So FOOTE : GEOLOGY OF THE BELLARY DISTRICT. 



slopes of the hill. The low hills south of Yerrabal (Yerrayball), which 

 are not shown in sheet 59, are crested by short and rather ill-defined 

 beds of haematite. They dip under the thick argillites exposed in 

 the Yerrabal nullah banks. Whether these argillites belong to the 

 same series as those north of Nittur and in the Kunchur tank flat is 

 uncertain owing to insufficient sections. 



The summit of the hill south of Hallagilvadi is a not very rich 

 haematite-quartzite, considerably contorted, and 

 the silicious laminae of which, where rather thick, 

 assume a remarkable stalky or " pencilled " structure at right angles 

 to the bedding. The base of the Dharwar rocks at foot of this hill is 

 a rather schisty slightly micaceous quartzite. A similar rock forms 

 the true base of the Dharwars east of Teligi hill, and is overlaid by a 

 considerable thickness of haematitic and chloritic schists. Underlying 

 Kondaji hill conglo- tne g rea t haematite bed which crests the Kondaji 

 merate - hill (see above) is a small exposure of a remark- 



able conglomerate in a micaceous matrix of hard, dense, and very 

 tough character. The included pebbles and small boulders consist of 

 older quartzite and hard schist. One of the boulders measured 

 i'8" by 8" — 9" in its largest and shortest diameter, respectively. The 

 included masses showed signs of having undergone great pres- 

 sure. This is easy to understand, the great Kondaji haematite 

 bed having been upturned till all but vertical. No signs of the 

 c onglomerate could be traced along the eastern base of Tiligi hill. 



To the west of Nilgunda, 11 miles to the north, a great thickness 



of grey and green schists overlies the haematite 



beds which are lost to sight further west under a 



barren plain being covered by an immense amount of debris of blueish 



quartz. 



At Kaddate on the Tungabhadra, dark brown and green schists 

 jut out into the bed of the river and cross it with a dip of 6o° to 

 65 N. W. 



The sections in the bed and banks of the Tungabhadra are most 

 disappointing: they are few and very far between, and of no assistance 



( so > 



