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http://hdl.handle.net/2122/16413
Authors: | Censi, Paolo* Zuddas, Pierpaolo* Caracausi, Antonio* Sortino, Francesco* Cangemi, Marianna* Piazzese, Daniela* Censi, Valentina* Falcone, Edda Elisa* |
Title: | Anomalous Behavior of Zirconium and Hafnium in Volcanic Fumarolic Fluids | Journal: | Geophysical Research Letters | Series/Report no.: | /49 (2022) | Publisher: | Wiley-AGU | Issue Date: | 2022 | DOI: | 10.1029/2021GL094674 | URL: | https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL094674 https://hal.science/hal-03826798/file/Censi%20et%20al.%202021%20Geoph.%20Res.%20Lett.pdf |
Abstract: | 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. |
Appears in Collections: | Article published / in press |
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Censi et al., 2021_GRL.pdf | accepted paper | 605.13 kB | Adobe PDF | View/Open |
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