"276 ACCOUNT OF THE STRUCTURE 



killas at last disappears entirely. I uniformly found tlie rock, 

 Avhich the sea washed towards the south part of the peninsula, 

 to be granite, and five or six yards higher was the sandstone. 

 That which lay next the granite, was the red, as before, and 

 above that was the white and more indurated sandstone ; nor 

 did it seem that there was much difference between the 

 thickness of the sandstone mass here and at the Table Moun- 

 tain. I must not omit to remark, that at the entrance of Si- 

 mon's Bay, a creek in the west side of False Bay, where our 

 ship lay, there rose from the sea an oblong rock of granite, 

 about ten yards long, four or five yards wide, and eight or ten 

 feet high, called Noah's Ark : abreast of this, on the beach, I 

 found two whin dykes, a foot wide each, cutting the granite. 



" Were it not," continues Captain Hall, " too great presump- 

 tion in me to step out of the province of simple description, to 

 wander in the regions of theory, I would propose as a conjecture. 

 That the great mass of Sandstone which forms the summit of 

 the Table Mountain, and of all the hills in the peninsula, had 

 been raised from its original horizontal position, to the eleva- 

 ted situation it at present occupies, by the Granite forcing it up 

 from below ; that the rest of the peninsula had been raised 

 in the same manner, but not so high, or that it had been lift- 

 ed up a little more on the east side than the west. The high- 

 ly inclined position of the killas, at the base of the Table 

 Mountain, and the disjointed nature of its junction with the 

 granite, seem conclusive as to its having undergone a great 

 change ; while the veins of granite which traverse the strata, 

 both by their appearance when they insulate the fragments of 

 killas, and by their minuteness of ramification, seem to have 

 been in a state of fusion, accompanied by very considerable 

 violence." 



Thus 



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