Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination
The past evolution of the Southern Ocean, one of the major components of the climatic system, is still a matter of debate. This study provides new insights into the deep Southern Ocean circulation based on the radiogenic isotopes and clay mineralogical signature of the terrigenous fractions transpor...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://research.vu.nl/en/publications/a9142190-3cf2-49fa-b55f-6b999faf93c4 https://doi.org/10.1016/j.quascirev.2019.106089 http://hdl.handle.net/1871.1/a9142190-3cf2-49fa-b55f-6b999faf93c4 https://research.vu.nl/ws/files/123509458/Radiogenic_isotopic_and_clay_mineralogical_signatures_of_terrigenous_particles_as_watermass_tracers.pdf http://www.scopus.com/inward/record.url?scp=85075573561&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85075573561&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/a9142190-3cf2-49fa-b55f-6b999faf93c4 2023-05-15T13:46:33+02:00 Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination Beny, F. Bout-Roumazeilles, V. Davies, G. R. Waelbroeck, C. Bory, A. Tribovillard, N. Delattre, M. Abraham, R. 2020-01-15 application/pdf https://research.vu.nl/en/publications/a9142190-3cf2-49fa-b55f-6b999faf93c4 https://doi.org/10.1016/j.quascirev.2019.106089 http://hdl.handle.net/1871.1/a9142190-3cf2-49fa-b55f-6b999faf93c4 https://research.vu.nl/ws/files/123509458/Radiogenic_isotopic_and_clay_mineralogical_signatures_of_terrigenous_particles_as_watermass_tracers.pdf http://www.scopus.com/inward/record.url?scp=85075573561&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85075573561&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Beny , F , Bout-Roumazeilles , V , Davies , G R , Waelbroeck , C , Bory , A , Tribovillard , N , Delattre , M & Abraham , R 2020 , ' Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers : New insights into South Atlantic deep circulation during the last termination ' , Quaternary Science Reviews , vol. 228 , 106089 , pp. 1-19 . https://doi.org/10.1016/j.quascirev.2019.106089 Clay mineralogy Grain size distribution Last deglaciation Paleoceanography Radiogenic isotopes South Atlantic Southern Ocean article 2020 ftvuamstcris https://doi.org/10.1016/j.quascirev.2019.106089 2022-01-17T13:34:18Z The past evolution of the Southern Ocean, one of the major components of the climatic system, is still a matter of debate. This study provides new insights into the deep Southern Ocean circulation based on the radiogenic isotopes and clay mineralogical signature of the terrigenous fractions transported by the main deep water masses to sediments recovered in core MD07-3076Q from the central South Atlantic. This approach successfully permits: (1) provenance identification of the various grain-size fractions (clay, cohesive silt and sortable silt); (2) assignment of each grain-size fraction to a specific water-mass; (3) reconstruction of past changes in the main deep water-mass pathways. These data document the evolution of deep-water masses in the South Atlantic Ocean during the last deglaciation. The Antarctic Bottom Water (AABW) speed and northward extension were maximum at the end of the Last Glacial Maximum (LGM), associated with strong bottom water production in the Weddell Sea, together with a vigorous Lower Circumpolar Deep Water (LCDW). In contrast the North Atlantic Deep Water (NADW) circulation was weaker than today. The onset of the deglaciation (from 17.5 ka to 15 ka, ∼Heinrich Stadial 1, HS 1) was marked by weakening and southerly retreat of the AABW and by an increase of mixing between AABW and LCDW. The speed of the AABW remained at its lowest during the Bølling Allerød (B/A) and the Younger Dryas (YD), and the LCDW slowed and retreated to the south, while the NADW progressively migrated southward, deepened, and strengthened between the beginning of the Bølling Allerød and the Holocene (from ∼15 to 10 ka). Article in Journal/Newspaper Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic South Atlantic Ocean Southern Ocean Weddell Sea Vrije Universiteit Amsterdam (VU): Research Portal Antarctic Southern Ocean The Antarctic Weddell Weddell Sea Quaternary Science Reviews 228 106089 |
institution |
Open Polar |
collection |
Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
Clay mineralogy Grain size distribution Last deglaciation Paleoceanography Radiogenic isotopes South Atlantic Southern Ocean |
