Articles | Volume 36, issue 5
https://doi.org/10.5194/ejm-36-767-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-36-767-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Sep 2024
Research article |
| 12 Sep 2024
| 12 Sep 2024
High-pressure Ca metasomatism of metabasites (Mont Avic, Western Alps): insights into fluid–rock interaction during subduction
Kilian Lecacheur
CORRESPONDING AUTHOR
Chrono-environnement, UMR CNRS 6249, Université de Franche-Comté, 16 route de Gray, 25000 Besançon, France
Olivier Fabbri
Chrono-environnement, UMR CNRS 6249, Université de Franche-Comté, 16 route de Gray, 25000 Besançon, France
Francesca Piccoli
Institute of Geological Sciences, University of Bern, Baltzerstrasse 1 + 3, 3012 Bern, Switzerland
Pierre Lanari
Institute of Geological Sciences, University of Bern, Baltzerstrasse 1 + 3, 3012 Bern, Switzerland
Institute of Earth Sciences, University of Lausanne, Géopolis, 1005 Lausanne, Switzerland
Philippe Goncalves
Chrono-environnement, UMR CNRS 6249, Université de Franche-Comté, 16 route de Gray, 25000 Besançon, France
Henri Leclère
Chrono-environnement, UMR CNRS 6249, Université de Franche-Comté, 16 route de Gray, 25000 Besançon, France
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Short summary
In this study, we analyze a peculiar eclogite from the Western Alps, which not only recorded a classical subduction-to-exhumation path but revealed evidence of Ca-rich fluid–rock interaction. Chemical composition and modeling show that the rock experienced peak metamorphic conditions followed by Ca-rich pulsed fluid influx occurring consistently under high-pressure conditions. This research enhances our understanding of fluid–rock interactions in subduction settings.
In this study, we analyze a peculiar eclogite from the Western Alps, which not only recorded a...
