CHAP. 5.] KADAPAH FORMATION.—CHEY-AIR BEDS. 177 
The Naggery quartzites occur as the capping and summit peak of 
A ۱ this hill. Thence northwards they are seen in 
Southern outliers of 
EH the Narnaveram and Calastry outlying ranges 
of hills, and beyond this again they form the hills of Tripetty, and 
so extend right up to near Cuddapah as the western edge of the country 
under description. 
In the Nullamullays they seem to be represented 
Eeshwarnacoopum 
mountain. by the rocks of the main mass of the Eeshwarna- 
coopum. 
The Yellaconda or eastern gháts are fringed at rare intervals by a 
few outlying hil ridges, three of which are 
Eastern outliers. 
capped by  quartzites, which may possibly be 
representatives of these Naggery beds, though it is quite impossible to 
recognise any particular resemblance between the one and the other 
more than between these and any other group of quartzites and slates 
in the KADAPAH formation.* 
This sub-group is thickest at the southern end: giving grand 
RAS scarped cliffs in the outlying Narnaveram hills, &e., 
thickest at southern end. and those of Tripetty, of about 900 feet in height. 
The greatest thickness down here must be from 1,000 to 1,500 feet. If 
the Eeshwarnacoopum beds be really representatives of the Naggerys, 
the greatest thickness 1s far beyond this. 
From Naggery to Cuddapah, there is a gradual decrease in thick- 
ness, until underneath the slates with limestone of Polleonda, there are 
only some 600 to 800 feet. 
The series throughout is made up of altered sands, grits, and 
Character and details  COnglomerates, in thick and thin beds, with flags 
of Naggery beds. and occasional thin bands of slates or slaty shales. 
With such a long outerop of these strata as there is along the 
* Mr. Foote considers the Byrawadi beds as belonging to the Byrencondas. 
Y (M e) 
