Evolution des microfaunes Pléistocènes le long la bordure sud du lac de Bizerte (coupe de Sidi Mansour, Nord–Est de la Tunisie): interprétation paléoenvironnementale.

We studied ostracod associations and benthic foraminifera of an Early Pleistocene sedimentary succession cropping out at Sidi Mansour along the southern side of the Bizerte Lake (Tunisia). The microfaunistic analysis allowed us to reconstruct the evolution of the palaeoenvironment during the Pleistocene in this region of northern Tunisia. Thus, the palaeoenvironment evolved from a shallow water lagoon open to the sea, represented in the basal levels of the section, towards progressively shallower environments, from transitional and brackish in the intermediate levels, to hypersaline and monotypic environments (sebkha) in the upper levels. Towards the top of the series the palaeoenvironmental conditions become again coastal and shallow marine.