Wright and Muff — Pre-glaeial Raised Beach. 253 



3. Typical Sections. 



Section in Courtmacsherry Bay. — Along the greater portion of 



the northern shore of Courtmacsherry Bay stretches a remarkably 



smooth platform of rock about 5 feet above high-water mark. 



At a varying distance from its seaward edge it disappears beneath 



a mass of drift. The drift deposits lie on the water- worn platform, 



and are banked against a cliff or slope of rock which rises from 



behind them to a height of 150 feet above 0. D. They are 



packed into the angle between the platform and the cliff, and 



form a terrace of varying width. About 350 yards east of the 



Coastguard Station at Howe's Strand, the drift-cliffs present the 



following section : — 



Feet. 



Upper head (rubble and soil), . . . . 2 



Boulder-clay, . . . . . . 10 



Lower head or rubble-drift, . . 5 



Stratified pebbly raised-beach sand, lying 



among sub-angular blocks of rock, . . 1| 



Water-worn rock -platform. 



The succession and relation of the deposits to one another are 

 shown in the following diagram : — 



Fig. 1. — Diagram of Section in Courtmacsherry Bay. 



1. Kaised-beach gravel and blocks. I 4. Boulder-clay. 



2. Blown sand. j 5. Upper bead. 



3. Lower bead. 



X2 



