Abstract

Stratigraphic study of the Bedoulian (Aptian, Cretaceous) units southeast of Marseilles (France) on the southern slope of the Saint-Cyr-Carpiagne chain reveals rapid lateral variation of facies between Cassis and Bedoule. The five formations previously described from the area are revised on the basis of more detailed information. The first formation, a calcarenite with rudistids and gastropods, is uniform between the two localities and represents the Urgonian-Bedoulian transition. The second and third formations, beige or gray limestones, sometimes marly, with abundant ammonites--Deshayesites, Parahoplites--vary considerably in thickness. The marly limestones of the fourth formation remain relatively uniform, while the fifth formation disappears west of Saint-Jean. The fauna collected from these units is the classic Bedoulian assemblage. The maximum thickness of the Bedoulian occurs at Comte indicating major subsidence during that time. The Bedoulian aureole is affected by two series of fractures, one perpendicular to the direction of the bedding and the other parallel to it.

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