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2019-2020 Purcell Mountain Swarm

Earthquakes in the swarm have exhibited either normal or strike-slip faulting, but we have not yet studied this sequence closely. Preexisting knowledge of the area is limited. Before the installation of the USArray stations, we could only reliably detect earthquakes in this area down to around magnitude 2.5, and no active faults have been mapped in the area.

Last Modified: April 22, 2022