Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges
International audience We have compiled results obtained from four high sedimentation rate hemipelagic sequences from the Celtic sector of the NW European margin (NE Atlantic) to investigate the paleoceanographic and paleoclimatic evolution of the area over the last few climatic cycles. We focus on...
Published in: | Geochemistry, Geophysics, Geosystems |
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Online Access: | https://hal.science/hal-03974781 https://hal.science/hal-03974781/document https://hal.science/hal-03974781/file/4_Eynaud_etal_2007.pdf https://doi.org/10.1029/2006GC001496 |
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ftecolephe:oai:HAL:hal-03974781v1 2024-09-15T18:12:18+00:00 Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges Eynaud, F. Zaragosi, S. Scourse, J, D Mojtahid, M. Bourillet, J, F Hall, I, R Penaud, A. Locascio, M. Reijonen, A. Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) School of Ocean Sciences, University of Wales (Bangor) Bio-Indicateurs Actuels et Fossiles (BIAF) Université d'Angers (UA) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Cardiff University Flotte océanographique françaiseThe ARTEMIS 14C Accelerator Mass Spectrometry French projectSHOM ANR-05-BLAN-0310,IDEGLACE,Impact de Décharges d'Eau douce provenant de la GLace continentale sur le Climat Européen et méditerranéen(2005) 2007-06 https://hal.science/hal-03974781 https://hal.science/hal-03974781/document https://hal.science/hal-03974781/file/4_Eynaud_etal_2007.pdf https://doi.org/10.1029/2006GC001496 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2006GC001496 hal-03974781 https://hal.science/hal-03974781 https://hal.science/hal-03974781/document https://hal.science/hal-03974781/file/4_Eynaud_etal_2007.pdf doi:10.1029/2006GC001496 info:eu-repo/semantics/OpenAccess EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-03974781 Geochemistry, Geophysics, Geosystems, 2007, 8 (6), pp.n/a-n/a. ⟨10.1029/2006GC001496⟩ Celtic margin glacial terminations laminated sediments freshwater pulse/discharge ice-rafted detritus planktonic microfossils [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2007 ftecolephe https://doi.org/10.1029/2006GC001496 2024-07-22T23:39:13Z International audience We have compiled results obtained from four high sedimentation rate hemipelagic sequences from the Celtic sector of the NW European margin (NE Atlantic) to investigate the paleoceanographic and paleoclimatic evolution of the area over the last few climatic cycles. We focus on periods characteristic of deglacial transitions. We adopt a multiproxy sedimentological, geochemical, and micropaleontological approach, applying a sampling resolution down to ten microns for specific intervals. The investigation demonstrates the relationships between the Bay of Biscay hydrography and the glacial/deglacial history of both the proximal British-Irish Ice Sheet (BIIS) and the western European continent. We identify recurrent phases of laminae deposition concurrent with major BIIS deglacial episodes in all the studied cores. Evidence for abrupt freshwater discharges into the open ocean highlights the influence of such events at a regional scale. We discuss their impact at a global scale considering the present and past key location of the Bay of Biscay versus the Atlantic Meridional Overturning Circulation (AMOC). Article in Journal/Newspaper Ice Sheet EPHE (Ecole pratique des hautes études, Paris): HAL Geochemistry, Geophysics, Geosystems 8 6 n/a n/a |
institution |
Open Polar |
collection |
EPHE (Ecole pratique des hautes études, Paris): HAL |
op_collection_id |
ftecolephe |
language |
English |
topic |
Celtic margin glacial terminations laminated sediments freshwater pulse/discharge ice-rafted detritus planktonic microfossils [SDU]Sciences of the Universe [physics] |
spellingShingle |
Celtic margin glacial terminations laminated sediments freshwater pulse/discharge ice-rafted detritus planktonic microfossils [SDU]Sciences of the Universe [physics] Eynaud, F. Zaragosi, S. Scourse, J, D Mojtahid, M. Bourillet, J, F Hall, I, R Penaud, A. Locascio, M. Reijonen, A. Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges |
topic_facet |
Celtic margin glacial terminations laminated sediments freshwater pulse/discharge ice-rafted detritus planktonic microfossils [SDU]Sciences of the Universe [physics] |
description |
International audience We have compiled results obtained from four high sedimentation rate hemipelagic sequences from the Celtic sector of the NW European margin (NE Atlantic) to investigate the paleoceanographic and paleoclimatic evolution of the area over the last few climatic cycles. We focus on periods characteristic of deglacial transitions. We adopt a multiproxy sedimentological, geochemical, and micropaleontological approach, applying a sampling resolution down to ten microns for specific intervals. The investigation demonstrates the relationships between the Bay of Biscay hydrography and the glacial/deglacial history of both the proximal British-Irish Ice Sheet (BIIS) and the western European continent. We identify recurrent phases of laminae deposition concurrent with major BIIS deglacial episodes in all the studied cores. Evidence for abrupt freshwater discharges into the open ocean highlights the influence of such events at a regional scale. We discuss their impact at a global scale considering the present and past key location of the Bay of Biscay versus the Atlantic Meridional Overturning Circulation (AMOC). |
author2 |
Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) School of Ocean Sciences, University of Wales (Bangor) Bio-Indicateurs Actuels et Fossiles (BIAF) Université d'Angers (UA) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Cardiff University Flotte océanographique françaiseThe ARTEMIS 14C Accelerator Mass Spectrometry French projectSHOM ANR-05-BLAN-0310,IDEGLACE,Impact de Décharges d'Eau douce provenant de la GLace continentale sur le Climat Européen et méditerranéen(2005) |
format |
Article in Journal/Newspaper |
author |
Eynaud, F. Zaragosi, S. Scourse, J, D Mojtahid, M. Bourillet, J, F Hall, I, R Penaud, A. Locascio, M. Reijonen, A. |
author_facet |
Eynaud, F. Zaragosi, S. Scourse, J, D Mojtahid, M. Bourillet, J, F Hall, I, R Penaud, A. Locascio, M. Reijonen, A. |
author_sort |
Eynaud, F. |
title |
Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges |
title_short |
Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges |
title_full |
Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges |
title_fullStr |
Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges |
title_full_unstemmed |
Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges |
title_sort |
deglacial laminated facies on the nw european continental margin: the hydrographic significance of british-irish ice sheet deglaciation and fleuve manche paleoriver discharges |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-03974781 https://hal.science/hal-03974781/document https://hal.science/hal-03974781/file/4_Eynaud_etal_2007.pdf https://doi.org/10.1029/2006GC001496 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-03974781 Geochemistry, Geophysics, Geosystems, 2007, 8 (6), pp.n/a-n/a. ⟨10.1029/2006GC001496⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2006GC001496 hal-03974781 https://hal.science/hal-03974781 https://hal.science/hal-03974781/document https://hal.science/hal-03974781/file/4_Eynaud_etal_2007.pdf doi:10.1029/2006GC001496 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2006GC001496 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
8 |
container_issue |
6 |
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1810449887243796480 |