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Filtering by: Creator Duncan, Sara R. Remove constraint Creator: Duncan, Sara R. Degree Field Geology Remove constraint Degree Field: Geology Degree Field Agricultural Business Management Remove constraint Degree Field: Agricultural Business Management

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  • The effects of the Mazama tephra-falls : a geoarchaeological approach

    Creator:
    Matz, Stephan E.
    Abstract:
    About 7,000 years ago two major tephra-falls blanketed the Pacific Northwest in volcanic ash. These two tephra-falls, identified as the Llao and climatic tephra-falls, were a part of the eruptive events that led up to the collapse of Mount Mazama to form Crater Lake in the southern Oregon Cascades. The...
    Resource Type:
    Masters Thesis
    Full Text:
    program. Dr. R. Lee Lyman provided me with financial support, valuable experience, and his always keen