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Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/1917

Title: Deglaciation and weathering of Larsemann Hills, East Antarctica.
Authors: Kiernan, K
Gore, DB
Fink, D
White, DA
McConnell, A
Sigurdsson, IA
Keywords: Antarctica
Weathering
Glaciers
Beryllium 10
Isotope Dating
Geochemistry
Issue Date: Aug-2009
Publisher: Cambridge University Press
Citation: Kiernan, K., Gore, D. B., Fink, D., White, D. A., McConnell, A., & Sigurdsson, I. A. (2009). Deglaciation and weathering of Larsemann Hills, East Antarctica. Antarctic Science, 21(4), 373-382.
Abstract: In situ cosmogenic Be-10 exposure dating, radiocarbon determinations, salt and sediment geochemistry, and rock weathering observations indicate that parts of Larsemann Hills, East Antarctica have been subaerially exposed throughout much of the last glacial cycle, with the last glaciation occurring prior to 100ka BP. Salt-enhanced subaerial weathering, coupled with a paucity of glacial erratics, made exposure age dating challenging. Rapid subaerial surface lowering in some places means that some exposure ages may underestimate the true age of deglaciation. Despite this uncertainty, the data are consistent with the absence of overriding by a thick ice sheet during the Last Glacial Maximum similar to 20-18 ka BP. © 2009, Cambridge University Press
URI: http://dx.doi.org/10.1017/S0954102009002028
http://apo.ansto.gov.au/dspace/handle/10238/1917
ISSN: 0954-1020
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