Resédimentations d'âge sénonien dans le Rif central (Maroc): conséquences sur les divisions paléogéographiques et structurales de la chaîne

Abstract

The occurence of resedimented gypsiferous polygenic breccias in Senonian marls of the central Rif (Morocco) leads us to refute current paleogeographic and structural subdivisions of the Rifian Range. We propose to regroup zones such as the internal and external Mesorif and Ketama-Tangier unit into a single zone named Subrif. From a tectonic point of view, NE-SW and NW-SE strike-slip faults are considered as taking the prominent part, contrary to thrust faulting (= nappe), which restricts the degree of allochtony of the Central Rif nappes.