196 CRUISE OF THE NEPTUNE 



The granite-gneisses are also most abundant inland, as was 

 seen along the lower part of Chesterfield inlet and in the 

 country forty miles inland from Winchester inlet. 



The granites occupy the shores and islands between Win- 

 chester inlet and the west side of Island bay, about half way to 

 Fullerton, when they give place abruptly to a series of dark 

 schists. These schists are largely micaceous, but there are also 

 frequent bands containing considerable quantities of horn- 

 blende, and these are more basic than the more common mica- 

 schists, which always contain quartz in varying amounts. These 

 mica-schists appear to have been clastic rocks associated with 

 bands of trap, all having been altered and foliated by the granite 

 intrusion. The schists are very regular, and have a constant 

 strike of 1ST. 10 W. Many of the basic bands contain varying 

 quantities of pyrite, but it was never seen in sufficient abund- 

 ance to constitute a mine. All the schists carry dark-red 

 garnets, some of which are regular in their crystallization and 

 of good size. 



The islands about Fullerton harbour are formed partly of 

 granite and partly of these dark schists. On this eastern 

 contact of the granite with the area of schistose rocks, the latter 

 have been greatly disturbed by the intrusion, being squeezed, 

 contorted and broken by granite masses, as may be seen from 

 the illustration. Areas of coarser basic rocks now occur in the 

 rocks along the coast, usually in the form of coarse gabbro, but 

 often in a more altered condition as coarse hornblende-gneisses. 

 The granites are the prevailing rocks along the coast as far 

 north as the mouth of Wager inlet, and have generally a red or 

 pink colour. Associated with them and evidently altered by 

 their intrusion are patches of gray quartzose gneiss, and less 

 frequently areas of old basic intrusive rocks. 



At Whale point, where the rocks were closely examined, the 

 oldest rock was represented by a medium to fine-grained, gray 



