34 WYNNE : GEOLOGY OF THE SALT RANGE IN THE PUNJAB. 



at least as far down as the nnmmulitic limestone, would have been 

 classed as Nahan. 



In his recent paper upon the Jama country* Mr. Medlicott 



describes at some leno-th the chano^ing structural 

 H. B. Medlicott, 1876. . . . . 



features of the intermediate tertiary region, be- 

 tween his Sub-Himalayan district and that occupied by these rocks in 

 the Upper Punjab. 



The paper has an important connection with the geology of the upper 

 scries of the Salt Range, and requires to be carefully considered, because 

 it diflfers greatly from any previous attempts to apply the eastern 

 structural arrangement to the Western Punjab part of the Hima- 

 layan border zone of tertiary rocks. In both regions the differences 

 of stratigraphical structure, embracing succession or discordance, had 

 been as well known as that identical groups occurred in both. 



The principal points bearing upon the Salt Range tertiary sand- 

 stones, &c., are the following : — 



All the breaks, faulted boundaries, discordances, or marked uncon- 

 formities separating the different tertiary zones in the south-east 

 become altered and die away in their extension to the north-west, so 

 that the groups found in the Upper Punjab succeed each other with 

 perfect parallelism at the Salt Range as well as elsewhere in this 

 country. This regularity of sequence I had often noticed and referred 

 to — see papers on the Upper Punjab.f 



Even the unconformity of the Sub-Himalayan eocene Sabathu 

 group on the older Himalayan series likewise dies out, and the Sabathu 

 beds in this northern region rest with as perfect parallelism upon older 

 limestones of unknown age in Punch, as I had observed them to do upon 



* Eecords, Geol. Survey, Ind., Vol. IX, p. 49. 



t Records, Geol. Survey, Ind., Vol. VI, pp. 60, 63, Vol. VIII, p. 48, and Quarterly 

 Jourl. Geol. Soc, Lond., Vol. XXX, p. 61, 1874. 



( 34 ) 



