6g WYNNE : GEOLOGY OE THE SALT RANGE IN THE PUNJAB. 



These siBuosities coinciding with escarpments would also sng-gest 

 undulations in the strata, being arrested by fissures along lines of 

 weakness. 



The two prominent results of disturbance, flexure and fracture, va- 

 ried according to the intensity of their cause, 

 are commonly observable throughout this region, 

 but complicated flexure is less frequent to the east, having been appa= 

 rently relieved by numerous great fractures. In the vicinity of Mount 

 Tilla, of the Chambal, Diljaba, and Bakrala ridges, boldly curved beds 

 are often brought into association with nearly vertical strata by means 

 of faults. 



Indications of anticlinal structure occur in the Bakrala ridge 



and at the Rotas end of the Tilla range, on 

 Eastera parts of the range. • i p ^, i , , • 11 



the eastern side 01 Lhambal mountain and close 



to Jalalpur, while similar open curves define the eastward commence- 

 ment both of the Kahun and Eastern plateaux. Between Diljaba 

 and the last named is a decided synclinal in the upper rocks, and the 

 wide valley between Tilla and Bakrala ridges may be called a double 

 synclinal hollow. Besides these larger flexures, small contortions are 

 of frequent occurrence, but few other parts of the range exhibit marked 

 synchnal or anticlinal curvature as essential forms of the mountain 

 structure. And yet the whole chain, from the 



Slight disturbance on the Eastern plateau westward, partakes broadly of 

 Eastern Plateau. ^ ^ •' 



the uniclinal or incomplete anticlinal charac- 

 ter, the northern side of the curve only being present. It seems rea- 

 sonable to suppose that the strata once formed a complete arch, but 

 there is no proof whatever that this was the case. 



Over the whole of the plateau eastwards, the rocks, though elevated, 

 Greater contortion to the ^re but slightly disturbed, hence the tabular 

 ^^^^' forms of the ground; but to the west the rolling 



wave-like surface is intimately connected with more violent disturb- 

 ance, each wave representing an anticlinal arch. All the hill country 



( 5a ) 



