Cascadia subduction zone

Scientists have captured a subduction zone off Vancouver Island in the process of tearing itself apart, suggesting these massive tectonic systems may die piece by piece rather than all at once. The finding offers new insight into how subduction zones end over geological time, with implications for understanding seismic hazards in the Pacific Northwest, where the Cascadia zone poses earthquake and tsunami risks.

A new study suggests that the tectonic plate beneath the Pacific Northwest is actively tearing and deforming deep underground. Researchers say the fracturing could reshape understanding of earthquake risks in the region, which sits above the Cascadia subduction zone. The findings are drawing wide attention because of the potential implications for the millions of people living in the area.