'Megathrust' Earthquake Could Trigger San Andreas Fault, Scientists Warn

'Megathrust' Earthquake Could Trigger San Andreas Fault, Scientists Warn

A newly identified link between two notorious geologic zones suggests a major earthquake at one site could trigger another huge quake at the other, creating a double-whammy of destruction.

Twin threat: Cascadia and San Andreas faults may be seismically linked

Two fault systems on North America’s West Coast – the Cascadia subduction zone and the San Andreas fault – may be synchronized, with earthquakes on one fault potentially triggering seismic