Location of the study area on both sides of Lyon Metropolis, over the last map of Pliocene depositional facies that has been established prior to this study by Ballesio et al. (1984). Note that the marine facies are oddly interrupted in the Rhône Valley, and that a sharp continental-marine contact has been placed much farther south of Lyon.

Carte de situation de la zone d’étude autour de la métropole de Lyon, superposée à la carte de faciès de Ballesio et al. (1984).