Las doleritas neoproterozoicas de las ventanas de Agadir Melloul y del Adrar Izazen (Anti-Atlas Central, Marruecos). Restos de una distension pre-panafricana

Abstract

Two swarms of diabasic dykes wich différents directions NE-SW and NW-SE cut the socle of Agadir Melloul and the Adrar Izazen neoprotero/.oic windows. This rocks show a hidrothermal transformation simultanely wich Pahafricàn deformation but the primary mineralógicaI composition preserved are formed by: plagioclase, augite, ilmenite and micropegmatite textures wich hornblende and biotite ocasionally. Their chemical composition are tholeitic and transitional basalts in the two directions respectively mentioned. This magmatism have an anorogenic continental character and it is related wich the extensif pre-panafrican phase that involved to northern edge of western african craton