Sinemurian–Pliensbachian calcareous nannofossil biostratigraphy and organic carbon isotope stratigraphy in the Paris Basin: Calibration to the ammonite biozonation of NW Europe

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dc.contributor.author Peti, Leonie en
dc.contributor.author Thibault, N en
dc.contributor.author Clémence, M-E en
dc.contributor.author Korte, C en
dc.contributor.author Dommergues, J-L en
dc.contributor.author Bougeault, C en
dc.contributor.author Pellenard, P en
dc.contributor.author Jelby, ME en
dc.contributor.author Ullmann, CV en
dc.date.accessioned 2017-05-09T04:21:13Z en
dc.date.issued 2017-02 en
dc.identifier.citation Palaeogeography, Palaeoclimatology, Palaeoecology 468:142-161 Feb 2017 en
dc.identifier.issn 0031-0182 en
dc.identifier.uri http://hdl.handle.net/2292/32823 en
dc.description.abstract The biostratigraphy of Sinemurian to lower Toarcian calcareous nannofossils has been investigated in the Sancerre-Couy core (Paris Basin), which contains a mixed assemblage of species with affinities to the northern and southern areas of the peri-tethyan realm, thus allowing for the use and calibration of the Mediterranean Province (Italy/S France) and NW Europe (UK) biozonation schemes. This study is based on semi-quantitative analyses of the calcareous nannofossil assemblage performed on 145 samples and the recorded bioevents are calibrated to the NW European Ammonite Zonation and to a new organic carbon isotope curve based on 385 data points. The main bioevents, i.e. the first occurrences of Parhabdolithus liasicus, Crepidolithus pliensbachensis, Crepidolithus crassus, Mitrolithus lenticularis, Similiscutum cruciulus sensu lato, Lotharingius hauffii, Crepidolithus cavus and Lotharingius sigillatus as well as the last occurrence of Parhabdolithus robustus, have been identified. However, we show that a large number of standard biostratigraphic markers show inconsistent occurrences at the base and top of their range, possibly accounting for some of the significant discrepancies observed between the different domains. In addition to the nine main bioevents used for the biozonation of the core, we document an additional 50 distinct bioevents, evaluate their reliability and discuss their potential significance by comparison to previous studies. A total of five significant negative organic carbon isotope excursions are identified and defined in the Paris Basin including the well-documented Sinemurian–Pliensbachian boundary event. One positive excursion is further defined in the Pliensbachian interval. Our calibration of high-resolution calcareous nannofossil biostratigraphy to ammonite biostratigraphy and organic carbon isotopes represents a new stratigraphic reference for the Lower Jurassic series. en
dc.publisher Elsevier BV en
dc.relation.ispartofseries Palaeogeography, Palaeoclimatology, Palaeoecology en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Sinemurian–Pliensbachian calcareous nannofossil biostratigraphy and organic carbon isotope stratigraphy in the Paris Basin: Calibration to the ammonite biozonation of NW Europe en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.palaeo.2016.12.004 en
pubs.begin-page 142 en
pubs.volume 468 en
dc.rights.holder Copyright: Elsevier BV en
pubs.end-page 161 en
pubs.publication-status Accepted en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 608272 en
pubs.record-created-at-source-date 2017-05-09 en


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