File:The Quarterly journal of the Geological Society of London (13368945333).jpg

1873..
JUDD THE SECONDARY KOCKS OP SCOTLAND.
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• Trans. Geol. Soc. 2nd
  

p. 354, &c.
covered with slipped masses and vege-
tation ; but it is evident that the con-
tinuity of the sandstones is completely
broken up, and that the rocks are in
the condition so frequently observed at
their contact with the Palaeozoic strata,
and which is well illustrated by the
sketch (fig. 3) of the rocks seen in Allt-
Chollie (Colyburn) four miles to the
north of Clyne Kirk. At this place the
harder beds of the Jurassic sandstones
are seen, for a distance of about 100
yards from their junction with the Pa-
laeozoic rocks, to be broken up into
fragments of various sizes, which lie in
every possible position in the midst of
a mass of debris formed by the crush-
ing of the softer beds. This appearance
was well described by Sir Roderick
Murchison at this and several other
points*. Returning to the ravine at
Clyne Kirk, we find that at some little
distance from the junction with the
Silurian the beds of sandstone (b) and
of black argillaceous sand (c) are ca-
pable of being traced, and are seen
to be bent into sharp folds accom-
panied by slight dislocations. The
disturbance of the Jurassic beds di-
minishes as we remove further from
their junction with the Palaeozoic
rocks.
Between Clyne Kirk and Braam-
berry Hill the Secondary strata are
concealed ; but they probably lie in a
series of long curves, in some cases
broken across by faults, as illustrated
by the section (fig. 4, which is drawn
to scale) exposed in a bluff on the north
side of the river Brora, where the rocks
consist of marine sandy clays of Middle
Oxfordian age. At Braamberry Hill
the sandstone strata, which overlie the
clays just mentioned, form an anti-
clinal, the rocks of which, owing to
their superior hardness, resisted denu-
dation ; and thence to Brora, as seen
in the gorge of the river, the strata