I08 rOOTE: GEOLOGY OF THE BELLARV DISTRICT. 



eluded pebbles examined by fracture were quartzose : they are 

 numerous, and show no special distortion at this place. Above the 

 trapflo* No. 24, and close to the foot of the main range, is another 

 great thickness of conglomerates with similar dark matrix and iden- 

 tical general external features. Dark-green schist also occurs 

 largely. Many of the included pebbles are of large size. Many con- 

 sist of banded grey hornstone like that of the Joga high-level section : 

 one, very large one, was found to consist of coarse gritty quartzite. 



The third of the streams uniting to form the Joga nullah de- 

 Gangadi ravine and sc ends from the main range by a very fine ravine 

 called Gangadi, which nearly equals the Ram- 

 gol in grandeur. It does not cut so deeply into the mountain side 

 and is full of dense vegetation, bamboo predominating. During 

 the rains there must be a pretty waterfall, some 20 feet in height, 

 at foot of the range, while a few yards below it a large but shallow 

 pothole forms an exquisite miniature tarn, full of limpid water, 

 with water-lilies and ferns. The valley opening from the top of the 

 Gangadi ravine is too thickly overgrown with low forest to show 

 the rocks it has been excavated in. 



I am not able to correlate the Papanaykanhalli section closely 

 with the Joga section, having had no opportunity of re-examining 

 the intermediate tract as exhaustively as I could have wished to do. 

 The thick green schists are in all probability the extension of the hard 

 chloritic conglomerates of the Ramgol stream valley. The number of 

 haematitic beds has decreased very considerably, probably by thinning 

 out altogether. 



There is a very interesting section of conglomerates, where the 

 The "Water slide" stream which drains the deep valley on the 

 section. eastern side of Jambonath Konda breaks 



through the outer ridge. The section here seen is as follows : — 



7. Trappoid, green. 

 6. Schist, green. 



Gap. 

 5. Conglomerates with siliceous matrix. 

 4. Schists. 



3. Conglomerates and grits, green schisty matrix. 

 2. Hornblendic rock, slaty ? 

 1. Schists, dark micaceous argillites. 



( 108 ) 



