This is the first attempt to summarise the geology of Africa by presenting it in an atlas and to synthesise the stratigraphy, tectonics, economic geology, geohazards and geosites of each country and territory of the continent. Furthermore, the digitised geological maps are correlated and harmonised according to the current stratigraphic time table. The atlas aims to contribute to capacity building in African Earth Sciences and to initiate research and economic opportunities by providing a database of basic geological background information.