Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain
Here we present the first compilation of sediment volumes, sedimentation rates, and chronology of Quaternary sediment packages along the entire marine margin of the Eurasian ice sheets (EurIS; British–Irish, Kara–Barents Sea–Svalbard, and Fennoscandian). This compilation allows for a subdivision of...
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Geological Society of America
2021
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Online Access: | https://hdl.handle.net/11250/2988281 https://doi.org/10.1130/G48106.1 |
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ftunivbergen:oai:bora.uib.no:11250/2988281 2023-05-15T15:38:46+02:00 Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain Hjelstuen, Berit Oline Blihovde Sejrup, Hans Petter 2021 application/pdf https://hdl.handle.net/11250/2988281 https://doi.org/10.1130/G48106.1 eng eng Geological Society of America urn:issn:0091-7613 https://hdl.handle.net/11250/2988281 https://doi.org/10.1130/G48106.1 cristin:1984294 Geology. 2021, 49 (3), 346-351. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors Geology 346-351 49 3 Journal article Peer reviewed 2021 ftunivbergen https://doi.org/10.1130/G48106.1 2023-03-14T17:43:50Z Here we present the first compilation of sediment volumes, sedimentation rates, and chronology of Quaternary sediment packages along the entire marine margin of the Eurasian ice sheets (EurIS; British–Irish, Kara–Barents Sea–Svalbard, and Fennoscandian). This compilation allows for a subdivision of the EurIS development into three phases (2.6–1.5 Ma, 1.5–0.78 Ma, and 0.78–0 Ma). At the start of the Quaternary, sedimentation rates increased, relative to pre-Quaternary rates, by an order of magnitude. This abruptness in rate change excludes tectonic raising of landmasses as the main factor, but more likely reflects climate change through increased glacial erosion. The sediment distribution data suggest that the Kara–Barents Sea–Svalbard Ice Sheet (KBSIS) already was quite large at the beginning of the Quaternary, and well before 1.5 Ma it extended to the shelf edge and coalesced with the Fennoscandian Ice Sheet (FIS), which prior to 1.5 Ma most likely was located near the coast. Large ice streams and intense glacial erosion characterized the KBSIS in the 1.5–0.78 Ma time period, whereas the FIS at that time extended farther out on the continental shelf. After 0.78 Ma, a north-south change in EurIS development occurred. In the FIS and the British–Irish Ice Sheet (BIIS), large ice streams developed and shelf-edge glaciations occurred nearly 1 m.y. later compared to the KBSIS. The FIS and BIIS also repetitively coalesced in the North Sea. A significant drop in sediment input along the KBSIS marine margin, to the lowest Quaternary level, suggests a less erosive KBSIS. publishedVersion Article in Journal/Newspaper Barents Sea Fennoscandian Ice Sheet Svalbard University of Bergen: Bergen Open Research Archive (BORA-UiB) Barents Sea Svalbard Geology 49 3 346 351 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Here we present the first compilation of sediment volumes, sedimentation rates, and chronology of Quaternary sediment packages along the entire marine margin of the Eurasian ice sheets (EurIS; British–Irish, Kara–Barents Sea–Svalbard, and Fennoscandian). This compilation allows for a subdivision of the EurIS development into three phases (2.6–1.5 Ma, 1.5–0.78 Ma, and 0.78–0 Ma). At the start of the Quaternary, sedimentation rates increased, relative to pre-Quaternary rates, by an order of magnitude. This abruptness in rate change excludes tectonic raising of landmasses as the main factor, but more likely reflects climate change through increased glacial erosion. The sediment distribution data suggest that the Kara–Barents Sea–Svalbard Ice Sheet (KBSIS) already was quite large at the beginning of the Quaternary, and well before 1.5 Ma it extended to the shelf edge and coalesced with the Fennoscandian Ice Sheet (FIS), which prior to 1.5 Ma most likely was located near the coast. Large ice streams and intense glacial erosion characterized the KBSIS in the 1.5–0.78 Ma time period, whereas the FIS at that time extended farther out on the continental shelf. After 0.78 Ma, a north-south change in EurIS development occurred. In the FIS and the British–Irish Ice Sheet (BIIS), large ice streams developed and shelf-edge glaciations occurred nearly 1 m.y. later compared to the KBSIS. The FIS and BIIS also repetitively coalesced in the North Sea. A significant drop in sediment input along the KBSIS marine margin, to the lowest Quaternary level, suggests a less erosive KBSIS. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hjelstuen, Berit Oline Blihovde Sejrup, Hans Petter |
spellingShingle |
Hjelstuen, Berit Oline Blihovde Sejrup, Hans Petter Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain |
author_facet |
Hjelstuen, Berit Oline Blihovde Sejrup, Hans Petter |
author_sort |
Hjelstuen, Berit Oline Blihovde |
title |
Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain |
title_short |
Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain |
title_full |
Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain |
title_fullStr |
Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain |
title_full_unstemmed |
Latitudinal variability in the Quaternary development of the Eurasian ice sheets—Evidence from the marine domain |
title_sort |
latitudinal variability in the quaternary development of the eurasian ice sheets—evidence from the marine domain |
publisher |
Geological Society of America |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2988281 https://doi.org/10.1130/G48106.1 |
geographic |
Barents Sea Svalbard |
geographic_facet |
Barents Sea Svalbard |
genre |
Barents Sea Fennoscandian Ice Sheet Svalbard |
genre_facet |
Barents Sea Fennoscandian Ice Sheet Svalbard |
op_source |
Geology 346-351 49 3 |
op_relation |
urn:issn:0091-7613 https://hdl.handle.net/11250/2988281 https://doi.org/10.1130/G48106.1 cristin:1984294 Geology. 2021, 49 (3), 346-351. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors |
op_doi |
https://doi.org/10.1130/G48106.1 |
container_title |
Geology |
container_volume |
49 |
container_issue |
3 |
container_start_page |
346 |
op_container_end_page |
351 |
_version_ |
1766370081546174464 |