] 14 WYNNE : TRANS-INDUS SALT REGION, KOHAT DISTRICT. 



layers. The uppermost portion of the zone, a band of pale purple clay, 

 is also here proportionately thicker, and contains lumpy calcareous layers 

 and nodules which increase upwards in quantity till they form the first 

 bed of the nummulitic limestone. 



Fossils are not seen in the lowest 4 feet of this limestone, where 

 shales alternate with it, there being four red and yellow earthy beds 

 among these, the lowest of which is the thinnest. A hard gray lime- 

 stone band like that on the other side of the axis here occurs higher up 

 in the group, and the upper portion of the latter is rugged and very 

 lumpy nummulitic limestone with several of the usual fossils. 



The junction beds of the tertiary sandstone here are somewhat 



Southern junction of unusua1 ^ tae corrugated surface of the limestone 

 limestone and sandstone. h e i n g covere d by 4 feet of gray and variegated 



clay, with large irregularly rounded limestone concretions or nodules. 



This is succeeded by a coarse, gravelly, loose sandstone, largely composed 



of nummulitic limestone debris, 5 to 7 feet thick, and following the clay 



and limestone stratification quite regularly. It is, however, quite local, 



and does not appear on the opposite bank of the stream. Over this 



come the red clays, sandy clays, and purplish or gray sandstones as usual. 



At the lower positions in this tertiary series the whole section is one of 



considerable interest, showing, as it does, the true structural relations of 



so many of the groups in a country where most of the appearances are 



apt to mislead. 



With regard to the relations of the salt and clays and gypsum, 



which are so obscure in the centre of the section, 



Western anticlinal in- 

 dications at Bahadur much of the obscurity disappears on ascending 



from this gorge the little stream of the salt 



quarries valley, which unites with the Kurshni Algud by a rocky fall in 



the tertiary sandstones at the southern side of the above sketch. 



Having reached the axial region, the salt, of which from 10 to 15 feet 



in height is exposed, is found horizontally arranged below gypsum, also 



horizontal, and some 15 feet of greenish clay intervening between the two. 



( 248 ) 



