Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia
We describe glaci-lacustrine sediments buried under thick tills in Folldalen, south-east Norway, a site located close to the former centre of the Scandinavian Ice Sheet. Thus, the location implies that the ice sheet had melted when the sediments were deposited. The exposed ground was occupied by arc...
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Online Access: | https://hdl.handle.net/11250/3083823 https://doi.org/10.1016/j.quascirev.2023.108136 |
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ftunivbergen:oai:bora.uib.no:11250/3083823 2023-09-05T13:17:32+02:00 Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia Mangerud, Jan Alexanderson, Helena Birks, Hilary H Paus, Aage Perić, Zoran M. Svendsen, John Inge 2023 application/pdf https://hdl.handle.net/11250/3083823 https://doi.org/10.1016/j.quascirev.2023.108136 eng eng Elsevier urn:issn:0277-3791 https://hdl.handle.net/11250/3083823 https://doi.org/10.1016/j.quascirev.2023.108136 cristin:2159575 Quaternary Science Reviews. 2023, 311, 108136. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) 108136 Quaternary Science Reviews 311 Journal article Peer reviewed 2023 ftunivbergen https://doi.org/10.1016/j.quascirev.2023.108136 2023-08-16T23:07:22Z We describe glaci-lacustrine sediments buried under thick tills in Folldalen, south-east Norway, a site located close to the former centre of the Scandinavian Ice Sheet. Thus, the location implies that the ice sheet had melted when the sediments were deposited. The exposed ground was occupied by arctic vegetation. The best age estimate from 20 quartz luminescence dates is 55.6 ± 4.6 ka. Due to possible incomplete bleaching, an age in the younger part of the time range is most probable. We conclude that the Scandinavian Ice Sheet melted almost completely away early in Marine Isotope Stage (MIS) 3. Our review shows that the other Eurasian ice sheets also disappeared in that period. In north-western Germany, there were forests, containing warmth-demanding trees early in MIS 3, indicating a summer climate only slightly cooler than at present, thus supporting the evidence that the adjacent ice sheets had melted. The melting of the Eurasian ice sheets contributed to 50–100% of the sea-level rise from MIS 4 to MIS 3, implying that the much larger North American ice sheets did not melt much. In contrast, the Eurasian ice sheets contributed only about 30% to the sea-level drop from MIS 3 to MIS 2, meaning that the North American ice sheets during that period expanded strongly. publishedVersion Article in Journal/Newspaper Arctic Ice Sheet University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Norway Folldalen ENVELOPE(9.123,9.123,62.929,62.929) Quaternary Science Reviews 311 108136 |
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Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
We describe glaci-lacustrine sediments buried under thick tills in Folldalen, south-east Norway, a site located close to the former centre of the Scandinavian Ice Sheet. Thus, the location implies that the ice sheet had melted when the sediments were deposited. The exposed ground was occupied by arctic vegetation. The best age estimate from 20 quartz luminescence dates is 55.6 ± 4.6 ka. Due to possible incomplete bleaching, an age in the younger part of the time range is most probable. We conclude that the Scandinavian Ice Sheet melted almost completely away early in Marine Isotope Stage (MIS) 3. Our review shows that the other Eurasian ice sheets also disappeared in that period. In north-western Germany, there were forests, containing warmth-demanding trees early in MIS 3, indicating a summer climate only slightly cooler than at present, thus supporting the evidence that the adjacent ice sheets had melted. The melting of the Eurasian ice sheets contributed to 50–100% of the sea-level rise from MIS 4 to MIS 3, implying that the much larger North American ice sheets did not melt much. In contrast, the Eurasian ice sheets contributed only about 30% to the sea-level drop from MIS 3 to MIS 2, meaning that the North American ice sheets during that period expanded strongly. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Mangerud, Jan Alexanderson, Helena Birks, Hilary H Paus, Aage Perić, Zoran M. Svendsen, John Inge |
spellingShingle |
Mangerud, Jan Alexanderson, Helena Birks, Hilary H Paus, Aage Perić, Zoran M. Svendsen, John Inge Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia |
author_facet |
Mangerud, Jan Alexanderson, Helena Birks, Hilary H Paus, Aage Perić, Zoran M. Svendsen, John Inge |
author_sort |
Mangerud, Jan |
title |
Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia |
title_short |
Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia |
title_full |
Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia |
title_fullStr |
Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia |
title_full_unstemmed |
Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia |
title_sort |
did the eurasian ice sheets melt completely in early marine isotope stage 3? new evidence from norway and a synthesis for eurasia |
publisher |
Elsevier |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3083823 https://doi.org/10.1016/j.quascirev.2023.108136 |
long_lat |
ENVELOPE(9.123,9.123,62.929,62.929) |
geographic |
Arctic Norway Folldalen |
geographic_facet |
Arctic Norway Folldalen |
genre |
Arctic Ice Sheet |
genre_facet |
Arctic Ice Sheet |
op_source |
108136 Quaternary Science Reviews 311 |
op_relation |
urn:issn:0277-3791 https://hdl.handle.net/11250/3083823 https://doi.org/10.1016/j.quascirev.2023.108136 cristin:2159575 Quaternary Science Reviews. 2023, 311, 108136. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2023 The Author(s) |
op_doi |
https://doi.org/10.1016/j.quascirev.2023.108136 |
container_title |
Quaternary Science Reviews |
container_volume |
311 |
container_start_page |
108136 |
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1776198669682343936 |