6533b823fe1ef96bd127f733
RESEARCH PRODUCT
Anomalous Behavior of Zirconium and Hafnium in Volcanic Fumarolic Fluids
P. CensiP. ZuddasA. CaracausiF. SortinoM. CangemiD. PiazzeseV. CensiE. Falconesubject
GeophysicsGeneral Earth and Planetary SciencesZr/Hf ratio volcanic fumarolesSettore CHIM/01 - Chimica AnaliticaSettore GEO/08 - Geochimica E Vulcanologiadescription
The Zirconium and Hafnium concentrations in worldwide fumaroles fed by magmatic fluids reveal that the Zr/Hf ratio is inversely related to the temperature of emission. Lower Zr/Hf ratio values below the chondritic signature are found in fluids having the highest temperature while super-chondritic Zr/Hf ratio values are found in lower temperatures. Sub-chondritic values of the Zr/Hf ratio may be related to larger volatility of Hf-chloride gas species with respect to Zr-Cl gas species, while super-chondritic ratios may correspond to fluid-rock processes resulting from cooling of uprising magmatic fluids. We propose that subchondritic Zr/Hf ratio values in fumaroles associated with high temperature may be an appropriate marker of fast magmatic rising representing a new sensitive tool for volcanic risks strategies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-01-06 | Geophysical Research Letters |