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Articles | Volume 16, issue 10
Articles | Volume 16, issue 10
https://doi.org/10.5194/se-16-1205-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-16-1205-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 10
Research article
 | 
27 Oct 2025
Research article |  | 27 Oct 2025

Dissolution–precipitation creep in polymineralic granitoid shear zones in experiments – Part 2: Rheological parameters

Natalia Nevskaya, Alfons Berger, Holger Stünitz, Markus Ohl, Oliver Plümper, and Marco Herwegh

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Short summary
To date, there remains a deficiency in rheological parameters for polymineralic rocks to be used in models, e.g., for strain localization in the Earth's continental middle crust. We provide a first estimate on grain size and stress sensitivity of experimentally deformed natural fine-grained granitoid rocks. Extrapolation of these parameters predicts a switch in the weakest material as a function of grain size and deformation mechanism from coarse monomineralic quartz to fine polymineralic rocks.
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