The Central High Atlas of Morocco has been the site of an extensive transitional to alkali mafic magmatism from Middle Jurassic (B1 event) to Lower Cretaceous (B2 event). This study presents petrographical, mineralogical, geochemical and Sm-Nd isotopic investigations of mafic dykes and basaltic flow from the “Plateau des lacs” syncline, Central High Atlas, in order to characterize the geochemical features of the magmas and constrain their genesis. The primary paragenesis of basic rocks remains i