Deglaciation and weathering of Larsemann Hills, East Antarctica
In situ cosmogenic 10Be 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 pr...
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Online Access: | https://eprints.utas.edu.au/9920/ https://eprints.utas.edu.au/9920/1/Kiernan.pdf https://doi.org/10.1017/S0954102009002028 |
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ftunivtasmania:oai:eprints.utas.edu.au:9920 2023-05-15T13:36:47+02:00 Deglaciation and weathering of Larsemann Hills, East Antarctica Kiernan, K Gore, D Fink, D White, D McConnell, A Sugurdsson, I 2009-08 application/pdf https://eprints.utas.edu.au/9920/ https://eprints.utas.edu.au/9920/1/Kiernan.pdf https://doi.org/10.1017/S0954102009002028 en eng https://eprints.utas.edu.au/9920/1/Kiernan.pdf Kiernan, K, Gore, D, Fink, D, White, D, McConnell, A and Sugurdsson, I 2009 , 'Deglaciation and weathering of Larsemann Hills, East Antarctica' , Antarctic Science, vol. 21, no. 4 , pp. 373-382 , doi:10.1017/S0954102009002028 <http://dx.doi.org/10.1017/S0954102009002028>. cc_utas Broknes cosmogenic nuclide exposure age mumiyo salt geochemistry Stornes Article PeerReviewed 2009 ftunivtasmania https://doi.org/10.1017/S0954102009002028 2020-05-30T07:23:37Z In situ cosmogenic 10Be 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 100 ka 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 ,20–18 ka BP. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet University of Tasmania: UTas ePrints East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Broknes ENVELOPE(76.346,76.346,-69.391,-69.391) Stornes ENVELOPE(76.099,76.099,-69.429,-69.429) Antarctic Science 21 04 373 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Broknes cosmogenic nuclide exposure age mumiyo salt geochemistry Stornes |
spellingShingle |
Broknes cosmogenic nuclide exposure age mumiyo salt geochemistry Stornes Kiernan, K Gore, D Fink, D White, D McConnell, A Sugurdsson, I Deglaciation and weathering of Larsemann Hills, East Antarctica |
topic_facet |
Broknes cosmogenic nuclide exposure age mumiyo salt geochemistry Stornes |
description |
In situ cosmogenic 10Be 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 100 ka 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 ,20–18 ka BP. |
format |
Article in Journal/Newspaper |
author |
Kiernan, K Gore, D Fink, D White, D McConnell, A Sugurdsson, I |
author_facet |
Kiernan, K Gore, D Fink, D White, D McConnell, A Sugurdsson, I |
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 |
publishDate |
2009 |
url |
https://eprints.utas.edu.au/9920/ https://eprints.utas.edu.au/9920/1/Kiernan.pdf https://doi.org/10.1017/S0954102009002028 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(76.346,76.346,-69.391,-69.391) ENVELOPE(76.099,76.099,-69.429,-69.429) |
geographic |
East Antarctica Larsemann Hills Broknes Stornes |
geographic_facet |
East Antarctica Larsemann Hills Broknes Stornes |
genre |
Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica Ice Sheet |
op_relation |
https://eprints.utas.edu.au/9920/1/Kiernan.pdf Kiernan, K, Gore, D, Fink, D, White, D, McConnell, A and Sugurdsson, I 2009 , 'Deglaciation and weathering of Larsemann Hills, East Antarctica' , Antarctic Science, vol. 21, no. 4 , pp. 373-382 , doi:10.1017/S0954102009002028 <http://dx.doi.org/10.1017/S0954102009002028>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1017/S0954102009002028 |
container_title |
Antarctic Science |
container_volume |
21 |
container_issue |
04 |
container_start_page |
373 |
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1766083924027506688 |