Stratigraphie sismoséquentielle intégrée de la série jurassique dans l’Atlas central de la Tunisie

Tanfous-Amri Dorra, Bedir M., Inoubli Mohamed Hedi, Soussi Mohamed. Stratigraphie sismoséquentielle intégrée de la série jurassique dans l’Atlas central de la Tunisie. In: Documents des Laboratoires de Géologie, Lyon, n°156, 2002. STRATI 2002. 3ème congrès français de stratigraphie. Lyon, 8-10 juillet 2002. p. 224

A multidisciplinary study for the characterization of the Sahel aquifer systems (Northeastern Tunisia)

The Bou Omrane-Sabkhet Noual area located in the southern Tunisian Atlas is an intramontane basin including the elongated E–W synclinal basin of Bou Omrane, to the west, and the wide plain of Talh-Sabkhet Noual, to the east. This area is restricted between the anticlinal ranges of Orbata-Tyouna-Bouhedma to the north and Chemsi-Benkhir, to the south. This area exemplifies a watershed covering a surface of 1400 km2 and Sebkhet Noual constitutes its outlet. The hydrographic network is relatively dense and it is made of many wadis descending from the mountainous ranges bordering the basin especially from the northern side relatively wetter. In central-southern Tunisia, surface water and rainfall are scarce. Accordingly, the study area faces severe aridity and groundwater resources are the main source of water for drinking-domestic and agricultural uses. This work aims to evaluate the groundwaters potentialities of the region based on a hydrogeological and geophysical approach. In fact, the basin is filled with Meso-Cainozoic sediments that developed numerous aquifer systems within the Cretaceous, Miocene and Mio- Plio-Quaternary sequences. In this survey, geological and geoelectrical data calibrated with outcropping series and available hydraulic and petroleum wells were used to delineate the geometry of the shallow to semi-deep aquifer system in the region and to propose its conceptual hydrogeological model. The structural background of the region is definitively complex and the Meso-Cainozoic strata are largely dislocated by folding and faulting which was largely controlled the development of the aquiferous units. These units are expected to be deformed and fashioned by folding and shifted out by the Mesozoic inherited fault mainly reactivated during the tectonic inversion of the basin. Such configuration affected definitely the hydrodynamics and made the hydrogeological exploration of the region ambiguous

Stratigraphie sismo-séquentielle et contrôle tectono-eustatique des séries méso-cénozoiques du domaine atlasique de la Tunisie

Bedir M., Soussi Mohamed, Saadi Jalila, Inoubli Mohamed Hedi, Sghira A., Tanfous-Amri Dorra, Zouaghi Taher, Ben Boubaker K., Gaaloul Nadia S., Razgallah-Gargouri Saloua, Ben Ismail Kmar. Stratigraphie sismo-séquentielle et contrôle tectono-eustatique des séries méso-cénozoiques du domaine atlasique de la Tunisie. In: Documents des Laboratoires de Géologie, Lyon, n°156, 2002. STRATI 2002. 3ème congrès français de stratigraphie. Lyon, 8-10 juillet 2002. p. 34