Vol. 58. ] THE FOSSILIFEROUS SILURIAN BEDS OF KERRY. 249 
from the overlying beds, contains well-rounded blocks, chiefly of 
sandstone resembling the Smerwick Beds immediately beneath, but 
granitic and rhyolitic pebbles also occur. Mainly below it, but at 
one point penetrating this conglomerate, is a quartz-porphyry of 
Fig. 16.—Section across Foilavaddia.. (For explanation of D 4, ete. 
see ps 248.) 
[Horizontal scale: 1 inch=10 yards. ] 
Fig. 17.—WSection across the inlet of Coosgoriib.. 
; D (23) ‘3 D D (14) Q Q Sm 
[Horizontal scale: 1 inch=10 yards. | 
D (13) = Red ashes. ~ Q = Intrusive quartz-felsite. 
D (14) = Conglomerate. Sm = Smerwick Beds. 
D = Fault-débris, with many 
quartz-veins, | 
somewhat peculiar character, described on p. 263. This rock is 
probably intrusive along the junction of the conglomerate and the 
Smerwick Beds which come immediately below (see fig. 17, above). 
From the foregoing account of the rocks seen on both sides of the 
Sybil peninsula, it is clear that a well-marked conglomerate occurs 
between the fossiliferous Silurian and the Smerwick Beds; but, 
while on the west side of the promontory the junction between the 
conglomerate and the overlying beds is conformable, on the east 
side it is a faulted one. This renders the correlation of the two 
sets of exposures more difficult than would otherwise be the case.. 
