Fig. 1

Simplified geological map of the Geneva Basin and its vicinity. White stars represent location of the studied outcrops. (1) Salève Mountain; (2) Prapont; (3) Morillon; (4) Valefin; (5) Roche Blanche; (6) Le Reculet Nord and (7) Le Col de la Faucille. On the right, a synthetic log of the Upper Jurassic units as exposed in Mount Vuache. Stratigraphic logs modified from Makhloufi et al. (2018) for: the Calcaires de Tabalcon unit the Salève Mountains, modified from Deville (1990). The reef-front and reef-core sections of the Calcaires Récifaux in the Prapont section, modified from Fookes (1995). The top of the Calcaires de Tabalcon and the Calcaires Récifaux in the Reculet Nord section, modified after Meyer (2000). The Calcaires Récifaux, Calcaires de Landaize and Tidalites de Vouglans (TdV) unit in the Roche Blanche and Valefin sections modified after Makhloufi et al. (2018)