Ill] 



INVERSION OF STRATA. 



29 



the main mass of material composing the higher groucd has 

 been bodily thrust over the Eocene rocks, and in this process 

 some of the beds, b and c, have been folded repeatedly on them- 



fw V 





Ph 



C8 O 



II II 



o) a 



° Si a 



selves. Similar instances of the overthrusting of a considerable 

 thickness of strata have been described in the North-west 

 Highlands of Scotland' and elsewhere in the British Isles. It 

 is important therefore to draw attention to cases of extreme 

 ' Geikie (93), p. 706. 



