90 BALL: GEOLOGY OF AUKUNGA AND HUTAR COAL FIELDS. 



The last area occupied by these rocks is in the bed of the Aurunga^ 



at Deobar. Close to that village there is a section 

 Outlier at Deobar. 



of some fine-grained greenish beds, which are 



possibly referable to the Panchets, as has been stated on a previous page ; 



these are covered up by a set of bright-red sandstones and shaleSj which 



have some local peculiarities, but may, I think, safely be referred to the 



Mahadevas. Towards the base there are grits, which are not readily 



Lithological charac- distinguishable from Barakars, but nothing 



teristics. could be stronger than the contrast afforded ,by 



the warm brick-red and purple hues of the topmost beds, to the cold, stone 



greys and dirty whites of the Barakar beds. In their physical charac- 



p, . , , . . teristics these beds differ from normal Mahade- 



tics. vas in that they do not rise to form hills, but the 



Aurunga discloses long scarps, 20 to 30 feet above the bed of the river. 



They form a shallow synclinal resting with apparent conformity on 



a very much thinned deposit of Barakars, The 



total thickness was not accurately ascertained, but 



may perhaps be about 250 feet. 



From the occurrence of ferruginous platy beds at the base of the sec- 

 tion north of Nowagudha, which more closely resemble some of the 

 beds of the eastern localities than do the higher members of the se- 

 quence, I think it possible that the latter belong to the very highest 

 zone in the whole area. 



90 ) 



