238 KING: KADAPAH AND KARNUL FORMATIONS. [PART III. 
the two outcrops of a synclinal fold which meet together at a very acute angle at a 
point somewhat to the east or south-east of Shingarypully ; but that part of the 
valley is extremely obscured by the quartzite-shingle and extensive jungle. 
“ Still further south, between the ruined and abandoned village of Gollapully and 
Shingasanpully, the Cumbum slates are completely obscured by debris, which is of 
great thickness. In the valley running up into the hills south-south-west from Kona- 
pully* slates are seen at several points in such positions that it is hard to understand 
to what group they belong, unless it be the Cumbum group. My examination of the 
group of mountain-ridges south of Konapully led me to believe that the slates of this 
valley are a continuation of the slate beds which overlie the quartzite forming the 
ridge west of Konapully; and these quartzites I consider as being unquestionably the 
same as the beds forming the Unkalummaconda, which rise from below the typical 
Cumbum slates all along the west side of the Yamal-air valley. 
“Whether the Cumbum slates are continued southward down the Hanoomypully 
valley to join the great area of Cumbum slates in the Porenaumla valley is some- 
what uncertain; the small valley south of Hanoomypully being full of quartzite 
debris and shingle which completely obscure the underlying rock. It is very likely 
that-at the highest part of the valley where the watershed is situated, the slates might 
be found to have been entirely denuded away; but at both ends, at Hanoomypully 
and a mile to the north-east of Chintalpully, the Cumbum slates are exposed in well- 
sections. 
“Both above and below the Yanegayconda ridge quartzite-bed are several beds of 
crystalline limestone,t almost the only ones met with in this part of Kurnool dis- 
trict. They are of no great importance, being generally small or so much mixed up 
with slate laminz as to be of no value as building stones, or for ornamental purposes. 
These beds occur chiefly in the Yamal-air valley, south of the village of Mullapoor. 
South of that place are several beds of bluish or whitish-grey, or pale dirty pink 
crystalline limestone, intermixed with pale grey slates, and overlain by pale bluish, 
greenish, and grey taleose slates. "The limestone beds, which are upturned at an angle 
of 70°-75° east, form a synclinal fold about half a mile across, the intermediate space 
being occupied by the slates just mentioned. The dip on the eastern side of the trough 
is 50°-60° west. 
“The synclinal fold is most probably a complete one as shown in the section above 
quoted, and nota simple fold with a constant dip of 75°, which would demand for 
the Cumbum slate group a vastly greater thickness than there is any reason to 
* This valley is only indicated on the map at its north and south extremities, but it forms a great north 
and south furrow in the mountains running from Konapully down to Mylecherla. 
+ These are what I have called sub-erystalline limestone bands in the Porenaumla valley; there 
they are not properly crystalline limestone; and probably Mr. Foote’s bands are hardly so crystalline as. 
his term would indicate.—W. K. 
( 238 ) 
