134< WYNNE : TRANS-INDUS SALT REGION, KOHAT DISTRICT. 



This is not the only fault affecting the configuration and structure 



of the ground, the northern nummulitic limestone 

 Faults. 



rim being broken through in two conspicuous 



places as shown upon the map, besides adjacent smaller faults. 



But the main features of the structure are beautifully preserved at 

 Anticlinal well seen at D0 ^h en0 ^ s 0I * the ridge where the convex, smooth, 

 en s o e ipsol . hog-backed surfaces of the nummulitic limestones 



like the ends of an inverted canoe of huge dimensions take the ground, 

 and are successively covered one over another by sheets of tertiary sand- 

 stone having the same form and a common axis of curvature. This is 

 most evident at the western extremity of the hill, the anticlinal being 

 continued for a long way by the sandstone series between two syn- 

 clinal troughs, in which the successive beds may be traced each within 

 the hollow of another. Further east other contortions supervene, but 

 towards the Indus the strata become more steady as the succession rises 

 to the newer sub-divisions of the sandstone series. 



The lower beds of the last named series rise high upon all sides of 



Tertiary lower sand- the Saya hills, except that towards the Towey river, 



where the slopes are of gypsum or gypseous debris 



overlying the salt. Between these two the nummulitic limestone forms 



all the higher crests and stronger features of the ground. 



In the very lowest of the sandstone beds close to the nummulitic 



limestones there are some highly fossiliferous layers 

 Bone beds. 



full of bone fragments, such as ribs, terminations 

 of large bones, parts of skulls, and not unfrequently reptilian teeth. 

 These beds are well seen on the pathway by which the salt is carried to 

 the depot at Malgheen (Malgin) . One slab close to the track contained, 

 when the place was first visited, a large part of the rostrum and skull 

 of a crocodile with several teeth (discovered by Dr. W. Waagen), but 

 on a subsequent occasion this was searched for in vain, having probably 

 been broken up in the interval, for many stones from these beds with the 

 ( 238 ) 



