Ring-shear test data of feldspar sand from the CNR-IGG Tectonic Modelling Laboratory at the University of Florence (Italy)

This dataset provides internal data from ring-shear tests (RST) on a feldspar sand material that has been used in tectonic experiments by among others Montanari et al. (2017) and Zwaan et al. (2020) in the Tectonic Modelling Laboratory of CNR-IGG at the Earth Sciences Department of the University of Florence (Italy) as an analogue for brittle layers in the crust. The material has 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 for the Tectonic Modelling Laboratory of CNR-IGG at the Earth Sciences Department of the University of Florence (CNR-UF)

According to our analysis the material behaves as a Mohr-Coulomb material characterized by a linear failure envelope. Internal peak, dynamic and reactivation friction coefficients are μP= 0.72, μD= 0.67, and μR= 0.72 respectively. Internal cohesions C are in the range of 60 to 120 Pa. Note however that these values differ from those reported by Montanari et al. (2017), who used empirical methods to determine material properties and find a friction angle of ca. 57˚ (i.e. a friction coefficient of ca. 1.5).

Additional Info

Field Value
Source http://doi.org/doi:10.5880/fidgeo.2020.019
Author Zwaan, Frank (University of Florence, Florence, Italy), Rudolf, Michael (GFZ German Research Centre for Geosciences, Potsdam, Germany), Pohlenz, Andre (GFZ German Research Centre for Geosciences, Potsdam, Germany), Corti, Giacomo (CNR Italian National Research Council, Italy), Keir, Derek (University of Southampton, Southampton, UK), Sani, Federico (University of Florence, Florence, Italyrn)
Provided by other-lab
Citation Zwaan, Frank, Rudolf, Michael, Pohlenz, Andre, Corti, Giacomo, Keir, Derek, Sani, Federico (2020): GFZ Dataservices http://doi.org/doi:10.5880/fidgeo.2020.019
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Created at repository 2020-04-02
Dataset contact Zwaan, Frank ( University of Bern, Bern, Switzerland Postdoc Researcher frank.zwaan@geo.unibe.ch, fzwaan@hotmail.com http://www.geo2.unibe.ch/personen/team_ifg_detail_e.php?PID=50995604 informtion )
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Publication date 2020-09-08
Publisher http://www.gfz-potsdam.de
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