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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Cambridge University Press (CUP)
1997
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Online Access: | http://dx.doi.org/10.1017/s0954102097000412 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000412 |
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crcambridgeupr:10.1017/s0954102097000412 2024-03-03T08:38:04+00:00 Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases Gore, Damian B. 1997 http://dx.doi.org/10.1017/s0954102097000412 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000412 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 9, issue 3, page 336-346 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1997 crcambridgeupr https://doi.org/10.1017/s0954102097000412 2024-02-08T08:37:57Z 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 kilometres 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 Cambridge University Press Antarctic East Antarctica Amery ENVELOPE(-94.063,-94.063,56.565,56.565) 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) Antarctic Science 9 3 336 346 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Gore, Damian B. Blanketing snow and ice; constraints on radiocarbon dating deglaciation in East Antarctic oases |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
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 kilometres 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 |
publisher |
Cambridge University Press (CUP) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1017/s0954102097000412 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000412 |
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 |
Antarctic East Antarctica Amery Larsemann Hills Stillwell Hills Taylor Islands |
geographic_facet |
Antarctic East Antarctica Amery 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 |
Antarctic Science volume 9, issue 3, page 336-346 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102097000412 |
container_title |
Antarctic Science |
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9 |
container_issue |
3 |
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336 |
op_container_end_page |
346 |
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1792504283206254592 |