Dataset

Rheology of PDMS-corundum sand mixtures from the Tectonic Modelling Lab of the University of Bern (CH)

Zwaan, Frank; Schreurs, Guido; Ritter, Malte; Santimano, Tasca; Rosenau, Matthias;

2018-10 || GFZ Data Services

This dataset provides rheometric data of silicone (Polydimethylsiloxane, PDMS SGM36)-corundum sand mixtures used for analogue modelling in Zwaan et al. (2016, 2017), Zwaan and Schreurs (2017) and in the Tectonic Modelling Lab of the Institute of Geological Sciences at the University of Bern (CH). The PDMS is produced by Dow Corning and its characteristics have been described by e.g. Rudolf et al. (2016a,b). The corundum sand (Normalkorund Braun 95.5% F120 by Carlo Bernasconi AG: https://www.carloag.ch/shop/catalog/product/view/id/643), has a grainsize of 0.088-0.125 mm and a specific density of 3.96 g cm^-3. Further rheological characteristics are described by Panien et al. (2006). The density of the tested materials ranges between 1 (pure PDMS) and 1.6 g cm^-3 (increasing corundum sand content in mixture). The material samples have been analysed in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at GFZ German Research Centre for Geosciences in Potsdam using an Anton Paar Physica MCR 301 rheometer in a plate-plate configuration at room temperature. Rotational (controlled shear rate) tests with shear rates varying from 10^-4 to 10^-1 s^-1 were performed.

According to our rheometric analysis, the material is quasi Newtonian at strain rates below 10^-3*s^-1 and weakly shear rate thinning above. Viscosity and stress exponent increase systematically with density from ~4*10^4 to ~1*10^5 Pa*s and from 1.06 to 1.10, respectively. A first application of the materials tested can be found in Zwaan et al. (2016). Detailed information about the data, methodology and a list of files and formats is given in the "data description" and "list of files" that are included in the zip folder and also available via the DOI landing page.

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://dx.doi.org/doi:10.5880/fidgeo.2018.023
Source publisher	GFZ Data Services
DOI	10.5880/fidgeo.2018.023
License	CC BY 4.0
Authors	Zwaan, Frank 0000-0001-8226-2132 Institut für Geologie, Universität Bern, Switzerland Schreurs, Guido 0000-0003-1212-4978 Institut für Geologie, Universität Bern, Switzerland Ritter, Malte 0000-0003-1212-4978 GFZ German Research Centre for Geosciences, Potsdam, Germany Santimano, Tasca 0000-0002-8080-9154 GFZ German Research Centre for Geosciences, Potsdam, Germany Rosenau, Matthias 0000-0003-1134-5381 GFZ German Research Centre for Geosciences, Potsdam, Germany
References	Zwaan, F., Schreurs, G., Naliboff, J., & Buiter, S. J. H. (2016). Insights into the effects of oblique extension on continental rift interaction from 3D analogue and numerical models. Tectonophysics, 693, 239–260. https://doi.org/10.1016/j.tecto.2016.02.036 10.1016/j.tecto.2016.02.036 IsSupplementTo Zwaan, F., & Schreurs, G. (2017). How oblique extension and structural inheritance influence rift segment interaction: Insights from 4D analog models. Interpretation, 5(1), SD119–SD138. https://doi.org/10.1190/int-2016-0063.1 10.1190/INT-2016-0063.1 IsSupplementTo Zwaan, F., Schreurs, G., & Adam, J. (2018). Effects of sedimentation on rift segment evolution and rift interaction in orthogonal and oblique extensional settings: Insights from analogue models analysed with 4D X-ray computed tomography and digital volume correlation techniques. Global and Planetary Change, 171, 110–133. https://doi.org/10.1016/j.gloplacha.2017.11.002 10.1016/j.gloplacha.2017.11.002 IsSupplementTo References Panien, M., Schreurs, G., & Pfiffner, A. (2006). Mechanical behaviour of granular materials used in analogue modelling: insights from grain characterisation, ring-shear tests and analogue experiments. Journal of Structural Geology, 28(9), 1710–1724. https://doi.org/10.1016/j.jsg.2006.05.004 10.1016/j.jsg.2006.05.004 References Rudolf, M., Boutelier, D., Rosenau, M., Schreurs, G., & Oncken, O. (2016). Rheological benchmark of silicone oils used for analog modeling of short- and long-term lithospheric deformation. Tectonophysics, 684, 12–22. https://doi.org/10.1016/j.tecto.2015.11.028 10.1016/j.tecto.2015.11.028 References Rudolf, M., Boutelier, D., Rosenau, M., Schreurs, G., & Oncken, O. (2016). Supplement to: Rheological benchmark of silicone oils used for analog modeling of short- and long-term lithospheric deformation [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.4.1.2016.001 10.5880/GFZ.4.1.2016.001 References
Contact	Rosenau, Matthias GFZ German Research Centre for Geosciences, Potsdam, Germany rosen@gfz-potsdam.de
Citation	Zwaan, F., Schreurs, G., Ritter, M., Santimano, T., & Rosenau, M. (2018). Rheology of PDMS-corundum sand mixtures from the Tectonic Modelling Lab of the University of Bern (CH) [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2018.023