Afficher la notice abrégée

Contrasting sediment records of marine submersion events related to wave exposure, Southwest France

dc.rights.licenseopenen_US
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorBAUMANN, Juliette
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorCHAUMILLON, Eric
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHNEIDER, Jean-Luc
hal.structure.identifierBio-Indicateurs Actuels et Fossiles [BIAF]
dc.contributor.authorJORISSEN, Frank
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorSAURIAU, Pierre-Guy
hal.structure.identifierLIttoral ENvironnement et Sociétés [LIENSs]
dc.contributor.authorRICHARD, Pierre
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBONNIN, Jerome
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHMIDT, Sabine
IDREF: 131836129
dc.date.accessioned2024-04-08T12:53:41Z
dc.date.available2024-04-08T12:53:41Z
dc.date.issued2017-05
dc.identifier.issn0037-0738en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197365
dc.description.abstractEnSediment records of two contrasting backshore coastal marshes, extremely vulnerable to recent and historical marine flooding events, located on the SW coast of France, have been investigated using a multiproxy approach. The studied marshes are 30 km apart and have been flooded by similar storm events (7 marine floods in the last 250 years). One is located in a wave-exposed coast but isolated from the sea by a sediment barrier, whereas the other is located in a sheltered estuarine environment and isolated from the sea by a dike. One core was collected in each marsh and information on grain-size, foraminifera, shell contents and stable carbon isotopes was obtained along with an age model using 210Pb, 137Cs and 14C. Core data combined with historical maps give evidence of a typical estuarine backfilling, part of the Holocene regressive parasequence, including an intertidal mudflat at the base and a backshore environment at the top. Despite the absence of grain size anomalies, marine flood-related sedimentation in the backshore area of both marshes is identified by a mixture of marine and terrestrial features, including marine fauna, vegetation debris and variation in the δ13C signature of the organic fraction. Very low sedimentation rates between flood events and/or bioturbation prevents the identification of individual episodic marine floods in the sediment succession. Comparison of the two sedimentary successions shows that the foraminifera deposited by marine submersions are of two different types. Foraminifera are monospecific and originate from the upper tidal mudflat in the sheltered marsh; whereas in the backshore marsh located in a wave-exposed environment, they show higher diversity and originate from both shallow and deeper water marine environments. Thisstudy shows that wave exposure can control the faunal content of marine flood sediment records in coastal marshes.
dc.language.isoENen_US
dc.subject.ensediment
dc.subject.enmarine flooding
dc.subject.enstorm waves
dc.subject.enforaminifera
dc.title.enContrasting sediment records of marine submersion events related to wave exposure, Southwest France
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.sedgeo.2017.03.009en_US
dc.subject.halPlanète et Univers [physics]/Interfaces continentales, environnementen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géomorphologieen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph]en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Océanographieen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Stratigraphieen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Volcanologieen_US
bordeaux.journalSedimentary Geologyen_US
bordeaux.page158 - 170en_US
bordeaux.volume353en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamSEDIMen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-01651635
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Sedimentary%20Geology&rft.date=2017-05&rft.volume=353&rft.spage=158%20-%20170&rft.epage=158%20-%20170&rft.eissn=0037-0738&rft.issn=0037-0738&rft.au=BAUMANN,%20Juliette&CHAUMILLON,%20Eric&SCHNEIDER,%20Jean-Luc&JORISSEN,%20Frank&SAURIAU,%20Pierre-Guy&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée