File:The Quarterly journal of the Geological Society of London (12893596333).jpg

!74
ME. E. E. COWPEE EEED ON THE BED EOCKS .May 1 897,
these beds by the intrusion of any igneous rock. The sandstone is
quite similar in lithological characters to many beds in the un-
doubted Old Red Sandstone around Waterford

and the basal breccia
may be compared with that of Dunmore.
The vertical line of junction of the red beds with the igneous
rocks on the east is obscure, for the adjacent rocks are stained red
by the washing down of the shaly material

small slips also have
taken place which are now grass-grown, and a spring here breaks
out. There is, however, everything to suggest a fault on this side
too, by the position and characters of the igneous rocks seen beyond
this talus and grass.
The next patch is in the large Ballydouane Bay, and is the one
described with more or less minuteness by all the writers on these
red rocks of the coast. Beginning at the western corner of the bay,
west of the road leading down to the beach, we find the low cliffs —
not more than 40 feet high at this point — composed of a curious
banded rock (ophiolite of Kinahan), much resembling serpentine in
appearance, but containing fossils, dipping most distinctly 60° N.N.W.
— that is, into the face of the cliff. On the east, separated from
these banded rocks by
a grass -grown talus Fig. 2.— Ground-plan of foreshore, W. side
slope, a few yards f Bally douane Bay.
wide, we find red and
yellow sandstones with
thin but frequent bands
of fine conglomerate,
made up of white
quartz and other peb-
bles, dipping 30° N.E.
These form the low
cliffs. On the foreshore
we see these sand-
stones ending abruptly
against the serpen -
tinous bedded rocks
along a line of fault
which most clearly
shows the two rocks
in contact (see plan,
fig. 2). Thus the
western boundary of
the red beds of Bally-
douane Bay is a line of fault. An isolated pyramidal mass of the
red sandstones and conglomerates stands in front of the cliffs at this
point, a few yards west of the gap occupied by the stream and
road. This mass shows the beds dipping N.E. at 45°.
There is thus absolutely no evidence here that the red rocks are
interbedded with the neighbouring strata, and I cannot understand
the succession of beds which is tabulated in the Survey Memoir as
occurring on the western side of Ballydouane Bay. Certainly
F.S.
E.S.C.
Fossiliferous banded ' ophiolite,' dipping
N.N.W. at 60°.
Eed sandstones with thin bands of fine
quartz-conglomerates, dipping N.E. at
30 c
F =