54 MALLET, VINDHYAN SERIES. 



dip is participated in by the Rewah group, but gradually dies out to the 

 north, and at a few miles from the scarp the strata are usually nearly 

 horizontal. From the general hardness and massiveness of the Kymore 

 sandstone, it gives rise to very bold precipices and ' headlands,^ as may 

 be seen anywhere east of Rewasin hill. In the other direction the 

 sandstone becomes thinner and the outline of the scarp less bold. West 

 of Badanpur it is reduced to less than 150 feet, and the Lower 

 Vindhyan inliers, north-east of Kuttungee, are in contact with the 

 Rewah sandstone. 



It is, however, by no means certain that this extinction is final. In 

 Possibl d 1 t ■ ^^® Rewah country the upper Rewah sandstone 

 Nerbudda valley. jg i,^^ ^ f^^ hundred feet thick, while the 



accumulation of sandstone in the Nerbudda valley, which we have colored 

 as belonging to that group, is several thousand. Now, as the lower 

 Rewahs die out west of Badanpur, and there is no marked lithological 

 difference between the upper Rewah and the Kymore sandstone, it is- 

 quite possible that those rocks in the Nerbudda valley, near Hoshungabad 

 and Burwai, include 6oU, although we can no longer distinguish them. 

 There are indeed bands of shale met with (as west of Jame-hur and 

 at Mehalpur) which may represent the lower Rewahs, although their 

 lithology, which is the only guide we have to go by, is not sufficiently 

 strongly marked to express a decided opinion either way. There is 

 nothing improbable in supposing the lower portion of the Nerbudda 

 sandstones to be Kymore. It would merely indicate that the overlap in. 

 the neighbourhood of Bilheri, is local — a case, which would be perfectly 

 analogous to one of which we have indubitable evidence, the dying out 

 of the lower Rewahs near Hutta, their complete overlap north of 

 S%ar, and their revival in the Gwalior country. There is again the 

 instance of the lower Kymore sandstone west of Burdhee which we know 

 exists, but which cannot be distinguished from the upper on account of the 

 absence of the Bijigurh shales. In connection with this it is perhaps 

 ( 54 ) 



