HILLY RANGES AND THEIR NEIGHBOURHOOD FROM BAHa'dUR KH£L, &C. 147 



a false appearance due to concealed faults or to curves the connexion of 

 which is no longer visible. 



But these cappings of gypsum need not necessarily be now in their 

 original places, we have the same rock to the south in utterly abnor- 

 mal positions, and there is no good reason why these two patches should 

 not also have transgressively subsided from higher levels owing to 

 dissolving of under-lying salt ; the situations in which they rested having 

 decided the formation of the hills, to the soluble strata of which they 

 formed a protection against the atmospheric erosion. 



One of the hills considered by itself presents much the appearance 

 Curvature in beddino- of half of an anticlinal curve, and where inversion 

 sa t# is so common (the rule rather than the exception) 



there would be little difficulty in supposing the salt beds to the south- 

 ward all inverted, if any clue could be found to the fact beyond the 

 reversed dips of some portions of the series just at the line of fault 

 (already mentioned) where local complication lessens their value. 



By introducing faulting to the north of the hills, the appearances 

 might also be explained with great probability, but of this no evidence 

 has been detected. 



The similarity of the salt-rock throughout gives it as a mass a 

 unity of character, rendering contortion repeating 



Similarity of salt-rock 



throughout against fault- the same beds more probable than dislocation ; a 



ing. 



sameness of aspect, too, all but fatal to the hope 

 of discovering repetitions among the layers, more particularly as these 

 are in places strongly obliquely laminated (or false bedded) inducing 

 distrust of discordant appearances. 



However the case may be, the fact remains that a cutting 1,500 feet 



in length could be made as the shortest straight 

 Possible reduction of m m m 



thickness incapable of line from side to side through highly inclined rock- 

 salt and nothing else, except the small quantity 



( 251 ) 



