The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago
The Fleuve Manche (English Channel) palaeoriver represents the largest river system that drained the European continent during Pleistocene lowstands, particularly during the Elsterian (Marine Isotope Stage 12) and Saalian Drenthe (MIS 6) glaciations when extensive ice advances into the North Sea are...
Published in: | Earth and Planetary Science Letters |
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Language: | English |
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Online Access: | https://archimer.ifremer.fr/doc/00002/11310/7858.pdf https://doi.org/10.1016/j.epsl.2009.12.050 https://archimer.ifremer.fr/doc/00002/11310/ |
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ftarchimer:oai:archimer.ifremer.fr:11310 2023-05-15T16:13:10+02:00 The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago Toucanne, Samuel Zaragosi, Sebastien Bourillet, Jean-francois Marieu, Vincent Cremer, Michel Kageyama, Masa Van Vliet-lanoe, Brigitte Eynaud, Frederique Turon, Jean-louis Gibbard, Philip L. 2010-02 application/pdf https://archimer.ifremer.fr/doc/00002/11310/7858.pdf https://doi.org/10.1016/j.epsl.2009.12.050 https://archimer.ifremer.fr/doc/00002/11310/ eng eng Elsevier Science Bv https://archimer.ifremer.fr/doc/00002/11310/7858.pdf doi:10.1016/j.epsl.2009.12.050 https://archimer.ifremer.fr/doc/00002/11310/ 2010 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use Earth And Planetary Science Letters (0012-821X) (Elsevier Science Bv), 2010-02 , Vol. 290 , N. 3-4 , P. 459-473 Fleuve Manche palaeoriver English Channel sediment and meltwater discharge European ice sheet deglaciation Termination 1 North Sea area European drainage network text Publication info:eu-repo/semantics/article 2010 ftarchimer https://doi.org/10.1016/j.epsl.2009.12.050 2021-09-23T20:18:11Z The Fleuve Manche (English Channel) palaeoriver represents the largest river system that drained the European continent during Pleistocene lowstands, particularly during the Elsterian (Marine Isotope Stage 12) and Saalian Drenthe (MIS 6) glaciations when extensive ice advances into the North Sea area forced the central European rivers to flow southwards to the Bay of Biscay (NE Atlantic). Numerous long piston cores and high-resolution acoustic data from the northern Bay of Biscay have been correlated using a well-constrained chronostratigraphical framework, and for the first time allow the estimation of the discharge of the Fleuve Manche palaeoriver at the end of the last glacial period (i.e. Weichselian). Our results, discussed in the light of relationships between river loads and drainage area characteristics, strongly suggest that the Bay of Biscay collected sediment-laden meltwater from the Northern European lowlands and the southern part of the Fermoscandian ice sheet at the end of the last glacial period and particularly during the paroxysmal phase of the European deglaciation ca 20-18 ka ago. This demonstrates that the Fleuve Manche drainage area at that time was equivalent to those dating from the major Elsterian and Saalian Drenthe glaciations. Based on our data, we propose a revision of the palaeogeographical and palaeoglaciological evolution of the North Sea area while showing that the British and Fermoscandian ice sheets entered the North Sea basin until ca 18 ka initiating isostatic adjustment of the basin. This allowed the North Sea fluvial system to flow southwards through the Dover Strait. Finally, we discuss the Fleuve Manche freshwater discharge during the maximum European ice sheet retreat ca 18 ka. The estimated discharge at this time appears important and sufficiently sustained to possibly contribute to the profound destabilisation of the thermohaline circulation recognised in the North Atlantic from ca 18 to 16 ka. Article in Journal/Newspaper Fennoscandian Ice Sheet North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Dover ENVELOPE(-55.753,-55.753,-83.777,-83.777) Earth and Planetary Science Letters 290 3-4 459 473 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Fleuve Manche palaeoriver English Channel sediment and meltwater discharge European ice sheet deglaciation Termination 1 North Sea area European drainage network |
spellingShingle |
