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



f Grey sandstone layers ... ... ... ... 6 



Black coaly, shaly beds, micaceous... ... ... 3 to 6 



Thick light grey concretionary sandstones with nests of 



CaeboNIFEEOTJS...^ iossils, small Frodueti, Bellerophon, and Gastropoda ... 6 

 Brown sandstone and limestone with BelleropAon, Produetus 



costatus, and a, Dentalium ... ... ... 200 (?) 



L Compact limestone with corals ... ... ... 300 



I found some of the Ceratites in the shaly beds on the south-west side 

 of the basin to be of large size, occasionally measuring thirteen inches 

 across. At this side of the basin there are also seen some 30 feet 

 of white sandstones above the haematite zone, succeeded by 20 to 

 30 feet of dark-coloured shales beneath the yellow marly beds of the 

 nummulitic limestone. At another place the haematite band measures 15 

 feet and is overlaid by 25 feet of white sandy beds, both being displaced -, 

 and at the south-eastern end of the basin an old pit was shown to me in 

 w^hat appeared to be a dislocated fragment of the haematite : from this 

 pit-alum shale was reported to have been raised. Alum workings are 

 not, however, now carried on here. 



The grey limestone with numerous bivalves, marked as 2 feet thick 

 in the above table, is nearly 10 feet on the opposite side of the trough, 

 and the shaly beds are covered with saline efflorescence. 



The high hill south-west of this (3,408 feet) is scarped towards 

 the basin and formed of the hard fossiliferous (carboniferous) lime- 

 stone, folded so as to add much to its apparent thickness, which would 

 be great even if undisturbed. The limestone of the carboniferous forma- 

 tion is frequently dolomitic in this neighbourhood, in the lower country 

 along the escarpment of the range. In the neigh- 

 bourhood of Choya (Chua) more than the usual 

 amount of disturbance and dislocation prevails. 



On the right side of the Dokri gorge, within a mile from its 



mouth, there are four large and many minor 



ground slips, one of which is probably along a 



continuation of the KavhM fault. Further west the entanglement of 



( *26 ) 



