Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments
International audience In order to investigate North Atlantic Deep Water (NADW) dynamics and variability during the last glacial stage, a very high resolution multiproxy analysis of the detrital fraction of sediments deposited during Heinrich event 4 and Dansgaard-Oeschger cycles 8 and 7 has been co...
Published in: | Geochemistry, Geophysics, Geosystems |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-03118259 https://hal.science/hal-03118259/document https://hal.science/hal-03118259/file/2005GC001070.pdf https://doi.org/10.1029/2005GC001070 |
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ftceafr:oai:HAL:hal-03118259v1 2024-09-15T18:19:01+00:00 Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments Ballini, M. Kissel, C. Colin, C. Richter, T. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Climat et Magnétisme (CLIMAG) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Royal Netherlands Institute for Sea Research (NIOZ) 2006 https://hal.science/hal-03118259 https://hal.science/hal-03118259/document https://hal.science/hal-03118259/file/2005GC001070.pdf https://doi.org/10.1029/2005GC001070 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2005GC001070 hal-03118259 https://hal.science/hal-03118259 https://hal.science/hal-03118259/document https://hal.science/hal-03118259/file/2005GC001070.pdf doi:10.1029/2005GC001070 info:eu-repo/semantics/OpenAccess EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-03118259 Geochemistry, Geophysics, Geosystems, 2006, 7 (2), ⟨10.1029/2005GC001070⟩ clay minerals bottom water circulation magnetic properties glacial period Dansgaard-Oeschger cycles North Atlantic [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2006 ftceafr https://doi.org/10.1029/2005GC001070 2024-07-22T13:16:33Z International audience In order to investigate North Atlantic Deep Water (NADW) dynamics and variability during the last glacial stage, a very high resolution multiproxy analysis of the detrital fraction of sediments deposited during Heinrich event 4 and Dansgaard-Oeschger cycles 8 and 7 has been conducted on three deep-sea cores. These cores are distributed along the path of the North Atlantic Deep Water from the Faeroe Shetland Channel to the Reykjanes ridge and the Irminger basin. The concentration in fine-grained magnetites, the Ti-content, and the smectite percentage within the clay minerals show similar and coeval fluctuations at each site and are comparable from one site to the other. This is the imprint of the detrital fraction originating from the northern basaltic provinces and transported to the studied sites. The average grain size in the fine fraction indicates a transport by deep-sea currents. Therefore the observed fluctuations illustrate changes in the vigor of the bottom currents associated with the NADW with weak currents during cold periods (Heinrich 4 and stadials) and reactivation of the bottom circulation during interstadials. Article in Journal/Newspaper NADW North Atlantic Deep Water North Atlantic HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Geochemistry, Geophysics, Geosystems 7 2 n/a n/a |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
clay minerals bottom water circulation magnetic properties glacial period Dansgaard-Oeschger cycles North Atlantic [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
clay minerals bottom water circulation magnetic properties glacial period Dansgaard-Oeschger cycles North Atlantic [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Ballini, M. Kissel, C. Colin, C. Richter, T. Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments |
topic_facet |
clay minerals bottom water circulation magnetic properties glacial period Dansgaard-Oeschger cycles North Atlantic [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience In order to investigate North Atlantic Deep Water (NADW) dynamics and variability during the last glacial stage, a very high resolution multiproxy analysis of the detrital fraction of sediments deposited during Heinrich event 4 and Dansgaard-Oeschger cycles 8 and 7 has been conducted on three deep-sea cores. These cores are distributed along the path of the North Atlantic Deep Water from the Faeroe Shetland Channel to the Reykjanes ridge and the Irminger basin. The concentration in fine-grained magnetites, the Ti-content, and the smectite percentage within the clay minerals show similar and coeval fluctuations at each site and are comparable from one site to the other. This is the imprint of the detrital fraction originating from the northern basaltic provinces and transported to the studied sites. The average grain size in the fine fraction indicates a transport by deep-sea currents. Therefore the observed fluctuations illustrate changes in the vigor of the bottom currents associated with the NADW with weak currents during cold periods (Heinrich 4 and stadials) and reactivation of the bottom circulation during interstadials. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Climat et Magnétisme (CLIMAG) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Royal Netherlands Institute for Sea Research (NIOZ) |
format |
Article in Journal/Newspaper |
author |
Ballini, M. Kissel, C. Colin, C. Richter, T. |
author_facet |
Ballini, M. Kissel, C. Colin, C. Richter, T. |
author_sort |
Ballini, M. |
title |
Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments |
title_short |
Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments |
title_full |
Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments |
title_fullStr |
Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments |
title_full_unstemmed |
Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the North Atlantic: A multiproxy investigation of the detrital fraction of deep-sea sediments |
title_sort |
deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the north atlantic: a multiproxy investigation of the detrital fraction of deep-sea sediments |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-03118259 https://hal.science/hal-03118259/document https://hal.science/hal-03118259/file/2005GC001070.pdf https://doi.org/10.1029/2005GC001070 |
genre |
NADW North Atlantic Deep Water North Atlantic |
genre_facet |
NADW North Atlantic Deep Water North Atlantic |
op_source |
EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-03118259 Geochemistry, Geophysics, Geosystems, 2006, 7 (2), ⟨10.1029/2005GC001070⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2005GC001070 hal-03118259 https://hal.science/hal-03118259 https://hal.science/hal-03118259/document https://hal.science/hal-03118259/file/2005GC001070.pdf doi:10.1029/2005GC001070 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2005GC001070 |
container_title |
Geochemistry, Geophysics, Geosystems |
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7 |
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2 |
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1810457111841210368 |