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Contact: Jim Barlow
University of Oregon

Ashley Streig, University of Oregon

Caption: University of Oregon doctoral student Ashley Streig shows a tree stump on which tree-ring dating indicates the tree was cut prior to the earthquake of 1838 on the San Andreas Fault in the Santa Cruz Mountains.

Credit: University of Oregon

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Related news release: San Francisco's big 1906 quake was third of a series on San Andreas Fault

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