Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia
Sediment cores from lakes Kormovoye and Oshkoty in the glaciated region of the Pechora Lowland, northern Russia, reveal sediment gravity flow deposits overlain by lacustrine mud and gyttja. The sediments were deposited mainly during melting of buried glacier ice beneath the lakes. In Lake Kormovoye,...
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Online Access: | https://hdl.handle.net/1956/377 https://doi.org/10.1002/jqs.788 |
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ftunivbergen:oai:bora.uib.no:1956/377 2023-05-15T16:22:02+02:00 Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia Henriksen, Mona Mangerud, Jan Matiouchkov, Alexei Paus, Aage Svendsen, John-Inge 2003 71283 bytes 137 bytes 997916 bytes text/plain application/pdf https://hdl.handle.net/1956/377 https://doi.org/10.1002/jqs.788 eng eng Wiley urn:issn:0267-8179 https://hdl.handle.net/1956/377 https://doi.org/10.1002/jqs.788 Copyright 2003 John Wiley & Sons, Ltd. Dead ice Lake sediments Deglaciation Weichselian Peer reviewed Journal article 2003 ftunivbergen https://doi.org/10.1002/jqs.788 2023-03-14T17:39:18Z Sediment cores from lakes Kormovoye and Oshkoty in the glaciated region of the Pechora Lowland, northern Russia, reveal sediment gravity flow deposits overlain by lacustrine mud and gyttja. The sediments were deposited mainly during melting of buried glacier ice beneath the lakes. In Lake Kormovoye, differential melting of dead ice caused the lake bottom to subside at different places at different times, resulting in sedimentation and erosion occurring only some few metres apart and at shifting locations, as further melting caused inversion of the lake bottom. Basal radiocarbon dates from the two lakes, ranging between 13 and 9 ka, match with basal dates from other lakes in the Pechora Lowland as well as melting of ice-wedges. This indicates that buried glacier ice has survived for ca. 80 000 years from the last glaciation of this area at 90 ka until about 13 ka when a warmer climate caused melting of permafrost and buried glacier ice, forming numerous lakes and a fresh-looking glacial landscape. Article in Journal/Newspaper glacier Ice Pechora permafrost wedge* University of Bergen: Bergen Open Research Archive (BORA-UiB) Journal of Quaternary Science 18 7 663 679 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
Dead ice Lake sediments Deglaciation Weichselian |
spellingShingle |
Dead ice Lake sediments Deglaciation Weichselian Henriksen, Mona Mangerud, Jan Matiouchkov, Alexei Paus, Aage Svendsen, John-Inge Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia |
topic_facet |
Dead ice Lake sediments Deglaciation Weichselian |
description |
Sediment cores from lakes Kormovoye and Oshkoty in the glaciated region of the Pechora Lowland, northern Russia, reveal sediment gravity flow deposits overlain by lacustrine mud and gyttja. The sediments were deposited mainly during melting of buried glacier ice beneath the lakes. In Lake Kormovoye, differential melting of dead ice caused the lake bottom to subside at different places at different times, resulting in sedimentation and erosion occurring only some few metres apart and at shifting locations, as further melting caused inversion of the lake bottom. Basal radiocarbon dates from the two lakes, ranging between 13 and 9 ka, match with basal dates from other lakes in the Pechora Lowland as well as melting of ice-wedges. This indicates that buried glacier ice has survived for ca. 80 000 years from the last glaciation of this area at 90 ka until about 13 ka when a warmer climate caused melting of permafrost and buried glacier ice, forming numerous lakes and a fresh-looking glacial landscape. |
format |
Article in Journal/Newspaper |
author |
Henriksen, Mona Mangerud, Jan Matiouchkov, Alexei Paus, Aage Svendsen, John-Inge |
author_facet |
Henriksen, Mona Mangerud, Jan Matiouchkov, Alexei Paus, Aage Svendsen, John-Inge |
author_sort |
Henriksen, Mona |
title |
Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia |
title_short |
Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia |
title_full |
Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia |
title_fullStr |
Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia |
title_full_unstemmed |
Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia |
title_sort |
lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern russia |
publisher |
Wiley |
publishDate |
2003 |
url |
https://hdl.handle.net/1956/377 https://doi.org/10.1002/jqs.788 |
genre |
glacier Ice Pechora permafrost wedge* |
genre_facet |
glacier Ice Pechora permafrost wedge* |
op_relation |
urn:issn:0267-8179 https://hdl.handle.net/1956/377 https://doi.org/10.1002/jqs.788 |
op_rights |
Copyright 2003 John Wiley & Sons, Ltd. |
op_doi |
https://doi.org/10.1002/jqs.788 |
container_title |
Journal of Quaternary Science |
container_volume |
18 |
container_issue |
7 |
container_start_page |
663 |
op_container_end_page |
679 |
_version_ |
1766010006114664448 |