Some specimens
are beautifully banded in onyx-fashion and revetted with 'spar' (quartz)
of many colours, dead-white and crystalline, red and yellow. We find the
same trap on the mainland. Near the smaller Akinim or Salt-pond village
there is a mass threaded with quartz-veins from north to south (1? 30'),
bossed by granite dykes [Footnote: It is generally believed that these
granite injections have been cooled and consolidated deep below earth's
surface.] trending east-west (96? 50'), and traversed by a burnt vein
striking 67?. From the surf-boat we remarked that there were no sharks;
apparently they shun coming within the reefs. Our landing was not pleasant
for the Krumen; the shallow bottom was strewed with rounded pebbles, and
the latter are studded with sharp limpets and corallines. We climbed round
the seaward bluff, fissured with deep narrow clefts, up which the
tide-waves race and roar. Here the trap has a ruddy hue, the salt water
bringing out the iron. Corallines, now several feet above water, clothed
the boulders. This, corroborated by a host of other phenomena, argues a
secular upheaval of the island, and we find the same on the mainland.
There were fragments of grey granite, but not _in situ_; all had been
washed from the continent, where it outlies all other formations.
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