APPENDIX. all 
up of quartzite, but mixed also with fragments of hard slate and of 
gneiss. This has been, near to the now abandoned village of Sura- 
varamkottapeta, turned over for diamonds; a great number of pits and 
heaps being visible in the jungle. "The quantity of this gravel and of 
talus along the foot of the ridges in other parts of the Venkatayapalem 
valley is so great that the position of the lines of fault could be only 
approximately ascertained, but nowhere actually seen. 
The Chintapilly ridge where crossed by the section line proves to 
be a tilted anticlinal fold, the tilting being towards the east, and so 
great that, while the beds on the west side of the ridge have an easy 
slope of about 25° to 30°, on the east they are bent round sharply to 
dip vertically in some places and at extremely high angles elsewhere 
along the ridge. South of the line of section, about opposite the 
village of Nindujarla, the east side of the anticlinal appears no longer, 
owing to the greater amount of denudation; and with the exception 
of a small fault west of Nindujarla the boundary is formed by a 
simple basset edge with westerly dip. Crossing the line of fault at 
foot of the Chintapil ridge, whereby the gneiss is made to abut 
against the vertieal beds of quartzite, a valley nearly a mile wide is 
reached, on the east side of which another line of fracture has occurred, 
and beds of quartzite appear to be dipping under the gneiss. These 
beds form a broad flat dome rising from a rudely five-sided base. The 
dip of the quartzites is to a certain extent quaquaversal; but the 
dome is imperfect, having a slight degree of ellipticity, the major axis 
of the ellipse making apparently a slight bend to the east; the average 
dip all round is from 30° to 40°, perhaps a little higher on the west 
side. The rock is a series of quartzite beds of unascertained thickness; 
generally waxy in texture and of drab or whitish pink or grey colors. 
It strongly resembles the quartzite of the ridge just described, and 
both may with good reason be considered as representing the Juggiapett 
bed (No. 1). 
COM) 
