tlPPER GONDWANA SEKIES. 77 



The beds here exposed in various wells are sandy shales and thick- 

 bedded friable buffy sandstones, apparently containing no organic remains. 

 Similar friable sandstones occur (also in well- sections) under lateritic 

 gravel a little to the east and north-east of Karchola (Kartibola) . That 

 these beds and others associated with them extend further eastward 

 under the alluvium is proved by the fact that similar beds, typical sandy 

 shales, and white and mostly mottled clayey shales are penetrated 

 by the deeper wells sunk through the overlying thick cotton soil 

 and lateritic and kankarry beds at Gorizagoluguntapalem and at 

 Ravipadu, lying respectively 2| and 4| miles 



Shales at Ravipadu, &c. 



east-north-east of Kopparu. These sections indicate 



the junction of these beds with similar beds in the two Rajmahal 



inliers of Chebrolu and Tangellamudi, on the western border of the 



Kistna delta. 



Returning to the westward we shall find pale buffy shaly sandstone 

 and sandy shales underlying lateritic gravel at Chinna Kondrapadu, 10 

 miles south-west of Guntiir. 



The next sections of Rajmahal beds to be noticed occur at Guntur 



itself, where coarse, friable, gritty, pebbly sand- 

 Soft grits at Guntur. 



stones are exposed in various well-sections in the 



western part of the town. These gritty beds consist entirely of gneiss 



debris. The best section is afforded by an old unwalled bowrie (square 



Sections at west end wel1 ) close to tne nortn g ate of the compound 

 of t0W11, belonging to the Judge's house. About ] 2 feet of 



friable gritty sandstone of extreme coarseness, locally quite a conglo- 

 merate, and penetrated by large numbers of kankar veins running 

 in various sets, is here seen. One chief set of these kankar veins 

 appears to indicate the true dip of the otherwise unstratified bed. The 

 dip, if it be thus really indicated as supposed, is south-easterly at 

 a low angle. No signs of any organism could be seen. A similar but 

 much deeper and totally inaccessible section is to be seen close by 

 in a large well sunk by Mr. John Rohde, c.s., when Judge of 

 Guntur. 



( 77 ) 



r 



