22 



MALLET : COAL-FIELDS OF THE NAGA HILLS. 



Brown shale ... 



Grey shale, with a few coaly laminae ... 



Grey, rather clunchy shales, with some nodules of clay iron- 

 stone, and three or four layers of hard and tough mag- 

 nesian limestone near the top 



Blank 



Brown shale 



Coal 



Brown shale 



Coal, dipping E. 20° S. at 25° 



Coal, with some interbanded carbonaceous shale ... 



Brown shale, with coaly laminae and nodules of pyrites 



Brownish-grey shale 



Blank 



Grey clunchy shale 



Rather thin-hedded sandstone, containing a few clay ironstone 

 nodules 



Blank 



Rather thin-bedded, slightly false-bedded sandstone, somewhat 

 shaly in part 



Thick-bedded sandstone, containing a few nodules of clay 

 ironstone 



Brown pyritous shale 



Rather harsh, thin-bedded sandstone, dipping E. 10° S. at 20°.. 



Thin-bedded, rather shaly sandstone ... 



Blank 



Harsh, dark-grey sandstone (one bed) with coaly laminae 



Grey shale 



Brownish shale 



Blank 



Shaly sandstone 



Rather harsh, fine-grained, thin-bedded sandstone... 



Thin-bedded sandstone interbanded with grey shale 



Grey pyritous shale, with occasional laminae of coal ; seen 



Ft. 



In< 







1 



6 



8 



38 







10 







1 



6 







9 







5 



3 







1 







1 



4 



2 



4 



3 







8 







21 







6 







64 



9 







8 







. 24 







10 







. 15 







2 



4 



4- 



6 



4 



8 



2 



6 



2 



6 



1 



6 



3 



6 



8 







377 



1 



The strata above the uppermost beds in the section are badly 

 exposed, but similar alternations probably exist for some hundreds 

 of feet higher. 



( 290 ) 



