MARWAT AND KHASOR HILLS. 



Bilot 



Between Kiri Khasor and Bilot, and about the latter place, the later 

 denudation has removed a good deal of the carbo- 

 niferous rocks, leaving" the boulder beds more or 

 less exposed, with the general form of an open arch. The boulder beds 

 of the group are not often seen ; there seem to be more sandstones and 

 less clays than before, but the red bole-like beds of the group stain and 

 give a prominent red colour to the whole. The carboniferous rocks resting 

 on the red group showed the following succession in the lower part at 

 one place : — 



f Pale earthy and lumpy limestones underlying a"") 

 thick shale zone 

 Hard splintery limestones . 



L.OWEE PART OE i „ 



Cabbonieeeous^ Hard y ellow sandstone, 80 feet 



}» 150 feet. 



Flaggy limestone with sandy bed 

 Dark Bryozoa limestone 

 ^Shalybeds J 



As a rule, there seems to be present in this region about 100 to 130 

 feet of pale, micaceous, sandy, carboniferous beds with some limestone 

 layers closely succeeding the red boulder group. 



Higher up are beds of purplish, pink, and light-coloured, compact, 

 coral-limestone, with large cylindrical Corals, Crinoids, and ill-defined 

 impacted shells. In the next layers above are Fusulina and the un- 

 named form mentioned at page 30, 



At the summit of the ridge here the uppermost carboniferous beds 

 seen were crinoidal and coral-limestone, with yellow crystalline and 

 white, sandy, thinly-bedded layers, containing two or three species of 

 Products, as well as many individuals of a Belleropkon common in the 

 Salt Range, a large nodose Goniatite and other shells, as well as parts of 

 large fish-bones or bony spines. Ceratites also occasionally occur in these 

 beds, so that there seems to be the same mingling of triassic and car- 

 boniferous genera at the junction here as occurs in the Salt Range. The 

 thin-bedded limestones and olive marly clays of the Ceratite group with 

 apparently less than their usual thickness immediately succeed the fossi- 

 liferous layers just mentioned, and are in contact with the soft gray 



( 277 ) 



