KHIRTHAR RANGE. 75 



elevation, the western of which lies outside the British territory ; the 

 Sain, or Sayin, stream (Sainwali Nai of map) runs between the two 

 ridges. The eastern ridge terminates in the plain a little north of 

 Kitchi, and consists, near its northern extremity, of a perfectly simple 

 anticlinal roll of nummulitic (Khirthar) limestone, on the surface of 

 which rest patches of the brown limestone belonging to the lower part 

 of the Nari (upper eocene or oligocene) group. 1 These patches are for 

 the most part much too small to be marked on the published map, and 

 they have not been surveyed in detail. 



About 6 miles south of its termination, the range is traversed by 



Hot spring of Lakha a sma11 valley, in which is a hot spring known 

 Pir, near Kitchi. as Lakha Pir, with a temperature of 112.° The 



water issues in the bed of the stream, and is strongly impregnated with 

 sulphuretted hydrogen, like the spring of the same name at Laki, near 

 Sehwan. At the spring no fault can be traced in the rocks, which are 

 of Khirthar limestone, and dip at from £0° to 40° eastward, but the 

 spot is nearly on the line of a great dislocation, which is well seen a 

 little further south, and extends for 40 miles in a southerly direction. 



Khirthar limestone Close to the spring the rocks consist of unfossili- 

 near sprmg. ferous pale-coloured limestone in very thin strata, 



quite unlike the usual Khirthar beds, but a little further west these rocks 

 rest upon massive Alveolina limestone of the usual character. The beds 

 dipping to the eastward, above those seen at the spring, are also of the 

 usual type. Altogether about 8,000 feet of Khirthar beds must be 

 exposed here, perhaps more. 



At the entrance of the valley, through which the water of the spring 



Reversed dips in Nari runs ou t to the pl am on the east, about 4 miles 



and Gaj beds. north- west of Kitchi, the beds are turned sharply 



over, and the rocks of the Nari group come in with a reversed dip, 

 which can be traced for some miles to the southward, on the eastern flank 



1 By a mistake which was not noticed in time to he corrected, these patches, and also a 

 small fringe of Nari beds at the extreme northern end of the range, have been coloured as 

 (Jaj on the map herewith issued. The same mistake has been made in the case of two Nari 

 outliers on the higher portion of the Khirthar range further south. 



( 75 ) 



