Contrasting compositions of the youngest Columbia River basalt flows in Union and Wallowa Counties, northeastern Oregon
Geological Society of America Bulletin
By: George W. Walker
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Abstract
Note: This paper is dedicated to Aaron and Elizabeth Waters on the occasion of Dr. Waters' retirement.
Several new chemical analyses of flows confined to a structural downwarp in northeastern Oregon indicate the first reported occurrence of Late-Yakima–type basalt in the region and the close stratigraphic association of Yakima–type and Late-Yakima–type flows, as well as andesite. The andesite is the most silicic flow rock yet found on the Columbia Plateau.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Contrasting compositions of the youngest Columbia River basalt flows in Union and Wallowa Counties, northeastern Oregon |
| Series title | Geological Society of America Bulletin |
| DOI | 10.1130/0016-7606(1973)84<425:CCOTYC>2.0.CO;2 |
| Volume | 84 |
| Issue | 2 |
| Year Published | 1973 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 5 p. |
| First page | 425 |
| Last page | 429 |
| Country | United States |
| State | Oregon |
| County | Union County, Wallowa County |
| Other Geospatial | Columbia River |
| Google Analytic Metrics | Metrics page |