Dataset

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

Zwaan, Frank; Rudolf, Michael; Pohlenz, Andre; Corti, Giacomo; Keir, Derek; Sani, Federico;

2020-09 || GFZ Data Services

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).

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/fidgeo.2020.019
Source publisher	GFZ Data Services
DOI	10.5880/fidgeo.2020.019
License	CC BY 4.0
Authors	Zwaan, Frank 0000-0001-8226-2132 University of Florence, Florence, Italy Rudolf, Michael 0000-0002-5077-5221 GFZ German Research Centre for Geosciences, Potsdam, Germany Pohlenz, Andre GFZ German Research Centre for Geosciences, Potsdam, Germany Corti, Giacomo 0000-0001-7399-4438 CNR Italian National Research Council, Italy Keir, Derek 0000-0001-8787-8446 University of Southampton, Southampton, UK Sani, Federico 0000-0001-8832-1471 University of Florence, Florence, Italyrn
References	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 Montanari, D., Agostini, A., Bonini, M., Corti, G., & Ventisette, C. (2017). The Use of Empirical Methods for Testing Granular Materials in Analogue Modelling. Materials, 10(6), 635. https://doi.org/10.3390/ma10060635 10.3390/ma10060635 Cites Ritter, M. C., Leever, K., Rosenau, M., & Oncken, O. (2016). Scaling the sandbox—Mechanical (dis) similarities of granular materials and brittle rock. Journal of Geophysical Research: Solid Earth, 121(9), 6863–6879. Portico. https://doi.org/10.1002/2016jb012915 10.1002/2016JB012915 Cites 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 Warsitzka, M., Ge, Z., Schönebeck, J.-M., Pohlenz, A., & Kukowski, N. (2019). Ring-shear test data of foam glass beads used for analogue experiments in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam and the Institute of Geosciences, Friedrich Schiller University Jena [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.4.1.2019.002 10.5880/GFZ.4.1.2019.002 Cites Zwaan, F., Corti, G., Keir, D., & Sani, F. (2020). Analogue modelling of marginal flexure in Afar, East Africa: Implications for passive margin formation. Tectonophysics, 796, 228595. https://doi.org/10.1016/j.tecto.2020.228595 10.1016/j.tecto.2020.228595 IsSupplementTo Zwaan, F., Rudolf, M., Corti, G., Keir, D., & Sani, F. (2020). Rheology of viscous materials from the CNR-IGG Tectonic Modelling Laboratory at the University of Florence (Italy) [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2020.018 10.5880/fidgeo.2020.018 References Zwaan, F., Corti, G., Keir, D., & Sani, F. (2020). Images and videos of analogue centrifuge models exploring marginal flexure during rifting in Afar, East Africa [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2020.020 10.5880/fidgeo.2020.020 References
Contact	Zwaan, Frank University of Bern, Bern, Switzerland frank.zwaan@geo.unibe.ch, fzwaan@hotmail.com
Citation	Zwaan, F., Rudolf, M., Pohlenz, A., Corti, G., Keir, D., & Sani, F. (2020). Ring-shear test data of feldspar sand from the CNR-IGG Tectonic Modelling Laboratory at the University of Florence (Italy) [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2020.019