marl 2

Farallon Grande breccia 1 

Oligocene, upper

Tarara formation 2 

Oligocene, middle

Col6n formation 2

Jaruco formation 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 613

West Indies Continued 

Cuba Continued 

Oligocene, lower

Alava formation a Morcate formation 2

Tinguaro marl 2 

Eocene and Oligocene

Guato formation 2 

Eocene

Bejucal formation *

Cobre series 2

Cubitas limestones 2

Guaso limestone *

Principe formation l 

Eocene, upper

Consuelo formation 2

Jabaco formation 2

Jicotea member (of Jabaco formation) 2

San Luis formation l 

Eocene, middle

Charco Redondo limestone 2

Elmira formation 2

Loma Candela formation x

Pefi6n formation 2 

Eocene, lower

Capdevila formation 2

Toledo member (of Universidad 

formation) 8

Universidad formation * 

Paleocene

Remedios limestone 2 

Cretaceous > 

Artemisio limestone * Camajuani formation l

Cayetano formation l

El Cano formation l

Havana shales *

Lucero beds *

Luyano marls * Madruga chalk l

Tuff series a 

Cretaceous(?)

Vinent formation l 

Upper Cretaceous

Camajan breccias (in Habana 

formation) 2

Habana formation 1

Jaronu limestone 2

La F6 limestones 2

Loma Yucatan limestone 2

Provincial limestones (in Tuff 

formation) 2

Tinajita formation 2

Yucatan limestones 2 

Lower Cretaceous

Aptychi limestone or formation a 

Jurassic

San Cayetano formation 1 

Jurassic(?)

Vinales limestone * 

Upper Jurassic and Lower Cretaceous

San Andres formation 2

West Indies Continued 

Cuba Continued 

Upper Jurassic

Jagua formation 2

Quemado formation 2 

Upper Jurassic(f)

Gerona marble l 

Pre-Jurassic (?)

Pinar schist l 

Age(?)

Daguilla diorite schist l

Mal Pais gravel'

Santa Fe schist l

Trinidad schists 2 

Curasao, Netherlands West Indies 

Recent

Asiento formation 2

Boca Santo Preto conglomerate

Westpuntbaai conglomerate 3 

Pleistocene

Blaubaai conglomerate 2

Ronde Klip conglomerate 2

Seroe Domi beds 2 

Eocene, upper

Mainsjie formation 2

Seroe di Cueba series 2 

Upper Cretaceous and Paleocene

Midden-Curae.ao beds 2 

Upper Cretaceous

Seroe Teintje limestone * 

Cretaceou$(f)

Knip beds 2

Dominica/'British West Indies 

Pleistocene

Grand Savanna gravel series

Morne Daniel gravel series a

Roseau tuffs 2 

Dominican Republic

Pliocene

Gato formation 1 

Jimanf formation 2 

Las Matas gravels l

Miocene

Nivaje shale 2

Miocene, upper

Caimito formation a 

Cerros de Sal formation * 

Las Salinas formation J 

Via formation 2

Miocene, middle

Arroyo Seco formation 2 

Bulla conglomerate * 

Cercado formation l 

Gurabo formation l 

Mao clay l 

Mao Adentro limestone l

Miocene, lower and middle 

Yaque group J

Miocene, lower

Angostura formation 2 

Arroyo Blanco formation 

Baitoa formation ' 

Cevicos limestone 1
614 GEOLOGIC NAMES OF NORTH AMERICA

West Indies Continued

Dominican Republic Continued 

Miocene, lower Continued

Higuerito member (of Arroyo

Blanco formation) 2 

Oligocene, upper

Bao group 2

Florentine formation '

Lemba formation 2

Quita Coraza formation 2

Tabera formation l

Trinchera formation 2 

Oligocene, middle

Las Colorados conglomerates a 

Oligocene, lower and middle

Sombrerito formation 2 

Eocene

Ocoa formation * 

Eocene, upper

Neiba formation 2 

Eocene, middle

Hidalgos formation 2 

Eocene, lower

Abuillot formation 2 

The Grenadines, British West Indies 

Miocene, lower

Carriacou limestone 2

Grand Bay beds 2 

Guadeloupe, French West Indies 

Pleistocene

Usine limestone 2 

Miocene

Abymes tuffs 2

Gensole tuffs 2

Grande Terre limestone 2 

Age(f)

