The “Really Big One” Might Trigger California’s Next Catastrophe, Scientists Warn

Geologic clues reveal a hidden link between two major faults. A Cascadia quake might set the San Andreas in motion soon after. When the tectonic subduction zone beneath the Pacific Northwest shifts, it does so violently. A magnitude 9+ earthquake in this region would unleash powerful ground shaking, tsunamis, and landslides, each adding to the [...]

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