Features of the Mendibelza Formation corresponding to sedimentary facies of Boirie and Souquet (1982). (A) F1 chaotic breccia with reworked clasts of Paleozoic metasediments; (B) F5 laminated sandstone eroded by F3 stratified and imbricated conglomerate with pebbles and cobbles of Paleozoic metasediments; (C) F7 dark pelite eroded by F4 fining-upward conglomerate interbedded with medium- to coarse-grained sandstone with planar laminations at the base and current ripples on top; (D) F6 silty sandstone; (E) F7 dark pelite; (F) paleocurrent measurements in the Pic des Escaliers area (Boirie, 1981).