European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 37, issue 5
Articles | Volume 37, issue 5
https://doi.org/10.5194/ejm-37-639-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-37-639-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 5
Research article
 | 
01 Oct 2025
Research article |  | 01 Oct 2025

Origin and evolution of the Variscan Léon eclogites: insights from zircon and garnet petrochronology

Lorraine Tual, Christine Authemayou, Caroline Lotout, Matthijs A. Smit, Kira Musiyachenko, Denise Bussien Grosjean, Ellen Kooijman, and Emilie Bruand

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Latest update: 04 Jun 2026
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Short summary
The Léon region in France offers a window into the dramatic geological processes that shaped continents. Studying ancient rocks called eclogite, we uncovered a history of magma generation, deep burial and rapid crustal movement between 390 million and 300 million years ago. The area was shaped by subduction dynamics, where shifting tectonic plates stretched and compressed the crust. These findings help us understand how ancient geological processes continue to influence the Earth’s surface today.
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