316 CONDITIONS OF DEPOSITION 



elsewhere in the Colony, probably 3,000 feet above the 

 sea. 



In the Baviaan's Kloof there are four long areas of 

 Enon conglomerate and two small ones, and there is 

 another in the Koega Valley. 1 These disconnected 

 patches of Uitenhage beds are of great interest, for the 

 beds often dip at high angles and have been faulted and 

 folded in amongst the rocks of the Cape system. 



There is still very much to be learnt about the nature 

 and distribution of the Uitenhage beds in the Colony ; 

 the Uitenhage district itself has yielded but a small part 

 of its history, although it has attracted more attention 

 from geologists than any other area in the Colony, 

 excepting perhaps the Cape Peninsula and the Dia- 

 mond Fields. At present the limits of the marine 

 beds are not known exactly, but they certainly extend 

 to the east as well as to the west of the Uitenhage 

 area. 



At the commencement of the Uitenhage period the 

 southern parts of what is now Cape Colony must have 

 been very mountainous. Great valleys with mountains 

 on either side stretched east and west for long distances, 

 and so far had denudation proceeded that all the rock 

 series from the Pre-Cape to the Karroo formation were 

 exposed at the surface. The height of the mountains 

 above the bottom of the valleys was greater than it now 

 is ; the amount of rock removed from the mountain 

 ridges since the beginning of the Uitenhage period 



1 Q. C., viii., p. 119, etc. ; ix., p. 64- 



