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Data Publication
Ring-shear test data of garnet sand used for analogue modelling in the experimental tectonics laboratory at GFZ German Research Centre for Geosciences, Potsdam
Rosenau, Matthias | Pohlenz, Andre
GFZ Data Services
(2023)
This dataset provides friction data from ring-shear tests on garnet sand used in analogue modelling of tectonic processes as a rock analogue for “strong” or “high density” layers in 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 garnet sand are µP = 0.83, µD = 0.61, and µR = 0.73, respectively (Table 5). Cohesion of the material ranges between 20-120 Pa. The material shows a no significant rate-dependency. The data presented here are derived by ring shearspan> testing using a SCHULZE RST-01.pc (Schulze, 1994, 2003, 2008) at HelTec, the Laboratory for experimental tectonics at the Helmholtz Center Potsdam – GFZ German Research Centre for Geosciences in Potsdam, Germany. The RST is specially designed to measure friction coefficients µ and cohesions C in loose granular material accurately at low confining pressures (<20 kPa) and shear velocities (<1 mm/sec) similar to sandbox experiments. In this tester, a granular bulk material layer is sheared internally at constant normal stress σN and shear velocity v while shear force and lid displacement (corresponding to density and volume change ΔV) are measured continuously. For more details see Klinkmüller et al. (2016).
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Source publisher
GFZ Data Services
DOI
10.5880/GFZ.4.1.2023.010
Authors
Rosenau, Matthias
0000-0003-1134-5381
GFZ German Research Centre for Geosciences, Potsdam, Germany
Pohlenz, Andre
GFZ German Research Centre for Geosciences, Potsdam, Germany
References
DOI of paper when available
IsSupplementTo
Klinkmüller, M., Schreurs, G., Rosenau, M., & Kemnitz, H. (2016). Properties of granular analogue model materials: A community wide survey. Tectonophysics, 684, 23–38. https://doi.org/10.1016/j.tecto.2016.01.017
10.1016/j.tecto.2016.01.017
Cites
Rudolf, M., & Warsitzka, M. (2021). <i>RST Evaluation - Scripts for analysing shear experiments from the Schulze RST.pc01 ring shear tester</i>. GFZ Data Services. https://doi.org/10.5880/GFZ.4.1.2021.001
10.5880/GFZ.4.1.2021.001
Cites
Santimano, T., Rosenau, M., & Oncken, O. (2015). Intrinsic versus extrinsic variability of analogue sand-box experiments – Insights from statistical analysis of repeated accretionary sand wedge experiments. Journal of Structural Geology, 75, 80–100. https://doi.org/10.1016/j.jsg.2015.03.008
10.1016/j.jsg.2015.03.008
Cites
Schulze, D. (2003). Time‐ and Velocity‐Dependent Properties of Powders Effecting Slip‐Stick Oscillations. Chemical Engineering & Technology, 26(10), 1047–1051. Portico. https://doi.org/10.1002/ceat.200303112
10.1002/ceat.200303112
Cites
Powders and Bulk Solids. (2007). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-73768-1
10.1007/978-3-540-73768-1
Cites
Contact
Rosenau
rosen@potsdam.de
GFZ German Research Centre for Geosciences, Potsdam, Germany
Citiation
Rosenau, M., & Pohlenz, A. (2023). Ring-shear test data of garnet sand used for analogue modelling in the experimental tectonics laboratory at GFZ German Research Centre for Geosciences, Potsdam [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.4.1.2023.010