Only 5 southern Greenland shelf edge glaciations since the early Pliocene
Much uncertainty exists about the history of the Greenland Ice Sheet (GIS), particularly as to the frequency of extreme shelf edge glaciations. Because the last glaciation removed most of the record of earlier GIS extent on land and shelf exploration of the older GIS glacial record requires the use...
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ftpubmed:oai:pubmedcentral.nih.gov:3662008 2023-05-15T16:23:43+02:00 Only 5 southern Greenland shelf edge glaciations since the early Pliocene Nielsen, Tove Kuijpers, Antoon 2013-05-23 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3662008 http://www.ncbi.nlm.nih.gov/pubmed/23698710 https://doi.org/10.1038/srep01875 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3662008 http://www.ncbi.nlm.nih.gov/pubmed/23698710 http://dx.doi.org/10.1038/srep01875 Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ CC-BY-NC-ND Article Text 2013 ftpubmed https://doi.org/10.1038/srep01875 2013-09-05T00:08:49Z Much uncertainty exists about the history of the Greenland Ice Sheet (GIS), particularly as to the frequency of extreme shelf edge glaciations. Because the last glaciation removed most of the record of earlier GIS extent on land and shelf exploration of the older GIS glacial record requires the use of deeper marine archives. Here we present seismic evidence for the frequency of extreme shelf edge glaciations offshore southwest Greenland. Our findings reveal that since the GIS formation only 5 glaciations were characterized by an ice sheet covering the entire shelf of southern Greenland. We estimate an age of around 4.5 million years (my) for the oldest episode and found that such extreme GIS expansions may have occur here only 3 times within the past c. 1.5 my. We thus conclude that the first large shelf edge glaciation of southern Greenland did occur prior to the Pliocene warmth epoch. Text Greenland Ice Sheet PubMed Central (PMC) Greenland Scientific Reports 3 1 |
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Article Nielsen, Tove Kuijpers, Antoon Only 5 southern Greenland shelf edge glaciations since the early Pliocene |
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Article |
description |
Much uncertainty exists about the history of the Greenland Ice Sheet (GIS), particularly as to the frequency of extreme shelf edge glaciations. Because the last glaciation removed most of the record of earlier GIS extent on land and shelf exploration of the older GIS glacial record requires the use of deeper marine archives. Here we present seismic evidence for the frequency of extreme shelf edge glaciations offshore southwest Greenland. Our findings reveal that since the GIS formation only 5 glaciations were characterized by an ice sheet covering the entire shelf of southern Greenland. We estimate an age of around 4.5 million years (my) for the oldest episode and found that such extreme GIS expansions may have occur here only 3 times within the past c. 1.5 my. We thus conclude that the first large shelf edge glaciation of southern Greenland did occur prior to the Pliocene warmth epoch. |
format |
Text |
author |
Nielsen, Tove Kuijpers, Antoon |
author_facet |
Nielsen, Tove Kuijpers, Antoon |
author_sort |
Nielsen, Tove |
title |
Only 5 southern Greenland shelf edge glaciations since the early Pliocene |
title_short |
Only 5 southern Greenland shelf edge glaciations since the early Pliocene |
title_full |
Only 5 southern Greenland shelf edge glaciations since the early Pliocene |
title_fullStr |
Only 5 southern Greenland shelf edge glaciations since the early Pliocene |
title_full_unstemmed |
Only 5 southern Greenland shelf edge glaciations since the early Pliocene |
title_sort |
only 5 southern greenland shelf edge glaciations since the early pliocene |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3662008 http://www.ncbi.nlm.nih.gov/pubmed/23698710 https://doi.org/10.1038/srep01875 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3662008 http://www.ncbi.nlm.nih.gov/pubmed/23698710 http://dx.doi.org/10.1038/srep01875 |
op_rights |
Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1038/srep01875 |
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Scientific Reports |
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3 |
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1 |
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1766011976722415616 |