A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka
Volcanic ash preserved in marine sediment sequences is key for independent synchronization of palaeoclimate records within and across different climate archives. Here we present a continuous tephrostratigraphic record from the Labrador Sea, spanning the last 65–5 ka, an area and time period that has...
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Online Access: | https://hdl.handle.net/11250/2755920 https://doi.org/10.1002/jqs.3241 |
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ftnorce:oai:norceresearch.brage.unit.no:11250/2755920 2023-05-15T16:03:48+02:00 A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka Rutledal, Sunniva Haflidason, Haflidi Berben, Sarah Miche Patricia Griem, Lisa Jansen, Eystein 2020 application/pdf https://hdl.handle.net/11250/2755920 https://doi.org/10.1002/jqs.3241 eng eng Norges forskningsråd: 255415 EC/FP7/610055 Journal of Quaternary Science. 2020, 35 (7), 855-868. urn:issn:0267-8179 https://hdl.handle.net/11250/2755920 https://doi.org/10.1002/jqs.3241 cristin:1858842 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020, Authors CC-BY Journal of Quaternary Science 35 7 855-868 Journal article Peer reviewed 2020 ftnorce https://doi.org/10.1002/jqs.3241 2022-10-13T05:50:32Z Volcanic ash preserved in marine sediment sequences is key for independent synchronization of palaeoclimate records within and across different climate archives. Here we present a continuous tephrostratigraphic record from the Labrador Sea, spanning the last 65–5 ka, an area and time period that has not been investigated in detail within the established North Atlantic tephra framework. We investigated marine sediment core GS16‐204‐22CC for increased tephra occurrences and geochemically analysed the major element composition of tephra shards to identify their source volcano(es). In total we observed eight tephra zones, of which five concentration peaks show isochronous features that can be used as independent tie‐points in future studies. The main transport mechanism of tephra shards to the site was near‐instantaneous deposition by drifting of sea ice along the East Greenland Current. Our results show that the Icelandic Veidivötn volcanic system was the dominant source of tephra material, especially between late Marine Isotope Stage (MIS) 4 and early MIS 3. The Veidivötn system generated volcanic eruptions in cycles of ca. 3–5 ka. We speculate that the quantity of tephra delivered to the Labrador Sea was a result of variable Icelandic ice volume and/or changes in the transportation pathway towards the Labrador Sea. publishedVersion Article in Journal/Newspaper East Greenland east greenland current Greenland Labrador Sea North Atlantic Sea ice NORCE vitenarkiv (Norwegian Research Centre) Greenland Journal of Quaternary Science 35 7 855 868 |
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Open Polar |
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NORCE vitenarkiv (Norwegian Research Centre) |
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ftnorce |
language |
English |
description |
Volcanic ash preserved in marine sediment sequences is key for independent synchronization of palaeoclimate records within and across different climate archives. Here we present a continuous tephrostratigraphic record from the Labrador Sea, spanning the last 65–5 ka, an area and time period that has not been investigated in detail within the established North Atlantic tephra framework. We investigated marine sediment core GS16‐204‐22CC for increased tephra occurrences and geochemically analysed the major element composition of tephra shards to identify their source volcano(es). In total we observed eight tephra zones, of which five concentration peaks show isochronous features that can be used as independent tie‐points in future studies. The main transport mechanism of tephra shards to the site was near‐instantaneous deposition by drifting of sea ice along the East Greenland Current. Our results show that the Icelandic Veidivötn volcanic system was the dominant source of tephra material, especially between late Marine Isotope Stage (MIS) 4 and early MIS 3. The Veidivötn system generated volcanic eruptions in cycles of ca. 3–5 ka. We speculate that the quantity of tephra delivered to the Labrador Sea was a result of variable Icelandic ice volume and/or changes in the transportation pathway towards the Labrador Sea. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Rutledal, Sunniva Haflidason, Haflidi Berben, Sarah Miche Patricia Griem, Lisa Jansen, Eystein |
spellingShingle |
Rutledal, Sunniva Haflidason, Haflidi Berben, Sarah Miche Patricia Griem, Lisa Jansen, Eystein A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka |
author_facet |
Rutledal, Sunniva Haflidason, Haflidi Berben, Sarah Miche Patricia Griem, Lisa Jansen, Eystein |
author_sort |
Rutledal, Sunniva |
title |
A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka |
title_short |
A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka |
title_full |
A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka |
title_fullStr |
A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka |
title_full_unstemmed |
A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka |
title_sort |
continuous tephrostratigraphic record from the labrador sea spanning the last 65 ka |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2755920 https://doi.org/10.1002/jqs.3241 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland east greenland current Greenland Labrador Sea North Atlantic Sea ice |
genre_facet |
East Greenland east greenland current Greenland Labrador Sea North Atlantic Sea ice |
op_source |
Journal of Quaternary Science 35 7 855-868 |
op_relation |
Norges forskningsråd: 255415 EC/FP7/610055 Journal of Quaternary Science. 2020, 35 (7), 855-868. urn:issn:0267-8179 https://hdl.handle.net/11250/2755920 https://doi.org/10.1002/jqs.3241 cristin:1858842 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020, Authors |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/jqs.3241 |
container_title |
Journal of Quaternary Science |
container_volume |
35 |
container_issue |
7 |
container_start_page |
855 |
op_container_end_page |
868 |
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1766399494829637632 |