118 RANIGANJ COAL FIELD. [ChAP. IV. § 4. 



South. The latter is, doubtless, cut off by the former,* and as much 

 breaking and disturbance is seen in the rocks around Deoli, it is pro- 

 bable that the Chanch fault crosses the river there. No probable direc- 

 tion is shown in the map, but, as in many other cases, there is an 

 apparent diminution-in the amount of throw towards the South, which 

 may possibly be due to these faults having been partly, but not entirely, 

 formed after the deposition of the Lower Damudas, and before that of 

 the Raniganj series. They would consequently have a much greater 

 throw in the former than in the latter beds. But it is not probable that 

 the unconformity between the two series is so great as the existence 

 of much disturbance during the intervening period would imply. 

 Upon the thin ironstone shales, South of the village of Koelasota, 



rather coarser carbonaceous shales, with bands 

 Beds South of Koelasota. 



of calcareous sandstone, and, towards the base, 



runs of sandy black band, rest as usual. These beds are well exposed 

 North-west of the village of Nudia. The dip is high, owing, doubt- 

 less, to the rapid twist of the strike, and the neighborhood of great 

 faults to the West and the North-east. The lowest coal seams seen 



are in the stream between Narrainptir and Bar- 

 ScamsnearNarrainpur. .,,,., „ , , , ,, 



shadhi, where a small bed occurs about a loot 



thick, and 100 feet above that a second, apparently 6 or 8 feet thick, 



in the out-crop of which a small quarry was opened by the Bengal 



Coal Company, but the coal, being found to be of inferior quality, was 



not worked. Two hundred or two hundred and fifty feet higher, is the 



seam formerly worked by the Bengal Coal Com- 



And Nudia. . . . 



pany, at JNudia; the section 01 which is thus 



detailed by Mr. Williamsf :— 



Ft. in. 



Brown gray sandstone ... ... ... ••• ... 21 



* The continuation of the Barakar faults is probably that forming the West boundary of 

 the field from the Damuda to Panchet Hills, 

 j- Report, page 60. 



