Evidence for a Former Large Ice Sheet in the Orville Coast–Ronne Ice Shelf Area, Antarctica

Abstract The Orville Coast area of the Antarctic Peninsula was extensively glacierized in the past. Striations, polished rock surfaces, and erratics on nunatak summits indicate that this area was covered by a broad regional ice sheet whose grounded ice margin was on the continental shelf, in the pre...

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Bibliographic Details
Published in:Journal of Glaciology
Main Author: Carrara, Paul
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1981
Subjects:
Earth-Surface Processes
Antarctic
The Antarctic
Antarctic Peninsula
Ross Sea
Ronne Ice Shelf
Orville
Orville Coast
Antarc*
Antarctica
Ice Sheet
Ice Shelf
Journal of Glaciology
Sea ice
Online Access:http://dx.doi.org/10.1017/s0022143000011527
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000011527
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Summary:Abstract The Orville Coast area of the Antarctic Peninsula was extensively glacierized in the past. Striations, polished rock surfaces, and erratics on nunatak summits indicate that this area was covered by a broad regional ice sheet whose grounded ice margin was on the continental shelf, in the present-day Ronne Ice Shelf area. If the glacial history of Antarctica has been controlled by eustatic sea-level changes, the destruction of this ice sheet would have been contemporaneous with that of the Ross Sea ice sheet due to the world-wide rise of eustatic sea-level at the end of the Wisconsin glaciation.

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