PRE-CAPE ROCKS OF THE NORTH OF THE COLONY 87 





eastern hills of the Korannabergen. 

 There is a great contrast between 

 the condition of the beds on the 

 two sides of the group of synclines 

 occupied by the Griqua Town series 

 stretching northwards from the 

 Prieska district through Griqualand 

 West into Bechuanaland. On the 

 east side the beds lie at very low 

 angles ; in the middle anticlines 

 they are rather more bent, and on 

 the western side, where they are 

 seen only at the southern end and 

 for a short distance in the Koran- 

 naberg, they are much disturbed. 

 In the Prieska area and in the 

 neighbouring part of Hay on the 

 south-west side of the Griqua Town 

 belt they are entirely absent for 

 several miles together, having been 

 faulted out between the Black 

 Eeef, Ventersdorp series, or the 

 granite on the south-west and the 

 Griqua Town beds on the north- 

 east. 



The thickness of this limestone 

 formation is difficult to estimate, 

 but probably a value of between 

 2,000 and 3,000 feet will not be far 

 from the truth. 



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