Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum
Evidence is provided from a sediment core from saline Abraxas Lake, Vestfold Hills, that indicatesthat the lake existed through the Last Glacial Maximum. It can therefore be concluded that at least part of theVestfold Hills also remained ice-free through the Last Glacial Maximum, or at most was cove...
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ftunivtasecite:oai:ecite.utas.edu.au:54444 2023-05-15T13:40:51+02:00 Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum Gibson, JAE Paterson, KS White, CA Swadling, KM 2009 application/pdf http://www.cambridge.org/online/ https://doi.org/10.1017/S0954102009001801 http://ecite.utas.edu.au/54444 en eng Cambridge Univ Press http://ecite.utas.edu.au/54444/1/Abraxas.pdf http://dx.doi.org/10.1017/S0954102009001801 Gibson, JAE and Paterson, KS and White, CA and Swadling, KM, Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum, Antarctic Science, 21, (3) pp. 269-278. ISSN 0954-1020 (2009) [Refereed Article] http://ecite.utas.edu.au/54444 Biological Sciences Zoology Zoology not elsewhere classified Refereed Article PeerReviewed 2009 ftunivtasecite https://doi.org/10.1017/S0954102009001801 2019-12-13T21:27:22Z Evidence is provided from a sediment core from saline Abraxas Lake, Vestfold Hills, that indicatesthat the lake existed through the Last Glacial Maximum. It can therefore be concluded that at least part of theVestfold Hills also remained ice-free through the Last Glacial Maximum, or at most was covered by a thin,non-erosive cold-based ice sheet. The evidence for the continued existence of Abraxas Lake includes a 14Cdate that significantly predates the Last Glacial Maximum (though this cannot be considered direct proof ofthe existence of the lake prior to the Last Glacial Maximum); the presence of saline porewater throughoutthe core, including in compacted sediments deposited during the glacial period, which implies that the lakeobtained its salt prior to any Holocene marine highstand; and the occurrence of marine-derived fauna fromthe onset of significant biological activity late in the Pleistocene. The occurrence of ice-free land in theVestfold Hills and similar oases suggests that the margin of the polar ice cap did not reach far beyond itscurrent position at the Last Glacial Maximum, at least in regions now occupied by these oases. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica Ice cap Ice Sheet Polar Ice Cap eCite UTAS (University of Tasmania) East Antarctica Vestfold Hills Vestfold Abraxas Lake ENVELOPE(78.287,78.287,-68.489,-68.489) Antarctic Science 21 3 269 278 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Zoology Zoology not elsewhere classified |
spellingShingle |
Biological Sciences Zoology Zoology not elsewhere classified Gibson, JAE Paterson, KS White, CA Swadling, KM Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum |
topic_facet |
Biological Sciences Zoology Zoology not elsewhere classified |
description |
Evidence is provided from a sediment core from saline Abraxas Lake, Vestfold Hills, that indicatesthat the lake existed through the Last Glacial Maximum. It can therefore be concluded that at least part of theVestfold Hills also remained ice-free through the Last Glacial Maximum, or at most was covered by a thin,non-erosive cold-based ice sheet. The evidence for the continued existence of Abraxas Lake includes a 14Cdate that significantly predates the Last Glacial Maximum (though this cannot be considered direct proof ofthe existence of the lake prior to the Last Glacial Maximum); the presence of saline porewater throughoutthe core, including in compacted sediments deposited during the glacial period, which implies that the lakeobtained its salt prior to any Holocene marine highstand; and the occurrence of marine-derived fauna fromthe onset of significant biological activity late in the Pleistocene. The occurrence of ice-free land in theVestfold Hills and similar oases suggests that the margin of the polar ice cap did not reach far beyond itscurrent position at the Last Glacial Maximum, at least in regions now occupied by these oases. |
format |
Article in Journal/Newspaper |
author |
Gibson, JAE Paterson, KS White, CA Swadling, KM |
author_facet |
Gibson, JAE Paterson, KS White, CA Swadling, KM |
author_sort |
Gibson, JAE |
title |
Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum |
title_short |
Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum |
title_full |
Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum |
title_fullStr |
Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum |
title_full_unstemmed |
Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum |
title_sort |
evidence for the continued existence of abraxas lake, vestfold hills, east antarctica during the last glacial maximum |
publisher |
Cambridge Univ Press |
publishDate |
2009 |
url |
http://www.cambridge.org/online/ https://doi.org/10.1017/S0954102009001801 http://ecite.utas.edu.au/54444 |
long_lat |
ENVELOPE(78.287,78.287,-68.489,-68.489) |
geographic |
East Antarctica Vestfold Hills Vestfold Abraxas Lake |
geographic_facet |
East Antarctica Vestfold Hills Vestfold Abraxas Lake |
genre |
Antarc* Antarctic Science Antarctica East Antarctica Ice cap Ice Sheet Polar Ice Cap |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica Ice cap Ice Sheet Polar Ice Cap |
op_relation |
http://ecite.utas.edu.au/54444/1/Abraxas.pdf http://dx.doi.org/10.1017/S0954102009001801 Gibson, JAE and Paterson, KS and White, CA and Swadling, KM, Evidence for the continued existence of Abraxas Lake, Vestfold Hills, East Antarctica during the Last Glacial Maximum, Antarctic Science, 21, (3) pp. 269-278. ISSN 0954-1020 (2009) [Refereed Article] http://ecite.utas.edu.au/54444 |
op_doi |
https://doi.org/10.1017/S0954102009001801 |
container_title |
Antarctic Science |
container_volume |
21 |
container_issue |
3 |
container_start_page |
269 |
op_container_end_page |
278 |
_version_ |
1766141545738665984 |