05S SUB-HIMALAYAN ROCKS OF N. W. INDIA. [CHAP. II. 



series, is entirely in trappean rocks. I could have wished to have devoted a much longer 

 time to the study of this most interesting region, hut my observations of it were necessarily as 

 hasty as any that I could make of these older rocks. It is to be hoped that some of the 

 many visitors to the charming sanitarium of Dalhousie will tell us more about the geology of 

 the neighbourhood. 



I have still to give a brief notice of the Lower Himalayan rocks 



lying east of the Chor. In proceeding south 

 East of Chor. . . 



from Deobun, along the ridge of Bairat or down the 



valley of the Omlao to the Jumna, the rocks are found very variously 

 disturbed, but with a prevailing north-east dip, and on the whole the 

 section seems a descending one ; there is a great variety of slates, grits and 

 sandstones, with even some limestones, but no rock that I could identify 

 from passing observation. The sections already noticed to the west of the 

 Tons lead us to conjecture that this region of the Omlao is one of 

 moderate special elevation, involving irregular dislocation and denuda- 

 tion, by which the winding courses of the two great rivers may have 

 been predetermined to their confluence below Kalsi. Still even here 

 we find evidence of a narrow, fringing zone of less upheaval, although 

 it too partook of the local transverse elevation : the Blini conglo- 

 merate-grit is largely developed along the Taru ridge over the Tons, 

 west of Kalsi. 



Along the Masuri ridge, from Budraj on the west to Surkunda on the 



east, a distance of about twenty-five miles in a 

 Masuri ridge. 



nearly east and west direction, we can, with much 



probability, identify the rocks with those of the Krol. Budraj hill is 



composed of green and purple slates, and grits with some quartzitic 



sandstone. They are traversed at all points by greenstones : the dip is very 



irregular, but is mostly north-eastwards. On the next summit, the extreme 



west end of Masuri station, clear sandy and cherty limestones have a 



high dip to the north-north-east. An anticlinal line traverses the ridge at 



a very small angle of obliquity: on the Abbey hill the same limestones 



