Structuration profonde des dépôts de l'Albien–Maastrichtien en Tunisie centrale : nouvelle limite de l'archipel de Kasserine et implications géodynamiques |
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| Authors: | Taher Zouaghi Mourad Bédir Mohamed Hédi Inoubli |
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| Institution: | 1. Laboratoire de géoressources, INRST, BP 95, 2050 Hammam-Lif, Tunisie;2. Département des sciences de la Terre, faculté des sciences de Tunis, université Tunis–El Manar, 1060 Tunis, Tunisie |
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| Abstract: | The Albian–Maastrichtian seismic horizon analysis in central Tunisia (Gafsa–Sidi Bouzid area) using the reflection seismic sections calibrated to the well data, shows buried structures with deposit distributions and sedimentation geometries varying from the depressive to uplifted zones. Pinch outs, unconformities and hiatuses recognized on the folded high structures are caused by reactivation of the bordering faults. The Turonian–Maastrichtian unconformities correspond to the palaeogeographic limits that outline the Kasserine Islets and correspond to the N120, N180 major wrench-salt-intruded corridors and associated N90, N60 strike-slip faults. Formation of the different structures and evolution of the basins and platforms were controlled by conjugate dextral and sinistral strike-slip movements. These structures allow new palaeogeographic limits of the Kasserine Islets to be identified. To cite this article: T. Zouaghi et al., C. R. Geoscience 337 (2005). |
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| Keywords: | Albien–Maastrichtien Tunisie centrale Sismique réflexion Décrochement Discordance Archipel de Kasserine Albian–Maastrichtian Central Tunisia Seismic reflection Strike-slip Unconformity Kasserine Islets |
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