98 



LABRADOR 



These dikes of trap often occur in nests, as at Ice Tickle, 

 but, large or small, they are never wanting in any extended 

 view of the shore. They form striking features in the frown- 

 ing cliffs of the north; perhaps nowhere better displayed 

 than in a score of huge, black, vertical seams of trap part- 

 ing the schists of Mt. Blow-me-down. Another score of 



FIG. 14. 



From a photograph 



View of Striped Island, looking east. The highest point is about 200 feet 

 above the sea. The black bands represent horizontal sheets of trap, 

 cutting the gneiss. 



parallel dikes cut through Webeck Island. On account 

 of their great size on Mt. Blow-me-down, ranging from 

 one hundred to four hundred feet in width and exposed 

 for thousands of feet along their walls these dikes are 

 conspicuous even many miles offshore, compelling in the 

 mind of every voyager wonder at the stupendous force 

 that so cleaved the mountains to their mysterious depths. 

 Such dikes appear in the view of Bear Island (opp. p. 130). 

 They are small examples, but serve to show the essential 

 characteristics and that contrast of colour which makes the 

 dikes scenically important on the coast. Before the moun- 

 tains were wasted away to their present low relief, these 

 dikes extended upwards hundreds, if not many thousands, 



