80 foote: geological structure of the eastern coast. 



The quartzite beds in the Ubiahpolliam hill form likewise an 



„ . , ... , .„ . anticlinal ellipse ; they are overlaid conformably 

 Ubiahpolliam hill quart- ... 



zites. by hornblendic schists. No connection could be 



traced between these and the Chendalur quartzites; and, unless the 

 respective positions of the two sets has been affected by faults hidden by 

 the intervening thick spread of red soil, the Ubiahpolliam beds underlie 

 the others at a considerable depth. 



The predominantly micaceous character of the schists noted to the 



, . southward of the Musi-eru is no£ continued north 

 Change of character ot 



rocks. of that river : numerous hornblendic beds now 



come in, and by the time the Gundlakamma valley is reached, to the 

 south of Vinukondas, the two varieties seem to be equally common. 

 Northward of the Gundlakamma river the schistose band widens greatly, 

 and makes a trend to the north-east, thereby maintaining a general 

 degree of parallelism with the boundary of the Kadapa rocks. To the 

 north and east of Narsaraopett (Atlur Narasaraopetta) the continu- 

 ation of the schistose band is greatly obscured by the extensive and 

 unbroken spreads of cotton soil which cover the face of the country 

 generally; and ere it reaches the banks of the Kistna to the west 

 of Amravati, it has diminished to a strip of only a couple of miles in 

 width. 



Two occurrences of gneiss containing epidote in the form of pistacite 



were noticed near Narasaropett ; the one at 



Pamidipadu, 4 or 5 miles north of the town, the 



other at Ravipadu, 3 miles to the north-west. Epidote is but rarely 



found in this region, though by no means an uncommon mineral in more 



southerly parts, in South Arcot for example. 



Only one bed of magnetic iron was observed in the western schistose 

 band; it occurs at Yerraguntlapadu, 4> miles 



Magnetic bed. . . 



south-east of Sattenapalle. Very little is seen or 

 the bed, which crops out a little to the north-west of the village, and 

 is by no means a rich one, 

 ( 30 ) 



