10.5880/fidgeo.2021.024 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 2021-11-03 urn:ogc:def:crs:EPSG:4326 Ring-shear test data of quartz sand – silicate cenospheres mixtures used for analogue experiments at the Institute of Geophysics of the Czech Academy of Science, Prague 2021-11-03 revision 2021-05-21 creation doi:10.5880/fidgeo.2021.024 Warsitzka, Michael Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic author Závada, Prokop Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic author Krýza, Ondřej Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic author Pohlenz, Andre GFZ German Research Centre for Geosciences, Potsdam, Germany author Rosenau, Matthias GFZ German Research Centre for Geosciences, Potsdam, Germany author Laboratory of the Institute of Geophysics (Czech Academy of Science, Czech Republic) Institute of Geophysics of the Czech Academy of Sciences, Prague, Czech Republic originator HelTec - Helmholtz Laboratory for Tectonic Modelling (GFZ Potsdam, Germany) GFZ German Research Centre for Geosciences, Potsdam, Germany originator GFZ Data Services publisher This dataset provides friction data from ring-shear tests (RST) for mixtures of quartz sand and sili-cate cenospheres, which are used for analog experiments in the laboratory of the Institute of Geo-physics of the Czech Academy of Science (IG CAS) (Warsitzka et al., 2021). The mixtures have been characterized by means of internal friction coefficients µ and cohesion C as a remote service by the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam. According to our analysis the materials show a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak friction coefficients µP of the tested materials range between 0.55 and 0.75, dynamic friction coefficients µD between 0.47 and 0.60 and reactivation friction coefficients µR be-tween 0.52 and 0.65. Cohesions of the materials vary between 20 and 120 Pa. The materials show a minor rate-weakening of <1.2% per ten-fold change in shear velocity v. Rosenau, Matthias GFZ German Research Centre for Geosciences, Potsdam, Germany Lab manager rosen@gfz-potsdam.de http://www.gfz-potsdam.de/en/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 > fracturing EPOS WP16 Analogue Process/Hazard publication earth interior setting > crust setting > continental-crustal setting > upper continental crustal setting EPOS WP16 Analogue Main Setting publication EARTH SCIENCE > SOLID EARTH > TECTONICS EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > CALIBRATION/VALIDATION NASA/GCMD Earth Science Keywords publication fault EPOS WP16 Analogue Geologic Structure publication Force sensor EPOS WP16 Analogue Monitoring publication Iron Powder Sand > Quartz Sand EPOS WP16 Analogue Material publication Ring-shear tester EPOS WP16 Analogue Apparatus publication tectonic and structural features EPOS WP16 Analogue Geologic Feature publication CC BY 4.0 CC BY 4.0 10.1016/j.tecto.2016.01.017 DOI Cites 10.1002/2016JB012915 DOI Cites 10.3389/feart.2018.00248 DOI Cites https://gitext.gfz-potsdam.de/analab-code/rst-evaluation/ URL Cites 10.1016/j.jsg.2015.03.008 DOI Cites 10.1002/ceat.200303112 DOI Cites 978-3-540-73767-4 ISBN Cites 10.5880/GFZ.4.1.2019.008 DOI Cites 10.5194/se-12-1987-2021 DOI IsSupplementTo eng geoscientificInformation http://doi.org/10.5880/fidgeo.2021.024 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information