(a) The salt vertical thickness (isopachs) map shows regional discontinuity variation in the basin, corresponding to salt-structures distribution. (b) The identified salt morphology domains are interpreted as well as other structural elements. The present-day and Messinian thalwegs are from Leroux 2012 and Lofi 2002. Transfer zones are from Pellen et al., 2019. Grey polygons represent uncertain volcanic basement from Maillard et al., 2020 and this study. Faults are from Dos Reis 2001). Red polygon filled with black lines represents the greater salt thickness area in the fold domain. Green lines represent the crustal segmentation (from Moulin et al., 2015. The plots in the bottom-right corner display the main minibasins and salt walls direction in the LDSD. Petit Rhône Fan is from Droz et al., 2020. Top left inset shows a detail of the bathymetric expression of two N-S oriented diapirs. NBFZ: North Balearic Fault Zone. CFZ: Catalan Fault Zone.

(a) La carte d’épaisseur verticale du sel (isopaches) montre une discontinuité régionale dans le bassin, correspondant à la distribution des structures salifères. (b) Les domaines de morphologie du sel identifiés sont interprétés ainsi que d’autres éléments structuraux.