Chap. II.] the Himalayan series. 47 



convergence of dip that forms so peculiar a feature of the region round 



the Chor, seems to me strongly in favour of a faulted elevation and 



semi-intrusion, such as I have attempted to represent in Fig. 6. 



Fig. 6. 

 S. W. N. E. 



^ _- — c^akjM Art vA\aa j \vV£K-^ 



Conjectural section of the Choi- Mountain. 



The probability of this mode of explanation is greatly strengthened 

 by the analogy of other sections. On the Dhaoladhar there is a section 

 very similar to that of the Chor ; there, however, we have a very long 

 and straight range, in which case there seems nothing forced in sup- 

 posing it to be the result of a great, faulted, anticlinal flexure ; whereas, 

 whether going north-west or south-east from the summit of the Chor, 

 we should be obliged to suppose a section similar to that I have shown 

 on the south-west, and at about the same distance from the summit, — a 

 kind of button-like intrusion, of which it is difficult to conceive the possi- 

 bility without Considerable plasticity in the mass, or indeed even granting 

 such plasticity. To this however we find also an analogy in the Dhaola- 

 dhar : at the abrupt termination of this great ridge of granitoid rock, over 

 the bend of the Ravee, we find the flanking schist rocks to curve round, and 

 to dip under the end of the ridge as steadily as they had done alono- 

 its southern base. If then viewed as due to the elevation and semi-in- 

 trusion of a normally underlying mass, the upheaval or tilting in the Chor 

 must be at least 10,000 feet greater than anything that occurs along the 

 Giri fault. 



The Simla synclinal axis, if continued, would pass on the south of the 



Chor. In the north-west direction it points to, 

 Simla synclinal. 



and reaches the farthest limit of the partial area 



of elevation. In the amphitheatre of hills west of Sukrar we first find 



