20 - Megathrustunderneath Washington and Oregon There isnt...

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21:44 Megathrust –underslab plate and the overriding plate North American Plate overrides, the Juan de Fuca Plate Rocks are being squeezed, which stores energy, which eventually leads to an  earthquake
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Megathrust Earthquake occur at subduction zones at destructive plate boundaries (convergent  boundaries, where one tectonic plate is forced (or subducts) under another. Due  to the shallow dip of the plate boundary, which causes large sections to get stuck,  these earthquakes are among the world's largest, with moment magnitudes ( Mw that can exceed 9.0 Mendocino Fracture zone—very seismically active
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Unformatted text preview: Megathrustunderneath Washington and Oregon There isnt seismicity under the megathrust.WHY? The boundary is locked Satellite based observations of fixed points on the earths surface (GPS) tells us that coastal areas of the Pacific We are squeezing, shortening the hanging wall of the mega thrust At the rate of half an inch a year, Vancouver is getting closer to Manatoga North American Plate Shortening When two plates converge toward each other and if the interface between them is locked 21:44 21:44...
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20 - Megathrustunderneath Washington and Oregon There isnt...

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