153 GEOLOGY OF THE SON VALLEY, ETC. 



western band, or is only some extraneous calcareous beds in the 

 Kheinjuas, one cannot be quite sure. 



Zone VI. — These are the shales (argillaceous and arenaceous) with 



some sandstone generally thin-bedded, that come in immediately above 



Ripple-marks not so the calcareous Zone V. The shales are often 



abundant as in Zone IV. finely i aminated and ripple-marked, but the 



ripple-marking is by no means so abundant here as in the shales of 

 Zone IV. The zone is entirely free from calcareous matter. 



This zone is, as we have seen in our typical section by Ramna- 



Difficutly of tracing the g ar > overlaid by the limestone band of Zone VII. 

 band. Thus its upper boundary is also well-defined so 



long as the limestone of Zone VII is traceable, and this is so from the 

 western limits of our area (Long. 8i°o') to near Rampur (Long. 8i° 

 31'). East of this point Zone VII is no longer traceable ; super- 

 ficial deposits predominate to such an extent in these parts that it is 

 impossible to tell whether the limestone of Zone VII has quite died 

 out here or is merely concealed by the alluvium. Hence in the 

 eastern parts of the area, Zone VII being no longer traceable, the 

 shales of Zone VI cannot be mapped separately from those of Zone 

 VIII ; for though their characters are such that they could be easily 

 separated on a clear section, superficial deposits here cover them 

 both alike, rendering any separation impossible. 



Zone VII. — It being a pure limestone band with no sandy or clayey 



Easily distinguished elements in it and altogether purer than the 



from the limestone of 



ZoneV or 11. limestone of Zone V or II, is easily distinguish- 



able from the two latter. 



This is the band that runs by just south of Nando and Mirgaoti 

 The zone as traced and between the two villages of "Khajuri" 



from Nando. q[ map (Qne mi , e g g of Ramnagar )^ an d from 



here, though much concealed under alluvium, it no doubt runs 

 but only as a very thin band, with a general strike of W. by S. — 

 E. by N., as far as the neighbourhood of Rampur. The second band 

 of limestone exposed on the Marhawal Nadi from its mouth (i.e., little 

 short of a mile up the stream from its junction with the Son, Lat. 

 24° 19', Long. 8° 30') is the limestone of Zone VII. 

 ( 152 ) 



