G 2 FOOTE: GEOLOGY OF THE BELLARY DISTRICT. 



Hardly to be considered as a separate group are the hills at and 



around Halakote (Hallakota), which consist also 

 Halakote hills. 



of pale grey granitoid, perhaps rather more dense 



in texture. The rock freshly exposed in the quarry in the hill immedi- 

 ately east of the high road at Halakote is of a felspatho-quartzose 

 variety, with mica for the ferro-magnesian element. The lamination is 

 obscure, but a great joint plane with a low southerly dip gives a strong 

 appearance of bedding. This same nearly horizontal joint-plane 

 crives this hill in particular a very mural appearance as seen from a 

 distance from the north. 



These hills appear to be a direct continuation of the great band 

 Extensions of the runnIn g north-westerly across the Alur sub- 

 Halakote hill. division next to be described. The band is again 



continued north-westward from Halakote and crosses the Tungabhadra 

 at Kenchengod, to reappear in the very picturesque Salgundi hills 

 in the Nizam's territory, and to be finally lost under the cotton soil 

 after forming the bold Rawalkonda (Rawducoonda) mass. 



At Siriguppa, and to the east of it near the Rarevi ford over the 

 Haggari, the prevalent rock is a hornblendic granitoid. Returning 

 southwards, past the Tekkulkote hills and along the left (western) 



Magnetic iron beds bank of the Ha gg ari ; 0nl y a sin g le reall y notable 

 of Gudadur hill. outcrop has to be recorded, and this is the Guda- 



dur hill, 12 miles north-north-east of Bellary. The hill, which is a low 

 one, consists of highly quartzose granite, supporting beds of not very 

 rich magnetic iron associated with a pink felsitic gneiss, both much 

 contorted. Whether the position of. the iron and felsitic beds to the 

 granite be one of unconformity, or of conformity, it is hard to tell for 

 certain, the evidences are if anything in favour of the latter position. 

 In a gully north-west of the hill another very small magnetic iron bed 

 is seen to be distinctly intercalated with the granite and in no wise 

 metamorphosed, as if the latter had been intrusive. 



South of Bellary the grey granite extends for two or three miles, 



Halakundi gneissic and after a break of a mIle or S0 > a belt of 



band - banded granite gneiss is entered upon, which 



( 62 ) 



