Central African Republic

Geography

The Central African Republic is a land-locked nation located almost in the precise centre of the African continent. It borders Chad in the north, Sudan in the east, the Democratic Republic of the Congo and the Republic of the Congo in the south, and Cameroon in the west. The CAR covers a land area of 622,984 km² and mostly consists of a vast, flat to rolling, monotonous plateau typically about 500m above sea level with scattered hills in northeast and southwest. Two thirds of the country lies in the basin of the Ubangi River, which flows south into the Congo River, while the remaining third lies in the basin of the Chari River, which flows north into Lake Chad. The eastern border lies along the edge of the Nile river watershed. 

Geology

About 60% of the CAR is underlain by basement rocks of  Precambrian age, comprising high-grade granitic-gneiss, migmatites and amphibolitic Archean units succeeded by weakly metamorphosed supercrustal meta-sediments and schist of Neo-Proteozoic age. Parts of the western and central areas of the country are covered by, most probably, Palaeozoic aged glaciogene sediments unconformably overlain by flat-lying Cretaceous sandstones.