BaUAKAR GROUP : OUTLIERS, 81 



the ironstones, would be of considerable importance, it would be advisable 

 to sink a couple of trial pits in order to thoroughly test the seams. 

 Higher in the sequence than the beds forming this dome, there are carbona- 

 ceous shales with ironstones ; these are well exposed 

 huria°'^^ one a u - -^ ^^^ ^^^^ ^^ ^^^ ^..^^^ bank, where, in a thickness 

 of about 30 feet, 10 per cent, consists of layers of 

 ironstone, which are never more than 6 inches thick. The individual 

 layers have not a wide extension, being of lenticular shape ; but as they 

 die out and reappear by rapid interpolations, the total thickness at any 



particular spot is pretty constant. A specimen of 

 Black-band. iiii i p i-i i-i -ttio 



black-band ore irom this locality yielded 33*7 per 



cent, of metallic iron. From this northwards up to Koriadih the section 



is much interrupted, occasional outcrops of sandstone only being seen. 



To the west of this line of section there is at Ghotam a low range 



about a mile long, which, like the one at Sirka, is 

 Ironstone at Ghotam. ■, . n r -i n • 



• chieny formed ot ironstone. A specimen of 



Ghotam ore yielded 39*4 per cent, of iron j but the 

 mah5°'*°''^ ^* ^'^- richest ore was obtained from some borings half a 



mile west of Kurmahie, the yield of iron being 56*6. 

 Various other sections of these rocks were examined on the edge of the 

 scarp near Ghotam and Dudhuria, which it is useless to describe in detail 

 here ; but it should be mentioned that there are caps of sandstones and 

 conglomerates on the semi-detached hills near Balu-naggar. 



There is so much irregularity of stratification, that it is difficult to assign 

 a definite thickness to this deposit, but where greatest it maybe 300 feet. 

 The general ascending sequence appears to be — 



Angular conglomerate. 

 WMte and grey clays. 

 General sequence. Carbonaceous shales. 



Ironstones. 

 Sandstones. 



These sandstones I believe to be of Barakar age, and the ironstoneSj 

 like those of Rajbar, must therefore be referred to the same group. No 

 P ( SI ) 



