336 IP s t e I s i a 



most wholly quartz veins (PlateXXIX). They pre- 

 sent no regularity of direction beyond that seen in 

 the shaly partings and less conspicuous master 

 joints of the district. Rarer minerals noted are 

 feldspar and pyrite. Gold no dou]:t occurs 

 because it has been found in paying ([uantities 

 at several ])()ints along the coast adjacent to 

 Providence Cove and Port Renfrew, and gold 

 is one of the most universal minerals of ancient 

 crystalline rocks. 



After all these events the upturned edges of 

 the rocks were worn down. The present sur- 

 face rocks once were rock masses thousands of 

 feet b.elow the surface. The slow and unerring 

 processes of u])lift, weathering and wear have 

 loosened millions of cubic feet of this rock to 

 become the play of the waves and the compacted 

 material of subsequent geologic epochs. How- 

 many times transport and deposit have been 

 effected along this coast does not yet appear; 

 but the record is spread of one. 



Out of the material worn off the tilted shales 

 another formation was built. Its beginning and 

 progress have been so recent that within the 



