10 BOKARO COAL-FIELD. 



than with that of Raneegunj. No animal remains have yet turned up, 

 although I devoted much time to the examination of rocks which I con- 

 sidered most lilcely to reward search. 



Sect. 1. The Baeakar Group. — The pebbles beds of this group 

 are well developed along the northern boundary of the field, and in some 

 places overlap the Talchirs and rest naturally upon the gneiss. Near the 

 Koonar River, they are more than 40 feet thick, and extend as far west as 

 Goomeea. A cross-fault accompanied by quartz then cuts them ofi", and 

 they do not re-appear in any force until we reach Karopanee. Again, 

 they are visible at Puchmo ; but I do not think they are continuous. 

 West of Bussutpoor they are cut out by a fault, but south of Churhee 

 we get them again. 



These conglomerates are a much more important band in this field 

 than in the Jherria one, and thicken remarkably as they extend west- 

 wards.'^ Along the southern boundary there are also instances of these 

 beds being exposed. They occur along natural and not faulted junctions. 



The character of the southern boundary is very mixed, and before 

 proceeding further with the descriptive geology of the district, I will 

 here discuss its value as well as that of the other boundaries. 



SoutJieroi loimdary. — There seems especial need to introduce the par- 

 tial influence of faulting in the case of the main junctions of the coal 

 rocks and metamorphics, as there are portions of the boundaries which 

 cannot be imderstood, if assumed to be natural. The highly inclined 

 angle at which the beds may dip is not always an indication that 

 the strata have been faulted. The southern boundary is clearly a fault 

 north of Pichree, and retains that character as far west as Angwalee. 

 Near this village the fault runs inside the main boundary of the field, 

 so that the junction between the metamorphics and coal measures is 



* In the Karunpoora Field, to the west of this Bokaro Field, there ai-e some sections 

 ■which expose 78 feet of these rocks, 



(48) 



