The Kaapvaal craton (Limpopo province of South Africa), along with the Pilbara craton of Western Australia, are the only remaining areas of pristine 3.6-2.5 Ga (billion years ago) crust on Earth. Similarities of rock records from both these cratons, especially of the overlying late Archean sequences, suggest that they were once part of the Vaalbara supercontinent (Zegers et al., 1998).
Read more about Kaapvaal Craton: Description, Limpopo Central Zone, Barberton Greenstone Belt, Barberton Greenstone Belt TTG and GMS Suites, Hooggenoeg Formation of The Barberton Greenstone Belt, Johannesburg Dome, ∼3.25 Ga Barberton Greenstone Belt Asteroid Impact