24 



SIDNEY POWERS 



This strip of Triassic is bounded on the north by a fault which 

 probably continues east almost as far as Truro. The fault may be 

 seen near the town of Two Islands, and between Moose Creek 

 and Blue Sack the older rocks may be seen in one place at the top 

 of the cliffs, in contact with the Triassic volcanics. 



Fig. 20. — A detailed view of the slickensides north of Long Island of the Five 

 Islands. The polished surfaces strike at right angles to the beach and the movement 

 has been horizontal. Little or no vertical displacement is shown, but the slicken- 

 sided surfaces strike toward the Five Islands between each of which there is a fault. 

 It is impossible to determine which are the major fault-planes. 



Five Islands. — The Five Islands are situated west of Gerrish 

 Mountain. Their names, from east to west, are: Moose, Diamond, 

 Long, Egg, and Pinnacle islands, and Pinnacle Peak (Fig. 21). 

 Moose Island is nearly a mile in length and half a mile in width. 

 The highest point on it is 350 feet above sea-level. Diamond 

 Island is a small, round island, Long Island is one-quarter of a mile 

 long and 180 feet in height at the center. Egg Island is smaller 



