Reconnaissance Geologic Map of the Guest Peninsula Quadrangle, Marie Byrd Land, Antarctica

DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY

RECONNAISSANCE GEOLOGIC MAP OF THE GUEST PENINSULA QUADRANGLE, MARIE BYRD LAND, ANTARCTICA

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

Prepared by the ANTARCTIC RESEARCH CENTER, THE MUSEUM TEXAS TECH UNIVERSITY under the auspices of the NATIONAL SCIENCE FOUNDATION

U.S. ANTARCTIC RESEARCH PROGRAM MAP Published by the U.S. Geological Survey, 1977 G GEOLOGIC MAP SYMBOLS COMMONLY USED ON MAPS OF THE UNITED STATES GEOLOGICAL SURVEY (Special symbols are shown in· explanation)

------Contact - Dashed where approximately Strike and dip of beds - Ball indicates located; short dashed where inferred; top of beds known from sedimen dotted where concealed tary structures _!3 Inclined ffi Horizontal Contact- Showing dip; well exposed at -+- Vertical ~ Overturned triangle Strike and dip of foliation ------···· Fault - Dashed where approximately located; short dashed where inferred; --.33 Inclined -t-- Vertical + Horizontal dotted where concealed Strike and dip of cleavage 20 Fault, showing dip - Ball and bar on ~ Inclined ,___, Vertical + Horizontal downthrown side Bearing and plunge of lineation Normal fault - Hachured on down thrown ts.__ Inclined Vertical - Horizontal side Strike and dip of joints Fault - Showing relative horizontal ~o Inclined - Vertical + Horizontal movement Note: planar symbols (strike and dip of beds, Thrust fault - Sawteeth on upper plate· foliation or schistosity, and cleavage) may be combined with linear symbols to record data observed at same locality hy superimposed Anticline - Showing direction of plunge; ...41---~------· symbols at point of observation. Coexisting dashed where approximately located; planar symbols are shown intersecting at point dotted where concealed of observation.

Asymmetric anticline - Short arrow indicates steeper limb Shafts Overturned anticline - Showing direction of dip of limbs ~ Vertical t;l Inclined

Adit, tunnel, or slope ....41------1..- --- •.. - Syncline - Showing directio·n of plunge; dashed where approximately located; >-- Accessible >+- Inaccessible dotted where concealed x Prospect Asymmetric syncline - Short arrow indicates steeper limb Quarry ~ Active ~ Ab'andoned Overturned syncline - Showing direction of dip of limbs Gravel pit X Active X Abandoned Monocline - Showing direction of plunge of axis Oil well 0 Drilling 9 Shut-in -