Geology of the area between the Axel Heiberg and Shackleton Glaciers, Queen Maud Range, Antarctica

Autor:	V. R. McGregor
Rok vydání:	1965
Předmět:	geography geography.geographical_feature_category Paleozoic Hornfels Schist Geology Conglomerate Volcanic rock Igneous rock Paleontology Geophysics Basement (geology) Earth and Planetary Sciences (miscellaneous) Ordovician
Zdroj:	New Zealand Journal of Geology and Geophysics. 8:314-343
ISSN:	1175-8791 0028-8306
DOI:	10.1080/00288306.1965.10428114
Popis:	A preliminary account is given of the geology of the Lower Paleozoic basement complex in the Queen Maud Range between the Axel Heiberg and Shackleton Glaciers. Three new formations are proposed for metamorphosed sedimentary and minor volcanic rocks of the Ross Supergroup which crop out only within 20 km of the coast. The Duncan Formation, composed of dark pelitic hornfels and schist, is overlain by the Fairweather Formation, which is composed of cataclastic rocks believed to have been derived from sandstone. The Henson Marble, composed mainly of marble and intruded by small laccoliths of basic igneous rocks, overlies the Fairweather Formation. A unit of sandstone and conglomerate is inferred to be younger than the Henson Marble. The Ross Supergroup was folded about axes trending north to north-west. Between the Middle Cambrian and Ordovician the Ross Supergroup was intruded by a rather varied calc-alkaline plutonic association correlated with the Granite Harbour Intrusives. Pretectonic intrusives...
Databáze:	OpenAIRE
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