Radon in fumarolic gases from vulcano island (Sicily, Italy)

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Geothermics; (United States)

DOI:https://doi.org/10.1016/0375-6505(84)90052-X· OSTI ID:5047778

Cioni, R; Corazza, E; D'Amore, F

In this study, Radon-222 activity was measured sporadically in fumarolic gases from the island of Vulcano (Italy) between 1978 and 1980. Rn variations in the crater fumaroles (300/sup 0/C) were found to be correlated with microseismic activity; they also correlate positively with water and negatively with the S/C1 ratio. On the basis of a geochemical model, the fumarolic gases at Vulcano are assumed to be a mixture of deep magmatic gases and fluids from shallow aquifers. Rn is carried by these fluids (an average of 500 nCi per kg of fluid). Circulating water can strip Rn from the U-rich rocks on Vulcano. At present it is impossible to determine whether microseismicity is producing composition changes, or vice versa, or whether both are the consequence of a main volcano-tectonic event.

• Research Organization: Istituto di Geocronologia e Geochimica Isotopica, CNR, Via Cardinale Maffi 36, Pisa
• OSTI ID: 5047778
• Journal Information: Geothermics; (United States), Journal Name: Geothermics; (United States) Vol. 13:4; ISSN GTMCA
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150302* -- Geothermal Exploration & Exploration Technology-- Geochemical Techniques & Surveys
ALPHA DECAY RADIOISOTOPES
AQUIFERS
CHEMICAL COMPOSITION
CHEMISTRY
CHLORINE
DAYS LIVING RADIOISOTOPES
ELEMENTS
EUROPE
EVEN-EVEN NUCLEI
FLUIDS
FUMAROLES
FUMAROLIC FLUIDS
GASES
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOTHERMAL FLUIDS
GROUND WATER
HALOGENS
HEAVY NUCLEI
HYDROGEN COMPOUNDS
HYDROLOGY
ISLANDS
ISOTOPE RATIO
ISOTOPES
ITALY
MEASURING METHODS
MIGRATION
MINERAL RESOURCES
NATURAL RADIOACTIVITY
NONMETALS
NUCLEI
ORES
OXYGEN COMPOUNDS
RADIOACTIVITY
RADIOISOTOPES
RADON 222
RADON ISOTOPES
RESOURCES
SULFUR CONTENT
TECTONICS
URANIUM DEPOSITS
URANIUM ORES
VOLCANIC GASES
VOLCANOES
WATER
WESTERN EUROPE