140 WYNNi : GEOLOGY OF THE SALT RANGE IN THE PUNJAB. 



on account of undulation^ a thickness is found which cannot fall far 

 short of 500 feet. The other groups have their usual dimensions ; the 

 magnesian sandstone from 150 to 200 feet, the silurian shales 

 150 to 180 feet, and the purple sandstone from 400 to 500; its' lower 

 70 feet being flaggy and shaly and passing downwards into purple 

 marl. 



The tertiary sandstones, &c., dip at high angles, and must be very 



thick, the quantity, however, shown in Fig. 15 

 Tertiary sandstones, &c. . . „ , . 



appearmg greater m consequence oi the section 



crossing the line of dip obliquely. The steep dips are confined to the 



northern slope of the ridge ; having gained the summits of which, the 



beds bend over and become horizontal, their outcrop and that of the 



nummulitic limestone terminating in a scarp only 150 or 200 feet deep. 



Where the ground falls rapidly, these rocks are cut into by numerous 



deep ravines. 



The main escarpment about Bhaganwala is a good deal broken, massive 



portions of the cliffs having fallen entirely or par- 



scarpmen . tially slipped from above. (See fig. 17, PI. XIII.) 



Westward of Bhaganwala the ridge rapidly increases in width as 

 it joins the Eastern Plateau of the range. The 



Westward of Bhagan- , , .,i - • tit i ^ i j 



wdla. escarpment still continues bold and marked to- 



wards Jutana; the purple sandstones and dark shaly silurian zone 

 being everywhere capped by the magnesian sandstone which forms the 



cliffs along this feature. The ground above un- 

 Series. . , . i • i 



dulates greatly, much of it being covered with 



the bright red salt-pseudomorph group, and some higher hills are 

 formed of the nummulitic limestone, here more than a hundred feet 

 in thickness, while to the northwards the highest part of this undulat- 

 ing country exposes the lower tertiary sandstones, &c., in the neigh- 

 bourhood of Ara. To the east of that village, 

 Tertiary sandstones, &c. i i • i 



nearly horizontal tertiary sandstones form a 

 ( 140 ) 



