Cascadia Subduction Zone Found to Be Fracturing in Stages
Researchers have identified active fractures in the Juan de Fuca and Explorer plates beneath the Pacific Northwest, indicating the Cascadia subduction zone is dismantling in stages rather than failing all at once. This gradual breakup, captured via seismic imaging, offers insights into how tectonic systems die and may influence future earthquake behavior, though it does not alter immediate regional hazard levels.