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1856.. BINNEY PERMIAN ROCKS OF SCOTLAND.
Fig. 1 . — Section near Ballochmoyle Bridge,
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a. Red-coloured sandstone, false-bedded ; 60 to 70 feet.
5. Red sandstone.
c. Breccia ; 30 feet.
Further up the river, a mass of amygdaloidal trap cuts off the
breccia-beds on their rise, and thus prevents their lower portions
from being seen ; but about half a mile further up the stream towards
Catrine, red marls and red and purplish sandstones, of great thick-
ness, make their appearance, dipping slightly to the west. In some
of the latter there are slight traces of fossil plants and beds of ripple-
marked sandstones.
Fig. 2. — Section from the Glasgow and South-western Railway to
beyond Catrine.
Railway.
Ballochmoyle
Bridge.
Lindsay
Bank.
V
a. Red sandstone.
b. Breccia, dipping W. at an angle of 8°.
e. Dyke of amygdaloidal trap ; running N.W. — S.E.
d. Red, purple, and variegated marls and sandstone ; dipping W.
The breccia near Ballochmoyle Bridge dips due west at an angle of
8°. Some of the pieces of trap are rounded and others quite angular.
The beds are divided by thin veins of sparry matter. The cementing
paste has much the appearance of felspathic ash. After the trap-
dyke is passed, and its breadth must be near a third of a mile, the
sandstones and marls of Catrine Cliff occur. They dip very slightly
to the west. As you pass through Catrine to Lindsay Bank you
come to a great thickness of red and variegated marls and sandstones,
some of the latter being ripple-marked flags, which near Lindsay
Bank dip due west at an angle of 30°. I did not go up the river so
far as Sorn ; but, from the large fragments of breccia seen in the
Water of Ayr, in the river above Lindsay Bank, I suspect that the
Ballochmoyle Bridge deposit may again occur further up the river.