NERBUDDA DISTRICT. 153 



The Talcheer beds are here deposited on an old irregularly denuded 



surface of the crystalline rocks, and on their de- 

 Description of section. 



nuded surface again rest the recent clays and gra- 

 vel of this part of the country. 



No section has been found in this part of the district, showing any 

 very considerable thickness of rocks from the bottom upwards, in con- 

 tinued sequence. Elsewhere such a section does exist and will be des- 

 cribed when we come to the eastern part of the country ; but here, as a 

 rule, the frequent faulting, and numerous trap dykes, so cut up the beds, 

 ~ , , . lA , that a lonp: sequence is never left unbroken. This 



Dykes and faults ob- a * 



scure the section, j s a pp aren t j n the section which will be now de- 



scribed, for not only is the lowest group (the Talcheer portion of the 

 series) not connected with the upper, but the beds best exposed are both 

 faulted, and traversed by dykes, and thus the true measurements are 

 obscured and rendered uncertain. 



The Tawa river, as it flows under Rawundeo Hill, exposes a good 



section of the true lower Damuda rocks. To the 

 Section at Rawundeo. ., 



south the Boulder bed and green mud are seen, as 



has been stated, faulted against, and sometimes resting on the schists : 



here they do not appear. 



The path from Salyia village to the old hill fort of Asseerghur (see 

 map) after passing over the east end of Rawundeo Hill crosses the Tawa 

 river a short distance to the north of it. 



At the ford we find thick beds of the ordinary felspathic sandstones of 

 the formation (subdivision, /, of our list) which have here an irregular 

 rolling dip. These beds soon disappear beneath the surface deposits, and 

 if we descend the stream, are again, at intervals, seen. Not far down a 

 line of fault, marked by a band of brecciated rock, traverses these beds, 

 heading W. 10° N. ; below this again a fine trap dyke, seventy feet wide, 

 cuts across them, and heads due north : the sandstones, as well as the 

 obscure bedding permits of identification, seem to be the same beds all 



H 



