28 KING : COASTAL REGION OF THE GODAVARI DISTRICT. 



Over these are 30 feet of lighter-coloured (nearly white), purple- 

 blotched ferruginous sandy shales, having 4 or 5 feet of soft white clayey 

 shales at the top. 



On the top of these is a 3 feet band of ferruginous dark-brown 



red yellow and purple sands and clays, with 

 Clay-ironstone band. 



seams of flat oval clay-ironstone concretions 



and irregular segregations having very hard and ferruginous cores, 



which is again succeeded by 10 feet of the soft white clayey shales. 



This clay-ironstone band is fairly persistent throughout the shale 



exposure. 



About 4 feet of softish irregularly vesicular lateritoid clayey sand- 

 stones then succeed the soft white shales, and are in their turn capped 

 by the semi-vitreous gravelly beds of the Tripati group. 



The dip is very low, seldom more than 5° to 8° to the south-east. 



This succession is seen for some distance round the slopes towards 

 Unnamalanka and to the south of Ragavapiiram. South-westwards, in 

 the direction of Komera, the clay-ironstone band is strongly developed, 

 though the whole group is gradually becoming thinner, and the 

 slopes are profusely covered with fragments of the concretions some 

 of which are very large, 3 to 6 feet long. The shell of these is 

 generally of innumerable fine concentric laminae of brown, yellow, 

 red and purple colours, the core being of a brilliant red colour, or, 

 as often, dark purple; many fragments being also seamed with in- 

 filtrations of gypsum. I failed to find any organism in them. The 

 ironstone band is continued to the west-south-westward, beyond the 

 limit of the shale member of the group under the Tripati sandstone of 

 Davanavargildem. 



A further good exposure of this group, though the shales are not now 

 Section below Tripati s0 we ^ developed, occurs in the slopes below the 

 scar P s - scarps of Tripati, which are very much covered 



up by the debris from the sandstones and ironstone band above. The 

 following section is made up from measurements taken not very distant 

 from each other, commencing at a pot-hole in the small nala a short 

 ( 222 ) 



