Nouvelles données sédimentologiques et géodynamiques sur les faciès de l’Aalénien-Bajocien inférieur du Haut Atlas marocain (Nord d’Errachidia)New sedimentologic and geodynamic data on the Aalenian-Lower Bajocian facies of the High Atlas of Morocco (Northern Errachidia)*

The Aalenian-Lower Bajocian facies of the Moroccan High Atlas (Northern Errachidia) are represented by allochtoneous deposits which are separated by hemipelagic marls and fine limestones. The oobiodetritic allodapic limestones show a pack-grainstone texture with reworked and worn components from remote or local origin. These facies resulted from a recurrent faulting activity which was at the origin of the individualisation of a series of ridges and depocenters within the High Atlas trough. The depocenters were filled with marls and fine limestones intersected by gravity deposits from different sourced directions. The uplifted zones (ridges) were covered only by thin beds of shallow marine carbonates. The tectonic and gravitational control of sedimentation might also have been enhanced by eustatism during the Aalenian-Lower Bajocian.