Chap. 6.] w. blanfoud, western india. 37 



On the north of the Vindhyan area^ two great series of rocks were 

 ^, , , described by Mr. H. B. Medlicott in 1859 as in- 



Nerbudda valley beds 

 identical with typical tervenincT between the Vindhyans and the sfneiss. 

 Bijawurs. jo 



Both of these, the Semri or sub-Kymore* and 

 the Bijawurs, contain breccias and limestones, and both have characters 

 in common with the breccias, limestones and other associated rocks of 

 the Nerbudda. But quite recently, Mr. Mallet (who has for many years 

 past been engaged upon the Vindhyan rocks and their associates in 

 Bundelcund and the Sone and Nerbudda valleys, and who has examined 

 the rocks of Chandgurh, the Dhar forest, &c.), has had an opportunity of 

 re-examining Mr. Medlicott^s typical area, and has ascertained, he 

 believes without any possibility of error, that the breccias and limestones 

 of the Western Nerbudda are the equivalents of Mr. Medlicott^s 

 Bijawur series. This name therefore being that first applied as a dis- 

 tinctive title to these rocks will be employed in describing* them in the 

 present report.f 



In the tract of country east of Chandgurh and the Little Tawa, 



these rocks have been entirely mapped and 

 Places where Bijawurs ^ 



occur in Western Ner- separated from the metamorphics by Mr. Mallet, 

 budda valley. 



It is in the western part of the area alone that 



their boundaries have been determined by the Bombay party of the 

 Survey in detail. West of Chandgurh these rocks appear in the follow- 

 ing places, all north of the Nerbudda : — 



1. In the Dhar forest, where they cover a very considerable area; 

 metamorphics only being seen in two or three isolated exposures which 

 are on the verge of the trap country to the north. 



3. Near Burwai, in the valley of the Chorul. This field of Bija- 

 wurs is only separated from the last by a strip of Yindhyans and trap. 



* These are now classed by Mr. Medlicott as a lower sub-division of the great 

 Vindhyan series. 



t It is necessary to refer to my colleague's unpubhshed reports to explain the nomencla- 

 ture I have adopted. The subject will be treated at length by Mr. Mallet. 



( 199 ) 



