Dataset : Continental weathering as a driver of Late Cretaceous cooling: new insights from clay mineralogy of Campanian sediments from the southern Tethyan margin to the Boreal realm

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Quotation

Biogéosciences, Jean-François Deconinck, Pierre Pellenard, Emmanuelle Pucéat, Michel Guiraud, Rémi Laffont, Ludovic Bruneau, Théophile Cocquerez, Philippe Amiotte Suchet, Nicolas Thibault, Ian Jarvis, Mohammad Razmjoeei, James Richard, Jean-Pierre Sizun, Maxime Jaubert, Elise Chenot (2018): Continental weathering as a driver of Late Cretaceous cooling: new insights from clay mineralogy of Campanian sediments from the southern Tethyan margin to the Boreal realm. Biogéosciences. doi:10.1016/j.gloplacha.2018.01.016

General metadata

Identifier : local : FR-18008901306731-2018-07-18 external : doi:10.1016/j.gloplacha.2018.01.016
Description :
New clay mineralogical analyses have been performed on Campanian sediments from the Tethyan and Boreal realms along a palaeolatitudinal transect from 45° to 20°N (Danish Basin, North Sea, Paris Basin, Mons Basin, Aquitaine Basin, Umbria-Marche Basin and Tunisian Atlas). Significant terrigenous inputs are evidenced by increasing proportions of detrital clay minerals such as illite, kaolinite and chlorite at various levels in the mid- to upper Campanian, while smectitic minerals predominate and represented the background of the Late Cretaceous clay sedimentation. Our new results highlight a distinct latitudinal distribution of clay minerals, with the occurrence of kaolinite in southern sections and an almost total absence of this mineral in northern areas. This latitudinal trend points to an at least partial climatic control on clay mineral sedimentation, with a humid zone developed between 20° and 35°N. The association and co-evolution of illite, chlorite and kaolinite in most sections suggest a reworking of these minerals from basement rocks weathered by hydrolysis, which we link to the formation of relief around the Tethys due to compression associated with incipient Tethyan closure. Diachronism in the occurrence of detrital minerals between sections, with detrital input starting earlier during the Santonian in the south than in the north, highlights the northward progression of the deformation related to the anticlockwise rotation of Africa. Increasing continental weathering and erosion, evidenced by our clay mineralogical data through the Campanian, may have resulted in enhanced CO2 consumption by silicate weathering, thereby contributing to Late Cretaceous climatic cooling.
Disciplines :
geology (sciences of the universe), mineralogy (sciences of the universe)
Keywords :

Dates :
Data acquisition : from 15 Aug 2014 to 15 Aug 2016
Metadata record :
Creation : 18 Jul 2018

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

Coverages

Spatial coverage :

  • Europe: on Earth, latitude between 60° N and 34° N, longitude between 11° W and 30° E

Time coverage :

  • Campanien: between -84 Ma and -72 Ma

Administrative metadata

Data creatorsAffiliation
Laboratoire Biogéosciences
Jean-François DeconinckBiogéosciences
Pierre PellenardBiogéosciences
Emmanuelle PucéatBiogéosciences
Michel GuiraudBiogéosciences
Rémi LaffontBiogéosciences
Ludovic BruneauBiogéosciences
Théophile CocquerezBiogéosciences
Philippe Amiotte SuchetBiogéosciences
Nicolas ThibaultIGN
Ian JarvisDpt Geography and Geology
Mohammad Razmjoeei
James RichardChrono-environnement
Jean-Pierre SizunChrono-environnement
Maxime Jaubert
Elise ChenotBiogéosciences
Publisher : Laboratoire Biogéosciences
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 on line in the "supplementary material" if you have an access to the whole paper.

Technical metadata

Formats : application/vnd.ms-excel, image/jpeg
Data acquisition methods :
  • Experimental data : Minéralogie des argiles (DRX) - isotopie du carbone et de l'oxygène (spectrométrie de masse)
Datatype : Dataset

Publications

  • Continental weathering as a driver of Late Cretaceous cooling: new insights from clay mineralogy of Campanian sediments from the southern Tethyan margin to the Boreal realm (doi:10.1016/j.gloplacha.2018.01.016)
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