KAHtJN PLATEAU. 171 



embraced by tbe tertiary saiidstoues outside of and witbiii tbe Choya- 

 Saidaii-Sbah valley, west of the fault which brings these against the 

 older beds underneath Karangli hill and. else where. 



A synclinal, corresponding with this anticlinal curve, its axis dipping 

 also to the eastward, terminates the valley portion of these tertiary 

 sandstones, close to the bungalow of Choya-Saidan-Shah, where the 

 limestones rise out from beneath them. The termination of the sand- 

 stones is concealed by a great quantity of calcareous tufa, on a high 

 cliff of which the district bungalow is built. 



Towards the western end of the Kahun plateau the lower beds of 



the tertiary sandstones rise upon the limestones. 



Western part. _ ^ ' 



become horizontal, and bend over, — dipping gently 

 to the south, forming strongly scarped hills, with heights over 3,000 

 feet. A brine-spring is reported to exist among these hills, but my 

 guide could not point it out. 



To the west of Dilwal (the largest village upon the plateau) , and very 

 much in the strike of the Choya tertiary sandstone synclinal, are two 

 isolated patches of these beds, let down by faults into depressions of 

 the escarpment above the western arm of the Makrach valley. 



The southern escarpment of this (Kahiin) plateau extends from Choya- 



„ ,, Saidan to Kharder, projecting so as to form a very 



Soutnern escarpment. x o o j 



open angle between the two branches of the 

 Makrach defile, south of Dilwal. At the head of the Gamthdla glen, 

 near Choya, it presents a fine clifF-section of the series, from the " purple 

 sandstone" up to the "nummulitic limestone,''^ including the *^ salt-crystal 

 zone" (see section, fig. 20, PI. XVI). The cliffs continue, but the 

 section changes ; and within a mile and a half of the mouth of this 

 glen the salt-marl appears, so that the following succession is seen — 



Feet. 

 Group No. 11. Nummulitic limestone, lumpy below, more than .. 200 



(Talus, place of coal shales, &c,) 

 „ No. 10. White, red and purple sandstones and olive metamorphic- 



pebble conglomerates, estimated ,., ... 150 



( in ) 



