The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada
Abstract The behaviour of ice sheets as they retreated from their Last Glacial Maximum (LGM) positions provides insights into Lateglacial and early Holocene ice‐sheet dynamics and climate change. The pattern of deglaciation of the Laurentide Ice Sheet (LIS) in arctic fiord landscapes can now be well...
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crwiley:10.1002/jqs.1057 2024-10-13T14:05:06+00:00 The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada Briner, Jason P. Overeem, Irina Miller, Gifford Finkel, Robert 2007 http://dx.doi.org/10.1002/jqs.1057 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1057 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1057 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 22, issue 3, page 223-232 ISSN 0267-8179 1099-1417 journal-article 2007 crwiley https://doi.org/10.1002/jqs.1057 2024-09-17T04:51:01Z Abstract The behaviour of ice sheets as they retreated from their Last Glacial Maximum (LGM) positions provides insights into Lateglacial and early Holocene ice‐sheet dynamics and climate change. The pattern of deglaciation of the Laurentide Ice Sheet (LIS) in arctic fiord landscapes can now be well dated using cosmogenic exposure dating. We use cosmogenic exposure and radiocarbon ages to constrain the deglaciation history of Clyde Inlet, a 120 km long fiord on northeastern Baffin Island. The LIS reached the continental shelf during the LGM, retreated from the coastal lowlands by 12.5 ± 0.7 ka ( n = 3), and from the fiord mouth by 11.7 ± 2.2 ka ( n = 4). Rapid retreat from the outer fiord occurred 10.3 ± 1.3 ka ( n = 6), with the terminus reaching the inner fiord shortly after 9.4 ka ( n = 2), where several moraine systems were deposited between ca. 9.4 and ca. 8.4 ka. These moraines represent fluctuations of the LIS during the warmest summers since the last interglaciation, and this suggests that the ice sheet was responding to increased snowfall. Before retreating from the head of Clyde Inlet, the LIS margin fluctuated at least twice between ca. 7.9 and ca. 8.5 ka, possibly in response to the 8.2 ka cold event. Copyright © 2006 John Wiley & Sons, Ltd. Article in Journal/Newspaper Arctic Baffin Island Baffin Climate change Clyde Inlet Ice Sheet Wiley Online Library Arctic Baffin Island Canada Clyde Inlet ENVELOPE(-69.492,-69.492,70.199,70.199) Journal of Quaternary Science 22 3 223 232 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The behaviour of ice sheets as they retreated from their Last Glacial Maximum (LGM) positions provides insights into Lateglacial and early Holocene ice‐sheet dynamics and climate change. The pattern of deglaciation of the Laurentide Ice Sheet (LIS) in arctic fiord landscapes can now be well dated using cosmogenic exposure dating. We use cosmogenic exposure and radiocarbon ages to constrain the deglaciation history of Clyde Inlet, a 120 km long fiord on northeastern Baffin Island. The LIS reached the continental shelf during the LGM, retreated from the coastal lowlands by 12.5 ± 0.7 ka ( n = 3), and from the fiord mouth by 11.7 ± 2.2 ka ( n = 4). Rapid retreat from the outer fiord occurred 10.3 ± 1.3 ka ( n = 6), with the terminus reaching the inner fiord shortly after 9.4 ka ( n = 2), where several moraine systems were deposited between ca. 9.4 and ca. 8.4 ka. These moraines represent fluctuations of the LIS during the warmest summers since the last interglaciation, and this suggests that the ice sheet was responding to increased snowfall. Before retreating from the head of Clyde Inlet, the LIS margin fluctuated at least twice between ca. 7.9 and ca. 8.5 ka, possibly in response to the 8.2 ka cold event. Copyright © 2006 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Briner, Jason P. Overeem, Irina Miller, Gifford Finkel, Robert |
spellingShingle |
Briner, Jason P. Overeem, Irina Miller, Gifford Finkel, Robert The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada |
author_facet |
Briner, Jason P. Overeem, Irina Miller, Gifford Finkel, Robert |
author_sort |
Briner, Jason P. |
title |
The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada |
title_short |
The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada |
title_full |
The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada |
title_fullStr |
The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada |
title_full_unstemmed |
The deglaciation of Clyde Inlet, northeastern Baffin Island, Arctic Canada |
title_sort |
deglaciation of clyde inlet, northeastern baffin island, arctic canada |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1002/jqs.1057 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1057 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1057 |
long_lat |
ENVELOPE(-69.492,-69.492,70.199,70.199) |
geographic |
Arctic Baffin Island Canada Clyde Inlet |
geographic_facet |
Arctic Baffin Island Canada Clyde Inlet |
genre |
Arctic Baffin Island Baffin Climate change Clyde Inlet Ice Sheet |
genre_facet |
Arctic Baffin Island Baffin Climate change Clyde Inlet Ice Sheet |
op_source |
Journal of Quaternary Science volume 22, issue 3, page 223-232 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1057 |
container_title |
Journal of Quaternary Science |
container_volume |
22 |
container_issue |
3 |
container_start_page |
223 |
op_container_end_page |
232 |
_version_ |
1812810982309756928 |