10.5880/fidgeo.2025.024 Willingshofer, Ernst Ernst Willingshofer 0000-0002-9119-5557 Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany GFZ Data Services 2025 EPOS multi-scale laboratories analogue models of geologic processes property data of analogue modelling materials Cohesion deformation > shearing fault Friction coefficient Ring-shear tester Sand > Quartz Sand Willingshofer, Ernst Ernst Willingshofer 0000-0002-9119-5557 Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands Willingshofer, Ernst Ernst Willingshofer 0000-0002-9119-5557 Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany HelTec - Helmholtz Laboratory for Tectonic Modelling (GFZ German Research Centre for Geosciences, Germany) 9ba34c109b827b177aab36e0266b1643 GFZ Helmholtz Centre for Geosciences, Potsdam, Germany TecLab - Tectonic Modelling Laboratory (Utrecht University, The Netherlands) aa45f98e5c098237d0c57b58e5f953e1 Utrecht University, Utrecht, The Netherlands Rosenau GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Dataset 10.1016/j.tecto.2016.01.017 10.5880/GFZ.4.1.2021.001 10.1016/j.jsg.2015.03.008 10.1002/ceat.200303112 10.1007/978-3-540-73768-1 CC BY 4.0 This dataset provides friction data from ring-shear tests on quartz sand SIBELCO S80 used in analogue modelling of tectonic processes as a rock analogue for the earth’s upper crust (e.g., Klinkmüller et al., 2016).

According to our analysis the material shows a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak, dynamic and reactivation friction coefficients of quartz sand S80 are µP = 0.75, µD = 0.59, and µR = 0.69, respectively (Table 5). Cohesion of the material ranges between 0-80 Pa. The material shows no rate-dependency (<1% per ten-fold change in shear velocity v).

The tested bulk material consists of quartz sand SIBELCO S80 with grain size of ~0.63-355 µm (D50 = 175 µm. Bulk and grain densities are 1300 kg/m³ and 2650 kg/m³, respectively and the hardness is 7 on Moh’s scale. S80 is sold e.g., by the company SIBELCO (sibelco.com).