Final answer:
Double faults in Canada are typically found in seismic active regions such as British Columbia, especially where the Juan de Fuca Plate subducts beneath the North American Plate.
Step-by-step explanation:
Double faults, within the context of geology, refer to a geological feature where there is a step-like crack on the Earth's surface which occurs due to tensional and compressional forces. In Canada, double faults can be found along the western coast, particularly in regions with high seismic activity, such as British Columbia. This province is part of the Pacific Ring of Fire, where tectonic plate interactions frequently result in earthquakes and faulting. The most notorious system of double faults in Canada is associated with the Juan de Fuca Plate subducting beneath the North American Plate, which has the potential to produce significant geological events, including earthquakes.