The stratigraphy of the Rupelian (Stampian) in the Manosque - Forcalquier Basin.

(oldest strata at the foot)

White chalks of Vachères.
Marls with numerous lignite layers in the area between Manosque and Forcalquier (200 m). To the north they change into marls and sandstone plates, to the south in clayey marls. The flora of Manosque is at this level. Sometimes small fishes and insects are found.
Chalk plates with the little snail Hydrobia dubuissoni of Apt, St.-Radegonde etc.; flora of Cereste, fishes (very rare now).
Marls and gypsum from Gargas and Mort d'lmbert.