Four earthquakes up to magnitude 4.0 shook Louisiana, raising questions about hidden faults, seismic risks, and the region’s rarely studied geology.

This study links tectonic geometry and mineralogy to aftershock behavior, revealing how hydrous minerals influence seismic activity in subduction zones.

A persistent cluster of small earthquakes near Lake Murray, the large reservoir northwest of Columbia, South Carolina, fits a pattern of heightened seismic activity that has kept parts of the state on ...