COUNTRY NORTH OF THE SON AND WEST, ETC. 1 55 



the stage is apparently composed of thin-bedded limestone of the 

 same kind and character as on the west, and no indications of a 

 band of shales such as would correspond to No. 10 of Mr. Mallet's 

 sub-divisions could anywhere be clearly discovered. These shales 

 are, however, stated to occur between Rajgurh and Rewasin Hill. 1 

 That Rajgurh is probably a misprint for Ramnagar would 

 appear from the occurrence in the maps supplied for survey of a 

 locality of the name of Ramnagar in about the identical position 

 of " Rajgurh" in the map accompanying Mr. Mallet's Memoir. 

 Taking Ramnagar and Reiwas Hill, then, for " Rajgurh " and " Rewa- 

 sin" Hill, one can only remark that in this area hardly any clear 

 exposures of even the upper beds of the stage are obtainable, to say 

 nothing of an intercalated band of shales in them. At the foot, 

 however, of the scarp by Baghawa, Diholi and a few other localities, 

 1 certainly observed debris of what looked like argillaceous shales; 

 but as in none of these places could I discover any indications of 

 lamination or bedding in them, it was not possible to make sure 

 whether what was observed was the debris of the shales washed 

 down the slopes from above, or really shales in situ. 



Relations of the lower Vindhyan system. — The nature of the 

 Kaimur-Rohtas junction has rather been a matter of doubt and 

 Kaimur-Rohtas junc- ""certainty, for while some have asserted, 

 t,on * though rather feebly, that there might not be 



much of an unconformity here, others have, on the other hand, strong- 

 ly maintained that the break indicated at this junction is so great as 

 to justify the full and complete separation of the two series of beds 

 that meet at this point. 



Over a good extent of the area under review circumstances were 

 anything but propitious for a close scrutiny of 



Drawbacks to the , . . • » . 



close examination of the the junction oi the Kontas with the Kaimurs 



junction. , . . 



above. ror the junction runs along the 

 Kaimur scarp either at or by its foot or a little way up the scarp, 

 positions exceedingly favourable for the gathering of debris of shales 



1 Mem., Geol. Surv. Ind,, Vol. VII., pp. 42, 43. 



( 155 ) 



