j<5hilla coal-field. 



37 



light and very bituminous. The subsequent notices of the Jdhilla valley 

 are those by myself in the Records of the Survey. 



The boundaries of the Barakar group are fairly well discernible, and 

 the only indeterminate portion is near Kumurdu, 



Boundaries. , 



where alluvium and rank grass frustrate all at- 

 tempts at close delimitation. 



There is very little departure from the ordinary type of sandstones in 

 any of the river sections ; but in that of the Dhobghata I remarked 

 some yellowish felspathic silicious sandstones near Khodargaon, with 



thin vitreous ferruginous plates and containing 



Ferruginous sandstone. 



pebbles. It goes against my previous experience to 

 place such beds either in the Rauigauj or Barakar divisions of the 

 Damudas, but immediately above them is a grey earthy shale, coloured 

 here and there by carbonaceous matter, in which fossils of true Barakar 

 type, of the genera Glossopteris and Vertelraria, were found, and I have, 

 in consequence, accepted the evidence as decisive of the horizon. 



In the Ganjra Nala, where the road from Pali to Maliagura crosses 



it, sandstones very similar to those in the Waidka 



Ganjra Nala. 



valley may be seen on either side of the ford. 

 They are nodular, texture granular, felspar slightly decomposed, and 

 colour either somewhat yellowish-grey or reddish-grey. 

 The general dip is to the north and at low angles. 

 Coal occurs in several places, but just as in the other fields there is 

 only one main horizon, so the same feature is 



Outcrops. 



repeated here. The most noted out-crop is that 

 in the J6hilla river, where the Ganjra Nala joins it. A shallow boring 

 (1882) was sunk on it to get a fair reading of the 



Jdhilla boring. , 



general thickness ot the seam, and the result 

 showed a great advance on my measurements at the surface. 



As a point of interest I place the two sections side by side : — 



ft. in. ft. in. 



No. 2 Jdhilla Valley Bore-bole. Surface section. 



1. Dark surface soil . .10 



2. Sandstones . . .50 Sandstones 



( 173 ) 