Lafonde gravel and marl *

Petit Bourg series * 

Haiti 

Pliocene

Hinche formation *

Riviere Gauche formation 2 

Miocene

Morne Delmas formation 2 

Miocene, middle

Las Cahobas formation l

Plaisance limestone *

Port-au-Prince beds 2 

Miocene, lower and middle

Artibonite group * 

Miocene, lower

Madame Joie formation l

Thomonde beds * Maissade tongue (of Thomonde

formation) l 

Oligocene and Miocene

Riviere Grise formation a 

Oligocene, middle

Cr£te formation 2 

Oligocene, lower

Arc formation 2

Bassin Zim formation * 

Eocene, upper

Ennery formation 2

West Indies Continued 

Haiti Continued 

Eocene, middle

Perodin formation (Jaques Butter lin, 1954, Inst. Franc, ais 

d'Haiti Mem. 1, p. 433) 

Paleocene

Marigot formation 2 

Upper Cretaceous

Macaya formation *

Trois-Rivieres formation * 

Jamaica 

Pleistocene

Barbican formation *

Bogue Island formation l

Falmouth formation l

Hopewell formation 1

Kingston formation *

Liguanea formation 2

Montego formation l 

Tertiary

Cobre» (beds)

Moneague l (beds)

Montpelier * (beds) 

Pliocene or Pleistocene

Porus formation 1 

Pliocene

Layton formation 2

Manchioneal formation * 

Miocene and Pliocene

Low Layton pillow lavas a 

Miocene or younger

Hayes conglomerate 2 

Miocene

Bengal limestone 2 

Miocene, upper

August Town series 2

Buff Bay beds »

Round Hill series 2 

Miocene, middle or upper

Hope Gate limestone or series a 

Miocene, middle

Bowden formation l 

Miocene, lower (see also Eocene, 

middle, to Miocene, lower)

May Pen beds *

St. Thomas-in-the-Vale marls 2 

Oligocene, upper, and Miocene, 

lower

Newport limestone member (of 

White Limestone formation) 2 

Oligocene (see also Eocene, middle, 

to Miocene, lower)

Cockpit limestone group * 

Oligocene, upper

Walderston limestone member 

(of White Limestone formation) 2 

Eocene

Ben Bow limestone *

Cambridge formation 1

Catadupa * (formation)

Port Maria conglomerate 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 615

West Indies Continued 

Jamaica Continued 

Eocene, upper

Chapelton formation 1

Somerset limestone member (of 

White Limestone formation) 8 

Eocene, upper (?)

New Castle porphyry * 

Eocene, middle or upper

White Limestone basement 2 

Eocene, middle, to Miocene, lower

White Limestone formation 2 

Eocene, middle

Troy limestone member (of 

White Limestone formation) 2

Yellow Limestone formation 2 

Eocene, lower

Cinchona limestone (in Mt. 

Hybla beds) 2

Good Hope limestone *

Halberstadt limestone *

Halberstadt volcanic group a

Mount Hybla group 2

Richmond formation * Wagwater group 2

Woodford limestone member (of

Wagwater group)* 

Cretaceous

Ballard l (formation)

Frankenfield ' (formation)

Jerusalem l (formation)

Logie Green l (formation)

Minho beds l

Yallahs formation * 

Upper Cretaceous

Barrettia limestone *

Blue Mountain series l

Diozoptyxis shales 2

Inoceramus series 2

Ostrea limestone 2

Providence shales *

Purple Conglomerate group *

Serge Island marble l

Titanosarcolites limestone *

Veniella shale 2 

Pre-late Cretaceous

Arntully serpentine 2 

Pre-Mesozoic

Westphalia schists 2

Port Royal clay shales 2 

Martinique, French West Indies 

Miocene

Vauclin tuffs * 

Miocene, middle

Bassignac tuffs * 

Oligocene

Bourg du Marin limestone 2 

Oligocene, upper

Macabou limestone a

Morne Vent limestone a 

Oligocene, lower

Fond Moustique tuffs *

West Indies Continued 

Puerto Rico 

Quaternary

Cabo Rojo stage l

Desecheo stage l

Isabella stage * 

Recent

Santa Isabel series 1 

Pleistocene

San Juan formation * 

Tertiary

Arecibo formation *

Collazo shale 1

Gu&nica coral reefs 1

Lares shale '

