238 MR. GARDINER AND PROF. REYNOLDS ON [May 1902, 
B(2). This is a very well-marked rock, and shows ‘numerous 
dark-green fragments embedded in a pale-g -green matrix. For a 
description of it, see p. 262. It is seen in Coosmore, and also 
towards the end of the Head. 
B (3) is a well-marked bed of a red colour, often ashy in character, 
but at times 
Fig. 8.— Weathered surface of coarse ash (B a) si sandy, 
north side of Clogher Head. exactly resem- 
: bling “A(2 
This and the 
underlying bed 
are seen to be 
affected by a 
fault, which 
runs down the 
gully leading 
to Coosmore, 
and has no 
doubt deter- 
mined the form- 
ation of this 
inlet. The 
downthrow is 
about 20 feet 
on the west side 
of the fault- 
line. These 
red beds are 
well seen, form- 
ing the north- 
ern part of the 
extreme point of 
Clogher Head, 
but they have 
yielded no 
fossils. 
BCS iigieea 
tuff, showing fragments of purple and green rhyolite, one of which 
was found to reach a length of 13 feet, although as a rule they are 
very much smaller. (See fig. 8.) “North of the ‘Minnaunmore Rock, 
fragments of granite occur in the tuff. 
B(6) is a very characteristic, purple, banded rhyolite. The 
banding is less marked in the immediate neighbourhood of Clogher 
Head than it is farther east, and is best seen on a weathered 
surface. The rock does not weather readily, and so stands up, 
forming the backbone of the Clogher-Head promontory. Near the 
Dunquin and Ballyferriter road a north-and-south fault cuts across 
the base of the promontory, and the outcrop of the various bands 
is shifted about 120 yards to the south. ‘The rhyolite-band also 
