The stratigraphy of the Scappoose formation, the Astoria formation, and the Columbia River basalt group in northwestern Columbia County, Oregon
The study area is located in northwestern Columbia County, and covers an area of approximately 70 square kilometers. The purpose of the study was to investigate the possible correlation of the Scappoose and Astoria Formations and determine their stratigraphic relationship to the Columbia River Basal...
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| Format: | Others |
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PDXScholar
1986
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| Online Access: | https://pdxscholar.library.pdx.edu/open_access_etds/3632 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=4625&context=open_access_etds |