The source of the earthquake was the Nootka transform fault which separates the Juan de Fuca and Explorer plates and has been the origin of at least five additional moderate to large events since 1918.
The source of the earthquake was the Nootka transform fault. This Nootka transform fault separates the Juan de Fuca and Explorer plates. This Nootka transform fault has been the origin of at least five additional moderate to large events since 1918.