128 JOURNAL OF THE GEOLOGICAL SOCIETY OF DUBLIN. 
ghi , than the present line from a to/. Then the fossiliferous band at 
d, represented by the white space pmno, was continuous; afterwards 
a fault on the line hie took place, and the portion between g and h 
slipped down to the position abc , and that part of the band between 
m and n was thrown down to &, and now makes, apparently, another 
band. Subsequently greenstone was protruded into the line of 
fault, between c and 7c , and that part of the surface between h and i 
was worn down by denudation to the present surface cdef. 
Again, at Kinard, three miles S. E. of Dingle, the brown grits, 
and purple slates, at Coosathurrig, on the shore, contain Silurian 
fossils; the dip of the beds being S. 70° to 80°. This brown- 
stone is surmounted, on the hill of Kinard, unconformably by a 
cap of Old Red Sandstone; the beds, on an average, lying nearly 
level, as stated before. This patch is of an oval form, a mile and a 
quarter long, in a N. E. direction, by a quarter of a mile wide. 
This locality affords a striking proof that the brownstone and the 
Old Red Sandstone are of two different formations, for I consider 
that the manifest uncon formability of the beds of the two groups 
points out the true line of demarcation between the two systems, 
although both appear like Red Sandstone,—differing, however, in 
this circumstance, that the lower, besides the Silurian fossils, is 
more brownish, and very hard; the upper, more red and soft. 
Pebbles of white vein quartz are frequently seen in the brown- 
stone, along the coast, between the mouth of Dingle Harbour and 
Bull’s Head; even in the vicinity of the Silurian fossiliferous band, 
and in the same group of strata, white quartz pebbles are also got 
occasionally in the green grits hereabouts—a circumstance worthy 
of noting, because it has been thought that those white pebbles are 
peculiar and characteristic of the Old Red Sandstone conglomerates, 
and not found in other rocks; but they do sometimes occur in brown 
and green Silurian grits, as in this instance. 
Besides this cap of Old Red Sandstone at Kinard, there are seve¬ 
ral other places in the Dingle peninsula where the Old Red Sand¬ 
stone conglomerate lies unconformably on the brownstone, or other 
coloured grits—I shall notice them separately:— 
1. The first is at Sybil Head, a narrow strip of strong conglo¬ 
merate, only a few yards wide, dipping N. W. at 60° into the ocean, 
as before stated, and covering the upturned ends of the brownstone 
beds unconformably along the shore for nearly a mile and a half in 
length. 
