DEPARTMENT OF THE INTERIOR
UNITED STATES GEOLOGICAL SURVEY

150°00'
77°00 =

8°00"
’ 150°00'

Base from U.S. Geological Survey, 1972

NORTH

150°00" 141°00"
SOUTH

Compiled from U.S.N.0.0. Chart 1706 S, 1965
ISOGONIC LINE DIAGRAM

McKinley Peak

PREPARED BY THE
ANTARCTIC RESEARCH CENTER, THE MUSEUM

TEXAS TECH UNIVERSITY
UNDER THE AUSPICES OF THE

145°

NATIONAL SCIENCE FOUNDATION

SCALE 1:250,000

5 0 5 10 15 20 Statute Miles
5 0 5 10 15 20 B 30 Kilometers
—_———

0 i 10 15 Nautical Miles

Boudette, E. L., Marvin, R. F., and Hedge, C. E.,
1966, Biotite, potassium-feldspar, and whole-
rock ages of adamellite, Clark Mountains, West
Antarctica, U.S. Geol. Survey Prof. Paper 550-
D, p. D190-D194.

Doumani, G. A., and Ehlers, E. G., 1962, Petro-
graphy of rocks from mountains in Marie Byrd
Land, West Antarctica: Geol. Soc. America Bull.,
v. 73, no. 7, p. 877-882.

Iltchenko, L. N., 1972, Late Precambrian achri-
tarchs of Antarctica, in Adie, R. J., ed., Antarctic
geology and geophysics; Oslo, Universitetsfor-
laget, p. 599-602.

Hershey Ridge

VERTICAL EXAGGERATION X 5

Lambert Conformal Conic Projection—Standard Parallels 76%40’ and 79°20"
CONTOUR INTERVAL 200 METERS—DATUM IS MEAN SEA LEVEL
Elevations and depths in meters

R E F E R EN C E §S

Klimov, L. V., 1968, Some results of geological in-
vestigations in Marie Byrd Land in 1966-67:
Soviet Antarctic Exped. Inf. Bull., v. 6, no. 6,
p. 555-559.

Lopatin, B. G., and Orlenko, E. M., 1972, Outline of
the geology of Marie Byrd Land and the Eights
Coast, in Adie, R. J., ed., Antarctic geology and
geophysics: Oslo, Universitetsforlaget, p. 245-
250.

Passel, C. F., 1945, Sedimentary rocks of the south-
ern Edsel Ford Ranges, Marie Byrd Land, Ant-
arctica: Am. Philos. Soc. Proc., v. 89, no. 1,
p. 123-131.

Haines Mts

Stewart, Duncan, Jr., 1934, A contribution to Ant-
arctic petrography: Jour. Geology, v. 42, no. 5,
p. 546-550.

1941, Notes on some Marie Byrd Land

rocks: Am. Mineralogist, v. 26, no. 1, p. 42-49.

1945, The petrography of some intru-
sive rocks from King Edward VII and Marie Byrd
Lands, Antarctica: Am. Philos. Soc. Proc., v. 89,
no. 1, p. 148-151.

Wade, F. A., 1937, Petrologic and structural re-
lations of the Edsel Ford Range, Marie Byrd Land,
to other Antarctic mountains: Geol.
Soc. AmericaBull., v.48, no. 10, p. 1387-1396.

METERS METERS
1500 1500

RECONNAISSANCE GEOLOGIC MAP OF THE BOYD GLACIER QUADRANGLE,
By

F. Alton Wade, Carl A. Cathey, and Jerry B. Oldham
197

1000 1000

500 500

SEA LEVEL SEA LEVEL

Wade, F. A., and Wilbanks, J. R., 1972, Geology of
Marie Byrd and Ellsworth Lands, in Adie, R. J.,
ed., Antarctic geology and geophysics; Oslo, Uni-
versitetsforlaget, p. 207-214.

Wamer, L. A., 1945, Structure and petrography of
the southern Edsel Ford Ranges, Antarctica:
Am. Philos. Soc. Proc., v. 89, no. 1, p. 78-
122.

Mt. West Mt. Douglass

SWOPE GLACIER

HAMMOND GLACIER

‘Sarnoff Mts
BOYD GLACIER

METERS
1500

1000
Swanson Mts,

500
ARTHUR GLACIER

VERTICAL EXAGGERATION X 5

MARIE BYRD LAND, ANTARCTICA

SEA LEVEL
INTERIOR—GEOLOGICAL SURVEY.RESTON, VIRGINIA—1977—G76335

78°00
141°00"

Geology mapped in 1911 by K. Prestrud; in 1940 by
F. A. Wade; in 1966-1967 by F. A. Wade, V. L. Yeats,
and L. V. Klimov

NORTH
15600" 152° 144° 138*00'
76°00" F 76*00"
~_alesT<i, | cutenxo
NUNATAKS
Srenes
7 -.- 77
e ‘ wl
ALEXANDI IER
MOUNTAI Srevever
ee
7
7e"15'
sts-8/10 | st
ST 5-8/9 s-8/11
79°00" 7 = 79"
156°00" 0 oa 138*00"
SOUTH

‘Sheet numbering system based on
International Map of the World

INDEX TO ADJOINING SHEETS

141°00"

Qim

-_

U.S. ANTARCTIC RESEARCH PROGRAM

BOYD GLACIER QUADRANGLE
ANTARCTIC GEOLOGIC MAP A-6

CORRELATION OF MAP UNITS

QUATERNARY
QTm AND TERTIARY

Unconformity
[oe] } CRETACEOUS
Unconformity

MISSISSIPPIAN

AND DEVONIAN
Unconformity

LOWER PALEOZOIC

AND PRECAMBRIAN

DESCRIPTION OF MAP UNITS

MORAINE

BYRD COAST GRANITE—Biotite granite, leucogranite, and alaskite, equigranular to
porphyritic, marginal and local foliation, magmatic origin. Includes associated
pegmatites and aplites, and mafic dikes. Intrudes Swanson metasedimentary rocks
and Ford Granodiorite. Radiometric ages mainly 10010 m.y.; age of about 140
my. on adamellite (quartz monzonite) at Mt. Atwood, Clark Mountains

FORD GRANODIORITE—Biotite-homblende granodiorite, Probably two
generations of plagioclase; oligoclase-andesine and younger albite. Includes
associated pegmatite, aplite, and rhyolite dikes; and mafic dikes. _Intrudes Swanson
metasedimentary rocks, Radiometric ages mainly 345+11m.y. Name from Ford
Ranges

SWANSON FORMATION—Sequence of metamorphosed sedimentary rocks with
total thickness estimated to be in excess of 4000 m. Degree of metamorphism
seldom exceeds greenschist facies. Metagraywacke dominates sequence with lesser
amounts of quartzite, biotite schist, phyllite, and slate. Upper Precambrian-lower
Paleozoic age based upon achritarch assemblages (IItchenko, 1972). Name from
Swanson Mountains

Contact

Axis of syncline

Parallel folds, showing plunge
Strike and dip of beds

Vertical beds
Strike and dip of foliation

Vertical foliation

Base of measured stratigraphic section

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