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High occurrence of Orbulina suturalis and "Praeorbulina-like specimens" in sediments of the northern Arabian Sea during the Last Glacial Maximum

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorROSSIGNOL, Linda
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorZARAGOSI, Sebastien
IDREF: 189039159
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorEYNAUD, Frederique
IDREF: 144113570
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBOURGET, Julien
dc.contributor.authorCHRISTOPHE, Fontanier
dc.contributor.authorELLOUZ-ZIMMERMANN, Nadine
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorLANFUMEY, Valentine
dc.date.accessioned2024-10-25T07:50:00Z
dc.date.available2024-10-25T07:50:00Z
dc.date.issued2011-01-01
dc.identifier.issn0377-8398en_US
dc.identifier.uriftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/70986
dc.identifier.urioai:crossref.org:10.1016/j.marmicro.2011.01.006
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/202793
dc.description.abstractEnThis study focuses on the exceptionally high occurrence of Orbulina suturalis and morphotypes very close to Praeorbulina in Late Glacial sediments from the Northern Arabian Sea. The genus Praeorbulina has been described by Blow (1956) as an ancestor of Orbulina universa. Our study is based on the analysis of three sediment cores retrieved in the Gulf of Oman (KS01, MD04-2849, and MD04-2861), covering the Late Pleistocene (last 30 ka CAL-BP). Planktonic foraminiferal assemblages were investigated and revealed that this remarkable abundance of Orbulina suturalis, and numerous specimens morphologically close to Praeorbulina, occurs during a short time interval roughly representing the Last Glacial Maximum. One AMS 14C date was obtained on a monospecific sample of Praeorbulina-like specimens, giving an age of 19 CAL-ka BP, which confirms the Late Glacial age and unreworked character of this population. In this paper, we discuss the morphological similarities relating the observed Praeorbulina-like specimens to the genera Orbulina and Praeorbulina. We will also discuss the period of occurrence of these specimens and the potential environmental changes that may have caused their atypical morphology.
dc.language.isoENen_US
dc.sourcebase
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dc.title.enHigh occurrence of Orbulina suturalis and "Praeorbulina-like specimens" in sediments of the northern Arabian Sea during the Last Glacial Maximum
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.marmicro.2011.01.006en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalMarine Micropaleontologyen_US
bordeaux.page100-113en_US
bordeaux.volume79en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue3-4en_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
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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%20Micropaleontology&rft.date=2011-01-01&rft.volume=79&rft.issue=3-4&rft.spage=100-113&rft.epage=100-113&rft.eissn=0377-8398&rft.issn=0377-8398&rft.au=ROSSIGNOL,%20Linda&ZARAGOSI,%20Sebastien&EYNAUD,%20Frederique&BOURGET,%20Julien&CHRISTOPHE,%20Fontanier&rft.genre=article


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