A geochemical study of the Eagle Creek Formation in the Columbia River Gorge, Oregon

Author

Rachel Ann Carlin, Portland State University

Sponsor

Portland State University. Department of Geology

First Advisor

Marvin H. Beeson

Date of Publication

1988

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Geology

Department

Geology

Language

English

Subjects

Geochemistry -- Columbia River Gorge (Or. and Wash.), Geology -- Columbia River Gorge (Or. and Wash.), Eagle Creek Formation (Or.)

DOI

10.15760/etd.5633

Physical Description

1 online resource (102 p.)

Abstract

The Early Miocene Eagle Creek Formation, a series of volcanic mudflows and debris flows, is exposed in the Columbia River Gorge about 64 kilometers east of Portland, Oregon. Eighty-seven samples were analyzed using instrumental neutron activation analysis for trace element concentrations. Eleven samples were analyzed by Dr. Peter Hooper at Washington State University using X-ray Fluorescence for major element chemistry. These data were used to determine that the Eagle Creek Formation compositionally ranges from andesite to dacite.

Rights

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Comments

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Persistent Identifier

http://archives.pdx.edu/ds/psu/21148

Recommended Citation

Carlin, Rachel Ann, "A geochemical study of the Eagle Creek Formation in the Columbia River Gorge, Oregon" (1988). Dissertations and Theses. Paper 3749.
https://doi.org/10.15760/etd.5633