14 W. H. Twenhofel — Physiography of Newfoundland. 



George River, an almost straight line. The Table Point sag 

 has a thousand-foot fault at its back, Logan has described a fault 

 at the back of the Port au Choix offset, while numerous faults 

 are known about St. George Bay, at the back of which is the 

 great displacement described by Murray. Of Point Ferolle 

 nothing is known. 



Evidence of Uplift. 



In shaping the surface of Newfoundland, relative elevation 

 has been an extremely important factor, and the evidence for 

 this is given in the paragraphs that follow. 



Youthful aspect of the streams. — The rivers of the west 

 coast present a rather striking aspect of youth. Except where 

 the mouths are drowned, all that were seen consist in their 

 lower courses of a series of rapids and falls and flow as a rule 

 in steep-walled gorges. Inland the waters move more slowly, 

 but the numerous lakes with rapid waters between, as described 

 by Murray and Howley, prove the immaturity of drainage. 



Terraces. — From the Straits of Belle Isle to the southwest 

 corner of the island, systems of terraces rise like giant staircases 



Fig. 6. 



Fig. 6. Elevated terraces cut in igneous rock at Beverly Head, north of 

 the Bay of Islands. The uppermost is about 400 feet, the lowest about 20 

 feet, the very marked one about 75 feet. Photograph by Charles Schuchert. 



from the sea. The lowest of these is less than a dozen feet 

 above high water, the highest observed rises above 400 feet. 

 Finely preserved examples of a 25-foot terrace, backed by a 25- 

 foot cliff, exist on the islands north of the Port au Choix penin- 

 sula, on the peninsula itself, and at numerous places south 

 therefrom to the Bay of Islands, particularly in the islands at 



