ARCHAEAN AND PLUTONIC ROCKS. 73 



more ancient looking facies, and I am in favour of regarding them as 

 of the age of the archaean gneiss. At the time of my visit the Tunga- 

 bhadra was in flood, and I could not make out for certain whether 

 these schists cross the bed of the river into the Raichur Doab. They 

 have a strike of N. 5 to io° W. with a doubtful dip. 



Westward of the schist band appears a typical hornblendic granite 



Hornblendic granite largely developed and well seen. It is of a dark 

 west of Manchal. purplish brownish grey in colour. The next im- 



portant outcrop westward along the Tungabhadra is a micaceous 

 banded granite gneiss, which extends far up the bed of the river from 

 the village of Manchal (nameless in sheet 58). 



Seven miles south-west of Manchal is a great development of 



Granite near Nandi- granite in low hummocky masses to the south and 

 varam - south-east of the large village of Nandivaram. 



Four miles to the north-east of Nandivaram is a group of tors, the 

 central one of which is a fine tower-shaped block, some 30 feet high, 

 and a striking object on the black plain. 



Not quite 7 miles south-west by south of Nandivaram, overhanging 



The Emmiganur tne village of Murvani, is the very picturesque 

 group of hills. fort-crowned hill of the same name, which 



forms the western end of the Emmiganur group of hills. The hill 

 consists of a seemingly hornblendic granite, probably the same as 

 forms the big hill to the south-east, which is an unquestionably horn- 

 blendic granite. In both these hills the horizontal joint series is largely 

 developed, and the castellated structure consequently well shown. 

 In the eastern hills of the Emmiganur group pale grey micaceous 



granite is largely developed. In parts much 

 Kaddimetta hills. 5 . 



banding is seen, but it is not general. The 



Kaddimetta (Kuddametla) hills, 4 miles east-south-east of Emmiganur 



consist of moderately fine band grained porphyritic hornblendic grey 



granite, in which both the felspar and the hornblende show distinct and 



shapely imbedded crystals, the former pink, the latter dark green 



or black. 



( 73 ) 



