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Based at the University of Washington, the PNSN operates seismograph stations and locates earthquakes in Washington and Oregon and provides information on Pacific Northwest earthquake activity and hazards.
List of locations that are sources of obsidian across the state. Also includes a scientific bibliography.
List of locations that are sources of obsidian across the state. Also includes a scientific bibliography.
Based at the University of Washington, the PNSN operates seismograph stations and locates earthquakes in Washington and Oregon and provides information on Pacific Northwest earthquake activity and hazards.

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February 26, 2016 at 6:15:03 UTC

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- Recently edited by merlin1
- Recently edited by merlin1