Abstract
The response of a large geothermal system to magmatic resurgence was analyzed by a survey of soil gas radon and elemental mercury at 600 sites in the silicic Long Valley Caldera, California. The broad geochemical anomaly over the caldera has superimposed on it a small zone of pronounced radon enrichment and mercury depletion coincident with the surface projection of a postulated dike of rising magma. Soil gas geochemistry studies can complement traditional geophysical and geodetical methods in the evaluation of potential volcanic eruption hazards.
Original language | English (US) |
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Pages (from-to) | 551-553 |
Number of pages | 3 |
Journal | Science |
Volume | 229 |
Issue number | 4713 |
DOIs | |
State | Published - Jan 1 1985 |
ASJC Scopus subject areas
- General