144 FOOTE : GEOLOGY OF THE BELLARY DISTRICT. 



As already pointed out, the great features of the mountain are 



the scarps formed by the great haematite bands which here crest 



the main ridge, and of which the two southernmost and the most 



northerly form the crests respectively of the two great easterly 



spurs. The deep bay which has been eroded between these 



spurs appears to owe much of its size and importance to the stopping 



out of the summit bed a little to the eastward of the summit. The 



east side is very deeply eroded, and the spurs after running one 



mile or so to the south-eastward sink down into the Halakundi pass 



through which the Bellary- Bangalore high road runs. 



The pass separates the main range from the eastern part of the 



synclinal, which is known as the Mincheri hills, 

 Halakundi pass. . ' . 



lhe pass is divided into two narrow valleys 



by a low ridge which lies in the middle, and on the back of which are. 

 exposed numerous outcrops of beds which are hidden by thick super- 

 ficial deposits in the two adjoining valleys. The section here dis- 

 played is unfortunately not perfect, as owing to superficial deposits 

 several considerable gaps occur in which no rock at all is seen. Starting 

 southward from the bridge south of Halakundi village, the following 

 series is to be seen in ascending order as far as No. 7, then in de- 

 scending order :-^ 



13. Haematite quartzite, very poor, coarsegrained. 



Gap of about 20 yards. 

 12. Haematite quartzite, very thick. 

 II. Micaceous beds, dirty green. 

 10. Hornblendic trappoid. 



9. Gneissoid, dark, greenish brown. 



8. Hornblendic schist. 



7. Trapflow, dioritic. 



6. Haematite quartzite, varying from rich to very poor in iron. 



5. Siliceous gritty schist, blue grey. 



4. Trappoid dark " birdseye." 



3. Hornblende schists, greenish black. 



2. Trappoid dense, black. Gap of 200 yards. 



1. Hornblende schist, very siliceous. 

 Gap of 50 yards. 

 Gneiss, pink felsitic. 



The haematite quartzite No. 6 is the continuation of the great bed 

 ( 144 ) 



