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Terrigenous fluxes at the Celtic margin during the last glacial cycle.

dc.rights.licenseopenen_US
dc.contributor.authorAUFFRET, Gérard
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorZARAGOSI, Sebastien
IDREF: 189039159
dc.contributor.authorDENNIELOU, Bernard
dc.contributor.authorCORTIJO, Elsa
dc.contributor.authorVAN ROOIJ, David
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGROUSSET, Francis
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorPUJOL, Claude
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorEYNAUD, Frederique
IDREF: 144113570
dc.contributor.authorSIEGERT, Martin
dc.date.accessioned2024-11-15T12:50:25Z
dc.date.available2024-11-15T12:50:25Z
dc.date.issued2002-01-01
dc.identifier.issn0025-3227en_US
dc.identifier.uriftunivgent:oai:archive.ugent.be:163517
dc.identifier.urioai:researchgate.net:222662335
dc.identifier.urioai:crossref.org:10.1016/s0025-3227(02)00276-1
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/203305
dc.description.abstractEnThe sedimentary sections of three cores from the Celtic margin provide high-resolution records of the terrigenous fluxes during the last glacial cycle. A total of 21 14C AMS dates allow us to define age models with a resolution better than 100 yr during critical periods such as Heinrich events 1 and 2. Maximum sedimentary fluxes occurred at the Meriadzek Terrace site during the Last Glacial Maximum (LGM). Detailed X-ray imagery of core MD95-2002 from the Meriadzek Terrace shows no sedimentary structures suggestive of either deposition from high-density turbidity currents or significant erosion. Two paroxysmal terrigenous flux episodes have been identified. The first occurred after the deposition of Heinrich event 2 Canadian ice-rafted debris (IRD) and includes IRD from European sources. We suggest that the second represents an episode of deposition from turbid plumes, which precedes IRD deposition associated with Heinrich event 1. At the end of marine isotopic stage 2 (MIS 2) and the beginning of MIS 1 the highest fluxes are recorded on the Whittard Ridge where they correspond to deposition from turbidity current overflows. Canadian icebergs have rafted debris at the Celtic margin during Heinrich events 1, 2, 4 and 5. The high-resolution records of Heinrich events 1 and 2 show that in both cases the arrival of the Canadian icebergs was preceded by a European ice rafting precursor event, which took place about 1–1.5 kyr before. Two rafting episodes of European IRD also occurred immediately after Heinrich event 2 and just before Heinrich event 1. The terrigenous fluxes recorded in core MD95-2002 during the LGM are the highest reported at hemipelagic sites from the northwestern European margin. The magnitude of the Canadian IRD fluxes at Meriadzek Terrace is similar to those from oceanic sites.
dc.language.isoENen_US
dc.sourcebase
dc.sourceresearchgate
dc.sourcecrossref
dc.title.enTerrigenous fluxes at the Celtic margin during the last glacial cycle.
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/s0025-3227(02)00276-1en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalMarine Geologyen_US
bordeaux.page79-108en_US
bordeaux.volume188en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue1-2en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine%20Geology&rft.date=2002-01-01&rft.volume=188&rft.issue=1-2&rft.spage=79-108&rft.epage=79-108&rft.eissn=0025-3227&rft.issn=0025-3227&rft.au=AUFFRET,%20G%C3%A9rard&ZARAGOSI,%20Sebastien&DENNIELOU,%20Bernard&CORTIJO,%20Elsa&VAN%20ROOIJ,%20David&rft.genre=article


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