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



as to be entirely included in the marl, giving with the doubtful interstra- 

 Alternation at upper tification mentioned the appearance of at least three 

 part of salt-marl. alternations of "red marl" with the lower beds 



of the " purple sandstone."* Besides this, masses of the " speckled sand- 

 stone " group have subsided between portions of the latter rocks, which 

 appear much thinner than usual, and both at the mines and towards the 

 head of the gorge, complicated landslips cause the carboniferous lime- 

 stone to rest on the " salt-marl," with only the intervention of the upper 

 lavender clays of the "^ speckled sandstone" group. At one place on the 

 right side of the gorge, northwards from the mines, there are some 



greenish sandy beds intercalated between the 

 Greenish sandy beds. , ,, , „ i i i ■» -, , • ,, , 



" purple and " speckled ' sandstones m the place 

 of group No. 3, which as a continuous band disappears far to the east- 

 ward about Khund Ghat on the road to Sakesar from Shahpur. 



Above the speckled sandstone and its lavender clays, the carboni- 

 ferous limestone appears everywhere on the 

 heights surrounding the glen. Near its mouth, 

 faulted or slipped and disintegrating masses of the same rock in imme- 

 diate junction with the salt-marl form the low outer hills. 



The thickness of the purple sandstone may be partly concealed by 

 slips here, but at the head of the glen it seems to have diminished to 

 150 or 200 feet. The speckled sandstone group is also apparently 

 thinner, the sandstones being from 100 to 150 feet, and the clays above 

 from 50 to 80 feet, or for the whole group from 130 to 250 feet. The 

 thickness of the carboniferous limestone, from its manner of exposure 

 making differently sized cliffs in different places, is not very easy to 

 estimate, but the hard cliff limestone may be about 250 feet or less, 

 having some 50 feet of sandstone beds below, and 80 to 100 feet of other 

 sandy calcareous beds with Belleroplion, kc, above, making the whole 

 group 350 to 400 feet. 



* These appearances, at one place on this left side of the glen, certainly have very 

 much the aspect of natural and successive alternation, 



( 230 ) 



