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Geology; December 2001; v. 29; no. 12; p. 1103-1106; DOI: 10.1130/0091-7613(2001)029<1103:BHEAIF>2.0.CO;2
© 2001 Geological Society of America
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Bunger Hills, East Antarctica: Ice free at the Last Glacial Maximum

D.B. Gore1, E.J. Rhodes2, P.C. Augustinus3, M.R. Leishman4, E.A. Colhoun5 and J. Rees-Jones6

1 Department of Physical Geography, Macquarie University, Sydney, New South Wales 2109, Australia
2 Research Laboratory for Archaeology and the History of Art, Oxford University, 6 Keble Road, Oxford OX1 3QJ, UK
3 Departments of Geography and Geology, University of Auckland, Auckland 1030, New Zealand
4 Department of Biological Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
5 School of Geosciences, University of Newcastle, New South Wales 2308, Australia
6 Oxford Authentification Ltd., Boston House, Grove Technology Park, Wantage, Oxfordshire OX12 9FF, UK

Optically stimulated luminescence dating of glaciofluvial and glacial-lake shoreline sediments indicates that the Bunger Hills area, in coastal East Antarctica, was largely ice free by the Last Glacial Maximum (LGM). Deglaciation commenced as early as 30 ka, and the southern hills were completely exposed by 20 ka. The sediments do not record evidence of an LGM readvance. Previous reconstructions of LGM ice limits for the area are incompatible with this new evidence.

Key Words: East Antarctica • Last Glacial Maximum • deglaciation • luminescence analysis




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A. Mackintosh, D. White, D. Fink, D. B. Gore, J. Pickard, and P. C. Fanning
Exposure ages from mountain dipsticks in Mac. Robertson Land, East Antarctica, indicate little change in ice-sheet thickness since the Last Glacial Maximum
Geology, June 1, 2007; 35(6): 551 - 554.
[Abstract] [Full Text] [PDF]


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