Soil radon and elemental mercury distribution and relation to magmatic resurgence at Long Valley Caldera

Stanley N. Williams

doi:10.1126/science.229.4713.551

Soil radon and elemental mercury distribution and relation to magmatic resurgence at Long Valley Caldera

Stanley N. Williams

Arizona State University

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

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)
Pages (from-to)	551-553
Number of pages	3
Journal	Science
Volume	229
Issue number	4713
DOIs	https://doi.org/10.1126/science.229.4713.551
State	Published - Jan 1 1985

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AB - 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.

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Soil radon and elemental mercury distribution and relation to magmatic resurgence at Long Valley Caldera

Abstract

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