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Science 13 June 1980:
Vol. 208. no. 4449, pp. 1258 - 1259
DOI: 10.1126/science.208.4449.1258
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Articles

Mount St. Helens, Washington, 1980 Volcanic Eruption: Magmatic Gas Component During the First 16 Days

RICHARD E. STOIBER 1, STANLEY N. WILLIAMS 1, and LAWRENCE L. MALINCONICO 1

1 Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755

Eruption plumes of Mount St. Helens, Washington, showed low rates of sulfur dioxide emission, and ash leachates had low ratios of sulfur to chlorine. These data and the nonvesicularity of ash fragments are indicative of only a small eruptive magmatic component. The low amounts of soluble fluorine on the ashes pose no health problems. Violent magmatic activity is possible, and thus continued geochemical monitoring is advised.

Submitted on April 21, 1980
Revised on May 14, 1980


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Eruption of the Nevado del Ruiz Volcano, Colombia, on 13 November 1985: Gas Flux and Fluid Geochemistry.
S. N. Williams, S. N. WILLIAMS, D. R. LOWE, R. E. STOIBER, J. B. GEMMELL, C. B. CONNOR, N. G. P., and A. L. C. (1986)
Science 233, 964-967
   Abstract »    PDF »
Chemical Changes of Lakes Within the Mount St. Helens Blast Zone.
R. C. Wissmar, R. C. WISSMAR, A. H. DEVOL, A. E. NEVISSI, and J. R. SEDELL (1982)
Science 216, 175-178
   Abstract »    PDF »
Fluoride Distribution and Biological Availability in the Fallout from Mount St. Helens, 18 to 21 May 1980.
D. R. Taves and D. R. TAVES (1980)
Science 210, 1352-1354
   Abstract »    PDF »


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