Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene
Abstract The rapid warming observed in the western Antarctic Peninsula gives rise to a fast disintegration of ice shelves and thinning and retreat of marine-terminating continental glaciers, which is likely to raise global sea levels in the near future. In order to understand the contemporary change...
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Online Access: | http://dx.doi.org/10.1017/s0954102019000439 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102019000439 |
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crcambridgeupr:10.1017/s0954102019000439 2024-03-03T08:38:29+00:00 Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene Çiner, Attila Yildirim, Cengiz Sarikaya, M. Akif Seong, Yeong Bae Yong Yu, Byung 2019 http://dx.doi.org/10.1017/s0954102019000439 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102019000439 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 31, issue 6, page 319-331 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2019 crcambridgeupr https://doi.org/10.1017/s0954102019000439 2024-02-08T08:47:05Z Abstract The rapid warming observed in the western Antarctic Peninsula gives rise to a fast disintegration of ice shelves and thinning and retreat of marine-terminating continental glaciers, which is likely to raise global sea levels in the near future. In order to understand the contemporary changes in context and to provide constraints for hindcasting models, it is important to understand the Late Quaternary history of the region. Here, we build on previous work on the deglacial history of the western Antarctic Peninsula and we present four new cosmogenic 10 Be exposure ages from Horseshoe Island in Marguerite Bay, which has been suggested as a former location of very fast ice stream retreat. Four samples collected from erratic pink granite boulders at an altitude of ~80 m above sea level yielded ages that range between 12.9 ± 1.1 ka and 9.4 ± 0.8 ka. As in other studies on Antarctic erratics, we have chosen to report the youngest erratic age (9.4 ± 0.8 ka) as the true age of deglaciation, which confirms a rapid thinning of the Marguerite Trough Ice Stream at the onset of Holocene. This result is consistent with other cosmogenic age data and other proxies (marine and lacustrine 14 C and optically stimulated luminescence) reported from nearby areas. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Horseshoe Island Ice Shelves Cambridge University Press Antarctic Antarctic Peninsula Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Horseshoe Island ENVELOPE(-67.189,-67.189,-67.836,-67.836) Antarctic Science 31 6 319 331 |
institution |
Open Polar |
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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 Çiner, Attila Yildirim, Cengiz Sarikaya, M. Akif Seong, Yeong Bae Yong Yu, Byung Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract The rapid warming observed in the western Antarctic Peninsula gives rise to a fast disintegration of ice shelves and thinning and retreat of marine-terminating continental glaciers, which is likely to raise global sea levels in the near future. In order to understand the contemporary changes in context and to provide constraints for hindcasting models, it is important to understand the Late Quaternary history of the region. Here, we build on previous work on the deglacial history of the western Antarctic Peninsula and we present four new cosmogenic 10 Be exposure ages from Horseshoe Island in Marguerite Bay, which has been suggested as a former location of very fast ice stream retreat. Four samples collected from erratic pink granite boulders at an altitude of ~80 m above sea level yielded ages that range between 12.9 ± 1.1 ka and 9.4 ± 0.8 ka. As in other studies on Antarctic erratics, we have chosen to report the youngest erratic age (9.4 ± 0.8 ka) as the true age of deglaciation, which confirms a rapid thinning of the Marguerite Trough Ice Stream at the onset of Holocene. This result is consistent with other cosmogenic age data and other proxies (marine and lacustrine 14 C and optically stimulated luminescence) reported from nearby areas. |
format |
Article in Journal/Newspaper |
author |
Çiner, Attila Yildirim, Cengiz Sarikaya, M. Akif Seong, Yeong Bae Yong Yu, Byung |
author_facet |
Çiner, Attila Yildirim, Cengiz Sarikaya, M. Akif Seong, Yeong Bae Yong Yu, Byung |
author_sort |
Çiner, Attila |
title |
Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene |
title_short |
Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene |
title_full |
Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene |
title_fullStr |
Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene |
title_full_unstemmed |
Cosmogenic 10 Be exposure dating of glacial erratics on Horseshoe Island in western Antarctic Peninsula confirms rapid deglaciation in the Early Holocene |
title_sort |
cosmogenic 10 be exposure dating of glacial erratics on horseshoe island in western antarctic peninsula confirms rapid deglaciation in the early holocene |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/s0954102019000439 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102019000439 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) ENVELOPE(-67.189,-67.189,-67.836,-67.836) |
geographic |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay Horseshoe Island |
geographic_facet |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay Horseshoe Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Horseshoe Island Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Horseshoe Island Ice Shelves |
op_source |
Antarctic Science volume 31, issue 6, page 319-331 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102019000439 |
container_title |
Antarctic Science |
container_volume |
31 |
container_issue |
6 |
container_start_page |
319 |
op_container_end_page |
331 |
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1792506884978114560 |