Wright and Muff — Pre-glacial Raked Beach. 279 



Courtmacsherry Bay. — The following notes, in the handwriting 

 of Jukes, are taken from the 6-inch maps deposited in the Geological 

 Survey Office : — 



About the middle of Seven Heads Bay (on the west side of 

 Courtmacsherry Bay) there is noted : — " Thick deposit of red 

 sandstone, and conglomerate (Recent) with beds of sea-sand 

 dipping 10° south." 



A short distance to the north : " Red conglomerate and sand- 

 stone, 10 to 15 feet. Recent." 



And again, a little further on : "10 feet, on top of slates and 

 grits, and filling up all hollows in them, of coarse sandstones and 

 conglomerate, small pebbles [of] quartz, well-rounded." 



In the small bay north of Broadstrand Bay : " Sand and 

 gravel, stained bright red and brown," is recorded; and again, 

 half a mile south of Land Point, " 6 feet and upwards of pure 

 sand and pebbly gravel stratified horizontally." 



250 yards north of the last are : " Hard layers of Recent sand- 

 stone, dark brownish-black colour, 4 feet." 



Though the localities have not been visited, there can be little 

 doubt that these observations refer to the cemented gravel and 

 sand of the raised beach. 



Extending for about one-third of a mile along the south side of 

 Broadstrand Bay, there is a remarkably level platform cut in the 

 Carboniferous Slate, and overlaid by a thick deposit of boulder- 

 clay. The rock surface beneath the boulder-clay is striated. 

 (See 37, Appendix.) 



Very fine sections of the raised beach are exposed along the 

 north side of Courtmacsherry Bay, eastwards from Howe's Strand. 

 Immediately after passing the Coastguard Station, the broad 

 wave-worn platform, with the cliff of drifts behind, is seen. A 

 section, 350 yards east of the Coastguard Station, has already 

 been described (see p. 253). 



Nearly 500 yards from the Coastguard Station, the cliffs showed 

 a section as follows : — 



Feet. 

 Upper head, . . . . . . 0-2 



Yellowish-grey boulder-clay, . . . . 3-4 



Lower head, . . . . 6 



Brown and black ferricrete sand, well 



bedded with occasional pebbles, . . 5 



