GENERAL GEOLOGICAL NOTES. 



25 



no symptom of thinning out in either direction. It is not unlikely that 

 the coal a mile to the eastward (south-east of Leap) is the extension 

 of this seam ; but as it has not been traced in the intervening ground, 

 the point is open to doubt. The outcrops north-east of Tikak and west 

 of the same village, which are about half a mile apart, are also very 

 likely exposures of one bed, althotigh not demonstrably so. The seam in 

 the Namdang south of Rangring can be traced for some 300 yards 

 up stream. Including partings, it is over 100 feet thick at one end 

 of the visible outcrop, but at the other it is not sufficiently well exposed 

 to show whether it has partially thinned out or not. 



In the Dikhu valley, a comparatively thin seam near Tel Pung is 

 traceable for a measured distance of about 300 yards, without any 

 alteration in thickness sufficient to indicate a commencement of thinning 

 out in either direction. 



A — Outcrop 40 yards from 

 Dikhu Eiver. 



Ft. In, 



j — Brownish-grey shale 2 6 



i — Carbonaceous shale 7 



h— Brownish-grey shale 8 



g — Carbonaceous shale 4 g. 



f— Brown shale ... 10 f- 



' e — Carbonaceous shale 2 ^e- 



B — Outcrop 200 yards C— Outcrop 310 yards 



from A. 



from A. 



Ft. In. 



Ft. In. 



d — Brownish-grey shale 9 



h r Not seen. 



-Brown shale 



Coal 



Brown shale . 



d— 



e—Coal ... 3 4/ 



h — Brown shale, with 

 laminae of coal and 

 l^ nodules of pyrites ... 6 ^ 

 a — Brownish-grey shale, 

 seen ... ... 3 



c — Coal 



b — Coal interband- 

 ed with carbo- 

 naceous shale 

 -Dark brownish- 

 grey shale, seen 



Not seen. 



1 6 f — Brown shale 

 6 e— Coal 

 10 ( d — Brown shale 

 Coal 



Coal, with some in- 

 terbanded carbo- 

 naceous shale ... 

 b — Brown shale with 

 laminae oicoal and 

 ^ nodules of pyrites 



a — Brownish-grey 

 6 shale 



3 7 



1 6 



9 



5 



3 



1 



1 4 



2 4 



These cases, although in none of them the bed has been traced 

 for more than a portion of its entire extent, are sufficient to prove 

 beyond doubt that many of the coal seams have a considerable degree 

 D ( 293 ) 



