140 NERBUDDA DISTRICT. 



_ . , , i , , well exposed series of red shales and schists, with 



Lithological characters r ' 



of the Sub-Kymore. g ne q Uar t z it e in thin flag beds, often very ferru- 



ginous. Although the earthy or (if arenaceous) fine grained character of 

 the group is almost universal yet bands of pebbly layers occur, the peb- 

 bles being of jasper, and white .quartz principally. Throughout the 

 whole series, as here seen, a very remarkably developed "rippling" of the 

 flag beds is observable. 



The group here attains a considerable thickness and is in many ways 



„,, . , ., strongly contrasted with the schists below. In 



Ihickness consider- ° J 



able- separating it, however, from these on the one 



„, ;. . x , hand, and from the Vindhyans on the other, it 



The separation of the ' 



Sub-Kymore provisional. mus t be borne in mind that we as yet possess very 

 incomplete data for a final classification. There is much to suggest, and 

 it may ultimately turn out, that the Sub-Kymore group is only a less 

 M , t f th altered portion of this schist series, into which 



scnists - it passes. On the other hand, several consider- 



ations seem to imply a connection between the 

 or of the Vindhyans. 



Sub-Kymore and the vindhyan groups, and some 



of these probabilities will be discussed, when we come to describe the 



rocks of the latter formation. 



In any case however, and whether the group of which we have been 

 _ .„ . „ speaking be ultimately shown to be an integral 



Justification of pre- r a j o 



sent classification. portion of either of the great groups mentioned 



(i. e. | of the Vindhyans, or of the metamorphic series), this classification 

 must hold good to a great extent: the " Sub-Kymore" must remain 

 distinct (if only as a sub-division) from both of its neighbours, in litho- 

 logy, and general aspect, and certainly lies intermediate between the 

 two in geological position. 



If part of the Vindhyan sandstone, then its lowest member ; if connect- 

 ed with the true schists, then the highest sub-division of that great 

 series. 



