172 NERBUDDA DISTRICT. 



muda and Talcheer rocks have been found in the Singrowlie district and 

 the sub-divisions a, b, and c, seem to be considerably developed there. 



From among these coal has been for some years extracted, and the 

 works are carried on both in open quarries, and by pits sunk to small 

 depths on the beds. 



Professor H. B. Medlicott (of Roorkee) reporting on this district in 

 1854 describes these rocks thus: 



" In the Sukneya Nuddi between Miru and the Rehund, and also 



Talcheer of the Sone " at the bottom of Mr ' Burke's new pit, there is 

 valle y- " found a green mud which breaks into cubical 



" fragments, and is much traversed by seams of calcareous matter, prin- 



" cipally on the joint surfaces ; it often contains 

 Boulder-bed. 



" pebbles of the old crystalline rocks, and sonie- 



" times boulders of these of considerable size, occasionally weighing many 



" tons." 



The stratigraphy of lower groups. — Within our area, these Talcheer 



and lower Damuda rocks have been subjected to considerable mechanical 



violence, but with reference to the former the general or total absence 



„ , ,. • of bedding renders it very difficult to come to 



Probably great distur- ° ^ 



bance of the Talcheer, anv positive conclusion as to such disturbances. 



These amorphous deposits are however found to be traversed by those 

 lines of "fault rocks," which elsewhere are known to be the result of dis- 

 placement of the beds across which they run, and to mark in some cases, 



■ :-vr ":.,•"- \i. very considerable vertical, shifts of those beds. 

 Suggested by the iault •> 



rock> These brecciated lines are developed among the 



green muds quite as frequently as elsewhere, and it may, we think, be 

 presumed that among these, they indicate faults as great in vertical 

 movement as similar brecciated lines are known to do among the well 

 bedded portions of the series, where the amount of such movements can 

 be to some extent seen, though often, as has been stated, but roughly 

 estimated. 



