56 KING : KADAPAH AND KARNÜL FORMATIONS. [PART II. 
The thickness of this group is not very great, and it is not very 
-One hundred feet of Variable, only thinning out towards its edges; 
Paneums. but each of the members varies much in places, 
as one overlaps the other, the two together still keeping up the average 
thiekness of the group; in this way each is often quite thick enough 
to represent the whole, by merely its own depth, one or other being 
altogether absent. One hundred feet appears to be about the thickness 
of the whole Panewm group, though generally the combined thickness 
of both members falls within this. The Oopalpád plateau is the region 
of the finest display of both members together, or of either singly ; 
and the average thickness of the pinnacled beds was 50 feet, while the 
plateau beds were only 30 feet. 
The sub-division of this eroup is really more a matter of convenience 
ur ی ی ما‎ than anything else, for the pinnacled and plateau 
pope EU into two — beds all seem to be part of one shallow deposit, which 
was formed over a wide and flat basin, though the 
lower beds were not of sufficient extent to cover the bottom of the basin, 
and the upper beds have stretched well beyond the thinning-out edge 
of the plateau beds in some parts of the area, or, in other words, have 
overlapped them. There is likewise some evidence that the pinnacled 
beds did not ever cover the lower ones in other parts of the field, as 
in the south about the Oopalpád plateau, where they are evidently thin- 
ning out rapidly over the plateau-beds, which stretch far beyond to the 
south and south-east in the peculiar flat-topped hills which give the name 
to this member of the group. It is true, however, that this evidence is 
very incomplete, for there is no proof here that the proper thickness of 
the pinnacled beds is at all represented, owing to the subsequent denu- 
dation. "There is one case, close to the village of Kypaw, a couple of 
miles east of Banaganpilly, which seems to show pretty clearly that the 
lower beds have thinned out here under the Koilkoontla limestones 
without being accompanied by the pinnacled beds: for we have only 
( 56 ) 
