NERBTJDDA DISTRICT. 125 



suggested to him that this pegmatite may: possibly be subsequent fn 

 origin to the trap (the overflowing trap of the district). Nothing how- 

 ever seen within the area of our map would bear this interpretation. 

 Instead of our having reason to suppose that any portion of the 



granite of this area can be referred to an acre 

 Only one granite period. . l » 



posterior to that of the overlying trap, all the 



evidence goes to show that the whole of the granite seen belongs to the 

 same geological era. The only observed fact tending to suggest a different 

 conclusion is the existence of veins in the granite of the Gurra Hills- 

 but these are probably veins of segregation rather than intrusive • be- 

 sides these being intrusive would be quite insufficient to establish the 

 existence of granite of two distinct geological ages. 



Considering the granite then as all belonging to one Geoloo-ical era 



it was subsequent in origin to the schist rocks as 

 Age of the granite, 



is evident from what is seen in the following 



sections. 



One of the minor tributaries of the Tawa River exposes a section 



near the village of Salibanta, 8 or 10 miles south 

 Salibanta Section. 



east of Shapur (on the Hosungabad and Betul 



road) where several fragments of hornblende schist are completely 

 enveloped in a granitic mass ; the granite has apparently been forced 

 among the beds of the gneissose rock which are seen broken and con- 

 torted in contact with it and intensely altered in its immediate vicinity. 

 In the Nerbudda between Jelounda and Hindia, a mass of granite 



is seen which breaks up the beds of the schistose 

 Jelounda Section. 



quartzite and encloses large fragments of it. 



In each of these cases the bedded rock is unquestionably part of the 



Granite subsequent to metamarphic schistose series of the district, and 



the Schists. the gran j te j n each is c i ear ] y traceable to some of 



the great granitic masses, and the latter is, in both, palpably more recent 

 than the former which, as has been stated, is altered in its vicinity. A few 



