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



well as some obscure fucoid markings and plant impressions — the only 

 traces of organic life the beds seem to possess. 



If these sandstones have any one peculiarity more likely to aid in 



disting-uishing them than another, it is the occur- 

 Peculiarity. 



rence of numerous small wart-like concretionary 



knobs projecting from their weathered surfaces (a feature sometimes 



common also in the Barakar and in some Mahadeva sandstones of 



Central India as well as among the upper beds of the Jurassic series in 



Kach). Mr. Theobald says they are chiefly composed of the sharp sand 



of granitic rocks, and sometimes have a porphyritic aspect owing to 



crystals of felspar being present."^ Some of the coarser beds have an 



arkose look_, but I can hardly argee with him that any general or special 



character of these rocks which I have seen is sufficient to "afford 



imquestionable indications of the simultaneous existence of volcanic 



forces in the vicinity." 



From the Makrach to the Sardi glen the lower part of the group, 



for a thickness of one hundred or one hundred and fifty feet, is often 



seen to consist of brownish and light-coloured 

 Conglomeratic beds. i'j-i/i iii 



sandstones with some whitish nags and dark 



shales, as well as bands of conglomerate, the pebbles in which are of 

 granite, syenite, and other crystalline, trappean, or metamorphic rocks, 

 this portion having a general resemblance to some of the beds of group 

 No. 10. 



On reference to the diagram on Plate VIII it will be seen that another 

 Irregularity of succes- group ends just about where that under notice 

 sion. commences, and the idea may suggest itself whe- 



ther the two are or are not continuous. The sections in this neighbour- 

 hood, however, show here and there a red band above the sandstones of 

 No. 5, which may possibly be the last remnant of group No. 8. The 

 latter before reaching this place gradually diminishes in thickness for a 



* Mr. Theobald's paper to As. Soc. Beng., pp. 661, 662. 

 9?w ) 



