Youngest basalt in the Columbia River Basalt Group
View on map:46.414676°N 117.087328°W Comments
The basalt flow here is the Intracanyoun Flow of the Lower Monumental Member of the Columbia River Basalt Group. It is the youngest outpouring in the CRBG erupting 5.5 Ma. Stop 3 of Reidel et al.
Description
Columbia River Basalt Group
The Columbia River Basalt Group is a large igneous province that lies across parts of the Western United States. It is found in the U.S. states of Washington, Oregon, Idaho, Nevada, and California. The Basalt group includes the Steen and Picture Gorge basalt formations.
References
- http://en.wikipedia.org/wiki/Columbia River Basalt Group
- Page 140 - Reidel, S. P., et al., 2016, The Columbia River Basalt Group of western Idaho and eastern Washington - Dikes, vents, flows, and tectonics along the eastern margin of the flood basalt province: Geol. Soc. Am. Fied Trip 41, p. 127- 150.
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