140 Proceedinga of the Royal Irijth. Aco.de/ny. 



Point, ther form considerable tracts of level land and may be con- 

 venientlj examined. Of these terraces, wMcli may be probably called 

 'raised beaches,' there appear to be two; the lo-wer, rising n ::i 3 to 

 to 7 feet above high -"water mark of spring-tides: the so:: from 

 10 to 15 feet above the same datum. Mr, Trail has 1:- ;: ' hr-e 

 terraces as they occur at Greenore, where, in the stratified gia .Is of 

 which they are formed, there are bands of oyster shells, together 

 with shells of the qenera. Mytilis, Peeten, llfatica, Littorina, ko.. At 

 Killovren, near Eostrevor, similar shells were found in shingle, 10 feet 

 above high- water mark. The two teiTaces on the opposite shore are 

 similar ia formation. 



" On the lower terrace, that of abont 1 to 1 5 feet above high- water 

 mark, is built the town of "^arrenpoint, together with the old keep 

 of [N^arrowwater, on the estuary of the Xewry river. 



" At Annalong Harboiix the terrace is at 40 feet elevation above 

 Ordnance datum, or a little over 22 feet above high- water line ; this 

 is, therefore, the upper terrace. The terrace bordering the coast near 

 Dundrum is referable to the first or lower level." 



(p. 21.) — " Other remains of raised beaches are to be found at 

 intervals along the shores of Carlingf ord Lough to "Warrenpoint from 

 10 to 12 feet above the water-line. 



' ' In addition to the raised beaches, clear indications of terraces, 

 formed out of the drift deposits are to be observed at several levels , 

 viz. at those of 50, 75, and 150 feet. These are often more easily to 

 be recognised when viewed at some little distance than when standing 

 upon them. The terraces of this class are of more ancient date than 

 those described above, and are probably referable to the period when 

 the land was emerging from the sea, towards the close of the Glacial 

 Period, the terraces having been formed during long pauses." 



Memoir of Geological Survey of Ireland, Sheets 37, 38, and part 

 of 29 (1871). 



The area described in this Memoir lies altogether in the County 

 Down. 



'p. 42.} — Raised Beaches. — Skirting the shores of Belfast Lough, 

 between Hollywood and Donaghadee, we find a deposit of marine sand 

 gravel, the maximum elevation of which is about 20 feet above the level 

 of high water. In this deposit, artificially formed, flint flakes were dis- 

 covered some time back, of which Mr. G. T. Du Xoyer, in a communica- 

 tion addressed to the Secretary of the Pioyal Geological Society of 

 Ireland, thus writes : ' I may remark that when these singular flakes were 



