Lexicon of Antarctic Stratigraphic Names: Introduced by Members of United States Expeditions (1972)

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LEXICON OF ANTARCTIC STRATIGRAPHIC NAMES Introduced by Members of Uni ted S tates Exped it ions WARREN WEGNER and CAMPBELL CRADDOCK Commit tee on Polar Research NATIONAL ACADEMY OF SCIENCES NATIONAL RESEARCH COUNCIL 2101 Const i tut ion Avenue washington, D . c. 20418 July 1972 NAS-NAE OCT 1 91972 LIBRARY

PREFACE At i t s 1968 mee t ing in Tokyo , the Working Group on Geology of the Scientific Committee on Antarctic Research (SCAR) discussed the need for a S tratigraphic Lexicon of Antarctica, and it was agreed that each SCAR nation should prepare a lis t of entries that would include all strati­ graphic names introduced by members of its own expeditions. By the time of the following meeting of the Working Group on Geology in Oslo in 1970, most members reported some progress in this arduous task of compilation. Because of other commitments to Antarct ic geology, I was unable to begin assembl ing the U. S . contribut ion unt i l early 1971 . I organized and supervised the proj ec t, but the d ifficul t work of searching the litera­ ture for the necessary information was accomplished be tween February and June 1 971 by Warren Wegner, then a graduate s tudent in geology at the Un iver s i ty of Wi sc on s in . A number o f problems and decisions had t o b e fac ed , and s ome o f the se bear spec ial comment: •Because of the free flow of per sonnel between nat i ons and proj ects in Antarct ic research, the de fin i t ion of a member of a U. S . exped i t ion has become somewhat arbitrary . Some ind iv iduals wi th s trong tie s to the U. S . program are inc luded, even though some of the ir work has been with the exped itions of other nat ions , for the sake of comple tene ss. • Some s trat igraphic names are modif ied or formalized by la ter workers . Names so al tered by u.s. geolog i s t s are included here . •Some s tratigraphic names become obsole te, and these are so de s ig­ nated where known to us . •The locations of maj or features are g iven by reg ion in Antarct ic a, those of minor features by long itude and latitude . Readers may wish to re fer to the gazetteer of Antarct ic place names publ ished by the Board on Geographic Names of the U . S . Department of the Inter ior, and to the 1 : 5, 000, 000 Map of Antarct ica publ ished by the American Geograph ical Soc iety . •In formation on the age of a rock uni t is inc luded i f ment ioned in the re ference work or otherwise known , but no effor t has been made to compile al l age evidence reported in the vas t l i terature . Add itional i i i

information on the probable age s of rock units can be obtained by re ference to the Antarct ic Fol io Series Fol io 1 2 , Geolog ic Maps of Antarct ica , or to the 1:5, 000 , 000 Geol og ic Map of Antarct ic a , both publ ished by the Amer ican Geographical Soc iety . •F inally , this work i s not in tended as a c r i t ical appraisal of the valid i ty of terms, but merely as a comp ilation of the names that have been introduced . In general , we have followed the or iginal usage wi thout regard to current strat igraphic convent ions . We have tr ied to make the coverage as complete as pos s ible , and we have included all literature availab le to us in the spring of 1 9 7 1 . Our pr inc ipal sources have been the review paper on Antarc t ic geology by John Anderson in Volume 6 of the Antarc t ic Re search Series and the Antarct ic bibl iography cards of the Library of Congress . We have reviewed the geological act iv i t ies of the Byrd , Ellswor th, U . S . Antar c t ic Service , Highj ump, Windmill, and Ronne Exped itions, as well as the more recent IGY and USARP programs . Never theless, i t is unl ike ly that our c ompilation of names is comple te, and we w i l l we lcome notice of any omiss ions . We apprec iate ed i t ing and sugge stions from A . B. Ford , L . M . Gould , K . LaPrade, W . LeMasur ier , R . L . Nicho l s , R . H . Rutford, J . F . Spl e t t­ stoes ser, M . D . Turner , F . A. Wade , and P . L . Will iams , but responsibi l i ty for errors and omiss ions remains ours alone . Dr . Henry M . Dater gave help ful advice about the sc ien t i fic act ivi ties of early exped i tions . We are grateful to Jud i th We lch and Shir ley Blow for patient as s is tance in typ ing this leng thy d ocument . Campbell Craddock U. S . member, SCAR Working Group on Geology Mad ison , Wisconsin June 4 , 1 972 iv

CONTENTS Preface • • . . . . . . . . . . . . . . . . . . . . . . . . . Alphabe t ical Lis t of Entries Al exander Is land sed imentary rocks • • • Base Gabr i e l Gonzalez Videla andes i te Base Gabrie l Gonzalez Videla apl i te Bas tion Sequence . . • . . . . • . Beacon Sand s tone • . . , . . . . • • Berteaux quartz d ior ite • • • • • Black Thumb Mountain ultramafic rock Brown Ridge Conglomerate • • • Buckeye T i l l i te • • . • • • . Bunger Lake charnock i te ser ies • But ters format i on Canelo Point d ior i te • • • • • • • • • • • Canis teo Peninsula gne i s s • • • • • • • • Cape E ie l son hornbl end ite • • • . • • • • • • • • Cape Royds kenyte or anor thoclase trachyte Chasm Is land Granite • . • . • • . • • Clark Mountains granite • . • • • • • Clark Mountains me tased imentary rocks Crary Mountains basalt • • Crashsite Quar tzi te Decept ion Is land volcanics Di scovery Ridge Formation • • • • Doumer Is land quar tz d ior i te • Dover Sand s t one . . • • • • • Dufek Mas s i f igneous sequence Dus t in Is land granitoid rock • • . . . . . . . . . Eas t Base hornblende granite Edsel Ford granod ior ite • • • • • Edsel Ford me tamorphic rocks • • • • • • • • • • • E ight s Coas t quar tz d iori te • • • • • • • • • • Elbow Format ion • • • • • • . • • • , • • • • • • • E l l iott Sandstone • • . • • • E l l sworth Mountains sed imentary rocks Eternity Range granod ior i te • • • • • Execut ive Comm i t tee grey tuff • • • • • • • • • • • • • Execut ive Committee o l ivine andes i te • • • Executive Commi t tee red tuff • , • • • • • . . . Executive Commit tee ye l l ow tuff • • • • • • • v i i i 1 1 2 3 4 5 5 6 7 8 9 9 10 1 1 1 1 12 13 13 14 1 5 1 6 1 7 1 7 1 8 1 9 20 20 2 1 22 23 24 25 26 2 7 2 7 28 29 30

