CHAP. 3.| KADAPAH -FORMATION.—CHEY-AIR BEDS. 191 
Condapoor range of the hills for from 20 to 30 feet in thickness. 
South-south-west of the village of Anantapoor, in the wider valley at 
the foot of the hills, there is a fine display of these limestones as they 
rest on a great flow of trap from 80 to 100 feet thick. The limestones 
appear to he in regular succession in this flow of trap. They are of pale 
blueish-grey color, with well marked. interlaminations of fine compact 
silicio-felspathic matter; these interlaminations becoming more numer- 
ous as the outcrop of the beds is ascended, until the calcareous element 
has ceased altogether. With the silicious interlaminations are also 
others of a green color, softer, and finely crystalline, with seams of a 
white zeolite im minute radiating fibrous botryoidal crystallizations. 
This set of limestones 1s immediately underlaid by greenstone, appa- 
rently quite conformably. As the calcareous element ceases in fol- 
lowing the beds upwards, the beds are overlaid by about 50 feet of 
reddish-brown claystone beds, in which are also intercalations of 
the pale green crystalline rock with small botryoidal assemblages 
of zeolite: when over all comes a great thickness of very fine- 
grained and compact felspathic sandstone of grey and dark-green 
colors. 
This band of limestones is very persistent, with very much the 
characters, for many miles to the north and south from the same 
Chittravutty outcrop; though it is largely covered up to the north 
after reaching the Penn-air river, a few miles west of Talapodatoor, 
until it again shows very strongly in the next decided outcrop of the 
same traps east of Yadakee, and below the south side of the 
Oopalpad plateau. 
So far, the rocks of this group are ordinary aqueous deposits, with 
Silicio-felspathie bands, the exception of the flaky shales just described. 
or felsites. — There is, however, yet another variety of stratified 
rock, which is even more difficult to account for, except through volcanic 
agencies, than the mottled and flaky shales. 
( 398.) 
