The Transvaal Supergroup is a stratigraphic unit in northern South Africa and southern Botswana, situated on the Kaapvaal Craton, roughly between 23 and 29 degrees southern latitude and 22 to 30 degrees eastern longitude.
It consists of three parts, Transvaal sedimentation began with predominantly clastic sedimentary rocks (Black Reef-Vryburg Formations) followed by carbonate rocks and banded iron formations (Chuniespoort-Ghaap-Taupone Groups).
After an erosional hiatus, the clastic sedimentary rocks and volcanics of the Pretoria-Postmasburg-Segwagwa Groups were deposited within the three basins, largely under closed-basin conditions.
A final stage of predominantly volcanic succession (Rooiberg Group-Loskop Formation) is limited to the Transvaal Basin.
The Campbellrand-Malmani carbonate platform is part of the Chuniespoort Group and originally covered all of the Kaapvaal Craton.