Ring shear test data of glass beads 40-70 µm used for analogue experiments in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam

DOI

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 40-70 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 = 0.46, µD = 0.40 and µR = 0.44, respectively. Cohesion ranges between 33 and 42 Pa. A rate-weakening of ~3 % per ten-fold change in shear velocity v is evident.

Identifier
DOI https://doi.org/10.5880/GFZ.4.1.2020.006
Related Identifier https://doi.org/10.1016/j.tecto.2011.09.016
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Related Identifier https://doi.org/10.1002/2016JB012915
Related Identifier https://doi.org/10.3389/feart.2018.00248
Related Identifier https://gitext.gfz-potsdam.de/analab-code/rst-evaluation/
Related Identifier https://doi.org/10.1016/j.jsg.2015.03.008
Related Identifier https://doi.org/10.1002/ceat.200303112
Related Identifier https://doi.org/10.5880/GFZ.4.1.2019.002
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:6906
Provenance
Creator Pohlenz, Andre; Rudolf, Michael ORCID logo; Kemnitz, Helga; Rosenau, Matthias ORCID logo
Publisher GFZ Data Services
Contributor Pohlenz, Andre; Rudolf, Michael; Kemnitz, Helga; Rosenau, Matthias; HelTec - Helmholtz Laboratory for Tectonic Modelling (GFZ German Research Centre for Geosciences, Germany)
Publication Year 2020
Rights CC BY 4.0; http://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact Rosenau, Matthias (GFZ German Research Centre for Geosciences, Potsdam, Germany)
Representation
Resource Type Dataset
Discipline Geosciences