(a) Structural map of the West Mediterranean showing the main tectonic plates and deformed areas. Grey: areas deformed during Alpine compression. Yellow: area deformed during Neogene extension (West European Rift and opening of the Liguro-Provençal oceanic basin). BCB: Basque-Cantabrian Basin; BP: Balearic Promontory; Ca: Calabria; CCR: Catalan Coastal Range; CS: Central System; GK: Greater Kabylies; LK: Lesser Kabylies; PCE: Provence; Pe: Peloritan. (b) Geodynamic chart of oceanic domains in the West Mediterranean (W Tethys and N Atlantic) domain since the Permian. Light blue: rifting; dark blue: mantle exhumation/spreading; red: subduction.