The San Andreas Fault and Queen Charlotte Fault are transform plate boundaries developing where the Pacific Plate moves northward past the North American Plate. The San Andreas Fault is just one of several faults that accommodate the transform motion between the Pacific and North American plates.
What kind of fault does a transform boundary?
A transform fault is a special case of a strike-slip fault that also forms a plate boundary.
What is the most common fault in Transform boundaries?
The world's best known transform fault is the San Andreas Fault in California (Figure below). At this fault, the Pacific and North American plates grind past each other. Transform plate boundaries are common as offsets along mid-ocean ridges.