THE INTRUSIVE DOLERITKS AND ALLIED ROCKS 267 



can be no doubt that they connect the well-known 

 intrusions of Beaufort West with those of the native 

 territories. 



In Molteno, Queenstown, Glen Grey, Xalanga and 



Kamaston 



"S?. Marks 



SOMilss. 



FIG. 20. Showing the undulations of the Glen Grey dolerite sheet. 

 The arrows indicate the direction of dip of the sheet, the crosses the 

 places where it is horizontal. 



Elliot dolerites are extremely abundant, especially in the 

 Molteno beds. A peculiar feature is the tendency for an 

 intrusion to occur immediately above the Indwe sand- 

 stone. In this way we find that the sandstone in many 

 cases forms the scarped edges of extensive dolerite 



