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Gravity-Driven Deposits in an Active Margin (Ionian Sea) Over the Last 330,000 Years: GRAVITY-DRIVEN DEPOSITS IN ACTIVE MARGIN

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorKONG, Eleonore
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorZARAGOSI, Sebastien
IDREF: 189039159
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHNEIDER, Jean-Luc
dc.contributor.authorGARLAN, Thierry
dc.contributor.authorBACHÈLERY, Patrick
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSABINE, Marjolaine
dc.contributor.authorSAN PEDRO, Laurine
dc.date.accessioned2024-10-24T11:28:21Z
dc.date.available2024-10-24T11:28:21Z
dc.date.issued2017-11-29
dc.identifier.issn1525-2027en_US
dc.identifier.urioai:crossref.org:10.1002/2017gc006950
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/202705
dc.description.abstractEnIn the Ionian Sea, the subduction of the Nubia plate underneath the Eurasia plate leads to an important sediment remobilization on the Calabrian Arc and the Mediterranean Ridge. These events are often associated with earthquakes and tsunamis. In this study, we analyze gravity-driven deposits in order to establish their recurrence time on the Calabrian Arc and the western Mediterranean Ridge. Four gravity cores collected on ridges and slope basins of accretionary prisms record turbidites, megaturbidites, slumping and micro-faults over the last 330,000 years. These turbidites were dated by correlation with a hemipelagic core with a multi-proxy approach: radiometric dating, d18O, b* colour curve, sapropels and tephrochronology. The origin of the gravity-driven deposits was studied with a sedimentary approach: grain-size, lithology, thin section, geochemistry of volcanic glass. The results suggest three periods of presence/absence of gravity-driven deposits: a first on the western lobe of the Calabrian Arc between 330,000 and 250,000 years, a second between 120,000 years and present day on the eastern lobe of the Calabrian Arc and over the last 60,000 years on the western lobe, and a third on the Mediterranean Ridge over the last 37,000 years. Return times for gravity-driven deposits are around 1,000 years during the most important record periods. The turbidite activity also highlights the presence of volcaniclastic turbidites that seems to be link to the Etna changing morphology over the last 320,000 years.
dc.language.isoENen_US
dc.sourcecrossref
dc.title.enGravity-Driven Deposits in an Active Margin (Ionian Sea) Over the Last 330,000 Years: GRAVITY-DRIVEN DEPOSITS IN ACTIVE MARGIN
dc.typeArticle de revueen_US
dc.identifier.doi10.1002/2017gc006950en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalGeochemistry, Geophysics, Geosystemsen_US
bordeaux.page4186-4210en_US
bordeaux.volume18en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue11en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamGEOLSEDen_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=Geochemistry,%20Geophysics,%20Geosystems&rft.date=2017-11-29&rft.volume=18&rft.issue=11&rft.spage=4186-4210&rft.epage=4186-4210&rft.eissn=1525-2027&rft.issn=1525-2027&rft.au=KONG,%20Eleonore&ZARAGOSI,%20Sebastien&SCHNEIDER,%20Jean-Luc&GARLAN,%20Thierry&BACH%C3%88LERY,%20Patrick&rft.genre=article


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