A file on the Geology of Race Rocks as an Abiotic Factor in the Distribution of Organisms.   Access it here: http://www.racerocks.com/racerock/abiotic/geology/geology.htm

See also :

The geological history of the Metchosin igneous complex

Geological History of Vancouver Island
http://www.crd.bc.ca/watersheds/protection/geology-processes/geologicalhistoryVI.htm

Glacial Erratic on Taylor Beach made of pillowlava

Island of pillowlava at TowerPoint

Glacial erratic conglomerate rock on the south side of outer Pedder Bay