A. Geological map of the Larzac Causse and the Languedoc area (location on Figure 1), synthesised from BRGM 1/50000 map. Locations of residual formations witnessing post-Jurassic evolution are overprinted (synthesised from Marchand et al. (2019), Bruxelles (2001), Bruxelles and Camus (2012), Camus (2003), Combes et al. (2007) and Husson et al. (2012)). B. Structural cross-section across the southern Larzac (Location on Fig. 3A) highlighting the Seuil Cévenol structural high and the reduced thicknesses of Jurassic series on the Grands Causses basin compared to the SE basin.