N–S cross-sections of the smooth-slopes-type Mauléon basin. A: Field interpretation showing the geometries of the basin fill towards the Cenomanian-Turonian period and underlying continental crust and exhumed mantle. Note the centripetal gliding (raft tectonics) of the pre-rift (Jurassic and Early Cretaceous) series and the tectonic accumulation of Triassic salt-bearing sediments. B: Deformation regimes of the different units composing the smooth-slopes basin. Distribution of pure shear and simple shear regimes. C: Detail showing the development of the Triassic sole through gravity gliding process of the pre-rift cover towards the central part of the basin (after Lagabrielle et al., 2019a).