Sec. 1.] DETAILED DESCRIPTIONS. 



81 



Ascending from the low ground of the valley towards the fort, the 

 usual purplish quartzite-sandstones are traversed, but the hill itself is 

 formed of fine flags and flaggy shales, slightly calcareous in some places. 

 The lower portions of them frequently exhibit the fine rippling so 

 characteristic of the Vindhyans, higher up the beds are smooth and 

 levels their colour varying from light greenish-gre}^ to deep red, 

 some are concretionary and sandy, and all have so perfectly unaltered 

 an appearance, that a geologist is disappointed when he finds them 

 unfossiHferous. (a) 



Immediately south of Gunnoorgurh, between it and another hill of 

 Trap south of Gun- Vindhyans, is a valley, the bottom of which is 



noorgurh. i p , i -i < i ■ ^ '-, 



composed oi trap, whilst about 6 miles west-north- 

 west of Gunnoorgurh, a small hill of Vindhyans occurs surrounded by 

 trap. These two circumstances are additional proofs of the non-faulted 

 nature of the Vindhyan and trap boundary, and shew that the views 

 above expressed of the Vindhyan escarpment being due to denudation 

 in pre-trappean times^ and not to subsequent faulting, are correct. 

 The low ridges which stretch out into the plain of the Nerbudda 



Hills nortli-east of north-east of Murdanpoor, consist of fine purple 



Murdanpoor. i , t t , , . 



sandstone and conglomerate, enclosmg semi an- 

 gular pieces of purple quartzite, decomposed fragments of metamorphic 

 rocks, and some small flakes of mica. The beds are much weathered, 

 and perhaps calcareous. All the Vindhyan hills in this part of the 

 Nerbudda valley have a very peculiar appearance, illustrated in the 

 accompanying sketch by Mr. Wynne (Plate VI). 



As has been stated, a small section of the Vindhyans is seen in 



the Nerbudda, east of Murdanpoor. A lov/ hill 

 Nerbudda east of Mur- . i » i • i • • ■, 



danpoor. Just south of the river at this spot, is also 



composed of these rocks. 



(a) As before mentioned, these beds, the description of which is copied from 

 Mr. Wynne's note book, have been ascertained by Mr. Mallet to belong to the Bundaii' 

 division of the Vindhyan series. ^ 



' /- ( ^43 ) 



