10.5880/fidgeo.2019.025 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 2020-09-26 urn:ogc:def:crs:EPSG:4326 Ring shear test data of quartz sand and colored quartz sand used for analogue modelling in the Laboratorio de modelización analógica, Universidad de Zaragoza, Spain (EPOS TNA call 2017). 2020-09-26 revision doi:10.5880/fidgeo.2019.025 Román-Berdiel, Teresa Departamento de Ciencias de la Tierra, Universidad de Zaragoza author Casas, Antonio M. Departamento de Ciencias de la Tierra, Universidad de Zaragoza author Pueyo, Emilio Luis Instituto Geológico y Minero de España author Peiro Chamarro, Alba Departamento de Ciencias de la Tierra, Universidad de Zaragoza author Soto, Ruth Instituto Geológico y Minero de España author Pohlenz, Andre GFZ German Research Centre for Geosciences, Potsdam, Germany author Warsitzka, Michael GFZ German Research Centre for Geosciences, Potsdam, Germany author Rosenau, Matthias GFZ German Research Centre for Geosciences, Potsdam, Germany author Laboratorio de Modelizaci\u00f3n Anal\u00f3gica (Universidad de Zaragoza-IGME Universidad de Zaragoza-IGME, Zaragoza, Spain originator HelTec - Helmholtz Laboratory for Tectonic Modelling (GFZ German Research Centre for Geosciences, Germany) GFZ German Research Centre for Geosciences, Potsdam, Germany originator GFZ Data Services publisher This dataset provides friction data from ring-shear tests (RST) on different types of quartz sand used in the Laboratorio de modelización analógica of the Universidad de Zaragoza (UZ, Spain) as an analogue for brittle layers in the crust or lithosphere (Izquierdo-Llavall & Casas-Sainz, 2012; Calvín et al., 2013; Pueyo Anchuela et al., 2016; Peiro et al., 2018; Pueyo et al., 2018; Izquierdo-Llavall et al., submitted). The materials (quartz sand, green coloured quartz sand mixture, black coloured quartz sand) have been characterized by means of internal friction coefficients µ and cohesions 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. Friction coefficients of the pure quartz sand and the green quartz sand mixture are similar (µP = 0.74 – 0.76, µD = 0.56 – 0.60, µR = 0.61 – 0.64), whereas friction coefficients of the black coloured quartz sand are lower (µP = 0.48, µD = 0.39, µR = 0.45). Cohesions of all sands range between 40 and 150 Pa. A minor rate-weakening of ~1 % per ten-fold change in shear velocity v is evident. The tested materials are quartz sands with a grain size of 0.063 – 0.4 mm and bulk densities of ρ = 1610-1800 kg m^-3. The data presented here are derived by ring shear testing using a SCHULZE RST-01.pc (Schulze, 1994, 2003, 2008) at the Helmholtz Laboratory for Tectonic Modelling (HelTec) of the GFZ German Research Centre for Geosciences in Potsdam. The RST is specially designed to measure friction coefficients µ and cohesions C in loose granular material accurately at low confining pressures and shear velocities similar to sandbox experiments. Complete 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 thrust fault wrench fault EPOS WP16 Analogue Geologic Structure publication Force sensor EPOS WP16 Analogue Monitoring publication Ring-shear tester EPOS WP16 Analogue Apparatus publication Sand > Quartz Sand EPOS WP16 Analogue Material publication tectonic and structural features EPOS WP16 Analogue Geologic Feature publication CC BY 4.0 CC BY 4.0 http://hdl.handle.net/10272/7176 URL Cites 10.1016/j.tecto.2016.01.017 DOI Cites http://www.ub.edu/geomod2018/Program_files/Abstracts_book_v1.0_LR.pdf URL Cites https://dialnet.unirioja.es/servlet/articulo?codigo=5779639 URL Cites https://meetingorganizer.copernicus.org/EGU2018/EGU2018-10534-2.pdf URL Cites 10.1002/2016JB012915 DOI Cites 10.1016/j.jsg.2015.03.008 DOI Cites 10.1002/ceat.200303112 DOI Cites https://www.springer.com/de/book/9783540737674 URL Cites eng geoscientificInformation http://doi.org/10.5880/fidgeo.2019.025 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information