Mayagiiez shales J 

Miocene, upper, or Pliocene, lower

Guanajibo formation 2 (subsurface) 

Miocene

Pepino formation *

Puerto Ferro limestone 1

Quebradillas limestone 1 

Miocene, lower

Aymamon limestone *

Aguadilla limestone a

Aguada formation * 

Oligocene or Miocene

Cibao formation (as limestone *)

Los Puertos limestone 1 

Oligocene

Guajataca member (of Cibao 

marl) 2

Lares limestone 1

Rio Guatemala group 2

San Sebastian formation (as

shale >)

Oligocene, upper, and Miocene, 

lower

Ponce limestone > 

Oligocene, middle

Juana Diaz formation (as shales

and marls l) 

Oligocene, lower

Cafias Arriba formation a 

Eocene

Coamo Springs limestone series J

Rio Descalabrados series 1

Rio Jueyes series * 

Paleocene, upper, or Eocene, lower

Fajardo formation (as shales l)

Figuera formation * 

Cretaceous

Aibonito conglomerate *

Coamo tuff 1

Ensenada shale l

Guayabal limestone * Guayama series l

Guzman formation *

Juan Ascencio member (of Fajardo shale) l

Luquillo formation *

Pefiuelas shale 1
616 GEOLOGIC NAMES OF NORTH AMERICA

West Indies Continued 

Puerto Rica Continued 

Cretaceous Continued

Rio conglomerate *

Rio Blanco series 1

Rio Culebrinas series l

Rio Yauco series 1

San Diego formation *

San German limestone l

Sierra de Cayey tuffs J 

Cretaceous(f)

Aguas Buenas limestone 1

Corozal limestone 1

Juan Asencio chert beds J

Muda limestone l

Unibon shale 1 

Upper Cretaceous

Atalaya limestone 2

Cape San Juan limestone 2

Cialitos limestone 2

Frailes formation (see p. 622.)

Guilarte limestone 8

La Muda limestone 1 member (of 

Frailes formation)

Las Marias limestone 2

Orcovis limestone 2

Trujillo Alto limestone (as Trujillo formation *) 

Upper Cretaceous (?)

GuaynSbo formation 1

Hato Puerco tuffs l 

Lower Cretaceous

Rio de la Plata series 1 

Lower Cretaceous (f)

Barranquitas shaly limestone 1

Comerio beds 1

Coqui limestone l 

Collores limestone l 

Juncor gabbro l 

Patillas quartz monzonite 1 

San Lorenzo quartz diorite 1 

Yabucoa granite *

St. Bartholomew, French West Indies 

Eocene, middle

Caves limestone member (of

Saint Bartholomew formation) 2

Flamand limestone member (of

Saint Bartholomew formation) 2

Lezard limestone member (of

Saint Bartholomew formation; 2

Mongeant limestone member (of

Saint Bartholomew formation) 2

St. Bartholomew limestone 1

St. Eustatius, Netherlands West Indies

Pleistocene, upper(f)

White Wall formation 2 

St. Kitts, British West Indies 

Pleistocene, lower

Brimstone Hill limestone 2 

Brimstone Hill tuffs 2

St. Kitts gravels

West Indies Continued 

St. Martin, French and NetherlandsWest Indies 

Tertiary, lower

Simson Bay formation 2 

Miocene

Low Lands formation 2 

Oligocene, upper

Tintamarre formation 2 

Upper Cretaceous (f)

Pointe Blanche formation 3 

Miocene, upper, and Pliocene

Rockly Bay formation 2 

Cretaceous (?)

