Earth is splitting open beneath the Pacific Northwest, scientists say

For the first time, scientists have watched a subduction zone literally fall apart beneath the ocean floor. Using advanced seismic imaging, they found the Juan de Fuca plate splitting into fragments as it sinks beneath North America. Rather than collapsing all at once, the plate is tearing piece by piece, like a train slowly derailing. The finding helps explain ancient plate fragments and could refine how scientists understand earthquake behavior.

sciencedaily.com