20 



mallet: geology of darjiling and western duars 



[. 







Ft. 



In. 



Sandstone (dipping N. 20° W. at 70°) 



... 



7 







Shale and shaly sandstone 



... 



21 







Coal 



... 







6 



Shale and shaly sandstone 



... 



7 







Coal (dipping S. 15° W. at 70°) 



... 



1 







Sandstone 









10 



Brown shale 



... 







3 



Sandstone 





3 







Dark-grey and brown shale 





8 







Shaly sandstone ... ... ... 



... 



6 







Sandstone (dipping K 15° E. at 80°) 



... 



30 







Alternations of sandstone and dark-grey shale 



... 



6 







Sandstone 





5 







Brown shale 



... 



4 







Coal ... ... ... 









4 



Shale; some parts carbonaceous ... 



... 



6 







Blank ... 



... 



8 







Hard greenish-grey massive sandstone ; but little 



bedding 







(dipping N. at 50°) 



... 



27 







Dark-grey shale 





6 







Shaly sandstone 



... 



2 



6 



Dark-grey shale 



... 



4 







Sandstone ... ... 



... 







10 



Coal 



... 







4 



Sandstone 



... 



2 







Blank ... 



... 



6 







Sandstone ; some parts shaly 



... 



14 







Coal 



... 







10 



Shale 



• . . 







6 



Blank ... 



... 



300 







Then there is perhaps 100 feet of grey slate, and, after a short 

 blank, some hundred feet of similar slate, greatly cut up by jointing. 

 These beds, which I believe form the base of the Daling rocks, rest on 

 greatly crushed sandstone, with a few crumpled coaly layers. The junc- 

 tion is well marked, but without sensible unconformity. 



In the Chochi naddi and in the western branch of the Chirangkhola, 

 n , . . , . ... sections are obtainable. The beds exposed in the 



Chirangkhola naddi. r 



latter are mostly dark-grey micaceous shales, with 



rather thin-bedded sandstones and some carbonaceous layers. 

 ( 20 ) 



