Articles | Volume 16, issue 10
https://doi.org/10.5194/se-16-1181-2025
https://doi.org/10.5194/se-16-1181-2025
Research article
 | 
27 Oct 2025
Research article |  | 27 Oct 2025

Dissolution–precipitation creep in polymineralic granitoid shear zones in experiments – Part 1: Strain localization mechanisms

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

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Short summary
Rheology of polymineralic rocks is crucial to unravel the strain and stress distribution in Earth’s middle crust, with implications for seismicity or geothermal systems. Our experimental study of the viscous rheology of natural, fine-grained granitoid rocks shows that dissolution–precipitation creep and pinning are active in extremely weak narrow zones. Due to the polymineralic character, strain localizes with and without a precursory fracture in zones weaker than monomineralic quartz.
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