6 mm/yr in relation to the Juan de Fuca plate.  It has been proposed as well that the Explorer plate which makes up one of the three points of the junction is an ephemeral (short lived) plate that behaved independently for a brief period. Around 4 Ma it rapidly evolved and culminated as a new transform plate boundary.  On the east it is becoming coupled with North America, while the western side becomes part of the Pacific Plate. Earthquakes also occur due to the separating of the Pacific and North American Plates along the Queen Charlotte Basin.