Bacolet formation 2

Hawks Bill formation 2

Goldsborough formation * Main Ridge formation 2

Merchiston formation 2

Mount Dillon formation 2

North Coast schist group 3

Parlatuvier formation 2

Tobago volcanic group 2 

Trinidad, British West Indies 

Pleistocene

Godineau beds 2

Melajo clay 2

Oropouche formation 2

Pierreville clay 2

Siparia beds 2 

Pleistocene (f)

Llanos formation * 

Tertiary

Caroni series l

Morne 1'Enfer formation *

Tamana series l

Williamsville clay * 

Pliocene and Pleistocene

Cedros beds 2 

Pliocene

Camparo formation 2

Matura formation 1

Palmiste clays 2 

Miocene and Pliocene

Talparo formation 2 

Miocene

Concord member (of Brasso formation) 2

Cruse oil zone * (subsurface)

Forest clay and sands * (subsurface)

Freemans Bay limestone 2

Guaracara limestone l

Lengua beds s Machapoorie formation l

Montserrat sand member (of 

Upper Brasso formation) 8

Moruga series x Mount Pleasant greensand horizon (of Manzanilla formation) *

Naparima marl 1

Palo Seco formation 2

Pointe Noir beds 2

Poonah sands l

Princes Town marl l

Stollmeyer oil zone |( (stri^sttrface)
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 617

West Indies Continued

Trinidad, British West Indies Con. 

Miocene (?)

Manzanilla formation ' 

Miocene, upper

Erin Point beds (in Moruga formation) 2

Goudron sands (in Moruga formation) 2

La Brea formation 2 

Los Atajos member (of Brasso

formation) 2

Mamural clay (in Springvale formation) 2

Springvale formation 2 

Telemaque sand (in Springvale

formation) 2 

Miocene, middle (see also Oligocene,

middle to Miocene, middle) 

Brasso clay (in Manzanilla formation) 2 

Brasso conglomerate member (of

Manzanilla formation) 2 

Santa Lucia clay 2 

Miocene, lower or middle

Navarro River member (of Brasso formation) 2 

Tunnel Hill member (of Brasso

formation) 2 

Miocene, lower and middle

Biche limestone 2 

Miocene, lower

Brigand Hill limestone 2 

Herrera sandstone 2 

Rio Claro boulder bed 2 

Oligocene and Miocene

St. Croix formation l 

Oligocene

Alley Creek beds 2 

Bontour Point 1 (formation) 

Cacatro member (of Cipero formation) 2

Cipero marl formation 2 

Flat Rock tongue (of San Fernando formation) 2 

Godineau River marls 2 

Kapur limestone 2 

Karamat formation 2 

Mejias limestone 2 

Morne Diablo beds 2 

Paradise member (of Cipero formation) 2

Quinam limestone) 2 

Retrench marls 2 

Tabaquite series 2 

Oligocene(f)

Ben Lommond formation * 

Oligocene, upper

Trinidad Point calcareous clay 2 

Oligocene, middle, to Miocene, middle

Brasso formation 2 

Oligocene, middle to upper 

Esmeralda member (of Brasso 

formation) 2

West Indies Continued

Trinidad, British West Indies Con. 

Eocene

Bon Accord conglomerate 2

Fitt Trace marl 3

Nariva series 1

Soldado Rock formation * 

Eocene(?)

Benitie group 2

Galeota group 2

Lagoon NavSte group 2

Lagoon Palmiste group 2 

Eocene, upper

Boca de Serpiente formation 2

Hospital Hill formation 2

Morne Roche beds 2

Mount Moriah formation 1

Plaisance conglomerate 2 '

San Fernando formation)]1

Soldado formation 2

Ulen Quarry beds 2

Vista Bella member (of Mount.

Moriah group) 2 

Eocene, middle

Pelican Rock marls 2 

Eocene, lower or middle

Friendship Quarry marl (in 

Navet formation) 2

Mount Harris beds (in Pointe-aPierre formation) 2

Penitence Hill marl (in Navet 

formation) 2

Pierre Point beds (in Pointe-aPierre formation) 2 

Eocene, lower and middle

Nariva River marl 2

Navet formation 2

Pefial Quarry horizon (in PaloSeco formation) 2 

Eocene, lower

Dunmore Hill marl member (of 

Navet formation) 2

Ramdat marl (in Navet formation) 2

Serpent formation 2 

Paleocene

Chaudiere formation 2

Cunapo River argiline 2

Ganteaume conglomerate 2

Maroc formation *

St. Joseph boulder bed 2

Soldado formation 2

Tarouba shale l 

Paleocene, lower

Lizard Springs formation 2 

Cretaceous or Tertiary

Parian group * 

Cretaceous

La Carriere shale*

Point a Pierre grits * 

Upper Cretaceous

Bontour formation 2

Chert Hill formation *

Cunapo-Southern horizon (ia 

Turure formation) 2
618 GEOLOGIC NAMES OF NORTH AMERICA

West Indies Continued 

Trinidad, British West Indies Con. 

