CHAP. 3. | KADAPAH FORMATION.—CHEY-AIR BEDS. 205 
bands of slates seen in them are representatives of other thin bands in 
the western scarps.* 
After crossing over the watershed of quartzites north of the 
Balbapully patch of slates, the same strata are immediately found in the 
valley beyond, viz., grey and brown coarse clay-slates, much cleaved and 
breaking up in jointed ridge-shaped masses. They are traceable round 
either side of the widening valley, but are much covered up in the 
middle by superficial deposits. 
The Toonooconda hill-ridge, west of Codoor, soon gives a clear idea 
uen tend oe laine: of the higher strata; for, at the base, or not very 
stones, far above it, the bands of limestone begin to 
come in, and thence northwards they are to be seen very strong over 
the middle of the valley, and dipping down under quartzites of the 
Chittavail ridges. The beds are undulating, but dip, on the whole, at low 
angles to the eastward, the Toonooconda ridge and Wattaloor hill further 
north being in the axes of large shallow synclinals. 
There are lower bands of limestone than those of the bases of these 
NM LT two hill-ridges, but they „are very thin and ap- 
parently more extended further south than Watta- 
loor Conda. It is very difficult to make this out clearly, for the dip of 
the strata, both quartzites and slates, is so low to the west of Wattaloor, 
and the country up to the bases of the quartzite-formed sides of the basin 
is so flat and so covered up with superficial deposits, that it is impossible 
to trace the limestone-outcrops, if they ever existed, further south 
with any continuity. At first sight, the lower outcrops of limestone 
do not appear to run parallel: with the quartzite edges, but seem, if 
they could be followed out, as though they were striking southwards 
into the gentle slope of the western hills. On this view there seems 
. * [t requires close examination to make out the lie of the beds here; both Mr. Charles 
Æ. Oldham and I were for a long time under the impression that the slates of the Balba- 
pully valley dipped under the quartzites of the Yellaconda.—W. K. 
۱ ( 205 ( 
