I30 FOOTE. GEOLOGY OF THE BELLARY DISTRICT. 



The dip of the lower beds on the northern slope varies from 65 to 70 

 southward. The haematites appear to be only local, and to thin 

 out both to the west and east. 



The eastern extension of the schist beds in the low tract between 

 the hills and Bassuapur (Bussuapoor) is very greatly obscured by a 

 thick cotton soil spread. 



To the south-east of the Joga hills, a little to east of the junction 



of the Joga nullah with the Narihalla, is an ex- 

 Limestone near Tallur. 



posure of schists with a few small beds of creamy 



white or grey crystalline limestone. The schists may be traced east- 

 ward across the Narihalla a little north of Naglapur, where they in- 

 clude a small bed of haematite quartzite. 



The relations of these schistose rocks to the surrounding trapflows 

 are much obscured by thick cotton soil, and it is not quite certain 

 whether they are to be considered as an inlier of the Joga series 

 exposed by denudation of the traps locally, or as a small separate 

 series intercalated between two great trapflows, I am inclined to 

 adopt the latter view provisionally. 



The country all around this little schist exposure is formed of trap 



which is seen in countless little outcrops and numerous shallow sections 



in different stream beds, but there is nowhere a good deep section in 



which to study the peculiarities of the rock. Westward of the Narihalla 



it extends right up to the foot of the Sandur synclinal and dips under 



the lowest haematites there seen. South-eastward of the Narihalla the 



trapflows disappear for a short distance, and there is a show of schists 



which stretches away south-eastward up the 

 Lingadahalli schists. ..... 



valley or the Lingadahalli nullah to the boundary 



of the gneissic area against which they are faulted. The trapflow 



re-appears to the north of the schist band and rises into rounded hills 



which stretch away to the south-east. 



The relation of these schists, to the trapflows around, is by no 



means clear. The schists along their southern side appear to overlie 



the " Joga" trapflow, which is continuous under the great Ettinahallj 



haematite bed, but they show no haematites worth mentioning and 



( ijo ) 