Upper Cretaceous Continued 

Gautier formation 2 

Guayaguayare beds 2 (subsurface)

Hobsons clay 2 

Lantern marl (in Chaudiere

shale) 2

Naparima Hill formation 2 

Railway Cut marl (in Chaudiere

shale) 2

San Fernando argiline 2 

Stack Rock limestone 2 

Toco Bay beds 2 

Turure formation * 

Lower Cretaceous

Bon Accord formation a

Cuche formation 2

Cuche River beds 2

Cumana formation 2

Galera formation 2

Galera Grit member (of Galera

formation) 2

Grande Riviere formation 2 

Grande Riviere Road limestone 2 

Maridale formation 2 

Plum Road formation 2 

San Souci volcanic formation 2 

Toco formation 2 

Zagaya limestone member (of

Toco formation) 2 

Lower Cretaceous(f)

Caribbean group l 

Pre-Cretaceous(f)

Laventille limestone l 

Jurassic

Cuare limestone 2

Maracas beds 2

Maraval beds 2

Picton limestone member (of

Laventille formation) 2 

Rio Seco formation 2 

Upper Jurassic 

Hollis Reservoir formation 2 

Quare1 limestone (in Hollis Reservoir formation) 2 

Jurassic or older

Dragon formation (type locality

in Venezuela) 2 

Virgin Islands

Oligocene and Miocene

Eingshill marl 2 

Oligocene

Jealousy formation 2 

Upper Cretaceous 

Mount Eagle volcanics (as

series !) 

Pacific Islands

Detailed information on the geologic 

formations of all of the smaller 

islands in the Mid-Pacific area can 

be found in the Lexique Stratigraphique International, v. 1, Oceanic 

fascicule 2, Oceanie Proprement 

Dite.

Pacific Islands Continued 

Caroline Islands (Angaur) 

Pleistocene and Recent

Angaur (Older and Younger)

limestone 2

Caroline Islands (Babelthaup) 

Pleistocene

Palau limestone 8 

Pliocene

Airai lignite bearing beds 2 

Oligocene

Arumonogui (Almongui) agglomerate 2 

Eocene

Aimiriiki (Aimiliiki) agglomerate 2

Babelthaup agglomerate 2 

Kameset (Gamusetsu) agglomerate 2

Ngardok (Galdog) beds * 

Caroline Islands (Eastern) 

Miocene

East Caroline beds 2 

Caroline Islands (Fais) 

Pleistocene

Caroline limestone 2 

Fais limestone 2 

Caroline Islands (Garim, island off

Yap) 

Pleistocene

Garim limestone 2 

Caroline Islands (Kusaie) 

Pliocene

lisa beds 2 

Miocene

Malam (Maremu) beds 2 

Caroline Islands (Map) 

Miocene

Map formation 2 

Caroline Islands (Peleliu) 

Recent

Ngarekeukl (Galkyoku) limestone 2 

Pleistocene

Peleliu limestone 2 

Caroline Islands (Ponape) 

Miocene

Metalanim (Matalanim) beds 2 

Caroline Islands (Truk) 

Miocene

Getuyoto beds 2 

Caroline Islands (Yap) 

Oligocene

Tomil agglomerate 2 

Pre-Tertiary(t)

Yap formation 2 

Hawaii (Island of Hawaii)

Quaternary (see also Tertiary, upper,

to Quaternary) 

Glenwood tuff 2 

Kapukapu tuff 2 

Olaa agglomerate 2 

Waiau formation 2 

Waimea formation 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 619

Pacific Islands Continued 

Hawaii (Island of Hawaii) Con. 

