RAISED BEACHES. 307 



are five terraces on the N. W. side with heavy buttresses, 

 and beyond four terraces come in sight (^). The strata 

 here are nearly horizontal, dipping under the Strait at 

 a very slight angle. At the eastward termination of the 

 formation are again seen five very regular terraces (C)< 

 running out in a long low point, beyond which rise the 

 syenite hills. At Blanc Sablon five terraces are very 

 distinctly marked, the second of which is the highest ; and 

 there is a beach of huge bowlders very regularly packed 

 by the action of the waves, as observed by Admiral Bay- 

 field. 



In Chateau Bay and Henley Harbor are some fine ex- 

 amples of ancient sea-margins. They occur in recesses 

 in the shore which have been sheltered from the denud- 

 ing agency of the waves and strong arctic currents, 

 which have swept around this bend in the coast with 

 great power. The most plainly marked example forms 

 the eastern shore of Henley Harbor, being the western 

 short of Henley Island. This beach, which is one hun- 

 dred and eighty feet high above the water-level, is com- 

 posed of three well-marked terraces, which become 

 steeper as we go from the bottom to the top. The 

 upper terrace begins at the base of the basaltic columns 

 capping this island, and is covered at its upper edge with 

 the debris from this mass of trap. The two lower ter- 

 races at the northern end of the island present a delta- 

 like expansion facing the northwest. On these terraces, 

 which are destitute of the usual covering of moss and 

 Empetrum, can be most distinctly seen the windrows of 

 pebbles and gravel thrown up by the retreating waves. 

 A continuation of this beach is seen on Castle Island 

 just south. (Seep. 134.) 



