216 KING: KADAPAH AND KARNUL FORMATIONS. [PART III. 
The true state of affairs seems to be that the lowest beds of this 
quartzite sub-group are often thin shales, slaty shales, and sandy shales, 
which were first deposited in the denuded hollows of the Poolumpett 
slates. In this part of the field there is much folding in their ridges, 
and this may have frequently tended to exaggerate the thickness of 
shales, &e., between the sandstone strata and the limestone series: 
or, in other words, the shales would, in many cases, be crushed up into 
pockets im the sharp anticlinals and synclinals, and according as the 
rocks were denuded, the quartzite might be found at one time almost, 
if not immediately, 1n contact with limestones, and at another separated 
from them by a good thickness of shales. 
The squeezed-up arrangement of the quartzites with superin- 
cumbent and subjacent slates, &c., is very well 
Squeezed-up strata. 1 ۱ 
seen in the broader belt of hill ridges between 
Poolumpett and Chittavail. There must also have been some faulting 
in a generally north and south direction, but the lines of fracture could 
not be traced out in the low country owing to the superficial covering 
of soil. In fact, except there had been fracture, it seems impossible to 
account for the abnormal position of the quartzites at the southern extre- 
mity of this series of ridges as they tail southwards towards Codoor, 
. where they gradually appear to be intercalated with the slate of the Codoor 
country; while further north they are undoubtedly overlying them. 
The further southerly extension of these quartzites into the Yella- 
condas about Venkatigherry Droog is not at all 
Southern extremity of ne ; i 
the series obscured by clear; or rather it is quite evident that they must 
RARUS strike into the range under the great set of slates 
of Nagwaram Conda; but it is as yet utterly impossible to recognize 
the sub-group with any certainty. There must likewise have been a 
sharp turn round in the strike to the eastward, as Konayon Conda 
appears to have been the nucleus of a great dome of the KADAPAH 
rocks, analogous to those north-north-east of Cumbum. 
Gane.) 
