CHAP. 4.) KADAPAH FORMATION.—NULLAMULLAY BEDS. 215 
Conda is much increased in the ridges to the south, where the great 
quartzite beds have been perfectly jammed up together; while there are 
considerable remnants of the superincumbent slates still left in the 
synclinal flexures. 
In the Atchamapett hill, between Kaukul Conda and the east-west 
range to the westward, some very good examples of folding and slight 
inversion of the beds are to be seen. One case may be easily recognized 
from the north-west line of railway by any traveller in the train:— 
A very fine scarp of curved beds shows on the western face of the 
hill; and these may be seen in the little upland valley behind to be 
partially inverted before they roll over again and slope down eastwards 
to Conarazpolliam. 
In the hill ridges south of the Chey-air, the lowest beds of these 
ET quartzites overlie slates with strong limestone 
of dus Chey alr bands; but they do so in a very peculiar way. 
Along the main ridge, they are generally lying directly on limestones, 
which, for some long distances, appear to be quite conformable with the 
beds above, and in this position are earthy and shaly; but at intervals 
these calcareous beds become strong, massive, and hard silicious beds, and 
they then form flat humps over which the lowest quartzite sands and 
thin sandy shales undulate, as though these irregular humps had 
existed previously to the deposition of the quartzites. 
At times, as on the eastern side of the village of Poly, the thin 
flaggy quartzites with sandy shales are lying 
Ee A ds directly on hard massive irregularly bedded lime- 
stone, which certainly seems to have been denuded before the sandstones 
were deposited. On the other hand, there are long outcrops of earthy 
limestone beds connecting the more silicious and splintery humps, and 
these, instead of being immediately subjacent to quartzites, are often 
overlaid by good thicknesses of shales and slaty shales, which are in their 
turn capped by quartzites apparently quite conformably. 
