National Geologic Map Database
General Information
- Title: Chemical and mineralogic aspects of observed fractionation of ash from the May 18, 1980 eruption of Mount St. Helens
- Author(s): Hinkley, T.K., Smith, K.S., Taggart, J.E., and Brown, J.T.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Professional Paper 1397-A
- Larger Work: Chemistry of ash and leachates from the May 18, 1980 eruption of Mount St. Helens, Washington
- Publication Date: 1987
- Map Scale: 1:5,000,000
- Cross Section: None
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