552 FR. Oowper Reed—Coastal Features, Co. Waterford. 
nearer the base of the cliff. Resting directly upon it we find 
a deposit which must undoubtedly be correlated with the Lower Head. 
This bed has a thickness of 8—4 feet, conforms to the solid rock-slope 
on which it reposes, and disappears with it below the present beach- 
level a few yards out from the western angle of the beach. It is 
composed of purely local materials derived from the immediately 
adjacent beds of the Old Red Sandstone flanking the valley; the 
fragments are not sorted according to size, but are roughly arranged 
in layers, and, though the larger ones (some are 2~3 feet long). are 
angular, the smaller ones, consisting of the soft red sandstone of the 
cliffs, are more or less rounded, and there are intermixed a few small 
rounded quartz pebbles similar to those in the neighbouring con- 
glomerates. THON 
SEection oF Drirr: at Heap or RATHMOYLAN Cove. 
Old Red Sandstone. 
Lower Head. 3-4 feet. 
Boulder-clay. 6 feet. 
Upper Head. 1 foot. ° 
Sandy shingle, 13—2 feet thick, thinning eastwards and replaced by clay at E*. 
Subsoil and soil. 
POO bo 
Resting on this head, but not as clearly marked off from it as usual, 
is a reddish Boulder-clay containing many small rounded pebbles 
mostly of quartz or of the Old Red conglomerates, with comparatively 
few large or angular fragments. These few, however, are frequently 
glaciated and scratched, and in addition to boulders of the immediately 
local rocks there are others of a more distant origin; thus, there are 
angular fragments of a greyish felsite showing beautiful fluxion 
structure and banding, and there are well-rounded boulders and 
pebbles of a fine-grained whitish quartzite. Less common are 
subangular small slabs and chips of black slate, more or less rounded 
boulders of a greenish felsitic ash or felsite, and much weathered and 
honeycombed pieces of Carboniferous Limestone. The total maximum 
thickness of the Boulder-clay here seen is about 6 feet, and it appears 
to thin out against the valley side and to overlap the Lower Head 
in the other direction. 
Above this Boulder-clay comes a regular but unusually coarse deposit 
which must be correlated with the Upper Head. It is 1 foot thick 
and consists of closely-packed and irregularly bedded angular slabs 
and blocks of the local sandstones of the Old Red identical with those 
