DEPARTMENT OF THE INTERIOR
UNITED STATES GEOLOGICAL SURVEY

PREPARED BY THE

290! —
85°0! 154°

Base from U.S. Geological Survey, 1965

NORTH

154*00" 165°00
34°00" 84° 00)

5° 00! 85° 00"
85° 4=00) 165-00"

SOUTH

Compiled from U.S.N.O.0. Chart 1706 S, 1960

INSTITUTE OF POLAR STUDIES, OHIO STATE UNIVERSITY
UNDER THE AUSPICES OF THE

NATIONAL

SCIENCE FOUNDATION

Gonendwos

CONTOUR INTERVAL 200 METERS—DATUM IS MEAN SEA LEVEL

Barrett, P. J. 1969, Stratigraphy and petrology of the

mainly fluviatile Permian and Triassic Beacon rocks,
Beardmore Glacier area, Antarctica.

Univ., Inst. Polar Studies Rept. 34, 132 p.

REFERENCES

________in press, Major oxide chemistry of the Kirk-
patrick Basalt, central Transantarctic Mountains, in
Ohio State

Adie, R. J., editor, Antarctic geology and geophysics:

Oslo, Universitetsforlaget.
1970, Paleocurrent analysis of the mainly

fluviatile Permian and Triassic Beacon rocks, Beard-

Elliot, D. H., Colbert. E. H., Breed, W. J., Jensen, J. A.,
and Powell, J. S., 1970, Triassic tetrapods from Ant-
more Glacier area, Antarctica: Jour. Sed. Petrology,
v.40, no. 1, p. 395-411.

arctica: Evidence for continental drift: Science, v.

169, no. 3951, p. 1197-1201.
in press, Stratigraphy and petrology of the

mainly fluviatile Permian and Triassic part of the
Beacon Supergroup, Beardmore Glacier area, in Adie,

Elliot, D. H.. Collinson, J. W., and Powell, J.S., in press,
R.J., editor, Antarctic geology and geophysics: Oslo,

Stratigraphy of Triassic tetrapod-bearing beds of
Antarctica, in Adie, R. J., editor, Antarctic geology
and geophysics: Oslo, Universitetsforlaget.

Elliot, D. H., and Tasch, P., 1967, Lioestheriid conchos-
tracans: A new Jurassic locality and regional and
Gondwana correlations. Jour. Paleontology, v. 41,

Universitetsforlaget.

Barrett, P. J., and Elliot, D. H., in press, The early
Mesozoic voleaniclastic Prebble Formation, Beard-
more Glacier area, in Adie, R. J., editor, Antarctic no. 6, p. 1561-1563.
geology and geophysics: Oslo, Universitetsforlaget.

\
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| LL 7
i - - _ 158° 160°
- 156°
SCALE 1:250 000
5 ° 5 10 45 20 Statute Miles
Geology mapped in 1966-67 by Peter J. Barrett,
5 o 5 10 15 20 25 30 Kilometers
a
5 ° 5 10 15 Nautical Miles
(
Polar Stereographic Projection —Standard Parallel 84°14"

David H. Elliot, John F. Lindsay, and D. Kenyon King;
geology mapped in 1969-70 by David H. Elliot,

Donald A. Coates, James W. Collinson, William J. Gealy, and
John H. Mercer assisted by Henry H. Brecher, John Gunner,

John Pavlik, Donald N. Peterson, Jon S. Powell, Izak C. Rust,
and John F. Splettstoesser

Hill, R. L,

1969, Strontium isotope composition of
basaltie rocks of the Transantarctic Mountains,

Antarctica: Columbus, Ohio, Ohio State Univ., un-
pub. M. Se. thesis, 87 p.

