Permanence of structural lines in Morocco from Precambrian to Present

Study of the structural domains in Morocco leads to the recognition of several structural lines which represent, for the most part, limits between the different Tertiary folded belts. Some of these limits are permanent zones of weakness which acted more or less continuously from Precambrian to Present. Inherited from Precambrian orogenies, represented in the West-African shield, they were reactivated repeatedly in its epicratonic margin and mostly in the northern domains where they controlled basin sedimentation and belt deformation during the Hercynian and Atlasic orogenies.