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Glacial climates in the Antarctic region during the late Paleogene: Evidence from northwest Tasmania, Australia.

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Macphail, MK and Colhoun, EA and Kiernan, K and Hannan, D (1993) Glacial climates in the Antarctic region during the late Paleogene: Evidence from northwest Tasmania, Australia. Geology, 21 (2). pp. 145-148. ISSN 0091-7613

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Abstract

Published data suggest that ice buildup commenced in Antarctica during the late middle Eocene. This predates by 30 m.y. the earliest evidence of Cenozoic glaciation on other fragments of Gondwana, although several of these were at high latitudes during the Paleogene. We provide new evidence for local glacier development during the late Paleogene in Tasmania, then a mountainous peninsula at about lat 55°-63°S projecting into the circum-Antarctic ocean. The date of glaciation is not precisely known, but an earliest Oligocene age is indicated. We suggest that episode may correlate with abrupt cooling of the sea surface surrounding Antarctica during the earliest Oligocene (36 Ma).

Item Type: Article
Journal or Publication Title: Geology
Page Range: pp. 145-148
ISSN: 0091-7613
Additional Information: Copyright © 1993 Geological Society of America
Date Deposited: 17 Dec 2010 05:33
Last Modified: 17 Dec 2010 05:33
URI: http://eprints.utas.edu.au/id/eprint/10113
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