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Three Moderate Quakes Hit Cascadia Subduction Zone
Mitch Battros - Earth Changes Media
The Cascadia Subduction Zone which runs along the Oregon Coast was hit today by three moderate quakes measuring 5.2, 4.8 and 4.3 magnitude. This is not necessarily unusual, but has the potential of setting off a very large event if a series of quakes continue. A history of mega-quakes have occurred along this stretch measuring into the magnitude 9's.
The Cascadia Subduction Zone is a very long sloping fault that stretches from mid-Vancouver Island to Northern California. It separates the Juan de Fuca and North America plates. New ocean floor is being created offshore of Washington and Oregon. As more material wells up along the ocean ridge, the ocean floor is pushed toward and beneath the continent. The Cascadia Subduction Zone is where the two plates meet.
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