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The Cascadia subduction zone is a 960 km (600 mi) fault at a convergent plate boundary, about 100–200 km (70–100 mi) off the Pacific coast, that stretches from northern Vancouver Island in Canada to Northern California in the United States.
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 .
For decades, scientists have warned about the potential of the Cascadia Subduction Zone, a megathrust fault that runs offshore along the coast from northern Vancouver Island to Cape Mendocino ...
The Little River Fault (see the QFFDB, Fault 556) is representative of an extensive zone of faults along the north side of the Olympic Peninsula and in the Strait of Juan de Fuca (likely connected with the fault systems at the south end of Vancouver Island, see fault database map), but these lie west of the crustal blocks that underlie the ...
The boundary between the two is known as the megathrust, or the Cascadia subduction zone, fault. “That plate-boundary fault is normally locked, and stresses build up, and then when it lets go ...
A magnitude-9.0 earthquake on the Cascadia fault and the resulting tsunami would kill an estimated ... A map of the Pacific Ring of Fire — where tectonic plates converge to form subduction zones ...
The most prominent red line is the San Andreas fault (overall probability of rupture ~70%). The red zone at the northwest corner is the southern end of the Cascadia subduction zone , that on the California-Nevada state line is Walker Lane .
The arc formed due to subduction along the Cascadia subduction zone. Although taking its name from the Cascade Range , this term is a geologic grouping rather than a geographic one, and the Cascade Volcanoes extend north into the Coast Mountains , past the Fraser River which is the northward limit of the Cascade Range proper.