Pictures showing the two main deformation phases in the Montagne Noire southern flank. (a). Steep inverted limb of a S-verging fold coeval with the formation of the km-scale recumbent folds (F1), near Ferrals-les-Montagnes. Sample H52 was picked up for RSCM study. (b). Upright fold with axial planar cleavage (S2) coeval with the Axial Zone doming (F2) and location of the sample H41, close to St-Pons. The folded layers are S0-S1 surface where (S1) is coeval with recumbent folding (F1).