F inger Mountain sand s tone F l eming granite . . . For tress Sequence • . . • • Fosd ick basal t • . . . • • • Fryxe l l G l ac iation depos its . . . . . . . . Gale Muds tone Gambacorta Format ion • • • • • • Ger lache Strai t s granod iori te Gerl ache Stra i ts metased imentary Ger l ache Stra i ts volcanic rocks Glaciat ion depos i t s , F ir s t • Glac iat ion depos i t s , Second Glaciat ion depos its , Third • . Glac iat ion depos its , Four th . . . . . . rocks • Hal l e t t Volcan ic s • • . • . • • . He iser Sands tone • • • • . Her itage Range lower group • Hor l ick Format ion • • • • • • • • • • Horl ick Mountains basal sands Horl ick Mountains granod iori te . . . Horl ick Mountain quartz monzonite • • • • • Hudson Mountains ol ivine basal t • • • • Hudson Mountains ol ivine- basal t pyroc lastics • • Hut Point basalt • • • • • • • • • • • • • . Is la 11 Dott'' arg i l l aceous me tac onglomerate • • • Is la " Dott" porphyr i t ic andes ite • • • • • • • • • • • • Is l a "Lomni tz" arg i l l ite • • • • . . . • • • Is la "Lomni tz" quartz d iorite • • • Johnson Nunatak Jone s Mountains Jones Mountains Jone s Mountains sand s tone basal t • • fe l s ic extrus ive& fe l s i te • • • • Jones Mountains gran ite • • • . • • • • Jone s Mountains ol ivine basal t • • • • Koe t t l i tz Glaciation depos its LaGorce Formation • • • • • • Lass i ter Coas t plutonic r ocks . . . . . . . . . Latady Format ion • • • Lateral Mora ine Pluton Legoup i l Formation • • Lepley granitoid rock • • Leverett Format ion • Littlewood daci te • • • • Littl ewood Volcan ics • . . . . . . . . . . . . . . . . . vi . . . . 3 1 32 33 34 35 35 36 37 38 39 39 40 41 41 42 43 44 45 46 47 48 48 49 49 50 51 51 52 54 54 55 56 57 58 59 60 6 1 6 1 6 2 6 3 64 64 6 5 66

Loop Glac iation depos ita • • Lower Wr ight Glac ier t i l l I Lower Wr ight Glac ier t i l l II • Marie Byrd Land basaltic hyaloc laatitea MCMurdo Glac iation depos ita McMurdo paragne iaa • . • • • McMurdo t i 1 1 • . • . . • . • McNamara Is land d iori te Member Al of Beacon Group Mount Atwood adame l l i te Mount Bastion Formation Mount But ters Format ion • • • • . . . . . Mount Byerly grani te • • • • • . • • • • Mount Glossopteris Formation Mount Gran gne iss • • • • Mount Kenyon Formation Mount Petras fe l s i te • Mount Pirri t Granite • • • • • • Mount Pos ter volcan ic s • Mount Schop f d iabase • • • Mount S idley t i l l • • • • • Mount S id l ey trachyte and ande s i te • • • • Mount Spann quartzite • • • • • • • • • Mount Weaver basal congl omerate Mount Weaver black shale • • . . Mount Weaver burrowed sands tone Mount Weaver coal • . • • • Mount Weaver gran ite • • . . • Mount Weaver p laty sandstone . Mount Weaver t i l l ite I . • Mount Weaver t i l l i te II Mount Wilbur granite • • . . . . . . . . . . . . . . Nelson Limes tone • • • • • • • • • • • • • Neny Glac ier Island gabbro • • • • • • • Neny I s land Sch ist • • • • • • • • . . • • • • Nep tune Group • • • • • • • • . • • . • • • • Nep tune Range fe l s ic rock . • • • Nep tune Range lavas and flows Nep tune Range rhyo l i tic porphyry New Mountain sand s tone • • • Parad ise Bay quartz d iori te • • • Patuxent Formation • • . • • . Patuxent Mountains carbonate rock Patuxent Mountains d iabase • Patuxent Mountains lamprophyre Pecora Formation • • • . • Pec ten Glac iation depos ita • • • vi i . . . . 6 7 6 7 6 8 6 8 6 9 70 7 1 7 1 72 73 74 74 76 76 7 7 7 8 79 79 80 81 82 82 83 83 84 85 85 86 87 88 88 89 90 91 91 92 93 94 95 95 96 97 98 .99 100 101 102