The field of plate tectonics is not that old, and scientists continue to learn the details of earthquake-producing geologic faults. The Cascadia Subduction Zone—the eerily quiet offshore fault that threatens to unleash a magnitude-9 earthquake in the Pacific Northwest—still holds many mysteries.
Click here for original story, Warm liquid spewing from Oregon seafloor comes from Cascadia fault, could offer clues to earthquake hazards
Source: Phys.org