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Filtering by: Alternative title ssim Mount St. Helens volcano : recent and future behavior Remove constraint Alternative title ssim: Mount St. Helens volcano : recent and future behavior Advisor Brauner, David R. Remove constraint Advisor: Brauner, David R. Subject Antiquities, Prehistoric -- Washington (State) Remove constraint Subject: Antiquities, Prehistoric -- Washington (State)

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  • Origin of the Tucannon phase in Lower Snake River prehistory

    Creator:
    Lucas, Steven W.
    Abstract:
    Approximately 5,500 years ago a discreet period of wetter and cooler environmental conditions prevailed across the southern Columbia Plateau. This period was marked by the first prominent episodes of erosion to occur along the lower Snake River following the height of the Altithermal and eruption of Mt. Mazama during the...
    Resource Type:
    Masters Thesis
    Full Text:
    and Rice 5 1970), which was later reported as inaccurate (Kennedy 1976). Recent work in the