50 W. BLANFORD, WESTERN INDIA. [PaKT I. 



the limestone near Bagh is marine, while the calcareous shales to the 

 west may be estuarine. 



The Bagh beds are, of course, utterly rmconformable to the ancient 

 formations upon which they rest. Their relations 



Relations to underly- i i • 



ing beds and to the over- to the ovcrlymg traps are somewhat peculiar. 

 Throughout large areas they have the appearance 

 of perfect conformity, and even where the cretaceous beds are very thin, 

 not exceeding 30 to 40 feet in thickness, they often appear for miles 

 without a break at the base of the traps» But in general there are 

 breaks every here and there, and in other cases only patches of the 

 cretaceous beds are met with intervening, the traps generally resting 

 directly upon the gneissose or other older series. This latter case which 

 may be seen at Tanda north of Bagh is very possibly due to the 

 accumulation of the Bagh beds in hollows ; it is far from impossible that 

 they never existed as a continuous bed to the northward. But numer- 

 ous instances are met with, and will be found mentioned in the subse- 

 quent pages, in which the cretaceous rocks had unmistakeably undergone 

 denudation before the deposition of the traps. Sections of this kind 

 "are met with (Fig. 1), and in such the abruptness of the denudation is \evy 



Fig. 1. 



a, Trap : h, Bagh-beds : c, Metamorpliic rocks. 

 marked. It is precisely that which would be caused by a stream. Its 

 excessive irregularity indeed is typical of subaerial denudation, and the 

 circumstance of no general removal of the cretaceous beds having taken 

 place seems to show that the rocks of Bagh, although of marine origin, 

 had not undergone marine denudation before the traps covered them. 

 ( 212 ) 



