I4S FOOTE: GEOLOGY OF THE BELLARY DISTRICT. 



4. The Penner-Haggari band. 



Only a section some 38 miles in length of this great band of 

 Dharwar rocks lies within the limits of Bellary District and stretches 

 south-east from the right bank of the Tungabhadra at Naddevi to a 

 point some 6 miles south-east of the railway crossing over the Haggari 

 river, where the band passes on into the Anantapur district. This 

 elongated strip of the Dharwar rocks is connected with a large and 

 most irregular-shaped patch of schists and trappoids which extends 

 up the valley of the Tungabhadra as far as Kampli, but the connection 

 is outside of Bellary district by the extension of the band on the left 

 bank of the river. Four small outliers of the same rocks occur also 

 to the east and south of Kampli town. 



Unlike the other bands this section of the Penner-Haggari band is 

 not at all hilly, a peculiarity apparently due to the almost entire ab- 

 sence of haematite quartzites. In the few places, however, where such 

 rocks do occur, the band immediately becomes hilly, as in the cases 

 of the Sindigiri hills, and the small hills near Naddevi, Bailur (Byloor), 

 Kagal (Kuggall), and again in those of the Joladarashi and Chellaguriki 

 (Chelgoorky) ridges east of the Haggari. The only 'other eminences 

 within the band are alow black rocky hill of trappoid half-way between 

 Bellary and the Haggari river, and a couple of low ridges of blotchy 

 trap running in three parallel closely contiguous dykes a couple of 

 miles to the south of the Chellaguriki ridge above named. The further 

 extensions of the bands, however, both in the Raichur Doab and in 

 the Anantapur districts are generally more or less hilly, and frequent- 

 ly very much so ; and this is always coupled with the appearance of 

 hard bands of some kind, the most frequent being haematite quartzites. 



The shape of the patch in the Tungabhadra valley can hardly be 



described, but a glance at the map will imme- 

 The Kampli patch. . , ., T , . , 



diately explain its complexity. The rocks torm- 



ing this Kampli patch consist very largely of trap flows, trappoids, horn- 



blendic and chloritic schists, with here and there a small haematitic bed. 



Intrusive veins of pegmatoid granite are very common. A goodly 



show of these is to be seen in the left bank of the large Yemmiganur 



nullah, 6 miles cast of Kampli town. 



( 148 > 



