The solid strata are every where exposed either
in the cliff or on the shore; we were therefore certain of meeting with
the junction in going from Dunglass to Fast Castle, which is upon the
schistus. But this journey can only be made by sea; and we first set out
to examine the junction in the Tour and Pease burns, where we had been
informed it was to be found.
In the bottom of those rivulets the sand-stone and marly strata appear
pretty much inclined, rising towards the schistus country. The two burns
unite before they come to the shore; and it is about midway between this
junction and the bridges which are thrown over those two hollows, that
the junction is to be found.
The schistus strata here approach towards vertical; and the sand-stone
strata are greatly inclined. But this inclination of those two different
strata are in opposite directions; neither does the horizontal section
of those two different strata run parallel to the junction; that is to
say, the intersection of those two different strata is a line inclined
to the horizon.
At Jedburgh the schistus was vertical, and the strata horizontal; and
there was interposed a compound bed of pudding-stone, formed of various
water-worn bodies, the gravel of the schistus strata, and porphyries.
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