IIJ FOOTE : GEOLOGY OF THE BELLARY DISTRICT. 



haematite bed which forms the summit seems to be due to a very 

 strong but purely local inversion, quite distinct from the much more 

 important inversion seen in the Bhimagandi gorge. 



The eastern side of the hill is a sloping plateau of haematite quartzite, 

 which is a broadened outcrop of a large bed of that rock, that is, in all 

 probability the continuation of the great bed that underlies the Timma- 

 pangarh Drug just described. The surface thus forming the eastern 

 slope of the hill is really the under-surface of the great haematite bed 

 that has been overturned by the local inversion above referred to. If 

 I am right in my interpretation of the courses of the great haematite 

 beds seen at Timappangarh, which are by no means distinct in the 

 western limit of the great curve they there make, this Hunshahuti 

 summit-bed represents the great bed out of which the Bhimtirth recess 

 has been excavated. The bed, as seen on the summit of Hunshahuti hill, 

 is also much contorted on a small scale, too much so to make its east 

 ward-dip measurable with any accuracy, but it is probably about 40 

 or rather less, which shows that the inversion was there a very 

 strongly marked one, amounting almost to a thrust plane. 



This slope is the largest superficial exposure of the haematite quart- 

 zite that does not occur in an inaccessible scarp or actual cliff. It is 

 both over and under-laid by contemporaneous trapflows. It is not 

 easy to understand why there should be so great an inversion here, 

 for the overlying beds and lateral extensions of the same bed do not 

 show such complete overturning. 



C. — The Donimale or South-Eastern Division. 

 This is the smallest of the four divisions of the Sandur synclinal, 

 but not the least interesting, and it contains a great deal of beautiful 

 scenery in its northern, central and eastern parts, as well as several 

 very puzzling sections, of which I can at present only offer tentative 

 solutions. It is named after the plateau forming its north-western 

 extremity. The Donimale proper is in plan wedge-shaped, the base 

 of the wedge abutting on the Bhimagandi gorge, and the apex lying 

 ( 112 ) 