Fleuve Manche palaeoriver English Channel sediment and meltwater discharge European ice sheet deglaciation Termination 1 North Sea area European drainage network Toucanne, Samuel Zaragosi, Sebastien Bourillet, Jean-francois Marieu, Vincent Cremer, Michel Kageyama, Masa Van Vliet-lanoe, Brigitte Eynaud, Frederique Turon, Jean-louis Gibbard, Philip L. The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago |
topic_facet |
Fleuve Manche palaeoriver English Channel sediment and meltwater discharge European ice sheet deglaciation Termination 1 North Sea area European drainage network |
description |
The Fleuve Manche (English Channel) palaeoriver represents the largest river system that drained the European continent during Pleistocene lowstands, particularly during the Elsterian (Marine Isotope Stage 12) and Saalian Drenthe (MIS 6) glaciations when extensive ice advances into the North Sea area forced the central European rivers to flow southwards to the Bay of Biscay (NE Atlantic). Numerous long piston cores and high-resolution acoustic data from the northern Bay of Biscay have been correlated using a well-constrained chronostratigraphical framework, and for the first time allow the estimation of the discharge of the Fleuve Manche palaeoriver at the end of the last glacial period (i.e. Weichselian). Our results, discussed in the light of relationships between river loads and drainage area characteristics, strongly suggest that the Bay of Biscay collected sediment-laden meltwater from the Northern European lowlands and the southern part of the Fermoscandian ice sheet at the end of the last glacial period and particularly during the paroxysmal phase of the European deglaciation ca 20-18 ka ago. This demonstrates that the Fleuve Manche drainage area at that time was equivalent to those dating from the major Elsterian and Saalian Drenthe glaciations. Based on our data, we propose a revision of the palaeogeographical and palaeoglaciological evolution of the North Sea area while showing that the British and Fermoscandian ice sheets entered the North Sea basin until ca 18 ka initiating isostatic adjustment of the basin. This allowed the North Sea fluvial system to flow southwards through the Dover Strait. Finally, we discuss the Fleuve Manche freshwater discharge during the maximum European ice sheet retreat ca 18 ka. The estimated discharge at this time appears important and sufficiently sustained to possibly contribute to the profound destabilisation of the thermohaline circulation recognised in the North Atlantic from ca 18 to 16 ka. |
format |
Article in Journal/Newspaper |
author |
Toucanne, Samuel Zaragosi, Sebastien Bourillet, Jean-francois Marieu, Vincent Cremer, Michel Kageyama, Masa Van Vliet-lanoe, Brigitte Eynaud, Frederique Turon, Jean-louis Gibbard, Philip L. |
author_facet |
Toucanne, Samuel Zaragosi, Sebastien Bourillet, Jean-francois Marieu, Vincent Cremer, Michel Kageyama, Masa Van Vliet-lanoe, Brigitte Eynaud, Frederique Turon, Jean-louis Gibbard, Philip L. |
author_sort |
Toucanne, Samuel |
title |
The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago |
title_short |
The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago |
title_full |
The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago |
title_fullStr |
The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago |
title_full_unstemmed |
The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20-18 ka ago |
title_sort |
first estimation of fleuve manche palaeoriver discharge during the last deglaciation: evidence for fennoscandian ice sheet meltwater flow in the english channel ca 20-18 ka ago |
publisher |
Elsevier Science Bv |
publishDate |
2010 |
url |
https://archimer.ifremer.fr/doc/00002/11310/7858.pdf https://doi.org/10.1016/j.epsl.2009.12.050 https://archimer.ifremer.fr/doc/00002/11310/ |
long_lat |
ENVELOPE(-55.753,-55.753,-83.777,-83.777) |
geographic |
Dover |
geographic_facet |
Dover |
genre |
Fennoscandian Ice Sheet North Atlantic |
genre_facet |
Fennoscandian Ice Sheet North Atlantic |
op_source |
Earth And Planetary Science Letters (0012-821X) (Elsevier Science Bv), 2010-02 , Vol. 290 , N. 3-4 , P. 459-473 |
op_relation |
https://archimer.ifremer.fr/doc/00002/11310/7858.pdf doi:10.1016/j.epsl.2009.12.050 https://archimer.ifremer.fr/doc/00002/11310/ |
op_rights |
2010 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.epsl.2009.12.050 |
container_title |
Earth and Planetary Science Letters |
container_volume |
290 |
container_issue |
3-4 |
container_start_page |
459 |
op_container_end_page |
473 |
_version_ |
1765998778588856320 |