10.5880/fidgeo.2025.024 eng dataset GFZ German Research Centre for Geosciences datapub@gfz-potsdam.de http://www.gfz-potsdam.de Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences pointOfContact 2025-06-06 urn:ogc:def:crs:EPSG:4326 Ring-shear test data of quartz sand SIBELCO S80 used for analogue modelling in the Tectonic Laboratory (TecLab) at Utrecht University 2025-06-06 revision doi:10.5880/fidgeo.2025.024 Willingshofer, Ernst Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands author Rosenau, Matthias GFZ Helmholtz Centre for Geosciences, Potsdam, Germany author Rosenau, Matthias GFZ Helmholtz Centre for Geosciences, Potsdam, Germany originator HelTec - Helmholtz Laboratory for Tectonic Modelling (GFZ German Research Centre for Geosciences, Germany) GFZ Helmholtz Centre for Geosciences, Potsdam, Germany originator TecLab - Tectonic Modelling Laboratory (Utrecht University, The Netherlands) Utrecht University, Utrecht, The Netherlands originator GFZ Data Services publisher 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). Rosenau GFZ Helmholtz Centre for Geosciences, Potsdam, Germany Matthias rosen@potsdam.de http://https://www.gfz-potsdam.de/staff/matthias.rosenau informtion pointOfContact EPOS multi-scale laboratories analogue models of geologic processes property data of analogue modelling materials Cohesion Friction coefficient EPOS WP16 Analogue Measured Property publication deformation > shearing EPOS WP16 Analogue Process/Hazard publication fault EPOS WP16 Analogue Geologic Structure publication Ring-shear tester EPOS WP16 Analogue Apparatus publication Sand > Quartz Sand EPOS WP16 Analogue Material publication CC BY 4.0 CC BY 4.0 10.1016/j.tecto.2016.01.017 DOI Cites 10.5880/GFZ.4.1.2021.001 DOI Cites 10.1016/j.jsg.2015.03.008 DOI Cites 10.1002/ceat.200303112 DOI Cites 10.1007/978-3-540-73768-1 DOI Cites eng geoscientificInformation http://doi.org/10.5880/fidgeo.2025.024 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information