part 3] 



GLACIATION OE NORTH-EASTERN IRELAND. 



419 



powerful to reach Coleraine on the one hand and Newcastle 

 (County Down) on the other, and yet it apparently?!* ailed to reach 

 the eastern shore of Lough Neagh, or the low-lying land east of 

 Cookstown Junction and round Ballymena. This, in my opinion, 

 can only be explained on the supposition that those parts of the 

 area were still occupied by lobes of the Firth-of- Clyde Glacier, 

 which penetrated the country by way of the Ballyclare and Temple- 

 patrick Valleys, the valley of the Braid River above Broughshane, 

 and Glenravel by way of Parkrnore. 



Big. 12. — General direction of the ice-movement 

 the earlier stages of the alaciation. 



cluri 



ncj 



B^fiy.castle' 



Armoy^r 

 olef,aine ^ ""S/^^ 



+ Ballymoney" ■' 



Dung 



'Vi'^/l' / '' '/i'/i 1 ' 



'+'Ballymena / ' ) \ / / // f f j ' I 

 DraperstqwnJ/'' \ ^ v ba/he<5?\ ///' 'i ' 



oneymore VI ,<%? t .J /\J^JJ-L ' 



,t^<^0/ ki'stuTlV / I , 



xPortadowpJ / V/ Hl»sb.ortf , , 



Dundalk* 



v 41 



The western ice which crossed the Belfast Valley in the neigh- 

 bourhood of Moira and Portadown, and ascended the Silurian 

 uplands beyond, did not flow down the Belfast A r alle3 r beyond 

 Soldierstown and Lisburn, and this again can only be explained on 

 the supposition that the lower part of the valley was still filled by 

 the Scottish ice, the deposits from which are there found in such 

 profusion. 



In this connexion the two boulder-clays and the cross-striae on 

 the uplands 3 miles south of Newtownbreda are of considerable 

 interest. Although neither of the clays is known to contain the 



