Lexicon of Antarctic Stratigraphic Names Introduced by Members of United States Expeditions (1972) / Chapter Skim
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Pages 68-89
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3 . Type section a .
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2 . Definition "The Marie Byrd Land basaltic hyaloclas tites are found in the basal part of the volcanic success ion , which is exposed principally in the ranges near the ·Coast .
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2 , 500 feet above the floor of the valley near the top of MOunt Nussbaum. " (Plwft, 502 )
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b . Lithology Dark-gray , medium-grained gneiss with well developed compos itional banding .
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plutonic rocks with poorly developed fol iat ion. " ( Craddoc: t et al , 93 )
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4 . Synonyms or c losely related names · Member A , lower part .
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MOunt Bast ion Formation 1 . Firs t published use Mirsky , A
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Glac ier area , Queen Maud Range , Transantarctic Mountains , Antarc tica : GSA Bul l , 81 , p .
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b . The Mount But ters Formation was inc luded as the lower part of the MacKe l lar Format ion by Wade and others (Sc ienc e , vol .
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2 . Definition "The MOunt Glossopteris Formation is the uppermost sedimentary unit of the Ohio Range and is composed of about 2000 ft .
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2 . Definit ion "However , a basement complex of metamorphic and igneous rocks crops out in a small , isolated corner at the northwes t corner of Gran Valley .
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irregular or torrential ly cros s- bedded . Rip p le marks , des iccat ion cracks , c lay- gal l c onglomerates c ommon .
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2 . Definit ion "Mount Pirrit" is apparently granite .
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5 . Correlat ives Coeval with widespread Juras s ic volcanic rocks throughout Antarctic Peninsula and e as tern E l lswor th Land Mount Schopf diabase 1.
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Mount S idley till 1. First published use Doumani , G .
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3 . Type section a.
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Robert S cott Glacier Area , Queen Maud Range , Antarct ica : GSA Spec Pap 76 , p .
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b . Thickness 40 feet c .
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2 . De finition ' 'The coal is dul l , black, hmnic b itmninous mater ial .
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2 . Definit ion "The gran i t ic basement contains abundant xenol i ths of sch i s t and gne iss and numerous pegmati te ve ins .
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Mount Weaver t il l i te 1 1 . F irs t publ ished use Doumani , G .A.
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b . Relat ion to other units Overlies MOunt Weaver coal c.
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