File:The Quarterly journal of the Geological Society of London (12711963974).jpg

350
PROCEEDINGS OF THE GEOLOGICAL SOCIETY.
flattened summits
orm we see, from
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are the tops of trap-hills, which stretch, in the
our present position to the coast of the Arabian
Sea ; and these massive eminences are
granitic hills which rise up in the manner
that meets our eye, at various distances
from each other, from the place where we
stand to the Bay of Bengal. The inter-
mediate hills and plains, which m front
fill up the foreground, are formed of the
S dolomite and shale of Korhadi, and the
•s sandstone of the basins of the Kanhan
•I and Kolar.
j^"^ I From our elevated station we are thus
enabled to command a prospect of twenty
miles in every direction, and the forma-
tions that we can trace within that range
make up an exact miniature of the geo-
logy of our whole area. Nay, were we
to go down the hill and walk around its
base, in the descent and circuit, which
might all be accomplished in twenty
minutes, we should meet with almost
every rock that is to be found between
Bombay and Kattak.
The geology of our area must at one
time have been extremely simple. Its
principal feature was then sandstone,
associated vdth shale and limestone. But
now other two formations are discovered
on the arena, and these seem on the sur-
face as if they had been two huge ice-
bergs, which approached each other in
frightful collision, crushing the sandstone
between them, and allowing the frag-
ments to slide out at either end, and
scattering them here and there over their
own bulk. Or, to speak in language
more precise, the sandstone formation,
which once occupied the whole space that
we have chosen for description, is now
covered up by trap on the west, and
broken up by granite on the east, leaving
only a small diagonal stripe running
through the centre, which, after being
interrupted at the north-west and south-
east, increases in these directions to a
broad expanse, while a few detached por-
tions, formerly continuous with it, appear
in the body of the trap and granite. It
is the juxtaposition of trap, sandstone.
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