Preface of the volume "Volcanism and evolution of the African Lithosphere" Special Paper 478

The distribution of volcanism in the African plate is the surface expression of a variety of processes, many of which are poorly understood, involving interaction between the lithosphere and the underlying convective mantle. Despite the maturity of the plate tectonic paradigm, our knowledge of the processes involved in the breakup of continents and the formation of new ocean basins remains limited. The African Rift system provides a unique natural laboratory to study the transition from continental breakup to seafloor spreading. Thus, it is important to explore the similarities among the volcanic provinces of the Saharan zone, Cameroon volcanic line, Angola and Namibia, and the East African Rift system. The aim of this volume is to bring together recent and updated contributions on African volcanism (and associated mantle xenoliths), providing multidisciplinary contexts that include volcanology, geochemistry, petrology, geophysics, and structural geology, for a better understanding of the geological evolution of the African lithosphere