Terminal Moraines in the Fjord Basins of Sub-Antarctic South Georgia

• Published in: Geological Society, London, Memoirs
• Main Authors: Graham, A. G. C., Hodgson, D. A.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Digital Commons @ University of South Florida 2016
• Subjects: Life Sciences; Antarctic; Hodgson; Antarc*; Ice cap
• Online Access: https://digitalcommons.usf.edu/msc_facpub/1560; https://doi.org/10.1144/M46.165

Sub-Antarctic South Georgia (54° 17′ S, 36° 30′ W, 3755 km2) is a large heavily glacierized island that is 170 km long, 39 km wide and rises to elevations of 2934 m. The island has extensive evidence of past glacial expansion with moraines preserved on land (Bentley et al. 2007), in the fjords (Hodgson et al. 2014) and in glacial troughs that extend 60–100 km to the edge of the continental shelf where some terminate in trough-mouth fans (Graham et al. 2008). A paucity of chronological control means that, at present, it is not possible to identify which of these sets of features mark the limit of a more extensive ice cap from the Last Glacial Maximum (LGM).