The Cretaceous-Paleogene transition in Tunisia: general overview

摘要

The Latest Cretaceous-Paleocene paleogeography of Tunisia is characterized by two subsident troughs in the north, the NW Tunisian Trough the NE Tunisian Basin, and the Gulf in the southwest. The Gafsa Gulf, adjacent to the Saharian Platform, is separated from the northern basins by the Kasserine Island. From the three domains, typical successions covering the Cretaceous-Paleogene transition are described in the present paper. In the northern basins, the Cretaceous-Paleogene or K-T boundary lies within the continuously deposited marine E1 Haria Formation, which attains a thickness of 700-1000 m. The GSSP (stratotype) of the K-T boundary at E1 Kef lies in the NW Tunisian Trough.