MAHADEVA SERIES. 45 



Including this sub-group with the lower rocks of undoubted Barakar 

 age, there is a total maximum continuous thickness o£ 2,750 feet in 

 Hutar field, the line of section being measured in the valley of the 

 Supahi from Toleh or Tiharo to the foot of the Doothoo Hills. 



Section 4. — Raniganj Geoup. 



Since within our area representatives of this group are alone found 

 in the Aurunga field, it will be better, as avoiding unnecessary reiteration, 

 to refer to section 3 of Chapter V for a description of them. The maxi- 

 mum thickness I estimate at from 900 feet to 1,000. 



Section 5. — Panchet Geoup. 



The above remark applies to the rocks of this group also. An 

 account of the Aurunga field Panchets will be found in section 4 of 

 Chapter V. The maximum thickness does not exceed 700 feet and is 

 possibly less. 



Section 6. — Mahadeva Series. 



In the table given on page 38 it will be seen that this series 

 is represented in all the fields from Karanpura to Tatapani which lie on 

 the same line of strike. Not only is the correlation fully established by 

 the identity of lithologieal characters, but the physical features of the 

 successive plateaux or groups of hills occur with an extraordinary repeti- 



Deposits of the several *^°° ^^ minutise. The conclusion from these facts, 

 fields once continuous. that these now detached areas are the remnant of 

 a once continuous deposit seems to be unavoidable. 



The lithologieal characters which are thus constant for the distance 



Lithologieal charac mentioned are somewhat different from those of 

 *^^'^' the deposits in the more eastern fields of Bokaroh 



and Eaniganj. Notable in this respect is the scarcity of cono-lomerates 

 and the absence of that form to which the name of pudding stone mio-ht 

 be applied. On the other hand, there is a very considerable resemblance 



Eesemblance to Hingir between these rocks both structurally and lithologi- 

 ^^^*^^'- cally, and those of the Hingir field, whose fossil 



( 45 ) 



