Deglaciation and weathering of Larsemann Hills, East Antarctica.
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 p...
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Cambridge University Press
2009
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ftansto:oai:apo-prod.ansto.gov.au:10238/1917 2023-05-15T13:36:16+02:00 Deglaciation and weathering of Larsemann Hills, East Antarctica. Kiernan, K Gore, DB Fink, D White, DA McConnell, A Sigurdsson, IA 2009-08 http://apo.ansto.gov.au/dspace/handle/10238/1917 https://doi.org/10.1017/S0954102009002028 en eng Cambridge University Press 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. doi:10.1017/S0954102009002028 0954-1020 http://dx.doi.org/10.1017/S0954102009002028 http://apo.ansto.gov.au/dspace/handle/10238/1917 Antarctica Weathering Glaciers Beryllium 10 Isotope Dating Geochemistry Journal Article 2009 ftansto https://doi.org/10.1017/S0954102009002028 2020-04-27T22:28:36Z 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 Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet Australian Nuclear Science and Technology Organisation: ANSTO Publications Online East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Antarctic Science 21 04 373 |
institution |
Open Polar |
collection |
Australian Nuclear Science and Technology Organisation: ANSTO Publications Online |
op_collection_id |
ftansto |
language |
English |
topic |
Antarctica Weathering Glaciers Beryllium 10 Isotope Dating Geochemistry |
spellingShingle |
Antarctica Weathering Glaciers Beryllium 10 Isotope Dating Geochemistry Kiernan, K Gore, DB Fink, D White, DA McConnell, A Sigurdsson, IA Deglaciation and weathering of Larsemann Hills, East Antarctica. |
topic_facet |
Antarctica Weathering Glaciers Beryllium 10 Isotope Dating Geochemistry |
description |
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 |
format |
Article in Journal/Newspaper |
author |
Kiernan, K Gore, DB Fink, D White, DA McConnell, A Sigurdsson, IA |
author_facet |
Kiernan, K Gore, DB Fink, D White, DA McConnell, A Sigurdsson, IA |
author_sort |
Kiernan, K |
title |
Deglaciation and weathering of Larsemann Hills, East Antarctica. |
title_short |
Deglaciation and weathering of Larsemann Hills, East Antarctica. |
title_full |
Deglaciation and weathering of Larsemann Hills, East Antarctica. |
title_fullStr |
Deglaciation and weathering of Larsemann Hills, East Antarctica. |
title_full_unstemmed |
Deglaciation and weathering of Larsemann Hills, East Antarctica. |
title_sort |
deglaciation and weathering of larsemann hills, east antarctica. |
publisher |
Cambridge University Press |
publishDate |
2009 |
url |
http://apo.ansto.gov.au/dspace/handle/10238/1917 https://doi.org/10.1017/S0954102009002028 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) |
geographic |
East Antarctica Larsemann Hills |
geographic_facet |
East Antarctica Larsemann Hills |
genre |
Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet |
op_relation |
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. doi:10.1017/S0954102009002028 0954-1020 http://dx.doi.org/10.1017/S0954102009002028 http://apo.ansto.gov.au/dspace/handle/10238/1917 |
op_doi |
https://doi.org/10.1017/S0954102009002028 |
container_title |
Antarctic Science |
container_volume |
21 |
container_issue |
04 |
container_start_page |
373 |
_version_ |
1766076208155459584 |