elxxvi Proceedings of the Asiatic Society of Bengal. [N.S., XV, 
(e.g. in Rohra Nala in West Balaghat, Central Provinces, and 
near Srinagar, east of Ajmer). At still other times relatively 
unmetamorphosed Dharwars rest direct on granite, but with- 
out any intervening conglomerate (near Chaibassa). Finally, 
in many cases, both Dharwars and granitic rocks have been so 
severely metamorphosed ie they dip isoclinally, and, as would 
be expected, it is no longer possible to unravel their relation- 
ships (e.g. in the Nagpur- Belaghat plain). 
ut, on looking at the geological map of India, many 
geologists find it difficult to accept 
the idea that the vastly predominating 
gneisses and granites of India have 
intruded themselves into = much smaller shreds and areas of 
Dharwarian rocks. Accepting the view that a portion at least 
of the Dharwar schists was scr deposited as sediments, 
we must admit the previous existence of an earlier solid crust 
or land-surface, not only to provide by denudation the sedi- 
mentary material required for deposition, but also to provide 
Pre-Dharwar gneisses 
re-melted. 
Where is this early crust and the gneisses and granites (with 
perhaps still earlier sediments and lavas) which we may assume 
composed it? We must suppose that during the course of 
tectonic movements, the Dharwar sediments and lavas were 
ten more than once, its age must date from the time of its latest 
enh Thus we see that the “ fundamental gneisses ’ 
se they show intrusive relations towards the Dharwars, 
lust ee regarded as each 1 younger, but nevertheless 
they must, in part, represent the older crust—locally modified 
plain the genera ral absence of the basal conglomerates in the 
Dharwar formation. This hypothesis does not inhibit the local 
preservation of the older gneiss and base of the Dharwars, but it 
is doubtful if such a case of preservation has yet been clearly 
identified. According, therefore, to the ideas now —- 
posit may regard the “fundamenta 
Bric cart oke pecmn c pacer a ae eiss’’ as co mposed in part of 
re-Dharwar gneissic crust re-melted 
itl in part of sah era granites intruded from a lower 
