Advisor

Ansel G. Johnson

Date of Award

1987

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Geology

Department

Geology

Physical Description

1 online resource (90 p.)

Subjects

Geology -- Oregon -- Tualatin River Valley, Faults (Geology) -- Oregon -- Tualatin River Valley, Seismic refraction method

DOI

10.15760/etd.5607

Abstract

The Tualatin Valley is a well defined elliptical basin centered at Hillsboro, with a major axis trending roughly N65°W. The valley is bordered on the northeast by the Tualatin Mountains (Portland Hills) which are a faulted, northwest-trending asymmetrical anticline. Topographic and geophysical evidence have defined the Portland Hills fault, which occurs along the northeast side of the Tualatin Mountains. The possibility that a fault or fault zone occurs along the southwest side of the Tualatin Mountains was investigated in this study.

Description

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Persistent Identifier

http://archives.pdx.edu/ds/psu/20968

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