Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases
Radiocarbon dating of marine, lacustrine or terrestrial biogenic deposits is the main technique used to determine when deglaciation of the oases of East Antarctica occurred. However, at many of the oases of East Antarctica, including the Schirmacher Oasis, Stillwell Hills, Amery Oasis, Larsemann Hil...
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/4ce56ab8-2f2e-473f-92a1-944f6dd38df1 2024-06-23T07:46:07+00:00 Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases Gore, Damian B. 1997-09 https://researchers.mq.edu.au/en/publications/4ce56ab8-2f2e-473f-92a1-944f6dd38df1 http://www.scopus.com/inward/record.url?scp=0030793788&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Gore , D B 1997 , ' Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases ' , Antarctic Science , vol. 9 , no. 3 , pp. 336-346 . Biogenic sediment Deglaciation Quaternary Radiocarbon dating Superimposed ice article 1997 ftmacquarieunicr 2024-06-05T23:47:46Z Radiocarbon dating of marine, lacustrine or terrestrial biogenic deposits is the main technique used to determine when deglaciation of the oases of East Antarctica occurred. However, at many of the oases of East Antarctica, including the Schirmacher Oasis, Stillwell Hills, Amery Oasis, Larsemann Hills, Taylor Islands and Grearson Oasis, snow and ice presently forms extensive blankets that fills valleys and some lake basins; covers perennial lake ice and in places overwhelms local topography to form ice domes up to hundreds of square kilometers in area. Field observations from Larsemann Hills and Taylor Islands suggest that under these conditions, terrestrial and lacustrine biogenic sedimentation is neither widespread nor abundant. If similar conditions prevailed in and around the oases immediately following retreat of the ice sheet, then a lengthy hiatus might exist between deglaciation and the onset of widespread or abundant biogenic sedimentation. As a result, radiocarbon dating might be a clumsy tool with which to reconstruct deglaciation history, and independent dating methods that record emergence of the hilltops from the continental ice must be employed as well. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Taylor Islands Macquarie University Research Portal Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Antarctic East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Stillwell Hills ENVELOPE(59.467,59.467,-67.417,-67.417) Taylor Islands ENVELOPE(100.302,100.302,-66.164,-66.164) |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
Biogenic sediment Deglaciation Quaternary Radiocarbon dating Superimposed ice |
spellingShingle |
Biogenic sediment Deglaciation Quaternary Radiocarbon dating Superimposed ice Gore, Damian B. Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases |
topic_facet |
Biogenic sediment Deglaciation Quaternary Radiocarbon dating Superimposed ice |
description |
Radiocarbon dating of marine, lacustrine or terrestrial biogenic deposits is the main technique used to determine when deglaciation of the oases of East Antarctica occurred. However, at many of the oases of East Antarctica, including the Schirmacher Oasis, Stillwell Hills, Amery Oasis, Larsemann Hills, Taylor Islands and Grearson Oasis, snow and ice presently forms extensive blankets that fills valleys and some lake basins; covers perennial lake ice and in places overwhelms local topography to form ice domes up to hundreds of square kilometers in area. Field observations from Larsemann Hills and Taylor Islands suggest that under these conditions, terrestrial and lacustrine biogenic sedimentation is neither widespread nor abundant. If similar conditions prevailed in and around the oases immediately following retreat of the ice sheet, then a lengthy hiatus might exist between deglaciation and the onset of widespread or abundant biogenic sedimentation. As a result, radiocarbon dating might be a clumsy tool with which to reconstruct deglaciation history, and independent dating methods that record emergence of the hilltops from the continental ice must be employed as well. |
format |
Article in Journal/Newspaper |
author |
Gore, Damian B. |
author_facet |
Gore, Damian B. |
author_sort |
Gore, Damian B. |
title |
Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases |
title_short |
Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases |
title_full |
Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases |
title_fullStr |
Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases |
title_full_unstemmed |
Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases |
title_sort |
blanketing snow and ice; constraints on radiocarbon dating deglaciation in east antarctic oases |
publishDate |
1997 |
url |
https://researchers.mq.edu.au/en/publications/4ce56ab8-2f2e-473f-92a1-944f6dd38df1 http://www.scopus.com/inward/record.url?scp=0030793788&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(59.467,59.467,-67.417,-67.417) ENVELOPE(100.302,100.302,-66.164,-66.164) |
geographic |
Amery Antarctic East Antarctica Larsemann Hills Stillwell Hills Taylor Islands |
geographic_facet |
Amery Antarctic East Antarctica Larsemann Hills Stillwell Hills Taylor Islands |
genre |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Taylor Islands |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Taylor Islands |
op_source |
Gore , D B 1997 , ' Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases ' , Antarctic Science , vol. 9 , no. 3 , pp. 336-346 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1802644039651033088 |