Page:South African Geology - Schwarz - 1912.djvu/115

 many respects to that of the Great Rift. The most perfect is that of Baviaan's Kloof. A strip of country a mile or two broad has been faulted between steep folds and faults, but the main trend of the fault valley has been interrupted repeatedly by blocks that have remained unaffected, so that the rift valley presents a succession of fault pits separated by high ground. On the eastern extension of the fault system two little volcanoes occur on the farm Mimosa, near the station of that name on the Midland line. The Baviaan's Kloof fault pits were at one time filled with loose Cretaceous gravels, but most of this material has been carried away by the rivers, and the walls of the pits stand up 800 to