22 SIDNEY POWERS 



West of Clarke Head is an excellent exposure showing sandstones 

 overlain by black ash, and this by agglomerate, the whole being 

 cut off by a fault (Fig. 16). North of Clarke Head, agglomerate 

 is exposed, and copper has been sought at this locality. 



East of Swan Creek, sandstone appears, overlain by a volcanic 

 conglomerate — a mass of fragments 6 inches to 2 feet in diameter, 

 of various kinds of basalt and agglomerate, imbedded in a red sand- 

 stone matrix. Above this, with a gradual transition, comes a true 

 agglomerate of angular blocks imbedded in a tuffaceous matrix 

 (Fig. 17). Sandstone appears above the agglomerate, and the 

 contact is locally cross-cutting. 



At Wasson's Bluff, agglomerate appears above red sandstone, 

 with a conformable contact. East of Wasson's Bluff the agglom- 

 erate rests unconformably on the sandstone. Another local uncon- 

 formity is found at McKay Head, where the sediments are overlain 

 by agglomerate with columnar basalt above. East of McKay 

 Head are two remnants of the same basalt, with faulted contacts. 

 The cross-cutting nature of some of the contacts may indicate 

 volcanic vents. 



Two Islands, known also as The Brothers, consist of basalt 

 flows dipping gently northwest. The islands are probably sepa- 

 rated from each other and from the mainland by faults. 



East of Moose River the sediments reappear and extend from 

 this point around Minas Basin, continuously as far as the Shube- 

 nacadie River. The structure of the sandstones between Moose 

 River and Five Islands may be seen in Fig. 18. Near Blue Sack 

 (see Fig. 19) they are greatly slickensided, as shown in detail in 

 Fig. 20. 



On the top of the cliffs east of Moose River, tuff, overlain by 

 agglomerate, forms a capping for the sandstone. The thickness of 

 the volcanics varies, but is only 100 feet at a maximum. Near 

 Blue Sack are two beds of agglomerate interbedded with sandstone, 

 the lower being 100 feet or more, the upper 20 feet, with 10 feet of 

 intervening sandstone. One of the contacts is cross-cutting, but 

 there can be little doubt that the volcanics were formed contem- 

 poraneously with the sandstone, as blocks of basalt occur in the 

 latter. 



