Search Constraints

Start Over
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. Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

Search Results

  • 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