AUllUNGA FIELD : MAHADEVA SERIES. 87 



In one place oi)ly in the Sukri section near Semuria did I meet with 



^ , any case, of the occurrence of carbonaceous matter 



Carbonaceous matter. 



in these rocks; the traces of it were very slight, 



being- little more than black stains. A. constant outlook for fossils in 



these beds did not result in the discovery of a 



Fossils. . ^ n ' 



single fragment. Some of the thin micaceous shaly 

 sandstones resemble the E^theria beds of the R-aniganj area, but I found 

 in them no trace of any organic remains. 



From the varying width of the zone of these rocks found surround- 

 ing the base of the Mahadeva hills, the pro- 

 Overlap by Mahadevas. ,..,,. 



bability that they are in places overlapped is very 



great. Indeed, at Toobed, this seems certainly to be the case; but besides 

 this overlap unconformity there is, I believe, in the sections afforded by the 



Disturbance unconfor- «*^^^°^^ ^'^ *^^ ^^"^^ heiv^eeu Hurdee and Chehora 

 ^i^y- hill, south-east of Subano, evidence of regular dis- 



turbance unconformity : there is a steady dip southwards of a thickness of 

 several hundred feet of the Panchets, almost up to the very foot of the 

 Mahadeva scarp. There is certainly not interval sufficient for this whole 

 thickness to be turned over so as to dip normally under the Mahadevas. 



Since, as I have shewn when treating of the Mahadevas generally, 

 there is great probability of a considerable break in conditions of depo- 

 sition, if not of time, between the Mahadevas and all preceding groups, 

 the wonder is that there should not be more numerous cases of unconform- 

 able superposition to be enumerated. 



The estimated thickness of the Panchet group in this area is 7U0 feet. 



Section 5. — Mahadeva Series. 

 The principal area in the Aurunga field, occupied by these essentially 

 hill-forming rocks, is a raised tract, extending in a north-west 

 south-east direction for a distance of over six miles from Kaima to 

 Hurdee. The beds dip inwards from the opposing scarps at angles of 

 20° and under, so forming a synclinal trough, at the centre of which 

 the. beds are for the most part horizontal. 



( 87 ) 



