Portland State University. Department of Earth Sciences
Robert O. Van Atta
Date of Publication
Master of Science (M.S.) in Geology
Geochronology, Columbia County Oregon, Geologic Maps, Stratigraphy
1 online resource (104 p.)
The Cowlitz Formation in southern Columbia and Clatsop counties, northwest Oregon was studied in order to prepare a geologic map of parts of this formation and to determine the character of its lithofacies and the environments of deposition.
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Timmons, Dale M., "Stratigraphy, lithofacies and depositional environment of the Cowlitz Formation, T. 4 and 5N., R. 5W. Northwest Oregon" (1981). Dissertations and Theses. Paper 3128.