1£ hughes: wardha valley coal-field. 



sandstones, while the latter occur only in slight force on that side, and 

 occupy a large area on the east or opposite side. 



Sandstone grotcp. — The most pronounced rocks are the fine-grained, 

 vitreous sandstones, with a uniform tinge or dashes of red through them ; 

 the brownish sandstones and the purplish shales and quartzites more or 

 less coarse. The most difficult to place are the sandstones, which are 

 open in texture or highly ferruginous. They might easily be mistaken 

 for Kamthis. 



There are no outcrops of this group within the field, but they are well 

 seen in the remarkable and isolated mass of Pirzagarh, and in the table- 

 land of Taroba. 



They also form the western front of Malagarh hill of the Wun district, 

 which is for the most part constituted of Kamthi 

 sandstones. As there is here no physical break 

 between the strata of the two groups, a doubt may arise regarding the 

 correctness of a separation ; but I think the greater degree of disturbance 

 in the rocks that I define as Vindhyans (a disturbance corresponding with 

 that of the Vindhyan limestones with which they are in contact), the 

 greater metamorphism of the sandstones, and the existence of beds which 

 are not seen in the Kamthi group, are in favour of dissociation such as 

 I have indicated on the map. Bearing on this question, there is an in- 

 structive little section in a small island in the Pern Ganga, opposite 

 Chikli, where the stratigraphical features of Malagarh hill are repeated, 

 but on a minor scale, and here the decision of my colleague, Mr. King, 

 who at my request examined the section, was " that the quartzites 

 (Vindhyan) are easily distinguished from the true sandstones 

 (Gondwaua)." 



The continuation of Malagarh hill to the south is broken by the 



valley of the Sewara nala, but beyond that river 

 Yenak hill. . - .. , 



the sandstones again rise and constitute Yenak 



hill, whose greatest elevation is 1,005 feet above the level of the sea. 



( 1* ) 



