Dataset : Clay mineralogical and geochemical expressions of the "Late Campanian Event" in the Aquitaine and Paris basins (France): Palaeoenvironmental implications

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Quotation

Biogéosciences, Jean-François Deconinck, Pierre Pellenard, Emmanuelle Pucéat, Mathieu Martinez, Philippe Amiotte Suchet, Ludovic Bruneau, Théophile Cocquerez, Francis Robaszynski (2018): Clay mineralogical and geochemical expressions of the "Late Campanian Event" in the Aquitaine and Paris basins (France): Palaeoenvironmental implications. Elsevier. doi:10.1016/j.palaeo.2016.01.040

General metadata

Identifier : local : FR-18008901306731-2018-07-18-02 external : doi:10.1016/j.palaeo.2016.01.040
Description :
Campanian sediments from two French sedimentary basins were studied, using clay mineralogy and stable isotope (δ13C and δ18O) geochemistry, in order to investigate the Late Campanian Event. The clay fraction of the Campanian sediments from the Tercis-les-Bains section (Aquitaine Basin) and from the Poigny borehole (Paris Basin) is mainly composed of smectite. This background sedimentation was, however, interrupted during the Upper Campanian in the two basins by a substantial increase in detrital inputs, including illite, kaolinite, and chlorite at Tercis-les-Bains, and illite at Poigny. This detrital event, resulting from the enhanced erosion of nearby continental areas triggered by increasing runoff, has also been recognized in the Tethys and South Atlantic oceans. It coincided with a global negative carbon isotope excursion, the Late Campanian Event (LCE). Carbon isotope stratigraphy was used to correlate the two basins with previously studied sections from distant areas. Spectral analysis of the bulk δ13C from Tercis-les-Bains suggests a duration of ca. 400 kyr for a pre-LCE negative excursion and ca. 800–900 kyr for the LCE sensu stricto. The detrital event, as characterized by clay mineralogy, spans the interval that comprises the pre-LCE and the LCE, with a duration of 1.3 Myr. Intensification of continental erosion during the LCE may have resulted either from the Late Campanian polyplocum regression and/or from a regional tectonic pulse that triggered the emersion of previous submerged shelf areas and the increase of silicate erosion. As the LCE seems to be recorded at a large geographic scale, it is proposed here that enhanced chemical weathering and an associated decrease in atmospheric pCO2 levels could have contributed to the long-term Late Cretaceous cooling trend.
Disciplines :
geology (sciences of the universe), geosciences, multidisciplinary (sciences of the universe), mineralogy (sciences of the universe)
Keywords :

Dates :
Data acquisition : from 15 Aug 2013 to 15 May 2014
Metadata record :
Creation : 18 Jul 2018

Update periodicity : no update
Language : English (eng)
Audience : University: licence, University: master, Research

Coverages

Spatial coverage :

  • France: on Earth, latitude between 51° 20' N and 41° 15' N, longitude between 5° 15' W and 9° 50' E

Time coverage :

  • Campanien: between -84 Ma and -72 Ma

Administrative metadata

Data creatorsAffiliation
Laboratoire Biogéosciences
Jean-François DeconinckBiogéosciences
Pierre PellenardBiogéosciences
Emmanuelle PucéatBiogéosciences
Mathieu Martinez
Philippe Amiotte SuchetBiogéosciences
Ludovic BruneauBiogéosciences
Théophile CocquerezBiogéosciences
Francis Robaszynski
ContributorsAffiliationRole
Mathieu Martinezdata collector
Philippe Amiotte SuchetBiogéosciencesdata collector
Nicolas ThibaultIGNrelated person
Ludovic BruneauBiogéosciencesrelated person
Théophile CocquerezBiogéosciencesrelated person
Rémi LaffontBiogéosciencesrelated person
Emmanuelle PucéatBiogéosciencesrelated person
Francis Robaszynskirelated person
Publisher : Elsevier
Science contact : Jean-François Deconinck website e-mail
Access : restricted
Access details :
To access the data, please contact the scientific data manager.
All the data are available in "supplementary data" if you have an access to the whole paper.

Technical metadata

Formats : application/msword, application/vnd.ms-excel, image/jpeg
Data acquisition methods :
  • Experimental data : Minéralogie des argiles (DRX) - Isotopie du carbone (Spétrométrie de masse)
Datatype : Dataset

Publications

  • Clay mineralogical and geochemical expressions of the “Late Campanian Event” in the Aquitaine and Paris basins (France): Palaeoenvironmental implications (doi:10.1016/j.palaeo.2016.01.040)
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