4 HUGHES : DEOGHUR COAL FIELDS. 



coal-field''' from the river of that name which traverses a part of the field. 

 It covers an area of 24 square miles ; and both the Talchir and Damnda 

 series are represented, the latter by the Barakar group only. 



1. TalcJiir series. — This series covers the greater part of the field, 

 and is chiefly represented by the silt shales which are so prominently 

 developed in the Jherria District. Amongst the best sections are 

 those of the Puphi Nuddi, the Purtal, and the Busjora which 

 expose the conglomerate bed at the bottom, and the usual succession 

 of silts, shales, and sandstones. There is no special feature to allude 

 to which has not already been amply described in my previous reports 

 and contributions to the Memoirs of the Survey, and, merely alluding 

 to the local distribution of the series and the faulting of the boundaries, 

 I will pass on to the more important, though not more interesting, 

 deposits of the Damuda series. 



The conglomerate bed contains boulders equal in size to any -which 

 I have elsewhere seen, with the exception of those in the Bokaro field. 

 It is found along the non-faulted boundaries ; and evidences of it beyond 

 the outlier are met with in the loose pebbles and boulders scattered over 

 the surface of the gneiss. 



Purple shales are to be seen north of the Puphi Nuddi, and 

 south of Nugwan, dipping south-west at variable angles, .They occur 

 also near Belkiari, not far from the small inlier of gneiss. 



The boundaries of the Talchirs are variable. The main southern 

 one is natural, notwithstanding that the quartz-breccia in the gneiss 

 opposite Pichri and the Sonthal village of Tikupahari suggests the 

 probability of a fault. The lowest beds of the series are found almost 

 everywhere along the boundary, dipping at small angles towards the 

 middle of the field, and there is not the slightest evidence of a throw. 

 The most distinct faults are, the one south of Jobidih, and the one 



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