Recent

Huehue flow 2

Keanakakoi formation 2 

Recent and Pleistocene, upper(?)

Eamehame basalt 1

Eau volcanic series 2

Kona tuff formation 2

Puna volcanic series 2 

Pleistocene or Recent

Uwekahuna ash 2 

Pleistocene and Recent

Hualalai volcanic series 2

Honolulu volcanic series 1 

Pleistocene and Recent(f)

Laupahoehoe volcanic series 2 

Pleistocene

Hawi volcanic series 2

Eahuku volcanic series 2 N

Makanaka drift and stage 2

Pahala ash (as basalt ')

Pohakuloa drift and stage 2

Waihu fanglomerate 2 

Pleistocene(f)

Hilina volcanic series 2

Waawaa volcanics 2 

Tertiary, upper, to Quaternary

Hamakua volcanic series 2 

Pliocene(f)

Ninole volcanic series (as 

basalt 1 )

Pololu volcanic series 2 

Hawaii (Island of Kahoolawe) 

Pliocene(f)

Eanapou volcanic series 2 

Hawaii (Island of Kauai) 

Pleistocene and Recent

Eoloa volcanic series 2 

Pleistocene

Palikea formation 2 

Pliocene(f)

Haupu formation 2

Makaweli formation 2

Mokuone member (of Makaweli 

formation) 2

Napali formation 2

Olokele formation 2

Waimea Canyon volcanic series 2

Kauai lavas 2

Waimea conglomerate 2 

Hawaii (Island of Lanai) 

Pliocene and Pleistocene (?)

Lanai volcanic series (as basalt1 ) 

Age(f)

Manele basalt l 

Hawaii (Island of Maui) 

Pleistocene or Recent(f)

Lahaina volcanic series 2

Laina volcanics 2 

Pleistocene and Recent

Hana volcanic series 2 

Pleistocene

Eaupo mud flow 2

Pacific Islands Continued 

Hawaii (Island of Maui) Continued 

Pleistocene(?)

Big Falls picritic basalt *

Hanawi basaltic andesite 2

Eapaula basaltic andesite 2

Eeanae basalt 2

Eilea volcanics 2

Eipahula formation 2

Kuhiwa basaltic andesite 2

Makaino basaltic andesite * Makapipi basalt 2

Mossman picritic basalt 3

Ohia basalt 2

Paakea basalt 2

Pauwalu basalt 2

Piinaau basalt 2

Waiaaka basaltic andesite * Wailuanui basalt 2

Waiokamilo basalt 2 

Pleistocene, lower, or Pliocene, 'upper(?)

Honolua volcanic series * 

Pliocene(?)

Wailuku volcanic series * 

Tertiary, upper (?)

Honomanu volcanic series *

Eula volcanic series 2 

Hawaii (Island of Molokai) 

Pleistocene(f)

Ealaupapa basalt 2 

Pliocene

West Molokai volcanic series * 

Pliocene(f)

East Molokai volcanic series * 

Hawaii (Island of Niihau) 

Pleistocene

Eiekie volcanic series 2 

Pliocene (?)

Paniau volcanic series' 2 

Hawaii (Island of Oahu) 

Quaternary

Aliamanu basalt 2 (subsurface)

Kaau mud flow 2

Kii Point limestone 2

Pyramid Rock basalt.* 

Recent

Black Point ash 2

Diamond Head talus breccia 1

Ealama volcanics 1 

Pleistocene (?)

Eolekole volcanics 2 

Pleistocene, upper, or Recent

Eaupo basalt 1

Eoko volcanics/

Manana tuff 1

Sugar Loaf basalt l

Tantalus basalt 1 

Pleistocene, upper, and Recent

Eaohikaipu volcanics * 

Pleistocene, upper

Ainoni volcanics 1

Aliamanu tuff»
620 GEOLOGIC NAMES OF NORTH AMERICA

Pacific Islands Continued

Hawaii (Island of Oahu) Continued 

Pleistocene, upper Continued

Black Point basalt»

Castle volcanics 1

Diamond Head tuff l

Fort Shafter gravel l

Haiku volcanics >

Hawaiiloa volcanics l

Eaau volcanics l

Eaimuki volcanics l

Kalihi volcanics l

Eamanaiki basalt l

Kaneohe volcanics 1

Kupikipikio basalt l or black 

ash 1

Makalapa tuff l

Makawao breccia l

Maunawili volcanics '

Mauumae volcanics * Mokapu basalt l

Mokolea basalt (as Mokulea 

basalt»)

Moku Mann volcanics 1

Nuuanu volcanics l

Pali volcanics l

Punchbowl volcanics l

Rocky Hill volcanics l

Salt Lake tuff»

Training School volcanics l

Ulupau tuff 1 

Pliocene

Pearl Harbor series l

Pearl River series 1 

Pliocene (?)

