Crag-and-tail Features on the Amundsen Sea Continental Shelf, West Antarctica

• 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; Antarc*; Antarctica
• Online Access: https://digitalcommons.usf.edu/msc_facpub/1565; https://doi.org/10.1144/M46.2

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.