Having taken boat at Dunglass burn, we set out to explore the coast;
and, we observed the horizontal sand-stone turn up near the Pease burn,
lifting towards the schistus. We found the junction of that schistus
with the red sand-stone and marly strata on the shore and sea bank, at
St. Helens, corresponding in general with what we had observed in the
burns to the westward. But, at Siccar Point, we found a beautiful
picture of this junction washed bare by the sea. The sand-stone strata
are partly washed away, and partly remaining upon the ends of the
vertical schistus; and, in many places, points of the schistus strata
are seen standing up through among the sand-stone, the greatest part of
which is worn away. Behind this again we have a natural section of those
sand-stone strata, containing fragments of the schistus.
After this nothing appears but the schistus rocks, until sand-stone and
marl again are found at Red-heugh above the vertical strata. From that
bay to Fast Castle we had nothing to observe but the schistus, which is
continued without interruption to St Abb's Head.
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