Crag and tail features on the Amundsen Sea continental shelf
On parts of glaciated continental margins, especially the inner shelves around Antarctica, grounded ice has removed pre-existing sedimentary cover, leaving subglacial bedforms on eroded substrates (Anderson et al. 2001; Wellner et al. 2001). While the dominant subglacial bedforms often follow a dist...
Main Authors: | , , , , |
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Other Authors: | , , , , |
Format: | Book Part |
Language: | unknown |
Published: |
Geological Society of London
2016
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Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/513831/ http://mem.lyellcollection.org/content/46/1/199.short |
Summary: | On parts of glaciated continental margins, especially the inner shelves around Antarctica, grounded ice has removed pre-existing sedimentary cover, leaving subglacial bedforms on eroded substrates (Anderson et al. 2001; Wellner et al. 2001). While the dominant subglacial bedforms often follow a distinct, relatively uniform pattern that can be related to overall trends in palaeo-ice flow and substrate geology (Wellner et al. 2006), others are more randomly distributed and may reflect local substrate variations. Here we describe and discuss examples of large, isolated crag-and-tail features that are recognized on the Amundsen Sea continental shelf. |
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