spellingShingle |
Clay mineralogy Grain size distribution Last deglaciation Paleoceanography Radiogenic isotopes South Atlantic Southern Ocean Beny, F. Bout-Roumazeilles, V. Davies, G. R. Waelbroeck, C. Bory, A. Tribovillard, N. Delattre, M. Abraham, R. Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination |
topic_facet |
Clay mineralogy Grain size distribution Last deglaciation Paleoceanography Radiogenic isotopes South Atlantic Southern Ocean |
description |
The past evolution of the Southern Ocean, one of the major components of the climatic system, is still a matter of debate. This study provides new insights into the deep Southern Ocean circulation based on the radiogenic isotopes and clay mineralogical signature of the terrigenous fractions transported by the main deep water masses to sediments recovered in core MD07-3076Q from the central South Atlantic. This approach successfully permits: (1) provenance identification of the various grain-size fractions (clay, cohesive silt and sortable silt); (2) assignment of each grain-size fraction to a specific water-mass; (3) reconstruction of past changes in the main deep water-mass pathways. These data document the evolution of deep-water masses in the South Atlantic Ocean during the last deglaciation. The Antarctic Bottom Water (AABW) speed and northward extension were maximum at the end of the Last Glacial Maximum (LGM), associated with strong bottom water production in the Weddell Sea, together with a vigorous Lower Circumpolar Deep Water (LCDW). In contrast the North Atlantic Deep Water (NADW) circulation was weaker than today. The onset of the deglaciation (from 17.5 ka to 15 ka, ∼Heinrich Stadial 1, HS 1) was marked by weakening and southerly retreat of the AABW and by an increase of mixing between AABW and LCDW. The speed of the AABW remained at its lowest during the Bølling Allerød (B/A) and the Younger Dryas (YD), and the LCDW slowed and retreated to the south, while the NADW progressively migrated southward, deepened, and strengthened between the beginning of the Bølling Allerød and the Holocene (from ∼15 to 10 ka). |
format |
Article in Journal/Newspaper |
author |
Beny, F. Bout-Roumazeilles, V. Davies, G. R. Waelbroeck, C. Bory, A. Tribovillard, N. Delattre, M. Abraham, R. |
author_facet |
Beny, F. Bout-Roumazeilles, V. Davies, G. R. Waelbroeck, C. Bory, A. Tribovillard, N. Delattre, M. Abraham, R. |
author_sort |
Beny, F. |
title |
Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination |
title_short |
Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination |
title_full |
Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination |
title_fullStr |
Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination |
title_full_unstemmed |
Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:New insights into South Atlantic deep circulation during the last termination |
title_sort |
radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers:new insights into south atlantic deep circulation during the last termination |
publishDate |
2020 |
url |
https://research.vu.nl/en/publications/a9142190-3cf2-49fa-b55f-6b999faf93c4 https://doi.org/10.1016/j.quascirev.2019.106089 http://hdl.handle.net/1871.1/a9142190-3cf2-49fa-b55f-6b999faf93c4 https://research.vu.nl/ws/files/123509458/Radiogenic_isotopic_and_clay_mineralogical_signatures_of_terrigenous_particles_as_watermass_tracers.pdf http://www.scopus.com/inward/record.url?scp=85075573561&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85075573561&partnerID=8YFLogxK |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic South Atlantic Ocean Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic South Atlantic Ocean Southern Ocean Weddell Sea |
op_source |
Beny , F , Bout-Roumazeilles , V , Davies , G R , Waelbroeck , C , Bory , A , Tribovillard , N , Delattre , M & Abraham , R 2020 , ' Radiogenic isotopic and clay mineralogical signatures of terrigenous particles as water-mass tracers : New insights into South Atlantic deep circulation during the last termination ' , Quaternary Science Reviews , vol. 228 , 106089 , pp. 1-19 . https://doi.org/10.1016/j.quascirev.2019.106089 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2019.106089 |
container_title |
Quaternary Science Reviews |
container_volume |
228 |
container_start_page |
106089 |
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1766244048069197824 |