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One of the largest known earthquakes in the Pacific Northwest - The 1872 North Cascades Earthquake, occurred on December 15, 1872. Recent estimates revealed in a 2021 research paper by Brian L. Sherrod, Richard J. Blakely, and Craig S.
Recently, while checking out one of my favorite FB groups “Dug Fur Trade and Contact Period Relics” I came across a post from Bill Marshall. Fascinated with the finds he posted I reached out to him to do this interview. I learned a lot about the ancient copper culture and the fur trade and contact period artifacts in his area. Bill was absolutely fascinating to talk to and the passion he has for history, his artifacts and metal detecting really showed through.
Paleomagnetic and GPS data indicate that Washington and Oregon have rotated clockwise for the past 16 Myr. Late Cenozoic and Quaternary fault geometries, seismicity lineaments, and focal mechanisms provide evidence that this rotation is accommodated by north directed thrusting and right-lateral strike-slip faulting in Washington, and SW to W directed normal faulting and right-lateral strike-slip faulting to the east.
Paleomagnetic and GPS data indicate that Washington and Oregon have rotated clockwise for the past 16 Myr. Late Cenozoic and Quaternary fault geometries, seismicity lineaments, and focal mechanisms provide evidence that this rotation is accommodated by north-directed thrusting and strike-slip faulting in Washington, and SW- to W-directed normal faulting and strike-slip faulting to the east.
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
