Marl and Gypsum. 



Salt, 





Feet. 





-25 



10 



... 





100 



25 



... 





50 



100 







50 



140 





160 WYNNE : GEOLOGY OF THE SALT EANGE IN THE PUNJAB. 



The latter is grouped as follows : — > 



10. Salt bed (Rehan's seam) 



9. Salt marl 



8. Salt bed (Big Buggy seam) 



7. Salt marl 



6. Salt bed (Soojeewal seam) 



5. Salt marl 



4. Salt bed (Phurwalla seam) 



3. Salt marl 



2. Salt bed (Billiwala seam ?) 



1. Salt marl 



Total ... 275 275 



The colour of the salt is red and white ; red earthy^ or merely coloured, 

 layers being very numerous in some of the beds^ generally from tea 

 inches to a foot apart^ and about one inch thick. As a rule, these layers 

 of deposition are parallel. The salt beds and alternating marls appear 

 to be nearly flat in the southern part of the glen, and towards that side 

 of the salt mines' hill ; but within this hill they curve rapidly downwards, 

 dipping at 60° and 70° towards the west of north, an undulation of the 

 strata bringing them again at a low^er angle beneath the cliffs at the 

 head of the glen (see section fig. 24, PI. XVII). The main mass of 

 the gypsum overlies the salt, and is succeeded by the purple sandstone 

 and other groups in their proper order. 



These can only, however, be considered the general relations of the 



salt-bearing part of the marl ; and it is probable 

 Relations of the series. 



that there are still other salt beds on different 



horizons, one of these occurring in a side ravine, on the left of the 



Khewra glen at the junction of the gypseous portion of the marl with 



the purple sandstone. 



* Dr. Warth has some doubt about this last seam ( No. 2 ). The section is known down 

 to the bed No. 3, and the last is assumed as probably another bed. 

 ( 160 ) 