Mercer, J. H., in press. Some observations on the glacial

Ferrar Group

U.S. ANTARCTIC RESEARCH PROGRAM
BUCKLEY ISLAND QUADRANGLE
ANTARCTIC GEOLOGIC MAP A-3

Ny
Qs &
Ea
oi
Scree B
In places may include solifluction deposits, weathered bedrock, till, ]
or other surficial deposits Ss
~
QT

Glacial drift
Includes glacial drift on bedrock, stranded ice-cored glacial drift, and glacial drift on

‘moving ice. In isolated outcrops and on elevated flat surfaces may include weathered
bedrock

Sirius Formation
Gray to light-brown compact till, varying from friable to semi-lithified with sandy,

waterlaid lenses and bands up to 3m thick. In places, rests on a striated pavement.
Boulder-size clasts are of dolerite
thick

TERTIARY (?) AND QUATERNARY

Present only on Mt. Sirius where it is 100 TM |

[* ]

Kirkpatrick Basalt

Tholeiitic flows and ponded lavas from 1.5 to about 170m thick. Many thicker lavas
have zones of medium-grained diabase.

Amygdules of quartz, chalcedony, calcite,
and zeolites, principally heulandite and stilbite, in basal and upper contact zones of
lavas. Locally upper surfaces of lavas have weathering profiles.
sclose tree stumps and wood fragments.

A few lavas en-
Sparse, thin, acidic tuff beds and lacustrine
deposits with holostean fish, conchostracans, ostracodes and plant remains. Thick-

geology of the Beardmore Glacier area, in Adie, R. J.,

editor, Antaretic geology and geophysics: Oslo,

Universitetsforlaget.

Schaeffer, B., 1972, A Jurassic fish from Antaretica
‘Am. Mus. Novitates, no. 2495, p. 1-17

Schopf, J. M., 1970, Gondwana paleobotany: Antarctic
Jour. U.S,, v. 5, no. 3, p. 62-66.

Colbert, E. H., in press, Triassic tetrapods from Ant-

arctica, in Adie, R.J., editor, Antarctic geology and

geophysics: Oslo, Universitetsforlaget.
ISOGONIC LINE DIAGRAM

Elliot, D. H., 1970, Jurassic tholeiites of the central
Transantarctic Mountains, Antarctica, in Gilmour,
E. H., and Stradling, D., editors. Proceedings of the

Faure, G., Hill, R. L., Jones, L. M., and Elliott, D. H..in
press, Isotope composition of strontium and silica
content of Mesozoic basalt and dolerite from Ant-

aretica, in Adie, R. J., editor, Antaretie geology and
geophysics: Oslo, Universitetsforlaget.

Second Columbia River Basalt Symposium: Cheney,

Grindley, G. W., 1963, The geology of The Queen
Wash., Eastern Washington State College Press, p.
301-325.

Alexandra Range, Beardmore Glacier, Ross De-
pendency, Antarctica; with notes on the correlation

of Gondwana sequences. New Zealand Jour. Geology
and Geophysics. v. 6, no. 3, p. 307-347.

BUCKLEY me
SPARE | cloubtacen \
- - AS
1970, Petrified peat from a Permian coal bed |
in Antarctica: Science. v. 169, no. 3942, p. 274-277. | |
| PLUNKET |
Tasch, P., 1970, Paleolimnology of some Antarctic non- | wet
marine deposits: Antarctica Jour. U.S., v.5, no. 4, p. |
85-86. 0 ee
Umstead, J. E., 1971, Age and paleomagnetic orientation SOUTH
of diabase intrusions, Coalsack Bluff, Antarctica:
Columbus; Ohio, Ohio State Univ. unpub. Senior
thesis, 25 p.
Young, D.J.,and Ryburn, R. J., 1968, The geology of

Buckley and Darwin Nunataks, Beardmore Glacier,
Ross Dependency, Antarctica, New Zealand Jour.

Sheet numbering system based on
International Map of the World

INDEX TO ADJOINING SHEETS
Geology and Geophysics, v. 11, no. 4, p. 922-939.

Q U EE
meters
4000

Blizzard Peak
3000
2000

1000

SEA LEVEL

E xX AN DRA

R AN GE

Blizzard Elliot Peak
Heights

BERWICK GL

Mt Falla

METERS
4000

SEA LEVEL

3000
Lamping Peak
PREBBLE GL
2000
1000
Qs map unit not shown on section
(ERIE EASE ET INTERIOR—GEOLOGICAL SURVEY, RESTON, VIRGINIA—1974—G72094

By

Peter J. Barrett and David H. Elliot

1973

ness 500+ m. K/Ar ages from Storm Peak of 179-7, 170+7, and 163+ 10 my.

