38 WYNNE : TRANS-INDUS EXTENSION OF THE PUNJAB SALT RANGE. 



by faults on the west and south-east. The gray carboniferous limestones 

 and calcareous sandstones contain crinoidal bands and, amongst other 

 fossils, large Products, Dentalium, &c. Overlying these beds in a transi- 

 tional sequence are the thinner-bedded limestones 

 Trias. 



of the triassic Ceratite group, some layers showing 



many of these forms, and its upper portion consisting of a thick (300 

 feet) mass of the usual greenish-gray Ceratite-shales with subordinate 

 fossiliferous limestone layers. 



Upon these shales come thick soft sandstones of the Jurassic forma- 

 tion, with obscure plant impressions, passing up 



JlTTflSRlC 



into a large series of red and white yellowish 

 variegated sandstones and dark sandy pyritous alum-shale with hsema- 

 tite beds or masses. These alum-shales contain the fossilized plant stems 

 which furnish the Kalabagh lignite. Among the efflorescences on the 

 dry part of the banks of the Tilla-kas and its tributaries, when they 

 traverse the alum-shales, bunches of hair-salt occur, chiefly composed 

 of magnesian sulphate. 



The variegated group is succeeded by light gray Jurassic limestones 

 Variegated group and an d dolomitic layers ; the former contain some fossils. 

 eocene ' A bed of dark earthy supra Jurassic sandstones in 



places divides these from the lower eocene alum-shale and limestone, 

 which is again overlaid by thick alum-shale and strong lumpy or nodular 

 nummulitic limestones, forming a scarped outcrop crossing the hill ob- 

 liquely. Some of the red clays and gray sandstones of the tertiary series 

 rest upon the limestone, and have much the appearance of the lowest ter- 

 tiary sandstone beds. 



Extending unconformably over the latter, as well as over the saline 



series, and faulted or slipped into contact with 



other groups, is a thick mass of limestone-pebble 



conglomerate, overlying as large a group of brown clays and gray 



coherent sands very like the " orange and gray " part of the tertiary 



sandstone. Similar brown or reddish clays are interstratified in the con- 



( 248 ) 



