Sponsor
Portland State University. Department of Earth Sciences
First Advisor
Ansel G. Johnson
Term of Graduation
Fall 1980
Date of Publication
10-14-1980
Document Type
Thesis
Degree Name
Master of Science (M.S.) in Geology
Department
Earth Science
Language
English
Subjects
Geophysical surveys -- Oregon -- Portland Metropolitan Area, Stratigraphic geology
DOI
10.15760/etd.3190
Physical Description
1 online resource (3, viii, 106 pages)
Abstract
The geologic setting of the Portland Basin is ideal for gravity surveys because of the large density contrasts between geologic units. The Portland Basin consists of a north-northwest-trending syncline in the Columbia River basalt overlain by Pliocene to Recent alluvium. This study was undertaken to define structures in the Portland Basin which are obscured by the alluvium.
An areal gravity survey of the Portland Basin covering approximately 450 square kilometers was conducted for this study.
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
http://archives.pdx.edu/ds/psu/18438
Recommended Citation
Perttu, Janice C., "An Analysis of Gravity Surveys in the Portland Basin, Oregon" (1980). Dissertations and Theses. Paper 3199.
https://doi.org/10.15760/etd.3190
Plate 1. Complete Bouguer Gravity Anomaly Map of the Portland Basin
perttu2.pdf (1530 kB)
Plate 2. Residual Complete Bouguer Gravity Anomaly Map of the Portland Basin
Comments
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