NUMMULITIC. 105 



and depressions of the eastern plateau near Salowij Kiisak, Choya- 

 Saidan-Shah, Pid, above Khewra, and around the Dandot table-land. 

 From this westwards by Makrach, Malot^ and Sardi it becomes thin, but 

 is still represented in the Nilawan ravine and by a narrow band as far 

 as Nursingphoar, beyond which it has not been observed. 



"Where strongly developed, the thickness of the group is fully three 

 hundred and fifty feet, declining to a hundred and fifty feet or less in 

 other places. 



NUMMULITIC. 



No. 11, — The Numnmlitic group is one of the most largely deve- 

 loped and structurally important of the whole 

 Large development. . • ^ n 3 e n , 



series, it is mainly lormed 01 fine compact grey 



or white limestone, frequently cherty and sometimes variegated, pink 

 and grey, having rarely a curiously waved or concentric banded appear- 

 ance marked by lines of lavender, yellow, grey, and reddish tints. 



The highest beds present no great difference of colour or texture 

 from those much below them, but the lowest part 

 of the group is generally formed of rudely con- 

 cretionary, pale yellowish marly beds of great thickness, with some bands 

 of light-coloured friable sandstone, grey shale and hsematitic layers. The 

 massive and homogeneous character of this limestone as a group has been 

 doubtless the cause of some of the most striking physical features of 

 the range, of many of its finest cliffs, and of all its plateaux. 



Immediately below the light-coloured marly limestones there is a 



band of dark gypseous shales, very commonly 

 Coal shales. 



but not constantly developed ; in these occurs the 



Salt Range coal, in strings and beds of very variable thickness and 



inconstant character. Both shales and coal are very frequently pyrit- 



ous, and in consequence of the destructible nature of this part of the series, 



as compared with the overlying limestone, the latter, being deprived 



of support along the outcrop, has parted vertically and fallen away, 



leaving sheer precipices behind. The coal-shales to the west as exposed 



o ( 105 ) 



