116 SUB-HIMALAYAN ROCKS OF N. W. INDIA. [CHAP. IV. 



miles distant from the crest ; yet on that ridge we find not a trace of such 

 a transverse break. It is fortunate this example exists, for one might be 

 tempted in the greater case, just east of the Ganges, to take as evidence 

 of this kind the distinct termination of the Masuri range about this 

 meridian. A more immediate argument against this notion of cross-faults 

 is the general fact that in every case of these bends the strike in both 

 rocks approximates more or less exactly to the direction of the boundary. 

 This fact, if not quite unaccountable on the supposition of cross-faulting, 

 certainly lends it no support. The entire result is however in keeping with 

 the view I have been advocating : namely, that it is a natural boundary. 

 The position of strata exercises a great influence upon their mode of 

 yielding to all kinds of denuding forces. We have seen in the section 

 of the Hewnulgur that the Infra-Blini rocks of this region exhibit great 

 irregularities of disturbance ; hence, then, the irregularity of this boundary, 

 which I regard to be, quam proxime, an original one ; hence also the 

 coincidence of the strike of the inner rocks with the direction of the 

 boundary. The coincidence of strike of the Nahun beds would equally 

 follow from the mode in which I would account for their contortion by a 

 slow compressing force, throwing off masses of unequal elasticity at r|ght 

 angles to their original surface of contact. 



The step in the boundary at the Ganges is coincident with an important 

 change in the relations of the younger rocks. The Nahun rocks are far 

 more prominently displayed to the east of this line than to the west, 

 and the Sivaliks undergo a kind of reciprocal extinction. At Riki 

 Kase the sandstone beds are vertical, with a northerly strike. In a 

 line nearly due south of this, at the opening of the Mitiwali sote (torrent) 

 the same rocks are in contact with the Sivalik conglomerates, and both 

 are vertical, with a strike tp north-by-east ; up the sote, however, after-a 

 space of uncertainty, the dip becomes steady to north-east, the strike 

 thus conforming to the new direction of the boundary. 



