82 



MALLETj VINDHYAN SEUIES. 



in a cutting to drain the tank there^ about twenty feet of red clunehy 

 shale is exposed, which in part is greenish -white, and contains one 18 

 inch and two or three smaller bands of marl. Again south-east of 

 Oomree in the Mohunna stream we meet heavy red shale with minute 

 calcareous strings, which are chiefly in the planes of bedding, but many 

 penetrate the rock in other directions. Some beds pass into a kind of 

 impure, earthy, red and white limestone, which, in common with the 

 shale, generally has a glistening sub-crystalline appearance, and is often 

 marked by rippling. The following section in the Bichia stream, about a 

 mile south of Burrigaon, is a very characteristic one of the Grunoorgurhs 

 somewhat higher up in the series. 



Ft. In. 



(«), 



Very brittle dark red shale seen 



... .1 







(b). 



Light yellowish -grey marl 



... 



6 



(c). 



Red shale like (a) 



... 



6 



id). 



Marl like (S) 



... 



4 



(e). 



Ditto rather shaly and reddish 



... 



8 



if)- 



Yellowish-grey ditto with a little reddish 



... 2 



8 



iff)' 



Red shale like («) 



... 1 



4 



ih). 



Tolerably pure limestone 



... 



1 



(i). 



Red shale like (a) 



... 



3 



(i). 



Hard pinkish-grey limestone 



... 



2 



ik). 



Red shale like (a) 



..= 1 



6 



(0. 



Marl like (6) 



... 



1 



im). 



Red shale ; more calcareous, with some marl and two 



or 







three half-inch bands of limestone 



Total 



... 2 



6 





... 11 



7 



A mile or so west of this we find, in a small isolated hillock, alter- 

 nate beds of red shale and marly light-yellowish limestone, some of 

 which are slightly contorted and brecciated on a small scale ; fragments 

 of red shale being re-cemented by the calcareous element which contains 

 small cavities lined with calcite. 



The red shale which is, generally speaking, undisturbed and 



horizontal, gradually becomes more and more calcareous until it passes 

 ( 82 ) 



