No. 5. 



188 WYNNE : GEOLOGY OP THE SALT RANGE IN THE PUNJAB. 



is one corresponding with the bedding of the rock, as in the case of out- 

 lying patches of the nummulitic limestone (see fig. 30, Plate XIX). 



It cannot, of course, be assumed that the lines of slip are as regular or 

 straight as those in the diagrammatic sections figured ; the irregulari- 

 ties being concealed, these are only approximate indications. 



The general section between the Nilawan and Sardi ravines is 

 thus : — 



Groups. Feet. 



No. 11. Nummulitic limestone, compact above, marly and nodular below ,. 450 

 (Talus concealing the lower part of it). 



Lavender and variegated clays ... 160 

 I Eeddisb and white coarse thick -bedded sandstones, sometimes conglo- 

 meratic, generally speckled and ripple-marked, alternating with red 



clay or shale bands . . . 350 

 No. 4. Light-coloured and compact sandstones, frequently separated by bands 



of dark shale ... 150 



No. 3. Black shaly and flaggy band (silurian) ... 90 



No. 2. Purple sandstones, earthy below ... 300 



No. 1. Red, salt-marl, and gypsum • ... ? 



At a short distance to the eastward of the mouth of the Nilawan 



, , ravine, the group No. 4 retains only the light 



Magnesian sandstone , . 



group. colour which this hand generally possesses, the 



dolomitic character is all but gone, and sandstones, frequently alternating 

 with shaly bands, compose the group, which appears to be losing thick- 

 ness rapidly towards the west, shales frequently replacing the sandstone 

 portions. 



The Silurian dark shaly group below has still much of its usual 



appearance, and occupies its usual position above 

 Silurian. ^, , , , ' 



the purple sandstone. 



The grand gorge of the Nilawan (see sections on Plate XX) pene- 

 trates this plateau in a northerly direction for a 



Nilawan ravine. „ ,i n i i ir -i i 



distance oi more than five and a halt miles, reach-. 



ing up to Bhalial near Niirpur. Its depth is estimated at from twelve 



( 188 ) 



