Les séries sédimentaires sont constituées au Néogène de formations marines de milieu peu profond, au cours du Miocène inférieur et moyen, et laguno-continentales dans l'intervalle Miocène supérieur-Pliocène. Ces séries s'ordonnent en trois cycles majeurs, à bases érosives et discordants entre eux, reflétant surtout le contrôle de la tectonique. L'analyse de la distribution des dépôts dans la région du Kef montre que la tectonique est compressive et se traduit par la surrection d'anticlinaux d'amortissement décollés dans les évaporites du Trias.
The Triassic rocks of the Debadib-Ben Gasseur area (northwestern Tunisia): diapir with overhangs spreading downslope in the Albian Sea and deformed during the Tertiary compressional deformations. The Triassic outcrops of the Debadib-Ben Gasseur area, located in the Kef area (northwestern Tunisia) have recently been interpreted as submarine 'salt glaciers' interbedded within the Albian deposits (J.-M. Vila et al., C. R. Acad. Sci. Paris, Ser. II 318 (1994) 1661-1667). New cartographic, drills and gravimetric data recognised evidence for an Albian diapiric stage for the Triassic rocks. The Triassic rocks as pulling out of the sedimentary cover could spread laterally as small size 'salt glaciers' before they have been deformed during the Tertiary compressional deformations. To cite this article: M.
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