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Filtering by: Subject Crater Lake (Or.) -- History Remove constraint Subject: Crater Lake (Or.) -- History Committee Member Field, C. W. Remove constraint Committee Member: Field, C. W. Decade 1970-1979 Remove constraint Decade: 1970-1979

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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