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dc.rights.licenseopenen_US
dc.contributor.authorKHALIFA, Khaoula Ben
dc.contributor.authorZAÏBI, Chahira
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorBONNIN, Jerome
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCARBONEL, Pierre
dc.contributor.authorZOUARI, Kamel
dc.contributor.authorMNIF, Thameur
dc.contributor.authorKAMOUN, Fekri
dc.date.accessioned2024-06-06T13:54:03Z
dc.date.available2024-06-06T13:54:03Z
dc.date.issued2019-04-05
dc.identifier.issn0035-6883en_US
dc.identifier.urioai:crossref.org:10.13130/2039-4942/11958
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/200324
dc.description.abstractEnFour sediment cores, drilled at Younga and Ouadrane Sebkhas (Hachichina wetland), were selected for micropalaeontological, sedimentological, geochronological and geochemical investigation coupled to hierarchical cluster and correspondence analysis. Our research aimed at reconstructing the past biodiversity, the Holocene palaeoenvironmental evolution and the responsible forcing. Subsurface sediments record four major phases: i) the first one is characterized by poorly to very poorly sorted silts, the dominance of the lagoonal/estuarine ostracod and the lagoonal/marine foraminifera and high values of terrestrial geochemical element ratios, such as K/Al and Fe/Al, which indicate an estuarine lagoon; ii) two major marine transgressions, TR1 and TR2, allowing the settlement of widely opened lagoons towards 7160-8680 and 5070-5520 cal yr BP, are marked by the enhancement of the marine/brackish ostracods and marine foraminifera, the improvement of species number, individuals number and H and E index values and of the marine element ratios such as Cl/Al and Sr/Al; iii) the opening of the lagoon is hampered by the action of drift currents allowing the genesis of sand spit and the settlement of a closed lagoon, towards 2610-3610 cal yr BP, characterized by the enhancement of lagoonal/estuarine ostracods and lagoonal/marine foraminifera and the increase of the individuals number; iv) the dominance of the lagoonal/estuarine ostracods and the lagoonal/marine foraminifera and the decline of the species number and density mark a brackish lagoon, also characterized by very poorly sorted silts transported by uniform suspension, which evolves to the actual sebkha. This evolution, within a global climate alteration context, from an estuarine environment to the present sebkha passing by an opened lagoon, is linked to the complex hydrographic setting of the sebkhas and of the Ouadrane Wadi outlet discharging in the Hachichina wetland.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enSebkha
dc.subject.enSea Level
dc.subject.enSand Spit
dc.subject.enGulf Of Gabes
dc.title.enHolocene Environment Changes in the Hachichina Wetland (Gulf of Gabes, Tunisia) Evidenced by Foraminifera and Ostracoda, Geochemical Proxies and Sedimentological Analyses
dc.title.alternativeRiv. ital. paleontol. stratigr. (Testo stamp.)en_US
dc.typeArticle de revueen_US
dc.identifier.doi10.13130/2039-4942/11958en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalRivista Italiana di Paleontologia e Stratigrafiaen_US
bordeaux.page517-549en_US
bordeaux.volume125en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue2en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04603876
hal.version1
hal.date.transferred2024-06-06T13:54:07Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
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=Rivista%20Italiana%20di%20Paleontologia%20e%20Stratigrafia&rft.date=2019-04-05&rft.volume=125&rft.issue=2&rft.spage=517-549&rft.epage=517-549&rft.eissn=0035-6883&rft.issn=0035-6883&rft.au=KHALIFA,%20Khaoula%20Ben&ZA%C3%8FBI,%20Chahira&BONNIN,%20Jerome&CARBONEL,%20Pierre&ZOUARI,%20Kamel&rft.genre=article


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