COUNTRY NORTH OF THE SON AND WEST, ETC. S49 



any of its neighbours, it has been able to give rise to that prominent 

 range of hills, which commencing from the Andhiari Nadi (the westerns- 

 most limits of the area under report), 2\ miles almost due west of 

 the confluence of the Mahanadi with the Son (Lat. 24 5' about, Long. 

 8i° 3'), stretches east by north along its left 



Forms a prominent scarp. 



bank, forming a great and prominent scarp over- 

 looking the Son, till it reaches a point due south of Ramnagar where 

 it leaves the Son, and turning further north continues to keep a 

 steady north-east cou.se. By Marjatpur the zone is much thinner, 

 and as it is followed eastwards (the course of the range here 



becomes east by north again) it still more loses 



Ceases to run as a de- . . . . 



fined range beyond in thickness, ceasing to exist as a distinct thick- 

 bedded hard quartzitic band by Raidooria. East- 

 wards of this we certainly have a range of hills, though less in height 

 and prominence, in about this horizon, composed of shales and thin* 

 bedded sandstone. Such, for instance, is the range that we find run* 

 ning east by north from a point J mile south of Bardela, then 

 north-east (at i| miles south-east of Rampur) and then after 

 describing a curve about 2 miles east of Rampur turns east by north 

 again and runs between Duari and Ghidaora, by Kataoh, Kua, 

 Churhat and Dowara, beyond which it is split up into still 

 smaller and minor ranges. Such are the low hills (striking W. 

 by S. — E. by N.) about £ mile south of Chilari and Lakhaora 

 and by southern Patpara. Between Patpara and Koludi even these 

 minor hills disappear. Alluvium predominates so from here east- 

 wards as to render it impossible to mark the traces of even a continu- 

 ation of the hills observed on the west. As already mentioned, we cer- 

 tainly have, east of Raidooria, where the quartzitic band of sandstone 

 ceases, a smaller range of hills which we .can follow, as shown above, 

 continuously as far as Dowara, it splitting up, as already noted, into 

 minor ranges beyond that point. The reason 



Why difficult to trace . 



the zone beyond why this range cannot be mapped as continua- 



Raidooria. . . 



tion of Zone 111 is twofold, namely, first, the 

 rock Composing this eastern smaller range or ranges is not a hard 



( '49 ) 



