Enregistrement de phénomènes de resédimentation au cours du Maastrichtien supérieur et du Paléocène supérieur (J. Serj, Tunisie atlasique) : apport micropaléontologique et signature tectono-eustatique |
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Authors: | Ahlem Amri Mohamed Ben Youssef Mohamed Ghanmi |
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Affiliation: | aInstitut national de recherches scientifiques et techniques, Hammam Lif, BP 95, Tunis 2050, Tunisie;bFaculté des sciences de Tunis, campus universitaire, 1060 Tunis, Tunisie |
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Abstract: | Sedimentological and biostratigraphic analysis of Campanian–Maastrichtian reduced series of the J. Serj permitted to characterize two episodes of submarine erosion. The first is pre-Upper Maastrichtian (Rosita contusa zone), the second is pre-Upper Palaeocene (Morozovella velascoensis zone). Thus, two type-1 boundary surfaces are distinguished. These surfaces limit three stratigraphic intervals in apparent continuity. Syn-sedimentary tectonic activity is attested by gravity deposits or processes (conglomerates, slumps). To cite this article: A. Amri et al., C. R. Geoscience 337 (2005). |
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Keywords: | Mots-clé s: Biostratigraphie Hié rarchisation Remaniement Tectonique Eustatisme CondensationBiostratigraphy Hierarchical classification Reworking Tectonics Eustasy Condensation |
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