Water released from hydrous minerals identified as a viable trigger for slow earthquakes
Researchers have identified a geological mechanism that may explain why slow earthquakes occur in recurring cycles, concluding that episodic dehydration of hydrous minerals can generate intermittent pulses of fluid capable of triggering slow-slip events in subduction zones. The findings, published in Geology on June 18, 2026, combine field observations from New Caledonia with thermodynamic and mechanical modelling to explain how water released during metamorphism may initiate these elusive earthquakes.











