248 NERBUDDA DISTRICT. 



In a section exposed by the Kanlian River a couple of miles north 

 of the village and old fort of Hurriaghur, a line 



Breccia lines among 



some of the newer for- of fault rock is crossed, which traverses the Da- 

 muda sandstones. The beds normally soft, fria- 

 ble felspathic sandstone have become glassy quartzite, as if hardened by 

 heat, numerous veins of quartz and nests of vein-quartz are seen to per- 

 meate the mass, which weathers with a honey- combed surface from the 

 unequal hardness of its component parts, and it becomes apparent that 

 the original rock has been crushed and shattered by mechanical violence, 

 and recemented by infiltered silica into the hard flinty mass we now find 

 it. The continuation of this line may be traced across the flat country by 

 the numerous blocks of white vein-quartz which mark its course, and 

 which seem to have been derived from a great quartz vein or dyke. 

 When more closely examined, however, the true breccia was always found 

 to be the source from which the fragments came, and its out-crop is, as 

 stated, marked by their presence. Many of the minor hills which rise 



parallel and near to the south boundary of the 

 Examples of this. 



lower Pamuda and Talcheer rocks of our map, 



are due to the great hardness of this breccia. The Muchna River flows 



close under one of these a mile north east of Shapur ; the range which 



separates the valley of the Sooki Nulla from that of the Bhora is another 



case of the same phenomenon. Another well marked ridge of breccia 



runs across the flat ground farther to the east, or south east, and near 



it the villages of Moka and Banspura may be seen on our map : again 



Rawundeo hill is formed of the same rock, and its nature and habits may 



be well studied there. 



Where these lines of breccia traverse the sandstone beds, that rock is, 



_,„ L j, ., ., as has been stated, much cut up by little veins 



Effect of these on the 5 l J 



sandstone. f w hite quartz, and the mass seems permeated, 



saturated as it were, with infiltered silica, the traces of original structure 

 and bedding are obliterated, and a vertical jointing generally obtains 



