Sponsor
Portland State University. Department of Earth Sciences
First Advisor
Robert O. Van Atta
Date of Publication
5-26-1977
Document Type
Thesis
Degree Name
Master of Science (M.S.) in Geology
Department
Earth Science
Language
English
Subjects
Silt -- Oregon -- Tualatin Mountain region, Petrology -- Oregon
DOI
10.15760/etd.2452
Physical Description
1 online resource. Digitized typescript, Illustrations, maps.
Abstract
Topics in geology, which inevitably excite professional discussion and even tempered debate, often present challenging targets for the exploratory jabs of Master's degree candidates. The Portland Hills Silt and the controversy concerning its genesis provides just such an object.
Although the physical descriptions of the silt are generally in agreement, they remain somewhat generalized and, at present, no single definition is generally accepted. Moreover, incongruities concerning structural and textural details--notably, the presence of minor stratification and/or scattered pebbles in the silt--have resulted in considerable disagreement regarding its mode of origin.
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/15873
Recommended Citation
Lentz, Rodney Thomas, "The Petrology and Stratigraphy of the Portland Hills Silt" (1977). Dissertations and Theses. Paper 2468.
https://doi.org/10.15760/etd.2452
Surficial Geology of the Tualatin Mountain Region, Oregon
Comments
Figures 31-35 are located at the end of thesis. Map listed as in pocket now an additional file.