Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka
Abstract A deep-sea sediment core covering the last 20 ka and located between the Polar and the Arctic fronts in the marginal ice zone (MIZ) of the central Fram Strait has been investigated for changes in paleoceanography and calcium carbonate preservation. The reconstruction is based on the distrib...
Published in: | Quaternary Research |
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Cambridge University Press (CUP)
2012
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Online Access: | http://dx.doi.org/10.1016/j.yqres.2012.07.006 http://api.elsevier.com/content/article/PII:S0033589412000865?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000865?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008796 |
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crcambridgeupr:10.1016/j.yqres.2012.07.006 2024-06-09T07:43:49+00:00 Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka Zamelczyk, Katarzyna Rasmussen, Tine L. Husum, Katrine Haflidason, Haflidi de Vernal, Anne Ravna, Erling Krogh Hald, Morten Hillaire-Marcel, Claude 2012 http://dx.doi.org/10.1016/j.yqres.2012.07.006 http://api.elsevier.com/content/article/PII:S0033589412000865?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000865?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008796 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 78, issue 3, page 405-416 ISSN 0033-5894 1096-0287 journal-article 2012 crcambridgeupr https://doi.org/10.1016/j.yqres.2012.07.006 2024-05-15T13:03:04Z Abstract A deep-sea sediment core covering the last 20 ka and located between the Polar and the Arctic fronts in the marginal ice zone (MIZ) of the central Fram Strait has been investigated for changes in paleoceanography and calcium carbonate preservation. The reconstruction is based on the distribution patterns of planktic foraminifera, mean shell weight and the degree of fragmentation of their shells, stable isotopes and other geochemical and sedimentological data. The results show that the planktic foraminifera shells are poorly preserved throughout most of the record. Only the intervals comprising the early Holocene from 10.8 to ~ 8 cal ka BP and the last 800 yr show improved preservation of CaCO 3 . The dissolution correlated with the extent of Arctic water and the associated marginal ice zone (MIZ) and high organic productivity. Dissolution of planktic foraminifera is generally high during the late deglaciation, mid and late Holocene prior to ~ 800 cal yr BP. The abundance of small subpolar species increases in the surface sediments dating from the last century, which could be interpreted as a large and significant surface water warming. However, this apparent high-magnitude warming seems to be overestimated due to preservation changes in the youngest sediments. Article in Journal/Newspaper Arctic Foraminifera* Fram Strait Cambridge University Press Arctic Quaternary Research 78 3 405 416 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract A deep-sea sediment core covering the last 20 ka and located between the Polar and the Arctic fronts in the marginal ice zone (MIZ) of the central Fram Strait has been investigated for changes in paleoceanography and calcium carbonate preservation. The reconstruction is based on the distribution patterns of planktic foraminifera, mean shell weight and the degree of fragmentation of their shells, stable isotopes and other geochemical and sedimentological data. The results show that the planktic foraminifera shells are poorly preserved throughout most of the record. Only the intervals comprising the early Holocene from 10.8 to ~ 8 cal ka BP and the last 800 yr show improved preservation of CaCO 3 . The dissolution correlated with the extent of Arctic water and the associated marginal ice zone (MIZ) and high organic productivity. Dissolution of planktic foraminifera is generally high during the late deglaciation, mid and late Holocene prior to ~ 800 cal yr BP. The abundance of small subpolar species increases in the surface sediments dating from the last century, which could be interpreted as a large and significant surface water warming. However, this apparent high-magnitude warming seems to be overestimated due to preservation changes in the youngest sediments. |
format |
Article in Journal/Newspaper |
author |
Zamelczyk, Katarzyna Rasmussen, Tine L. Husum, Katrine Haflidason, Haflidi de Vernal, Anne Ravna, Erling Krogh Hald, Morten Hillaire-Marcel, Claude |
spellingShingle |
Zamelczyk, Katarzyna Rasmussen, Tine L. Husum, Katrine Haflidason, Haflidi de Vernal, Anne Ravna, Erling Krogh Hald, Morten Hillaire-Marcel, Claude Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka |
author_facet |
Zamelczyk, Katarzyna Rasmussen, Tine L. Husum, Katrine Haflidason, Haflidi de Vernal, Anne Ravna, Erling Krogh Hald, Morten Hillaire-Marcel, Claude |
author_sort |
Zamelczyk, Katarzyna |
title |
Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka |
title_short |
Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka |
title_full |
Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka |
title_fullStr |
Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka |
title_full_unstemmed |
Paleoceanographic changes and calcium carbonate dissolution in the central Fram Strait during the last 20 ka |
title_sort |
paleoceanographic changes and calcium carbonate dissolution in the central fram strait during the last 20 ka |
publisher |
Cambridge University Press (CUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1016/j.yqres.2012.07.006 http://api.elsevier.com/content/article/PII:S0033589412000865?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000865?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008796 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Foraminifera* Fram Strait |
genre_facet |
Arctic Foraminifera* Fram Strait |
op_source |
Quaternary Research volume 78, issue 3, page 405-416 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2012.07.006 |
container_title |
Quaternary Research |
container_volume |
78 |
container_issue |
3 |
container_start_page |
405 |
op_container_end_page |
416 |
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1801372671560122368 |