13 



or less vesicular and calcareous. Resting upon these ash rocks and 

 seen on the road to the ferry, is a mass of red felsites, showing flow- 

 lines, etc , some of which are quite ferruginous and rusty-looking. 

 Above the red felsites are fine-grained dark-gray felsites which in turn 

 support the gray grits and sandstones of the marine Cambrian. 



The red felsites at the Ferry road dip S. 55 E. mag. < 30-40. 

 Further east on the island, they dip in the same direction at a higher 

 angle, and all along the eastern shore of the island the dip of the 

 felsites conforms in a general way to that of the overlying Cambrian 

 marine beds. 



From the south-west end of Long island, across and beyond Kreak in 

 Barachois harbour, there is a break in the range of Coldbrook effusive Coldbrook 

 rocks that borders the north side of tha Barachois basin. This break fe 

 is partly the space occupied by Barachois harbour and partly the 

 ridge opposite Barachois pond, which is of Lower Carboniferous 

 conglomerate and sandstone. But near the mouth of McLeod brook, 

 which enters the head of this pond, the effusives again come into view. 

 Here they consist of dark gray amygdaloidal diabase, holding cavities 

 filled with calcite, and having intercalated beds of water-washed 

 felsitic sand, containing small oval fragments of soft black slate. At 

 one point the bedding has a dip of < 30. 



There must be a profound fault here with a downthrow to the south, 

 as the floor of the valley of McLeod brook is occupied by the 

 dark-gray shales or slates of the Bretonian division of the St. John 

 terrane. 



The Coldbrook rocks were again found further up this valley, on the 

 north side, where the Bourinot road crosses the ridge between the 

 valley and St. Andrew's channel at Boisdale. On this road the crest 

 of the ridge is of pre- Cambrian syenite or quartz-diorite, but where 

 the road begins to descend towards the valley of McLeod brook, this is 

 overlaid by dark-gray effusive rocks, some of them compact, with 

 tabular crystals of feldspar, others more vesicular, with calcite in the 

 cavities. A third variety shows pebbles of brown and red felsite in a 

 dark feldspathic paste. At the southern edge of these effusives there 

 is some purplish gray slate. 



A band of coarse-grained quartz-diorite then intervenes, separating Coldbrook 



. . effusives along 



the above enusives from another belt running along the brow or west side of 



McLeod brook valley. These show dark-gray, somewhat purplish- 

 weathering amygdaloid, having vesicles of calcspar, and are seen after 