Ferrar Dolerite
Tholeiitic diabase sills intruded into Permian and Triassic strata; rare dikes,

4.0my. Flat areas of diabase may include weathered bedrock

Prebble Formation
Light-brown, greenish-brown or reddish-brown massive poorly-sorted lahar debris,
pyroclastic breccia, tuff and minor tuffaceous sandstone, all containing acidic vol-
canic debris and zeolite. Sparse tuff beds with accretionary lapilli.

Lahar debris
locally contains boulders as much as 80 cm across of diabase, basalt, sandstone, silt-
stone, and tuff. Volcanic neck composed of acidic breccia east of Kenyon Peaks.
Thickness 3-148 m

Fe

Falla Formation

Cyclic light reddish-brown bluff-forming sandstone and shale in lower part; partly
zeolitized rhyolitic tuff dominates upper part. Sandstones low in formation are
quartzose and contain white quartz pebbles; volcanic fragments common in sand-
stone higher in formation. Shale in Mount Falla area carbonaceous and contains
Dicroidium. Tuff near top of formation includes black-rimmed accretionary lapilli
up to 1 em across.

Rb/Sr isochron on tuffs of upper part gives age of 203-12 my.
Thickness 180-530 m

Fremouw Formation
Upper part mainly light greenish-gray laumontized volcanic sandstone with some
carbonaceous shale. Stems (Neocalamites?), roots and logs common. A little coal,

Beacon Supergroup
Victoria Group

Dicroidium. Silicified ‘peat at Fremouw Peak. About 300m thick.

Middle part greenish-gray mudstone with thin beds of light gray volcanic sandstone.
A few stems and roots. About 200 m thick.

Lower part cyclic light reddish-brown quartzose sandstone and greenish-gray mud-
stone. At Coalsack Bluff sandstones

have yielded remains of Lystrosaurus,
thecodont and therapsid reptiles, labyrinthodont amphibians. About 100 m thick_)

Pb

Buckley Formation
Cyclic light-colored sandstone, carbonaceous shale, and high-rank high-ash coal.

Lower contact is normally marked by the appearance of white, rounded quartz peb-
bles or by a coarsening of the sandstone or both. Quartz pebbles occur at higher
levels also.

Sandstone is subarkosic to arkosic low in formation but voleanic frag-
ments become abundant 100-300 m above base; volcanic sandstone dominates upper

part. Logs, stems, and Glossopteris leaves common; silicified peat, equivalent to
coal balls, southeast of Mount Augusta. Crossbedding, erosion surfaces, and shale
fragments normally present in and near the base of sandstone units.

laumontization in the voleanic sandstone. Thickness about 750m

Fairchild Formation

Light-colored massive subarkosic to arkosic sandstone with well-developed crossbedding
and parting lineation. Some plant fragments and dark shale stringers.
about 220m

Extensive

PERMIAN

— —

Thickness

Meas-
ured sills as thick as 150 m; thicker sills observed. May include large rafts of sed-
imentary strata. K/Ar ages from Coalsack Bluff of 178+4.5, 178+ 3.0, and 167.5

TRIASSIC — JURASSIC

TRIASSIC

JURASSIC

J

SYMBOLS

Contact

Fault
U, upthrown side; D, downthrown side, Dashed where approximately located; dotted
where concealed

Monocline

20
u®

Strike and dip of beds

500
Structure contour, approximately located
Drawn on base of Beacon Supergroup; base not exposed in quadrangle. Datum is

‘mean sea level. Contour interval 500 meters

==

Base of measured stratigraphic section

RECONNAISSANCE GEOLOGIC MAP OF THE BUCKLEY ISLAND QUADRANGLE, TRANSANTARCTIC MOUNTAINS, ANTARCTICA

For sale by U.S. Geological Survey, price $1.00