Présence de Paléocène marin dans les Grands Causses (France) |
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Authors: | Bernard Peybernès Richard Ciszak Marie-José Fondecave-Wallez Pierre-Jean Combes Hubert Camus Michel Séranne |
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Institution: | 1. UMR 5573, Stramipal, université Paul-Sabatier, 39, allées Jules-Guesde, 31062 Toulouse cedex 04, France;2. UMR 5563, université Paul-Sabatier, 39, allées Jules-Guesde, 31062 Toulouse cedex 04, France;3. UMR 5573, université Montpellier-2, place Eugène-Bataillon, 34095 Montpellier cedex 05, France |
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Abstract: | In the Grands Causses, incised valleys, lapies, fissures and sinkholes inherited from successive polyphase karstifications were filled by Palaeocene marine sediments overall assigned to the P1c–P3 interval (Upper Danian–Lower Selandian). These sediments are distributed into three detritic facies, generated by extensional tectonics controlling karstic and erosional processes. Upper Cretaceous marine fossils known within these facies are interpreted as reworked from hypothetically pellicular deposits. The probable palaeogeographic connection with the Pyrenean Palaeocene ‘Breccia trough’ supposes the presence of a SE–NW ‘ria’ running across the continental areas of Lower Languedoc and draining towards the northwest the marine waters of the Palaeocene transgression as far as the Rodez region. To cite this article: B. Peybernès et al., C. R. Geoscience 335 (2003). |
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Keywords: | Paléocène foraminifères planctoniques ria paléokarsts Grands Causses France Palaeocene planktonic foraminifera ria palaeokarsts Grands Causses France |
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