32 MALLET, VINDHYAN SERIES, 



for a thickness of about 80 feet. Above it is represented by a fine 

 sandstone, in which are several bands of sUicious limestone, occurring in 

 2, and 3 feet beds, sometimes intercalated with calcareous sandstone ► 

 The thickness of limestone where greatest is some 40 or 50 feet. la 

 places some beds of it seem to have altered to a chalk-like appearance. 

 Above the limestone the rocks become more shaly, with quartz and 

 considerable quantities of iron, which supplies ore to a few native 

 furnaces. These ferruginous beds, although of trifling thickness, are 

 very constant, at least towards the east. Above them the limestone- 

 No. 2 comes in. 



In some of the narrow ridge-like outliers scattered over the slate 

 area south of the main spread, and which can generally be recognized 

 at a distance by their peculiar configuration, the bottom conglomeritic 

 sandstone attains a greater thickness than elsewhere, a fact probably 

 connected with the original area of deposition. In the outHers, however, 

 which occur in the alluvium south-east of Rotasgurh, the congloijierate 

 is entirely absent, as well as the next two members of the series, and 

 beds apparently representing the trappoid band. No. 4, rest directly on 

 the crystalliae rocks. There is a group of hillocks 10 miles north of 

 Sasseram, which have all the form of granitic ones, but examination 

 proves them to consist of a very coarse quartzose and felspathic sand- 

 stone, containing abundant roimded pebbles of a red felspathic rock and 

 quartz. From their isolation in the alluvium their relations are uncer- 

 tain ; they might be Kymore, but the likeliliood seems to be that they 

 represent the bottom rock of the lower Vindhyans. 



Between Agoree Klias and Burdhee the junction between the latter 

 and the older rocks ^is obscured by alluvium, and the bottom conglo- 

 merate is not seen, although it probably exists along some part of this 

 interval. From Burdhee westwards to near Kubra hiU the low ridge of 

 thin-bedded shaly sandstone, with occasionally a thicker bed of coarse 



( 32 ) 



