Ring-shear test data of glass beads <50 µm used for analogue experiments in the 
tectonic modelling labs at GFZ Potsdam and the Institute of Geophysics of the 
Czech Academy of Sciences, Prague

Rudolf, M.; Rosenau, M.; Warsitzka, Michael; Zavada, Prokop

doi:10.5880/GFZ.4.1.2022.003

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Ring-shear test data of glass beads <50 µm used for analogue experiments in the tectonic modelling labs at GFZ Potsdam and the Institute of Geophysics of the Czech Academy of Sciences, Prague

Urheber*innen

/persons/resource/mrudolf

Rudolf, M.
4.1 Lithosphere Dynamics, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/rosen

Rosenau, M.
4.1 Lithosphere Dynamics, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Warsitzka, Michael
External Organizations;

Zavada, Prokop
External Organizations;

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Zitation

Rudolf, M., Rosenau, M., Warsitzka, M., Zavada, P. (2022): Ring-shear test data of glass beads <50 µm used for analogue experiments in the tectonic modelling labs at GFZ Potsdam and the Institute of Geophysics of the Czech Academy of Sciences, Prague.
https://doi.org/10.5880/GFZ.4.1.2022.003

Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5014531

Zusammenfassung

This dataset provides friction data from ring-shear tests on glass beads with a diameter of less than 50 µm used in analogue modelling of tectonic processes as a rock analogue for “weak” layers in the earth’s upper crust (e.g. Klinkmüller et al., 2016; Ritter et al., 2016; Lohrmann et al., 2003) or as “seismogenic” crust (Rudolf et al., 2022). The glass beads are characterized by means of internal friction coefficients µ and cohesion C. According to our analysis the materials show a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak, dynamic and reactivation friction coefficients of the glass beads are µP = 0.47 , µD = 0.44, and µR = 0.47, respectively (Table 5). Cohesion of the material ranges between 50 Pa and 70 Pa. The material shows a neglectable rate-weakening of <1% per ten-fold change in shear velocity v.