Source: https://www.researchgate.net/profile/Chafik-Nassira/publication/359427052_Sedimentologie_et_etude_structurale_des_formations_rouges_jurassico-cretacees_de_la_region_d'Errachidia_Haut_Atlas_Central_Maroc/links/62d2b4f5d351bd24f51ba708/Sedimentologie-et-etude-structurale-des-formations-rouges-jurassico-cretacees-de-la-region-dErrachidia-Haut-Atlas-Central-Maroc.pdf