National Geologic Map Database
General Information
- Title: Maps showing distribution, thickness, and mass of Late Pleistocene and Holocene tephra from major volcanoes in the Pacific northwest of the United States: a preliminary assessment of hazards from volcanic ejecta to nuclear reactors in the Pacific Northwest
- Author(s): Shipley, Susan, and Sarna-Wojcicki, A.M.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Miscellaneous Field Studies Map MF-1435
- Publication Date: 1983
- Map Scale: 1:2,500,000
- Cross Section: None
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