Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet
Marine Isotope Stage (MIS) 4 (ca. 71–57 ka; within the Middle Weichselian Substage) is considered a significant Pleistocene glaciation, but it remains poorly constrained in comparison to that of the Late Weichselian Last Glacial Maximum (LGM; ca. 29–19 ka, during MIS 2), or even the Late Saalian MIS...
Published in: | Global and Planetary Change |
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Language: | English |
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Online Access: | http://hdl.handle.net/10400.1/20182 https://doi.org/10.1016/j.gloplacha.2023.104221 |
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/20182 2023-12-31T10:06:50+01:00 Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet Toucanne, Samuel Rodrigues, Teresa Menot, Guillemette Soulet, Guillaume Cheron, Sandrine Billy, Isabelle Eynaud, Frederique Antoine, Pierre Sinninghe Damste, Jaap S. Bard, Edouard Sanchez Goñi, Maria-Fernanda 2023 http://hdl.handle.net/10400.1/20182 https://doi.org/10.1016/j.gloplacha.2023.104221 eng eng Elsevier info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTA-GEO%2F29897%2F2017/PT http://hdl.handle.net/10400.1/20182 doi:10.1016/j.gloplacha.2023.104221 1872-6364 restrictedAccess European ice sheet Marine isotope stage 4 Climate dynamics Northeast Atlantic Bay of Biscay Heinrich stadials Quaternary Deep-sea cores article 2023 ftunivalgarve https://doi.org/10.1016/j.gloplacha.2023.104221 2023-12-06T01:03:58Z Marine Isotope Stage (MIS) 4 (ca. 71–57 ka; within the Middle Weichselian Substage) is considered a significant Pleistocene glaciation, but it remains poorly constrained in comparison to that of the Late Weichselian Last Glacial Maximum (LGM; ca. 29–19 ka, during MIS 2), or even the Late Saalian MIS 6 (ca. 190–130 ka). Most MIS 4 glacial landforms in Europe were erased by the more extensive LGM ice advance, precluding a robust recon struction of its extent and dynamic through time. Marine sedimentary archives, in preserving the source-to-sink sediment transfer signals of ice-sheet and glacier processes, help to bridge this gap. Here, the signals west of the European Ice Sheet (EIS) are tracked for MIS 4 from the deep Bay of Biscay (NE Atlantic), which was the outlet for Fennoscandian Ice Sheet (FIS) sediment-laden meltwater during extensive glaciations, specifically when the British-Irish Ice Sheet (BIIS) and the FIS coalesced into the North Sea (as during MIS 6 and the LGM). Sedi mentological, geochemical, and mineralogical proxies reveal the absence of FIS-derived material in Bay of Biscay sediment throughout MIS 4, which indicates that FIS meltwater and huge river systems from the North European Plain never drained into the Bay of Biscay at that time. This suggests that contrary to MIS 6 and the LGM, the BIIS and FIS were not likely large enough to coalesce and form a (grounded) ice bridge onto the North Sea, thus confirming geomorphic evidence for a significant, but relatively limited, glaciation in Europe during MIS 4. Closer to the Bay of Biscay, ice-marginal fluctuations of the BIIS are identified in the Celtic-Irish Sea region from the deep-sea record. More specifically, our findings suggest an early retreat of the Irish Sea Ice Stream as soon as ca. 68–65 ka, a few millennia before the demise of the EIS, and the Northern Hemisphere ice sheets as a whole, during Heinrich Stadial (HS) 6. This pattern is similar to that already recorded during MIS 2. Finally, this study reveals that the MIS 4 period in ... Article in Journal/Newspaper Fennoscandian Ice Sheet Northeast Atlantic Sea ice Universidade do Algarve: Sapienta Global and Planetary Change 229 104221 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
topic |
European ice sheet Marine isotope stage 4 Climate dynamics Northeast Atlantic Bay of Biscay Heinrich stadials Quaternary Deep-sea cores |
spellingShingle |
