ABSTRACT
Our geochronological and geochemical work on Pan-African granites in Somalia (NE branch of the Mozambique belt) shows a clear break between orogenic events and geodynamic evolution of northern and southern Somalia. Granitoids are older (630–550 Ma) and mainly of mantle origin in the north, and younger (550–470 Ma) and mainly of crustal origin in the south. The granitoids express a transitional regime characterized in the north by a strong subduction imprint close to the Arabian-Nubian shield, while in the south intense crustal reworking prevailed in the frame of the Mozambiquian continental hypercollision.
