Abstract
Cretaceous sediments in Central Morocco were deposited in various depositional environments and comprise an undetermined Lower Cretaceous base up to Maastrichtian. The sedimentary columns show a similar facies evolution. Basal unconformities, conglomeratic layers and significant differences in thicknesses reflect pre- and synsedimentary vertical tectonic movements. These tectonic movements took place along large NE/SW striking fault systems, one of the major features of the present tectonic framework. Permanent displacement of the subsidince maxima in time and space indicate the development of small tectonic blocks which were tilted and/or compressed between the fault zones. High sedimentation rates in areas of strong subsidence, however, prevented the evolution of intraplatformbasins. Although tectonic influence was important, eustatic sea level changes ruled the whole sedimentary regime.
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