180 WYNNE I TRANS-INDUS SALT REGION, KOHAT DISTRICT. 



among which the rough Grypkaa-Yike form alluded to as characteristic of 

 this Trans-Indus nummulitic rock is conspicuous. 



The Mittan Turtulli, or (as the natives call it) Turrilla, pass, is the 

 bed of a deeply cut ravine, the stream of which 



Mittan pass. 



is formed by the collection of several others from 



the Lukkur Ghur mountains and the south side of Kurar, the most 



important ones uniting near Bund. The stream thus formed is one of 



the numerous examples in the country of its main 

 Cross-drainage. . . . 



drainage bearing little relation to the disposition of 

 its ridges, these latter being crossed in various places by every consider- 

 able stream in the district. Following the river through the Mittan pass 



towards the Teeree Towey (Tiri Tarn), the red 

 The section. r 



clays and soft gray sandstones seen from Kurar to 



the end of the Dund ridge are found to dip at high angles to the south, 



becoming vertical just at the latter spot. The Dund limestone of the left 



bank is cut out by a fault, and behind, or immedi- 



Fanlt. J > 



ately northwards, lower, purple and gray tertiary 



sandstones, &c, are also highly inclined to the south. Crossing these for 



more than half a mile, they are again suddenly 

 Fault. 



faulted against a mass of gypsum with some traces 



of an anticlinal structure, this being the gypsum of the central ridge 

 and a continuation of the northern band of Kurar. The red clay zone 

 makes no great show here on account of its softness, but is, as usual, 

 present in inverted order overlying 250 feet of the nummulitic lime- 

 stone, the back bone of the ridge, which likewise overlies, at angles of 

 65° and 70° to the south, a long series of steeply inclined or vertical beds 



belonging to the lower tertiary sandstone series. 



Another fault still cuts these off from the gypsum 

 of the Zyarutti ridge, on the northern side of which the limestone and 

 lower tertiary sandstone lie in their proper order as shown in Fig. 53, a 

 section through the Mittan pass, about three miles. 



2. Gypsum 3. Red clay zone. 4. Nummulitic limestone. 5. Tertiary sandstone series, lower. 5a. 

 Ditto, upper. 



( 284 ) 



