240 NEEBUDDA DISTRICT. 



A little to the east of Muttardeo the Tawa river runs close under the 



base of a spur of the range, of which a section is 

 Remarks on this sec- r ° 



tion. given in the diagram, Fig. 18. This section is ex- 



posed in a little ravine draining into the Tawa at the place. The cliff over 

 the Tawa is composed of the green mud, and earthy sandstone of the Tal- 

 cheer group, (b) here considerably indurated; and the induration is visibly 

 due to an infiltration of quartz. It increases in intensity towards the 

 south, until at the fault line the rock has become a very hard, brecciated 

 mass, retaining little of the original aspect. In the ravine, this is well 

 seen, and the vertical beds of the schist series (a) (here hornblendic gneiss) 

 may be observed in close contact with the breccia, as shewn in diagram. 

 Many parallel ravines shew equally well all the same features repeated, 

 and it is certain that the boundary, considered as a whole., is a fault, at 

 all events east from Muttardeo. To the west of that hill, it appears to 

 be of a mixed character, sometimes faulted, sometimes not. Probably 

 the north face of Bowerghur is also a fault (see 



.Another co.se- 



Fig. 4, p. 151). The hill is formed of granite, and 

 granitic gneiss, and has a sheer precipice of 800 feet on the north, at the 

 base of which the Talcheer beds occupy the flat. 



This south boundary of the Talcheer rocks, taken as a whole, is, as 

 may be seen from the map, parallel to the boundary fault which forms 

 the south side of the Nerbudda valley, and which is (speaking generally) 

 the north boundary of these same rocks, as well as of the Mahadeva 

 beds, as before described. 



It is, of course, not intended to assert that this parallelism is exact, 

 but it is nevertheless a very striking geological feature in the district. 

 No one of these boundaries of the rocks, more recent than the Vind-hyans, 

 is exclusively a faulted boundary, the newer are on the contrary 

 not unfrequently seen resting on the schists, as for instance near Sali- 

 banta in the Salya section and elsewhere : but it is certain that the 

 general direction of each of them was defined by a fault along the greater 



