Americans have long lived in fear of the 'Big One' - an earthquake so enormous it would devastate the West Coast. The ...

Some Western states could soon see a "megaquake" due to an underwater fault line along the West Coast, a new study suggests. Scientists have mapped the Cascadia Subduction Zone - a 600-mile fault ...

Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust ...

The Cascadia subduction zone, where the oceanic Juan de Fuca plate descends beneath ... across the deformation front to the west coast of Vancouver Island. JdF indicates reflections marking top of ...

At the confluence of multiple tectonic plates, on the Pacific Ring of Fire, sits the West Coast of the United ... risk for a catastrophic Cascadia subduction zone earthquake, potentially ...