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Marine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheet

2023Journal article Restricted access
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dc.contributor.authorToucanne, Samuel
dc.contributor.authorRodrigues, Teresa
dc.contributor.authorMenot, Guillemette
dc.contributor.authorSoulet, Guillaume
dc.contributor.authorCheron, Sandrine
dc.contributor.authorBilly, Isabelle
dc.contributor.authorEynaud, Frederique
dc.contributor.authorAntoine, Pierre
dc.contributor.authorSinninghe Damste, Jaap S.
dc.contributor.authorBard, Edouard
dc.contributor.authorSanchez Goñi, Maria-Fernanda
dc.date.accessioned2023-12-04T10:52:26Z
dc.date.available2023-12-04T10:52:26Z
dc.date.issued2023
dc.description.abstractMarine 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 Western Europe corresponds, as for MIS 2, to a complex combination of general ice advance interspersed by preliminary-to-final EIS demises highlighted by HS conditions.pt_PT
dc.description.sponsorshipLA/P/0101/2020; PTDC/CTA-CLI/4608/2020; POCI-01-0145-FEDER-022157; ACCLIMATE/n◦ 339108pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.gloplacha.2023.104221pt_PT
dc.identifier.eissn1872-6364
dc.identifier.urihttp://hdl.handle.net/10400.1/20182
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationFeatures and lessons from Past Interglacials ? warm periods ? over the last 1.5 Ma
dc.subjectEuropean ice sheetpt_PT
dc.subjectMarine isotope stage 4pt_PT
dc.subjectClimate dynamicspt_PT
dc.subjectNortheast Atlanticpt_PT
dc.subjectBay of Biscaypt_PT
dc.subjectHeinrich stadialspt_PT
dc.subjectQuaternarypt_PT
dc.subjectDeep-sea corespt_PT
dc.titleMarine Isotope Stage 4 (71–57 ka) on the Western European margin: insights to the drainage and dynamics of the Western European Ice Sheetpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleFeatures and lessons from Past Interglacials ? warm periods ? over the last 1.5 Ma
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTA-GEO%2F29897%2F2017/PT
oaire.citation.startPage104221pt_PT
oaire.citation.titleGlobal and Planetary Changept_PT
oaire.citation.volume229pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream9471 - RIDTI
person.familyNameRodrigues
person.givenNameTeresa
person.identifier.ciencia-idEC18-2390-9594
person.identifier.orcid0000-0001-7811-7506
person.identifier.ridG-2912-2013
person.identifier.scopus-author-id7004330274
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication0a137e49-be7a-4e12-85e2-3def90980f7e
relation.isAuthorOfPublication.latestForDiscovery0a137e49-be7a-4e12-85e2-3def90980f7e
relation.isProjectOfPublicationfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f
relation.isProjectOfPublication56bbcfa3-d0ad-4fbd-817a-b9fed5e36b76
relation.isProjectOfPublication.latestForDiscoveryfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f

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