1 74 WYNNE : TRANS-INDUS SALT REGION, KOHAT DISTRICT. 



The eastern side of this trough is a simple synclinal, but to the 

 west at the narrowest part of the whole range the curve is overthrown 

 to the south. The t section. Fig. 4$, is taken nearly midway between 

 and shews a length of about two and a half miles. 



1. Rock-salt. 2. Gypseous series. 3. Red clay zone. 4. Nummulitic limestone. 5. Tertiary sandstone. 

 5a. Beds towards upper part of same series. F. Biruk fault. 



The nummulitic limestone is absent or but slightly represented to 

 the west of this synclinal, but to the east is largely displayed from its 

 position more than from its thickness. The red clay zone is seen beneath 

 where not interrupted by faulting, the gypsum occurs below, and the 

 rock-salt is locally largely exposed to the south, in the escarpment of 

 the mountain below the summit of Kurar. 



An interesting but complicated section is exposed in the Algud 

 Section in Algud near which crosses the range running northward in a 

 deep ravine between the Kurar synclinal and the 

 Speena (Spina) gypsum tract. Descending this ravine from near Shai- 

 dan, tertiary, red, and gray sandstones and clays are passed through, 

 dipping southward at 70° or more nearly vertical. Red clays of the 

 red zone with a thickness of 150 feet underlie these, or would, if there 

 was any underlie to speak of. Gypsum, nearly vertical or dipping at a 

 very high angle to the south, 155 feet thick, and with greenish clays 

 on both sides, is then passed. In the lower part of this gypsum the 

 southerly dip lessens to 60°, and the beds are contorted. A few yards 

 further on apparently the same mass of gypsum, curved and undulated, 

 seems to increase enormously in thickness up to 300 or 400 feet, 30 feet 

 of its lowest part being dark or black and bituminous calcareous shales 

 Dark gypsum and ( s ™ analysis No. 2, page 48). At this place sul- 

 sulphurous springs. phurous springs break out at the sides of and in the 



Algud, the whole place smelling strongly of sulphuretted hydrogen. For 

 several yards further, disturbed and partly inverted gypsum is seen, 

 and then the red clay zone is entered with a local appearance of large 

 thickness. Its red sandstone bands near the top are also largely 

 ( 278 ) 



