88 W. BLANFORD^ WESTERN INDIA. [PaRT II. 



From Chandgurh for 2 or 3 miles to the west, the surface rock, north 



of the Nerbudda, appears to be trap, covered by 

 West of Chandgurli. 



immense masses of the same peculiar conglo- 

 merate as that seen in the river. This forms a low range of hillocks 



south of Chandgurh. It consists of pebbles 

 Conglomerate. 



and rounded blocks, often a foot in diameter, 



and, for the most part, of Vindhyan quartzite -sandstone ; these pebbles 

 are contained in a deep red sandy matrix. This is usually but slightly 

 coherent, though sometimes hard. 



If this conglomerate be a deposit made by the Nerbudda, the 

 course of that river at the time the bed was formed must have been 

 very different from what it is now, for while the mass of the con- 

 glomerate consists of Vindhyan pebbles, those of metamorphic rocks 

 being rare, the Vindhyan pebbles occurring in the present river bed are 

 few in number, when compared to those of the metamorphics, and 

 small in size, having been washed down from near Hoshungabad and 

 Murdanpoor, below which no rocks of the series occur in the river^s bed 

 till below Chandgurh. The materials for the conglomerate must there- 

 fore; in all probability, have been derived from the west, that is, from 

 the direction towards which the river now flows. 



About 3 or 3 miles west of Chandgurh, the Vindhyans come in 



Vindliyaiis and Bija- again with a scarp which stretches to the north 



wrs near Chandgurh. ^^ ^^^, ^^ ^^^^^, Sutwas. It is noteworthy that 



this boundary is very nearly parallel to that which marked the limit of 

 the samexocks to the west, between Bhopal and Murdanpoor. Along 

 ibhe edge of this scarp and to the east of it, there are some few exposures 

 of Bijawur beds, interesting, because of the prevalence of a peculiar 

 hornstone-breccia in them, and of the evidence afforded of the complete 

 unconformity with which the Vindhyans rest upon them. The beds are 

 much obscured by the conglomerate of rolled Vindhyan pebbles already 

 alluded to. 

 ( 250 ) 



