Articles | Volume 3, issue 1
https://doi.org/10.5194/gchron-3-123-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-3-123-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Mar 2021
Research article |
| 09 Mar 2021
| 09 Mar 2021
U − Pb geochronology of epidote by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) as a tool for dating hydrothermal-vein formation
Veronica Peverelli
CORRESPONDING AUTHOR
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Tanya Ewing
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Daniela Rubatto
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Institute of Earth Sciences, University of Lausanne, Lausanne, 1015, Switzerland
Martin Wille
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Alfons Berger
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Igor Maria Villa
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Dipartimento di Scienze dell'Ambiente e della Terra, University of
Milano-Bicocca, Milan, 20126, Italy
Pierre Lanari
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Thomas Pettke
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Marco Herwegh
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
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Short summary
This work presents LA-ICP-MS U–Pb geochronology of epidote in hydrothermal veins. The challenges of epidote dating are addressed, and a protocol is proposed allowing us to obtain epidote U–Pb ages with a precision as good as 5 % in addition to the initial Pb isotopic composition of the epidote-forming fluid. Epidote demonstrates its potential to be used as a U–Pb geochronometer and as a fluid tracer, allowing us to reconstruct the timing of hydrothermal activity and the origin of the fluid(s).
This work presents LA-ICP-MS U–Pb geochronology of epidote in hydrothermal veins. The challenges...
