Late Wisconsin Reconstruction for the Ross Sea Region, Antarctica

Abstract If sea-level depression in the Ross Sea embayment were: (1) < 120–130 m, or (2) > 120–130 m but sustained for < 10 4 a, it is unlikely that the Ross Ice Shelf would have become fully grounded over the whole continental shelf during Wisconsin times. Sediments flooring th...

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Bibliographic Details
Published in:Journal of Glaciology
Main Author: Drewry, David J.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1979
Subjects:
Earth-Surface Processes
Ross Sea
McMurdo Sound
Ross Ice Shelf
Antarc*
Antarctica
Ice Shelf
Journal of Glaciology
Online Access:http://dx.doi.org/10.1017/s0022143000014763
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014763
Description
Summary:Abstract If sea-level depression in the Ross Sea embayment were: (1) < 120–130 m, or (2) > 120–130 m but sustained for < 10 4 a, it is unlikely that the Ross Ice Shelf would have become fully grounded over the whole continental shelf during Wisconsin times. Sediments flooring the Ross Sea and recent estimates of sea-level lowering and post-glacial emergence yield little support for grounded ice but do provide some evidence for expanded ice-shelf conditions. A reconstruction is presented based on this premise. The model is compatible with glacial geologic results, especially those in the McMurdo Sound area.

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