10.5880/fidgeo.2022.032 eng dataset GFZ German Research Centre for Geosciences datapub@gfz-potsdam.de http://www.gfz-potsdam.de Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences pointOfContact 2022-12-16 urn:ogc:def:crs:EPSG:4326 Analysis of analogue models testing the influence of rheologically weak layers and basal fault kinematics on deformation in the overburden 2022-12-16 revision doi:10.5880/fidgeo.2022.032 Zwaan, Frank Institute of Geological Sciences, University of Bern, Bern, Switzerland author Schreurs, Guido Institute of Geological Sciences, University of Bern, Bern, Switzerland author Madritsch, Herfried National Cooperative for the Disposal of Radioactive Waste (Nagra), Wettingen, Switzerland author Herwegh, Marco Institute of Geological Sciences, University of Bern, Bern, Switzerland author Tectonic Modelling Laboratory at the Institute for Geological Sciences (TecLab Bern, Switzerland) Institute of Geological Sciences of the University of Bern, Switzerland originator GFZ Data Services publisher This data set includes overviews depicting the surface evolution (time-lapse photography, topography analysis, digital image correlation [DIC] analysis), as well as and progressive physical cross-section analysis of 18 laboratory experiments (analogue models) testing the influence of rheologically weak layers (i.e. layers with [a component of] viscous behaviour) and basal fault kinematics on deformation in the weak layer’s overburden. This model set-up was inspired by the geological situation in the Swiss Alpine Foreland. All experiments were performed at the Tectonic Modelling Laboratory of the University of Bern (UB). Detailed descriptions of the model set-up preparation and results, as well as the monitoring techniques can be found in Zwaan et al. (in review). Zwaan, Frank Institute of Geological Sciences, University of Bern, Bern, Switzerland; GFZ German Research Centre for Geosciences, Potsdam, Germany frank.zwaan@geo.unibe.ch pointOfContact Tectonics Fault Rheology Alps Northern Alpine Foreland Basin Analogue modelling EPOS European Plate Observing System analogue models of geologic processes multi-scale laboratories property data of analogue modelling materials analogue modelling results software tools EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > PLATE BOUNDARIES EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > STRAIN NASA/GCMD Earth Science Keywords publication CC BY 4.0 CC BY 4.0 10.1186/s00015-022-00427-8 DOI IsSupplementTo eng geoscientificInformation Area of interest inspired by the geological situation in the Swiss Alpine Foreland 6 10.1 46 48 http://doi.org/10.5880/fidgeo.2022.032 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information We use a model set-up involving a deformable base to simulate a basal fault that induces deformation in an overlying weak layer, which itself is overlain by a more competent overburden (Figs. 1, 2). The total thickness of these model materials is 6.5 cm. The deformable base consists of a mobile and a fixed base plate that are both 2 cm thick, with the contact between these two base plates representing a steep, 75˚ dipping fault plane (or velocity discontinuity: VD). Furthermore, each base plate is attached to a longitudinal sidewall. The initial space between these longitudinal sidewalls is 30 cm, and the length of the model set-up is ca. 80 cm. The mobile base plate, together with the sidewall attached to it, can move outward (y-axis), downward (z-axis) and right-laterally (x-axis) by means of computer-controlled motors. By combining these three motion directions, we simulate pure normal dip-slip, 45˚ oblique normal dip slip, or pure dextral strike-slip fault kinematics (Fig. 1b, e). Furthermore, higher faults slip rates than the reference 10.4 mm/h can be applied.