Wright and Muff — Pre-glacial Raised Beach. 281 



angular and sub-angular pieces of the local rock, and one or two 

 rounded grits not found in situ in the immediate vicinity. 



At the head of the inlet Coosnaclasha, about half a mile 

 north-west of Black Head, a similar section is to be seen. The 

 boulder-clay is not so thick, and contains fragments of Old Eed 

 Sandstone. The gravel at the base is thicker, and rests on a 

 water-worn surface. This surface can be traced as a steeply- 

 shelving platform, from which the drifts have been denuded, 

 for a short distance along the north side of the inlet. 



In Bullen's Bay the boulder-clay rests directly on the Car- 

 boniferous Slates, and the raised-beach gravel is not seen. 



The rock-platform, covered by head, is seen in Kinsale Harbour 

 above the town. 



Around Nohaval and Eobert's Cove, the cliffs are bare and 

 precipitous ; and only slight traces of the platform, a few feet 

 above high- water mark, were found in the most sheltered situa- 

 tions. 



Ringabella. 1 — The raised-beach platform on the northern shore 

 of Eingabella Bay is from 40 to 60 yards wide. At its western end 

 it is overlain by boulder-clay only, and its surface is beautifully 

 glaciated by ice moving in the direction E.S.E., almost parallel to 

 the shore (see p. 256, and Plate XXV.). Its outer edge at this 

 point is from 8 to 10 feet above the line of sea-growth. 



As the drift-cliff is traced eastward from this point, the plat- 

 form beneath is less glaciated, while the boulder-clay becomes 

 mixed with angular material, and passes gradually into head. At 

 the same time, the pockets of raised-beach material lying on the 

 platform become more and more common. The following typical 



section is 30 to 40 yards from the pre-glacial cliff : — 



Feet. 



Head, with a few rounded stones, . . 10 



Well-rounded gravel and sand, . . 2 ± 



Platform — well smoothed. 



The platform is well developed from here to Myrtleville, and 

 the cliffs of head are sometimes very striking. At one point the 

 head is sufficiently removed to reveal blown sand banked behind 

 it against the rock-face at a height of 20 to 25 feet above the plat- 

 form. It has a decided stratification dipping seawards, with a few 



1 For localities in neighbourhood of Cork Harbour, see fig. 2, p. 285. 



