The unusual holes in the ocean didn't reveal an underwater volcano or some hydrothermal vents, but rather something remarkable.

Researchers in the Science Advances journal have found a "megathrust fault" that could ... long strip beneath North America ...

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 states ...

The Cascadia subduction zone, where the oceanic Juan de Fuca plate descends beneath the overlying North American plate, extends 1100 km from northern California to northern Vancouver Island.

The timing and location of such megathrust earthquakes depend on factors such as the shape, roughness, composition, and fluid content of the fault. Aside from the danger they pose, such ...

It’s notorious for its megathrust earthquakes, powerful seismic events that occur where one tectonic plate is forced beneath another, releasing colossal quantities of energy. If the Nankai ...

Its eruption won’t trigger a tsunami or a massive land-based earthquake because of its depth and its distance from the region’s megathrust Cascadia fault. But scientists can use the lessons ...