RHIRTHAR RANGE. 85 



Mazarani Nai, the outcrop of the Gaj group begins to form a conspicuous 



ridge, cut through by every steam flowing from the main range to the 



westward, but, between the valleys, rising into conspicuous peaks, with a 



steep scarp to the westward, and with their eastern surface corresponding 



to the dip of the beds. The highest of these peaks is Amru, 2,716 



feet above the sea, Hashim, the next peak to the southward, being 



but little lower. The precipitous western scarps of these hills consist of 



Nari sandstone, whilst their eastern slopes are composed of the brown 



fossiliferous Gaj limestones and their associates. The limestones contain 



the common Gaj echinoderms, Br eynia carinata, EcJdnolampas jacquemonii, 



Clypeaster and Ccelqpletirus forhesi. 



From the summit of any of these hills, the outcrop of the Gaj beds 



can be seen extending for miles to the north and 

 Eidge of G&j beds. 



south with the greatest regularity. The general 



strike is very constant and nearly due north and south. At Amrii 



there is a slight change in the strike, and consequently some of the dips 



are high. To the northward the angle of dip is about 20° to 25° ; to the 



south it is rather lower, there being a gradual diminution in the slope of 



the beds. But at Amru the Gaj rocks are inclined at 45°, or, in places, 



even more. In the gorge of the Burri Nai between Amrii and Hashim, 



there is a fine section of Gaj and Nari beds dipping at 45° ; but in the 



next stream to the south of Hashim, a tributary of the Burri Nai 



called the Kupri, 1 and on Hashim itself, the dip becomes only 20° to 



25°, and this soon diminishes to the westward, as it does farther north 



to the west of Amru, where horizontal Nari sandstones form high hills 



between the Gaj peaks and the main range. 



On the Kupri stream, the lower Nari beds, which must be 1,500 feet 



thick, consist of greenish -grey shales and light- 

 Nari beds on Kupri Nai. 



brown sandstones in thin beds, with the usual 



brown limestones, containing Nnmmulites garansensis and iV. suilcevigata, 



towards the base. The sandstones contain pellets of clay, and numerous 



fragments of plants, but nothing which can be determined. All these beds 



1 On the one-inch and quarter-iuch maps, this branch is marked as Booreewaree. 



( 86 ) 



