Glacial Beds. 265 



such large masses of the northern rocks must have taken place during 

 the Bokkeveld-Witteberg times, represented in the south by some 5000 

 feet ot rock. This seems to me improbable, and the only way to 

 avoid the difficulty is to regard the Matsap beds as older than the 

 Cape system. 



Assuming that this argument is good, the Griqua Town beds, 

 which are overlaid unconformably by the Matsap beds, must be very 

 much older than the Qape system, and though there is no direct 

 evidence, they may quite well be of Pre-Cambrian age. 



