CHAP. 4.] KARNÜL FORMATION.—BANAGANPILLY GROUP. 91 
mudgoo limestones. Hast of Sultanpoor the ground is thickly strewed with chert and 
jasper pebbles weathered out of the conglomerate beds.” 
“The continuity of these pebble beds is not great, for they thin out rapidly and 
in several places die away entirely, so that the Jwmmulmudgoo limestone reposes 
directly on the syenitic rocks, as at Shaitancotta and other places both north and 
south of the Kistnah.” 
* On the left bank of the Toongabudra, the relation of the representatives of the 
JBanagampilly quartzites and the overlying limestone is traceable at intervals for 
several miles north of Bhyrawunpully. They are here represented by a bed of coarse 
grit, a few feet thick, tilted up generally ata high angle against the syenitic rocks, and 
dipping westward. For some little distance south of the village, the line of outcrop 
is coincident with the left bank of the river, but near Bhyrawunpully Pagoda the 
boundary trends north away from the river—and afew yards further on a very in- 
structive little section is to be seen where a nullah crosses the road from Alumpoor.” 
* Further north still, the quartzite has either died out or is denuded away at the 
outcrop; at any rate it does not appear between the limestone and syenite.” 
* North of the Kistnah, pebbly quartzites holding the same relation to the Jummul- 
mudgoo limestone occur in several places, and there are no reasons for considering 
these of different age from the diamond-bearing quartzites of the south. A very in- 
teresting development of the formation is to be met with at Yemkulloo on the banks 
of the Kistnah about 23 miles east-north-east of Mooraconda."* 
* Between the village, which is close to the river bank, and the foot of the hill to 
the north, a thin bed of quartzite is seen dipping under the 
Jummulmudgoo limestone at an angle of 40?— 50? south- 
ward. About one-half of a mile east of the village the quartzite is replaced by a very 
pebbly bed, the outcrop of which forms a low narrow ridgey sloping gradually away to 
the east where it is lost sight of in the alluvium of the river; but it has evidently died 
out, the limestones being seen to rest directly on the metamorphie rocks exposed in the 
bed of the Kistnah when the river is low." 
“This bed of pebbly quartzite was formerly continuous with the beds capping the . 
narrow flat-topped ridge north ofthe village ; but the continuity has been broken through 
by denuding forces assisted probably by the rending action of the movement by which 
the underlying syenitic rocks were upheaved, and these pebble beds raised to an eleva- 
tion greatly above that occupied by their representatives underlying the limestone 
formations of the Bowanassy river valley." 
Doubtful beds. 
“This south side of the main ridge shows very distinctly the position occupied by 
the pebble beds which were deposited in a hollow of the old granitic basin. The 
lowest bed resting on the granite is the coarsest, and contains many large pebbles of 
* The beds described by Mr. Foote in the {following paras. are, I am very much inclined to think, of 
the KADAPAHS.—W. K. 
+ The quartzites of this ridge are continuous with KADAPAH strata to the east, —W. K. 
UL y 
