Sponsor
Portland State University. Department of Geology
First Advisor
Marvin H. Beeson
Term of Graduation
Summer 1988
Date of Publication
6-29-1988
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 (3, viii, 87, [3 folded] pages)
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
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Persistent Identifier
https://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
Geologic Map of the Bonneville Dam Area
Comments
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