Eailu volcanic series 1

Koolau volcanic series 1

Waianae volcanic series * 

Age(?)

Black Point limestone 8 

Mariana Islands (Aguijan) 

Pliocene

Aguijan limestone 2 

Mariana Islands (Farallon de MediniUa) 

Oligocene (Aquitanian)

Medinilla (Lower and Upper)

limestone 2

Mariana Islands (Guam) 

Recent

Merizo limestone 2 

Pleistocene

Barrigada limestone 8 

Pliocene

Sumay limestone 2

Talofofo peat-bearing beds 2 

Oligocene (Aquitanian)

Asan limestone 2 

Eocene

Balanos andesite 2

Fena beds 2

Nagas beds 2

Santa Rosa beds 2

Umatac andesite *

Pacific Islands Continued 

Mariana Islands (Pagan) 

Recent

Pagan limestone 2 

Mariana Islands (Rota) 

Recent

Mirikattan limestone a 

Pleistocene

Rota limestone 2 

Pliocene(f)

Poniya limestone 2 

Miocene, lower

Hirippo limestone 2 

Oligocene (Aquitanian)

Taihamu (Taihanom) limestone * 

Eocene

Manila agglomerate 2

Mariiru beds 2 

Mariana Islands (Saipan) 

Pleistocene or Recent

Tanapag limestone 2 

Pleistocene

Chacha limestone 2 

Pliocene and Pleistocene

Naftan limestone 2 

Miocene, lower

Donni sandstone member (of 

Tagpochau limestone) 2

Laulau limestone 2

Machegit conglomerate member 

(of Tagpochau limestone) *

Tagpochau limestone * 

Eocene

As Perdido (Asuberudedo) beds * 

Eocene(?)

Sankakuyama formation 2 

Eocene, upper

Densinyama formation 8

Hagman formation 8

Matansa limestone 2 

Mariana Islands (Tinian) 

Recent

Dankuro limestone 2 

Pleistocene

Mariana limestone 2

Sonson limestone 2 

Pliocene or Pleistocene

Carolinas limestone 2 

Oligocene (Aquitanian)

Kasutesyo limestone 2

Lasso limestone 2

Tinian beds 2 

Eocene

Marino agglomerate 2

Marino beds 2 

Samoa Islands 

Recent

Aunuu tuff 2 

Recent(f)

Leone volcanics 2 

Pliocene(f)

Alofau volcanics 8

Masefau volcanics 2

Olomoana volcanics 2
INDEX TO THE GEOLOGIC NAMES OF NORTH AMERICA 621

Pacific Islands Continued 

Samoa Islands Continued

Pliocene(f) Continued 

Taputapu volcanics 2

Pliocene and Pleistocene(?) 

Pago volcanic series 2

Pliocene or Pleistocene, lower 

Afono trachyte 2 

Matafao breccia 2 

Matafao trachyte 2 

Papatele trachyte 2

Pacific Islands Continued 

Samoa Islands Continued

Pliocene or Pleistocene, lower Con.

Pioa breccia 2

Pioa rhyolite 2

Vatia trachyte 2 

Pliocene and lower Pleistocene(?)

Fagasa gabbro 2

Lefulufulua trachyte 2

Leila trachyte 2

Tau trachyte 2

ADDITIONS AND CORRECTIONS TO "ROCK UNITS"

Additions:

The following new units are being used by the U.S. Geological 

Survey as formations containing earlier named units as 

members: 

Frailes formation (C. A. Kaye, 1959, U.S. Geol. Survey

Prof. Paper 317-A, p. 16), Upper Cretaceous of Puerto

Rico (p. 616) 

Houy formation (P. E. Cloud, V. E. Barnes, and W. H.

