Portland State University PDXScholar Dissertations and Theses Dissertations and Theses 5-24-1994 Magmatic Evolution and Eruptive History of the Granitic Bumping Lake Pluton, Washington: Source of the Bumping River and Cash Prairie Tuffs John Frederick King Portland State University Follow this and additional works at: https://pdxscholar.library.pdx.edu/open_access_etds Part of the Geology Commons Let us know how access to this document benefits ou.y Recommended Citation King, John Frederick, "Magmatic Evolution and Eruptive History of the Granitic Bumping Lake Pluton, Washington: Source of the Bumping River and Cash Prairie Tuffs" (1994). Dissertations and Theses. Paper 4765. https://doi.org/10.15760/etd.6649 This Thesis is brought to you for free and open access. It has been accepted for inclusion in Dissertations and Theses by an authorized administrator of PDXScholar. Please contact us if we can make this document more accessible:
[email protected]. THESIS APPROVAL The abstract and thesis of John Frederick King for the Master of Science in Geology were presented May 24, 1994, and accepted by the thesis committee and the department. COMMITTEE APPROVALS: DEPARTMENT APPROVAL: ~arvin H. Beeson, Chair De::ent of Geology ************************************************ ACCEPTED FOR PORTLAND STATE UNIVERSITY BY THE LIBRARY b On ra?.4LL-<J_.= /99? ABSTRACT An abstract of the thesis of John Frederick King for the Master of Science in Geology presented May 24, 1994. Title: Magmatic Evolution and Eruptive History of the Granitic Bumping Lake Pluton, Washington: Source of the Bumping River and Cash Prairie Tuffs. The 25 Ma Bumping Lake pluton ranges in composition from quartz diorite to granite with the granitic facies comprising approximately 90% of the pluton's surface area.