Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ...
The Cockburn Substage readvance marks the last major late-glacial advance of the northeast sector of the Laurentide Ice Sheet, but has been examined at only a handful of sites on Baffin Island. The causes of this abrupt, late reversal of retreat are still unclear, but greater chronological control m...
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Memorial University of Newfoundland
2022
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ftdatacite:10.48336/q6h5-p840 2023-06-11T04:09:31+02:00 Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ... Deering, Robert 2022 https://dx.doi.org/10.48336/q6h5-p840 https://research.library.mun.ca/15876/ en eng Memorial University of Newfoundland article-journal Text ScholarlyArticle 2022 ftdatacite https://doi.org/10.48336/q6h5-p840 2023-05-02T09:51:27Z The Cockburn Substage readvance marks the last major late-glacial advance of the northeast sector of the Laurentide Ice Sheet, but has been examined at only a handful of sites on Baffin Island. The causes of this abrupt, late reversal of retreat are still unclear, but greater chronological control may provide some insight. To date, the literature has focused on the large terminal moraines common in the region, providing a singular date of readvance (prior to c. 9.5-8.5 ka cal BP). In Frobisher Bay, the Cockburn Substage readvance and recession are marked by a series of end moraines spanning ~20 km on either side of the inner bay. New acoustic marine mapping reported here from inner Frobisher Bay (IFB) reveals five distinct seafloor ridges that roughly correspond to the onshore moraines, as well as two fields of DeGeer moraines. These differing types of ridges indicate that the style of ice retreat changed over time from an episodic recession to a more regular tidewater ice front retreat. Radiocarbon dated ... Text Arctic Baffin Island Baffin Frobisher Bay Ice Sheet Nunavut DataCite Metadata Store (German National Library of Science and Technology) Arctic Baffin Island Cockburn ENVELOPE(-62.295,-62.295,-64.018,-64.018) Frobisher Bay ENVELOPE(-66.581,-66.581,62.834,62.834) Inner Bay ENVELOPE(-37.967,-37.967,-54.017,-54.017) Nunavut |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
The Cockburn Substage readvance marks the last major late-glacial advance of the northeast sector of the Laurentide Ice Sheet, but has been examined at only a handful of sites on Baffin Island. The causes of this abrupt, late reversal of retreat are still unclear, but greater chronological control may provide some insight. To date, the literature has focused on the large terminal moraines common in the region, providing a singular date of readvance (prior to c. 9.5-8.5 ka cal BP). In Frobisher Bay, the Cockburn Substage readvance and recession are marked by a series of end moraines spanning ~20 km on either side of the inner bay. New acoustic marine mapping reported here from inner Frobisher Bay (IFB) reveals five distinct seafloor ridges that roughly correspond to the onshore moraines, as well as two fields of DeGeer moraines. These differing types of ridges indicate that the style of ice retreat changed over time from an episodic recession to a more regular tidewater ice front retreat. Radiocarbon dated ... |
format |
Text |
author |
Deering, Robert |
spellingShingle |
Deering, Robert Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ... |
author_facet |
Deering, Robert |
author_sort |
Deering, Robert |
title |
Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ... |
title_short |
Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ... |
title_full |
Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ... |
title_fullStr |
Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ... |
title_full_unstemmed |
Last ice sheet recession and submarine slope failures in a complex arctic inlet, Inner Frobisher Bay, Baffin Island, Nunavut ... |
title_sort |
last ice sheet recession and submarine slope failures in a complex arctic inlet, inner frobisher bay, baffin island, nunavut ... |
publisher |
Memorial University of Newfoundland |
publishDate |
2022 |
url |
https://dx.doi.org/10.48336/q6h5-p840 https://research.library.mun.ca/15876/ |
long_lat |
ENVELOPE(-62.295,-62.295,-64.018,-64.018) ENVELOPE(-66.581,-66.581,62.834,62.834) ENVELOPE(-37.967,-37.967,-54.017,-54.017) |
geographic |
Arctic Baffin Island Cockburn Frobisher Bay Inner Bay Nunavut |
geographic_facet |
Arctic Baffin Island Cockburn Frobisher Bay Inner Bay Nunavut |
genre |
Arctic Baffin Island Baffin Frobisher Bay Ice Sheet Nunavut |
genre_facet |
Arctic Baffin Island Baffin Frobisher Bay Ice Sheet Nunavut |
op_doi |
https://doi.org/10.48336/q6h5-p840 |
_version_ |
1768383457531002880 |