Cascadia megathrust earthquake could trigger San Andreas fault

PHYSorg
Oct 3, 2025, 9:52 am272 ptsTop
When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground shaking from a magnitude 9+ earthquake incredibly destructive, the event triggers tsunamis and landslides to compound the damage. Now, a new study in the Geosphere suggests the "really big…

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