ARCH^AN AND PLUTONIC ROCKS. 55 



The granite of the Vijayanagar hills is a pale grey when freshly 



broken, but weathers a pale brownish pink after long exposure. In 



texture it is moderately fine grained. References to some of the many 



remarkable buildings, and to some fine monoliths to be seen among 



the ruins, will be found in the chapter on Economic Geology. 



In the eastern part of the Hampi group, rocks of the same charac- 

 ter are largely distributed and form much higher 

 Bookasagra hills, l 



h ills west and east of Venkatapur and Bookasagra, 



where they rise to a height of 2,128' in the Trigonometrical tsation 

 peak close to Cunnavay Timmapur. They occur also largely in the 

 hills south of the valley leading from Kamalapur to Daroji as far east 

 as Nellapur ; but beyond that place the pegmatoid felspatho-quartzose 

 variety occurs, and covers a considerable area to the south of Uppar- 

 halli (Ooparhully). 



5. The Bellary Sub-division, — This sub-division includes the plu- 

 tonic and metamorphic rocks to be seen between the Copper mountain 

 band and the Haggari river, from the Tungabhadra south-south-east- 

 ward to the great cotton soil spread around the junction of the Haggari 

 and Janagahalla rivers, and which separates the Bellary from the Raya 

 Drug rock areas. Almost the whole of this area is occupied by 

 great spreads of black soil, out of which the granitoid hills rise like so 

 many islands. The number of important outcrops of granite in the 

 sub-division is not very large ; but it includes some of special 

 interest, such as the Bellary hills, Kapgal, and the Kurgod and 

 Tekkulkote hills. 



There are few places in the district, with the exception of Vijaya- 



„ .. , . fl nagar, where the rocks can be so well and easily 



Bellary hills. ° 



studied as at Bellary, thanks to the great 

 number of quarries which have been opened for local consumption. 

 Of the two hills occurring at Bellary, the north hill shows the more 

 The North hill or porphyritic variety— a coarse "blotchy" fels- 



" Face " hill • 1 " • 1 



patho-quartzose granitoid, greyish in colour 

 where freshly broken, with pink blotches formed by included orthoclase 

 crystals, from 1 inch to \\ inch in length and protruding slightly on 



( 55 ) 



