Sediments of the Khommabes depression provide evidence for a varied history of deposition and secondary alternation during the Quaternary. During a period or wetter dimate, fluvial sediments, probably deposited on a former flood-plain of the Kuiseb River, were cemented by calcite to form a calcrete. The lower part or this calcrete was later altered to dolomite. Subscquently, aeolian sand, possibly derived from the flood-plain, was deposited at the basin. Keywords: Aeolian dunes, Precambrian bedrock, Precambrian Salem granite, Kuiseb schist, Tsondab Sandstone Formation, Carbonate-cemented Karpfenkliff Conglomerate, Deposition, Pedogenesis, Erosion, Pleistocene hydraulic ponding, Bedrock weathering.