M " 
CHAP. 2.] KARNUL FORMATION.—PANEUM GROUP. 65 
must have sunk down into the plains (if they were still continuous for any 
distance eastward,) would be likely to appear south of Cherlopully tank, 
considering that the country to the south is a great plain mostly covered 
with cotton soil, and therefore very unlikely to give any outcrop of 
rocks. The beds of quartzite up to Cherlopully tank are rather 
obscure, but still they show evident signs of thinning out, and when, 
after traversing the country many times, the Kypaw section was found, - 
this became quite evident. Here the Paneum group has dwindled down 
to a ten-feet band of sandy shales apparently shading down to the 
white shales next to be described, over which is a six to eight-inch 
bed of sandstone quartzite. There are limestones immediately above, 
and the shales below soon change into calcareous flags. Here the 
pinnacled beds have completely disappeared or died out. Southwards 
of this pomt there was no more evidence of this group of quartzites, 
though it is quite possible that it exists, for the country is almost totally 
obscured by soils. 
۱ 
The PanEvumMs also die out to the north some distance beyond the 
Oondootla plateau, but before doing so they 
“Wall of quartzites. 1 
sink down from the Oondootla flanks below the 
limestone plains, by a sharp curve which Mr. Foote has called the 
quartzite * wall, and to which he refers as follows :— 
“The most interesting and remarkable feature in the position of the quartzites 
is the singularly long and narrow wall joining the north end of 
the Oondootla plateau with that of Chintalpilly. This narrow 
wall of rock owes its existence to the action of the two opposite forces of upheaval and 
denudation. By the first a large area was elevated, forming the whole of what has 
been described as the Oondootla and Chintalpilly plateau and the intervening space, 
the northern and central parts of the elevated region, was removed by the denuding force, 
thus disclosing a considerable tract of the underlying rocks which chiefly belong to 
the older or lower series of the newer metamorphic rocks, the KADAPAH ROCKs. This 
remarkable wall of quartzite corresponds with a line of fault, but there has been appa- 
rently little or no dislocation of the strata on either side of the fracture. The action of 
the denuding forces, however, has been unequal, and the various outliers of pinnacled 
Mr. Foote’s notes. 
quartzite and the underlying strata, limestones and diamond-quartzites, render the 
1 | (10091) 
