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Canyon morphology on a modern carbonate slope of the Bahamas: Evidence of regional tectonic tilting

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMULDER, Thierry
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDUCASSOU, Emmanuelle
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGILLET, Herve
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorHANQUIEZ, Vincent
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorTOURNADOUR, Elsa
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCOMBES, J.
dc.contributor.authorEBERLI, G. P.
dc.contributor.authorKINDLER, P.
dc.contributor.authorGONTHIER, E.
dc.contributor.authorCONESA, Gilles
dc.contributor.authorROBIN, Cécile
dc.contributor.authorSIANIPAR, R.
dc.contributor.authorREIJMER, J. J. G.
dc.contributor.authorFRANCOIS, A.
dc.date.accessioned2024-11-13T14:45:11Z
dc.date.available2024-11-13T14:45:11Z
dc.date.issued2012-01-01
dc.identifier.issn0091-7613en_US
dc.identifier.urihttps://hal-insu.archives-ouvertes.fr/insu-00739352
dc.identifier.uriftunivrennes1hal:oai:HAL:insu-00739352v1
dc.identifier.urioai:researchgate.net:273197440
dc.identifier.urioai:crossref.org:10.1130/g33327.1
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/203245
dc.description.abstractEnNew high-quality multibeam data presented here depict the northern slope of the Little Bahama Bank (Bahamas). The survey reveals the details of large- and small-scale morphologies that look like siliciclastic systems at a smaller scale, including large-scale slope failure scars and canyon morphologies, previously interpreted as gullies and creep lobes. The slope exhibits mature turbidite systems built by mass-fl ow events and turbidity currents. The sediment transport processes are probably more complex than expected. Slope failures show sinuous head scarps with various sizes, and most of the scars are fi lled with recent sediment. Canyons have amphitheater-shaped heads resulting from coalescing slump scars, and are fl oored by terraces that are interpreted as slump deposits. Canyons rapidly open on a short channel and a depositional fan-shaped lobe. The entire system extends for ~40 km. The development of these small turbidite systems, similar to siliciclastic systems, is due to the lack of cementation related to alongshore current energy forcing the transport of fi ne particles and fl ow differentiation. Detailed analyses of bathymetric data show that the canyon and failurescar morphology and geometry vary following a west-east trend along the bank slope. The changing parameters are canyon length and width, depth of incision, and canyon and channel sinuosity. Accordingly, failure scars are larger and deeper eastward. These observations are consistent with a westward tectonic tilt of the bank during the Cenozoic.
dc.language.isoENen_US
dc.sourcebase
dc.sourceresearchgate
dc.sourcecrossref
dc.title.enCanyon morphology on a modern carbonate slope of the Bahamas: Evidence of regional tectonic tilting
dc.typeArticle de revueen_US
dc.identifier.doi10.1130/g33327.1en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalGeologyen_US
bordeaux.page771-774en_US
bordeaux.volume40en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue9en_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=Geology&rft.date=2012-01-01&rft.volume=40&rft.issue=9&rft.spage=771-774&rft.epage=771-774&rft.eissn=0091-7613&rft.issn=0091-7613&rft.au=MULDER,%20Thierry&DUCASSOU,%20Emmanuelle&GILLET,%20Herve&HANQUIEZ,%20Vincent&TOURNADOUR,%20Elsa&rft.genre=article


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