170 WYNNE; TRANS-INDUS SALT REGION, KOHAT DISTRICT. * 



a conspicuous hill,, much of which is made of salt having a low dip to the 

 northward of east, and showing oblique lamination in such a way as to 

 indicate that the deposition took place from the northward. The hill 

 shows a section of nearly 200 feet in the salt, to which must be added 

 the unknown quantity shown by the occurrence of the craters to have 

 suffered subterranean erosion. This hill is capped by gypsum, with a 

 „ . . 15 -foot band of green clay towards the top. The 



Gypsum passing into J r 



red zone. gypsumpasses by thin alternations into the succeed- 



ing red clay zone, and resting upon this without a vestige of the nummu- 

 N liti limestone ^ c ^ mes ^ one or ^ ne lavender-clay intervening, is 

 absent, a strong escarpment of the lower purplish tertiary 



sandstones, the stratification of which at the junction appears somewhat 

 irregular, but not sufficiently so to warrant any assumption of unconfor- 

 mity, although the basal beds sometimes contain the usual limestone lumps. 

 These sandstones conform to the narrow anticlinal easterly ending of 

 of the Sirralkhwa gypsum, their inclinations approaching the vertical 

 near the apex of the curve. Some grayish sand- 



Tertiary sandstones. 



stones forming the upper beds of the escarpment 



abound in fossil, apparently exogenous, timber, a gnarled, knotted, and 



once branching trunk which lay prostrate, weathering from the rock, 



being found to have a length of 20 feet, while slightly separated portions 



of it were traced for 40 feet further. 



The ground north of Tubbaikhwa formed of sandstones and clays 

 immediately succeeding these, is extremely bare 



North of Tubbaikhwa. J * J 



and rocky where traversed by the pass of Kohneega 

 (Kohniga) to Nurree (Nurri) , a large space being occupied by a group of 

 bright red clays which, with the associated sandstones, are intensely con- 

 torted and crushed in the region of the Baruk fault. 



These sandstones and clays form a continuation of the series of the 



Continuation of central great central synclinal of the range to the west- 



sync ma ' ward, no longer recognisable here, for the beds 



over the axis of the narrow Sirraikhwa anticlinal and along its northern 



( 274 ) 



