BUNDELCUND. II 



layers again, and among them is a clue to the rock just described. A 

 single one of these thin layers often shows small waves of contortions, 

 the spaces caused by which are filled in with compact silex, the enclos- 

 ing layers not being in the least affected."* I find it difficult to 

 imagine by what kind of action such a result is produced, but it is 

 similar, on a very small scale, to the phenomena presented by the form- 

 ation itself or at least by its lower members. " An alternation of such 

 thin and thick beds is seen for about 200 yards — the run of the section 

 being rather oblique to the strike, there are then about 300 yards of 

 rather covered ground, similar rocks showing at one or two spots until 

 we come upon the very crumbling black shales with subordinate layers 

 of cherty shales — same dip but troubled, showing sharp local contortions. 

 In some of these beds are strings of large flat spheroidal concretions of 

 black hard limestone exactly like those in the beds about Burdhee in 

 the Sone valley. Under these again slaty schists predominate in per- 

 fectly regular unbroken beds going at 20° to S. E. by S., these pass 

 down into blue flaggy limestone which soon changes into the yellow 

 subcrystalline thin bedded variety." On the opposite side of the river 

 great spreading sheets of coarse sandstone are seen 



Sandstone. ,. . i i i .i i mi 



dipping at a low angle under the caicareo-argillace- 

 ous rocks just described, and they continue at this inclination, thus form- 

 ing the sloping face of Pundoah hill. In this section the lithological and 

 stratigraphical characters of the two lower Semri groups are fairly repre- 

 sented. I shall describe them more fully before I take up the others. 

 At the upper end of the valley about Bilha the Semri shales and 

 limestones are seen with the same troubled bedding 

 as in the Kane, but in the small terminal valley 

 leading up to Chopra one can get an idea of their former extension. They 

 are seen to stretch up along the surface of the massive sandstone till near 



* Where no reference is given, passages in inverted commas are extracts from my field 

 book. 



