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

Stanley N. Williams

Research output: Contribution to journalArticlepeer-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 languageEnglish (US)
Pages (from-to)551-553
Number of pages3
JournalScience
Volume229
Issue number4713
DOIs
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • General

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