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Enhanced bedrock weathering in association with late-lying snowpatches: Evidence from Livingston Island, Antarctica

Hall, Kevin. 1993 Enhanced bedrock weathering in association with late-lying snowpatches: Evidence from Livingston Island, Antarctica. Earth Surface Processes and Landforms, 18 (2). 121-129. 10.1002/esp.3290180204

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Abstract/Summary

An indication of the extent of weathering on different aspects of rock outcrops on Livingston Island, Antarctica, was obtained by means of a Schmidt hammer, a cone indenter and measurement of weathering rind thickness. Results show that weathering, particularly chemical weathering, is enhanced on the lee side of outcrops where snow accumulates as a result of prolonged wetting by the melting snow. Rock moisture and temperature data indicate that the south-facing, snow-accumulation side of obstacles have high rock moisture levels and maintain relatively high temperatures. Whilst chemical weathering is greater on the leeward side of outcrops, mechanical processes are greater on the windward side. The presence of late-lying snow thus appears to exert a strong influence on weathering.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1002/esp.3290180204
Programmes: BAS Programmes > Pre 2000 programme
ISSN: 01979337
Additional Keywords: weathering, snowpatches, Antarctica, Schmidt hammer, indenter, weathering rinds
Date made live: 06 Sep 2017 13:29 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/517735

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