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



Here the isolated mass of the nummulitic limestone^ before men- 

 tioned, occurs on the right bank of the stream for about 100 yards. At 

 the north-western end it is in contact with some of the greenish 

 triassic shales, the limestone being overlaid (instead of underlaid as 

 might have been expected) by a 4-feet bed of white sandstone, succeeded 

 by a conglomerate of possibly recomposed nummulitic limestone pebbles. 

 Eesting upon this are a few beds of tertiary sandstone of two kinds, 

 purple, and grey pseudo-conglomeratic, coarse, soft, or speckled sand- 

 stone. The coal-shales beneath the nummulitic limestone are greatly 

 crushed, the coal being very bad, rather a highly carbonaceous shale 

 with a few plant fragments, and the most coaly portion varying from 

 3 inches to a foot in thickness. Beneath these shales Dr. Oldham 

 seems to have observed some of the salt-marl, which may probably 

 have been subsequently concealed by the stream deposits. It occurs, 

 however, a little way north-east of the nummulitic limestone, away 

 from the stream. A few yards further up the course of this, some more 

 beds of the tertiary sandstones come in over the limestone, the section 

 being as follows, and the beds dipping east-north-east at 30° : — 



f5. Eed clay. • Feet. 



14. Grey soft sandstone ... ... ... 30 



^sakdS)NE. 1 3. Brown sandstone ... ... ... 10 



.„. (1. Liraest 

 Nummulitic (?) s 



V. (An on 



i2. Grey sandstone... ... ... ... 35 



Limestone conglomerate ... ... ... 21 



(An original rock or recomposed from debris ?)* 



From the brown sandstone. No. 3, a small quantity of mineral tar was 



oozing out and running down the bank for 15 

 Mineral tar. ^ mi i ■ ' i i • 



feet. The rock is very tough and strongly im- 

 pregnated with the petroleum or tar, which burns with a red flame, 

 sputtering much, doubtless in consequence of the presence of water. 

 Beyond this the carboniferous limestone forms both sides of the valley, 

 but to the north-east of the coal and tar locality, within a mile, denu- 

 dation and dislocation have exposed some of the " speckled sandstone '■ 



* This conglomerate may perhaps represent the similarly placed detrital junction- 

 rock at the top of the nummulitic limestone of the East Salt Range, on the hills south of 

 Phadial. See p. 108. 



( 236 ) 



