SANDSTONE SERIES. ' 11 



small isolated hill called Koda Dongri, consists of pale buff argilla- , 

 ceous sandstone, very hard and compact; and containing pebbles of 

 purple and white quartzite, and of very compact fine sandstone, aU 

 probably derived from the Vindhyans. It is far from clear to what 

 formation this rock should be assigned; but similar beds are sometimes 

 found in the Talchir group. The stratification is vertical, striking east 

 and west; and the rock is much cut up by quartz veins. Another small 

 hill; rather more than a mile north-north-east of Koda Dongri, consists 

 of brecciated quartz rock similar to that found on lines of fault, and still 

 farther to the north, near the Kanhan river; metamorphics are exposed. 



b. KdmtJd group. — No rocks which from their mineral character 

 can be identified as belonging to the true Damtida formations (Barakar 

 and Raniganj groups) of Bengal and the Narbada valley, have as yet 

 been found near Nagpiir. The beds containing coal to the south near 

 Chanda, on the other hand; are similar in character to the Barakar group. 

 The Kamthi bedS; the relations of which to the Damudas proper will be 

 discussed in a subsequent page; occupy a considerable tract of country 

 north and north-west of Nagpur, a great part of the area being, however, 

 concealed by alluvial deposits. They also appear in some inliers within 

 the trap country. 



The north-western extremity of the sandstone tract is at Kelod, 

 where coarse felspathic grits are seen dipping to the 

 north, in which direction they are faulted against 

 the metamorphics. Very little is seen here, aU the rocks being covered 

 to the east and south-east by alluvium, while, to the west, both sand- 

 stones and metamorphics disappear beneath the trap. 



From Kelod to Saoner, about six miles south -south- east, no sand- 

 stones are exposed. South of the latter place, 

 Saoner. 



brown grits and lilac clays or decomposed argilla- 

 ceous sandstones crop out from beneath the traps with an undulating dip. 



( 305 ) 