Hass, 1957, Geol. Soc. America Bull., v. 68, no. 7, p.

810-816), Devonian and Lower Mississippian of Texas

(p. 554) 

Owens Valley formation (C. W. Merriam and W. E. Hall,

1957, U.S. Geol. Survey Bull. 1061-A, p. 7-12), Permian

of California (p. 450)

Recent additions to and revisions of Survey usage made too 

late to be included in the text: 

Genesee formation (as group ), Upper Devonian of New

York (p. 512), containing the following members:

Geneseo shale > member (p. 512)

Genundewa limestone member (as lentil of Geneseo 

shale >) (p. 512)

Ithaca member (as shale member of Portage formation l) 

(p. 512)

Penn Yan shale member (as Tongue of West River 

shale 2) (p. 512)

Renwick shale member l (p. 512)

Sherburne flagstone member (as member of Portage 

formation !) (p. 512)

West River shale 1 member (p. 512) 

Keyser limestone (as member of Helderberg limestone 1 ),

Upper Silurian and Lower Devonian (?) of West Virginia

(p. 571) 

McElroy formation (as member of Fayette sandstone 1),

upper Eocene of Texas (p. 546), containing the following

members:

Dilworth sandstone member (as sand') (p. 545)

Manning clay member (as beds *) (p. 545) 

Shublik formation,1 Middle and Upper Triassic of Alaska

(p. 433) 

Wells formation,1 Pennsylvanian and Permian of Idaho

(p. 460)
622 GEOLOGIC NAMES OF NORTH AMERICA

Additions:

Whitsett formation (as beds 1), upper Eocene of Texas 

(p. 546), containing the following members: 

Calliham sandstone member (as sand') (p. 545) 

Dubose member (as sands and clays >) (p. 546) 

Fashing clay member (as clay !) (p.546) 

Stones Switch sandstone member (as sand') (p. 546)

Corrections:

fSharon coal group, 1 Lower Pennsylvanian of Maryland,

omitted from text 

Sugarloaf quartz latite (p. 435), Cretaceous or Tertiary of

Arizona (James Gilluly, 1956, U.S. Geol. Survey Prof.

Paper 281, p. 90-93), erroneously entered in part A (p.

354) with reference belonging to Sugarloaf series (see

below) 

Sugarloaf series, Cenozoic of Arizona (H. E. Enlows, 1951,

Tulsa Geol. Soc. Digest, v. 19, p. 105-107) 

The names listed below are cited under erroneous localities in 

the text: 

Bromley shale (in Cynthiana formation),1 Middle Ordovician of Kentucky (p. 522)

Floyd shale, 1 Upper Mississippian of Georgia (p. 430) 

Drywood formation or coal group,1 Pennsylvanian (Des

Moines) of Missouri (p. 526)
Geologic Names of 

North America

By DRUID WILSON and others

GEOLOGICAL SURVEY BULLETIN 1056

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON * 1959
UNITED STATES DEPARTMENT OF THE INTERIOR 

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan. Director

The D.S. Geological Survey Library has cataloged this publication as follows:

Wilson, Druid, 1906-

Geologic names of North America, by Druid Wilson and 

others. Washington, U. S. Govt. Print. Off., 1959.

iv, 621 p. table. 25 cm. (U.S. Geological Survey. Bulletin 1056 > 

Bibliography: p. 410-412.

CONTENTS. A. Geologic names of North America introduced in 

1936-1955, by D. Wilson, W. J. Sando, and B. W. Kopf. B. Index to 

the geologic names of North America, by D. Wilson, G. C. Keroher, 

and B. E. Hansen.

1. Geology Nomenclature. 2. Geology North America, 

i. Title. (Series)

[QE75.B9 no. 1056] GS 59-232
CONTENTS

Page

(A) Geologic names of North America introduced in 1936-1955, by Druid

Wilson, William J. Sando, and Rudolph W. Kopf___________ 1

(B) Index to the geologic names of North America, by Druid Wilson,

Grace C. Keroher, and Blanche E. Hansen________ 407

in