European ice sheet Marine isotope stage 4 Climate dynamics Northeast Atlantic Bay of Biscay Heinrich stadials Quaternary Deep-sea cores Toucanne, Samuel Rodrigues, Teresa Menot, Guillemette Soulet, Guillaume Cheron, Sandrine Billy, Isabelle Eynaud, Frederique Antoine, Pierre Sinninghe Damste, Jaap S. Bard, Edouard Sanchez Goñi, Maria-Fernanda Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet |
topic_facet |
European ice sheet Marine isotope stage 4 Climate dynamics Northeast Atlantic Bay of Biscay Heinrich stadials Quaternary Deep-sea cores |
description |
Marine Isotope Stage (MIS) 4 (ca. 71–57 ka; within the Middle Weichselian Substage) is considered a significant Pleistocene glaciation, but it remains poorly constrained in comparison to that of the Late Weichselian Last Glacial Maximum (LGM; ca. 29–19 ka, during MIS 2), or even the Late Saalian MIS 6 (ca. 190–130 ka). Most MIS 4 glacial landforms in Europe were erased by the more extensive LGM ice advance, precluding a robust recon struction of its extent and dynamic through time. Marine sedimentary archives, in preserving the source-to-sink sediment transfer signals of ice-sheet and glacier processes, help to bridge this gap. Here, the signals west of the European Ice Sheet (EIS) are tracked for MIS 4 from the deep Bay of Biscay (NE Atlantic), which was the outlet for Fennoscandian Ice Sheet (FIS) sediment-laden meltwater during extensive glaciations, specifically when the British-Irish Ice Sheet (BIIS) and the FIS coalesced into the North Sea (as during MIS 6 and the LGM). Sedi mentological, geochemical, and mineralogical proxies reveal the absence of FIS-derived material in Bay of Biscay sediment throughout MIS 4, which indicates that FIS meltwater and huge river systems from the North European Plain never drained into the Bay of Biscay at that time. This suggests that contrary to MIS 6 and the LGM, the BIIS and FIS were not likely large enough to coalesce and form a (grounded) ice bridge onto the North Sea, thus confirming geomorphic evidence for a significant, but relatively limited, glaciation in Europe during MIS 4. Closer to the Bay of Biscay, ice-marginal fluctuations of the BIIS are identified in the Celtic-Irish Sea region from the deep-sea record. More specifically, our findings suggest an early retreat of the Irish Sea Ice Stream as soon as ca. 68–65 ka, a few millennia before the demise of the EIS, and the Northern Hemisphere ice sheets as a whole, during Heinrich Stadial (HS) 6. This pattern is similar to that already recorded during MIS 2. Finally, this study reveals that the MIS 4 period in ... |
format |
Article in Journal/Newspaper |
author |
Toucanne, Samuel Rodrigues, Teresa Menot, Guillemette Soulet, Guillaume Cheron, Sandrine Billy, Isabelle Eynaud, Frederique Antoine, Pierre Sinninghe Damste, Jaap S. Bard, Edouard Sanchez Goñi, Maria-Fernanda |
author_facet |
Toucanne, Samuel Rodrigues, Teresa Menot, Guillemette Soulet, Guillaume Cheron, Sandrine Billy, Isabelle Eynaud, Frederique Antoine, Pierre Sinninghe Damste, Jaap S. Bard, Edouard Sanchez Goñi, Maria-Fernanda |
author_sort |
Toucanne, Samuel |
title |
Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet |
title_short |
Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet |
title_full |
Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet |
title_fullStr |
Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet |
title_full_unstemmed |
Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet |
title_sort |
marine isotope stage 4 (71–57 ka) on the western european margin: insights to the drainage and dynamics of the western european ice sheet |
publisher |
Elsevier |
publishDate |
2023 |
url |
http://hdl.handle.net/10400.1/20182 https://doi.org/10.1016/j.gloplacha.2023.104221 |
genre |
Fennoscandian Ice Sheet Northeast Atlantic Sea ice |
genre_facet |
Fennoscandian Ice Sheet Northeast Atlantic Sea ice |
op_relation |
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTA-GEO%2F29897%2F2017/PT http://hdl.handle.net/10400.1/20182 doi:10.1016/j.gloplacha.2023.104221 1872-6364 |
op_rights |
restrictedAccess |
op_doi |
https://doi.org/10.1016/j.gloplacha.2023.104221 |
container_title |
Global and Planetary Change |
container_volume |
229 |
container_start_page |
104221 |
_version_ |
1786839014650675200 |