7 
304: KING: KADAPAH AND KARNUL FORMATIONS. 
plateau, but with several small beds of slate intercalated between the 
several silicious beds. 
To the northward these slates thin out rapidly, but to the south and 
south-west they swell out and become important beds. The gritty 
quartzites form, where crossed by the section, a well marked ridge which 
slopes down slowly towards the north till it reaches the Taduvayi nullah. 
In this position the entire surface of the gritty parts is honeycombed with 
innumerable old diamond pits. Following the section further eastward an 
undulating plain covered with jungle stretches away for upwards of two 
miles. Nothing is seen here but pale chocolate, drab, buff and white 
slates, much obscured by quartz-debris derived from the very numerous 
little veins and films of quartz which abound in the slates. Some of 
these slates certainly represent the bed h. 
As the bank of the Kistnah is approached a fault brings in the slate 
beds (a), the limestones (7!) and quartzite (No. 2), in the very same way 
as in Section I: indeed the two sections cross each other at this spot. 
The small patch of these three beds which appears on the east side of 
the faulted intrusion of gneiss in the bank of the Kistnah (visible only 
when the water is low) is not seen along the line of Section No. IT; but on 
the east (here the left) bank of the Kistnah the village of Goodimetta 
stands on the slate bed 4; while the Juggiapett bed of quartzite 
No. 1 forms a ridge running from the summit of Oostapully hill for 
several miles northward to Cautranepully, where the beds trend eastward 
and southward to form the two bays north-west of Peddavaram. 
Following the section eastward from Goodimetta the granitoid 
gneiss is exposed for about a mile, and then another outcrop of bed Wo. 1 
follows. This time the quartzite dips eastward, and is suddenly cut off 
by a line of fault by which the gneiss is again brought to the surface or 
rather the quartzite dropped down. To the southward the quartzites 
run down to the Oostapully hill, where they trend round eastward and 
finally northward ; northward of the section the beds trend north-north- 
(BUM) 
