CHAP. 2.] KARNÜL FORMATION.—PANEUM GROUP. 55 
of a brown colour. In addition to these differences in appearance and 
mode of weathering in one set of the quartzites as compared with the 
other, there is some slight ground for considering them stratigraphically 
as possibly well defined members of a group. The upper may be called 
the pinnacled quartzites and the lower the plateau quartzites. The 
reason for this last appellation will show itself as the rocks themselves 
are treated of. 
The pinnacled quartzites are always the uppermost of the group 
Pinnacled beds and When both members are associated; in no case 
Bore have any other beds been seen above these except 
those of the Khoondairs. They are very compact, and generally in 
massive beds, consisting of coarse sand of a white color, but they weather, 
of a pale brown shade, or are stained, and sometimes coated by the 
decomposition of the ferruginous element in their constitution. In 
drawing the hand across a freshly fractured surface there is seldom 
any sharp resistance, the granular structure being rounded and smooth, 
owing partly perhaps to the vitrified condition of the rock. Occasion- 
ally large rudely spheroidal cavities are to be seen in the lines of lamin- 
ation of this exceedingly hard and compact variety of quartzite, which 
possibly originally contained balls of a more clayey or earthy 
sandstone. The pinnacled quartzites seem to be of purer silicious 
sands as a general rule than all the rest of the other quartzites in the 
KARNUL FORMATION. They also often show less trace of a number of 
beds in their whole thickness, or rather they sometimes seem to be 
one great bed of 20 to 40 feet thick of compact quartzite, so devoid 
of lamination that it seems to have been deposited without any inter- 
mission; only, that other sections continually show with faint, but 
recognizable, lines of parting. On the other hand, an apparently 
very thick bed of these rocks may occur quite distinctly seamed 
with lines of separation other than those seen, for instance, between 
(58) 
