Bedrock Channels in Pine Island Bay, West Antarctica

The seafloor of inner continental shelves on glaciated margins is sometimes stripped of most of the softer sediments, leaving bedrock exposed (Wellner et al. 2001). Examples of such exposed bedrock regions have been observed in the inner parts of several cross-shelf troughs on the West Antarctica ma...

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Bibliographic Details
Published in:Geological Society, London, Memoirs
Main Authors: Nitsche, F. O., Larter, R. D., Gohl, K., Graham, A. G. C., Kuhn, G.
Format: Article in Journal/Newspaper
Language:unknown
Published: Digital Commons @ University of South Florida 2016
Subjects:
Life Sciences
West Antarctica
Amundsen Sea
Marguerite
Lowe
Marguerite Bay
Island Bay
Pine Island Bay
Antarc*
Antarctica
Pine Island
Online Access:https://digitalcommons.usf.edu/msc_facpub/1566
https://doi.org/10.1144/M46.1
Description
Summary:The seafloor of inner continental shelves on glaciated margins is sometimes stripped of most of the softer sediments, leaving bedrock exposed (Wellner et al. 2001). Examples of such exposed bedrock regions have been observed in the inner parts of several cross-shelf troughs on the West Antarctica margin, including those in the Amundsen Sea (Lowe & Anderson 2003; Graham et al. 2009) and Marguerite Bay (Anderson & Fretwell 2008). The detailed morphology of these areas consists of various features of glacial origin, predominantly parallel grooves or striations. These areas can also contain sinuous channels that are incised deeply into the rock substrate.

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