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U–Pb age constraints on the Carboniferous-Permian transition in continental basins of eastern equatorial Pangaea (France): implications for the depositional history and correlations across the late Variscan Belt

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMERCUZOT, Mathilde
hal.structure.identifierUniversità degli Studi di Cagliari = University of Cagliari = Université de Cagliari [UniCa]
dc.contributor.authorROSSIGNOL, Camille
hal.structure.identifierGéosciences Rennes [GR]
dc.contributor.authorBOURQUIN, Sylvie
hal.structure.identifierMassachusetts Institute of Technology [MIT]
dc.contributor.authorRAMEZANI, Jahandar
hal.structure.identifierGéosciences Rennes [GR]
dc.contributor.authorDUCASSOU, Céline
hal.structure.identifierGéosciences Rennes [GR]
dc.contributor.authorPOUJOL, Marc
hal.structure.identifierBureau de Recherches Géologiques et Minières [BRGM]
dc.contributor.authorBECCALETTO, Laurent
hal.structure.identifierBiogéosciences [UMR 6282] [BGS]
dc.contributor.authorPELLENARD, Pierre
dc.date.accessioned2024-03-11T12:26:33Z
dc.date.available2024-03-11T12:26:33Z
dc.date.issued2023
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188668
dc.description.abstractEnIntramountain late Carboniferous–Permian basins of western Europe developed during the latest orogenic stages of the Variscan Mountain Belt in eastern Pangaea, at equatorial palaeolatitudes. Their stratigraphic framework is mainly based on continental subdivisions (e.g. Stephanian and Autunian continental stages), which can be contentious due to biostratigraphic biases, resulting in long-distance diachronous subdivisions. To provide precise inter-basinal and global correlations to the internationally recognized chronostratigraphic marine stages, this study reports new U–Pb geochronology from the Aumance and Decize–La Machine basins, located in the northern French Massif Central. Zircon grains extracted from three volcanic ash-fall layers give weighted mean 206 Pb/ 238 U ages of 299.11 ± 0.35 Ma; 298.73 ± 0.36 Ma and 298.59 ± 0.35 Ma (2σ total propagated uncertainty) by the chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) method, coinciding with the Carboniferous–Permian transition (Gzhelian and Asselian stages). These ages imply that the northern Massif Central basins developed synchronously in relatively short periods of time (<10 Myr), reflecting substantial sedimentation rates. Finally, the new chronology of infilling of these basins confirms that they were connected during the late Carboniferous and early Permian periods, improving the knowledge on the late-orogenic Variscan geodynamic setting in this area
dc.language.isoENen_US
dc.title.enU–Pb age constraints on the Carboniferous-Permian transition in continental basins of eastern equatorial Pangaea (France): implications for the depositional history and correlations across the late Variscan Belt
dc.typeArticle de revueen_US
dc.identifier.doi10.1144/jgs2023-075en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géochimieen_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Stratigraphieen_US
bordeaux.journalJournal of the Geological Societyen_US
bordeaux.pagejgs2023-075en_US
bordeaux.volume180en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue6en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierinsu-04210653
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&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Journal%20of%20the%20Geological%20Society&amp;rft.date=2023&amp;rft.volume=180&amp;rft.issue=6&amp;rft.spage=jgs2023-075&amp;rft.epage=jgs2023-075&amp;rft.au=MERCUZOT,%20Mathilde&amp;ROSSIGNOL,%20Camille&amp;BOURQUIN,%20Sylvie&amp;RAMEZANI,%20Jahandar&amp;DUCASSOU,%20C%C3%A9line&amp;rft.genre=article


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