Coastal communities from northern California to British Columbia live atop the Cascadia Subduction Zone, which spans about ...

The Cascadia megathrust is a massive fault thought capable of generating devastating magnitude 9 earthquakes similar to the 2011 Tohoku temblor, but its structure has long eluded scientists.

The Cascadia Subduction Zone looks a little different than researchers thought. Here's what that means for "The Big One." ...

RELATED: Multnomah County mulls 'risk bonding' for seismically vulnerable Portland fuel tank hub Cascadia megathrust earthquakes are caused by the Cascadia Subduction Zone that sits about 40 miles ...

"It's giving us the first really detailed look at this huge megathrust fault that we've ... the other toward the Earth's mantle. In the Cascadia Subduction Zone, the Juan de Fuca tectonic ...

The Cascadia megathrust, a formidable fault system capable of producing catastrophic magnitude 9 earthquakes, is poised to unleash its most severe impacts offshore of Washington state and ...

but the paper found the liquid is coming from the Cascadia megathrust (the boundary between two of Earth’s tectonic plates), where temperatures are estimated to be around 300 and 500 degrees ...

Once social media and a late-night talk show host got hold of the news, misinformation began flying about the leak’s ominous link to the region’s next megathrust earthquake. Here’s the real ...