Ring shearspan> test data of glass beads 70-110 µm used for analogue experiments in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam

Pohlenz, Andre; Rudolf, Michael; Kemnitz, Helga; Rosenau, Matthias;

2020-08 || GFZ Data Services

This dataset provides friction data from ring-shear tests (RST) on glass beads used in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam as an analogue for “weak” brittle layers in the crust or lithosphere (Ritter et al., 2016; Santimano et al., 2015; Contardo et al., 2011; Reiter et al., 2011; Hoth et al., 2007, 2006; Kenkmann et al., 2007; Deng et al., 2018) or in stick-slip experiments (Rudolf et al., 2019). The glass beads with a diameter of 70-110 µm 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 material shows a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak, dynamic and reactivation friction coefficients of the glass beads are µP = 0.48, µD = 0.39 and µR = 0.44, respectively. Cohesion ranges between 3 and 28 Pa. A rate-weakening of ~4 % per ten-fold change in shear velocity v is evident.

Originally assigned keywords

Corresponding MSL vocabulary keywords

MSL enriched keywords

Originally assigned sub domains
  • analogue modelling of geologic processes
MSL enriched sub domains
  • rock and melt physics
  • analogue modelling of geologic processes
Source http://doi.org/10.5880/GFZ.4.1.2020.007
Source publisher GFZ Data Services
DOI 10.5880/GFZ.4.1.2020.007
License CC BY 4.0
Authors
  • Pohlenz, Andre
  • GFZ German Research Centre for Geosciences, Potsdam, Germany

  • Rudolf, Michael
  • 0000-0002-5077-5221
  • GFZ German Research Centre for Geosciences, Potsdam, Germany

  • Kemnitz, Helga
  • GFZ German Research Centre for Geosciences, Potsdam, Germany

  • Rosenau, Matthias
  • 0000-0003-1134-5381
  • GFZ German Research Centre for Geosciences, Potsdam, Germany
References
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Contact
  • Rosenau, Matthias
  • GFZ German Research Centre for Geosciences, Potsdam, Germany
  • rosen@gfz-potsdam.de
Citation Pohlenz, A., Rudolf, M., Kemnitz, H., & Rosenau, M. (2020). Ring shear test data of glass beads 70-110 µm used for analogue experiments in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.4.1.2020.007