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Filtering by: Subject Temperature -- Oregon -- Crater Lake Remove constraint Subject: Temperature -- Oregon -- Crater Lake Degree Field Geology Remove constraint Degree Field: Geology Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • A new model for the formation of Crater Lake Caldera, Oregon

    Creator:
    Lidstrom, John Walter
    Abstract:
    During the Pleistocene, an andesitic volcano named Mount Mazama grew to a probable elevation of 3000 meters in south- central Oregon. Near the end of the Pleistocene, three diverse magma types appeared in the eruptive products associated with Mount Mazama: l)High-alumina basaltic andesite magma associated with an early plateau and...
    Resource Type:
    Dissertation