According to the Pacific Northwest Seismic Network (PNSN), GSZs produce the largest earthquakes in the world and the Cascadia Subduction Zone has produced earthquakes of magnitude 9.0 or greater ...

WASHINGTON, USA — A "swarm" of small earthquakes near the summit of Mount Rainier Tuesday is no cause for concern, according ...

In the Cascadia subduction zone, medium and large-sized 'intraslab' earthquakes, which take place at greater than crustal depths within the subducting plate, will likely produce only a few ...

A 700-mile fault could snap by 2075, sinking parts of Portland, Seattle & SF. The Cascadia megaquake may trigger a 100-ft ...

The Cascadia Subduction Zone is a 620-mile-long fault that stretches from British Columbia to Northern California, and pressure is building daily. Skip Navigation. Share on Facebook; ...

Northern California's Cascadia Subduction Zone Hit by 11 Earthquakes Over Weekend. Published Feb 04, 2019 at 6:53 AM EST Updated Feb 06, ... according to the United States Geological Survey (USGS).

A HUGE magnitude 6.3 earthquake from the Cascadia Subduction Zone rocked the US West Coast today, ... but no tsunami warning has yet been issued by the United States Geological Survey (USGS).

A schematic cross section of the Cascadia Subduction Zone shows the ocean floor plate (light gray) moving under the North American continental plate, along with other features. Credit: U.S ...

Jan. 26, 2025, marks 325 years since the last great earthquake on the Cascadia subduction zone. It’s a time to reflect on what we’ve learned about this largest fault system in the lower 48 ...

A USGS study from 1999 by Stanley et al. investigates crustal-scale structure of this ... Seismic reflection imaging of two megathrust shear zones in the northern Cascadia subduction zone ...

“The Cascadia Subduction Zone is so large if it unzipped from one end to the other, ... but historical and geological evidence indicate one will happen in the future. Stay Connected.

The Cascadia Subduction Zone is a 620-mile-long fault that stretches from British Columbia to Northern California, and pressure is building daily. Skip Navigation. Share on Facebook; ...