In experiments designed to understand deep shear zones, we show that periodic porous sheets emerge spontaneously during viscous creep and that they facilitate mass transfer. These findings challenge conventional expectations of how viscosity in solid rocks operates and provide quantitative data in favour of an alternative paradigm, that of the dynamic granular fluid pump model. On this basis, we argue that our results warrant a reappraisal of the community's perception of how viscous deformation in rocks proceeds with time and suggest that the general model for deep shear zones should be updated to include creep cavitation. Through our discussion we highlight how the integration of creep cavitation, and its Generalised Thermodynamic paradigm, would be consequential for a range of important solid Earth topics that involve viscosity in Earth materials like, for example, slow earthquakes.

中文翻译：

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实验证据表明粘性剪切带会产生周期性的孔隙

在旨在理解深剪切带的实验中，我们显示出周期性的多孔板在粘性蠕变过程中自发出现，并且它们促进了质量传递。这些发现挑战了人们对固体岩石粘度如何运行的传统预期，并提供了定量数据，以支持动态粒状流体泵模型的替代范例。在此基础上，我们认为我们的结果值得重新评估社区对岩石中粘性变形随时间的变化的认识，并建议应更新深剪切带的一般模型以包括蠕变空化。通过我们的讨论，我们强调了蠕变空化及其广义热力学范式的集成，