Fig. 7

Sand:marl ratio of several outcrops from the Voirons Flysch with approximate palaeo-environmental interpretation. Dashed line corresponds to an equilibrium between marly interbeds and sandy beds. Note that the Bons Mb. (Bons) and the Boëge Marl (BM) share similar distributions. The Voirons Sandstone (VS) shows a widespread distribution from marl-dominated to sandy outcrops. The Allinges Mb. (All) and the Vouan Conglomerate (VC) are exclusively dominated by sand, the former being less proximal than the latter. Finally, only one exposure with frequent marly interbeds (Fig. 13f) of the Bruant Sandstone (BrS) is here considered due to the chaotic bedding in this unit. The Fenalet Sandstone (FS) is restricted to the main outcrop