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  2. Juan de Fuca plate - Wikipedia

    en.wikipedia.org/wiki/Juan_de_Fuca_Plate

    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 ...

  3. Juan de Fuca Ridge - Wikipedia

    en.wikipedia.org/wiki/Juan_de_Fuca_Ridge

    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 ...

  4. Gorda Ridge - Wikipedia

    en.wikipedia.org/wiki/Gorda_Ridge

    The Juan de Fuca and Gorda plates are moving east-northeast, subducting under the North American plate at a much slower rate of 2.5 to 3 cm per year. [6] Because the ridge is divided into three distinct parts, each section has its own spreading rate, caused by the slab-pull and ridge-push of the surrounding tectonic plates .

  5. Cascadia subduction zone - Wikipedia

    en.wikipedia.org/wiki/Cascadia_subduction_zone

    The magnitude of a megathrust earthquake is proportional to length of the rupture along the fault. The Cascadia subduction zone, which forms the boundary between the Juan de Fuca and North American plates, is a very long sloping fault that stretches from mid-Vancouver Island to Northern California. [18]

  6. 1700 Cascadia earthquake - Wikipedia

    en.wikipedia.org/wiki/1700_Cascadia_earthquake

    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.

  7. List of fracture zones - Wikipedia

    en.wikipedia.org/wiki/List_of_fracture_zones

    The plates that host the fractures are Nazca, Pacific, Antarctic, Juan de Fuca and Cocos among others. Fracture zones being subducted under Southern and Central America are generally southwest–northeast oriented reflecting the relative motion of Cocos, Nazca and the Antarctic plates.

  8. Geology of the Pacific Northwest - Wikipedia

    en.wikipedia.org/wiki/Geology_of_the_Pacific...

    These two plates converge at 3–4 centimetres (1.2–1.6 in) per year at present. This is only about half the rate of convergence of 7 million years ago. [2] The small Juan de Fuca Plate and two platelets, the Explorer Plate and Gorda Plate are the meager remnants of the much larger Farallon oceanic plate. The Explorer Plate broke away from ...

  9. Queen Charlotte triple junction - Wikipedia

    en.wikipedia.org/wiki/Queen_Charlotte_Triple...

    The Juan de Fuca plate, created at the spreading ridge southwest of the triple junction, is moving at a rate of 45.7 mm/yr at an azimuth of 244˚ in relation to the North American plate, and the Pacific plate is moving at 58.6 mm/yr in relation to the Juan de Fuca plate. [2]