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The 1700 Cascadia earthquake occurred along the Cascadia subduction zone on January 26, 1700, with an estimated moment magnitude of 8.7–9.2. The megathrust earthquake involved the Juan de Fuca plate from mid-Vancouver Island, south along the Pacific Northwest coast as far as northern California.
A map of the Juan de Fuca plate with noted seismic incidents, including the 2001 Nisqually earthquake. The Juan de Fuca plate is bounded on the south by the Blanco fracture zone (running northwest off the coast of Oregon), on the north by the Nootka Fault (running southwest off Nootka Island, near Vancouver Island, British Columbia) and along the west by the Pacific plate (which covers most of ...
Three types of earthquake are observed in the area: rare megathrust events, such as the 1700 Cascadia earthquake, shallow events within the North American plate and deeper intraslab events within the Juan de Fuca plate as it sinks into the mantle. The third type of earthquake is the one that has led to the greatest amount of damage.
The Juan de Fuca Ridge is a mid-ocean spreading center and divergent plate boundary located off the coast of the Pacific Northwest region of North America, named after Juan de Fuca. The ridge separates the Pacific Plate to the west and the Juan de Fuca Plate to the east. It runs generally northward, with a length of approximately 500 kilometres ...
It separates the Juan de Fuca and North America plates. New Juan de Fuca plate is created offshore along the Juan de Fuca Ridge. [8] [9] The Juan de Fuca plate moves toward, and eventually is pushed under the continent (North American plate). The zone separates the Juan de Fuca plate, Explorer plate, Gorda plate, and North American plate.
During the last 66 million years, nearly the entire west coast of North America has been dominated by a subduction zone, with the Farallon plate subducting beneath the North American plate. Presently, the Juan de Fuca plate (with its Explorer and Gorda satellite plates) and the Rivera and Cocos plates are the only remnants of the once much ...
The western part of Washington State lies above the Cascadia subduction zone, where the Juan de Fuca plate is being subducted beneath the North American plate.The seismicity of this region consists of rare great megathrust earthquakes, like the 1700 Cascadia earthquake and more common earthquakes originating from within the subducting slab.
Juan de Fuca (10 June 1536, Cefalonia – 23 July 1602, Cefalonia) [1] [2] was a Greek sailor who served Philip II of Spain.He is best known for his claim to have explored the Strait of Anián—now known as the Strait of Juan de Fuca—between Vancouver Island (now part of British Columbia, Canada) and the Olympic Peninsula (northwestern Washington state in the United States).