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false4DOIDB.FID 10.5880/fidgeo.2026.031 Sieberer, Anna-Katharina Anna-Katharina Sieberer 0009-0008-1735-8179 Universität Innsbruck, Inssbruck, Austria Willingshofer, Ernst Ernst Willingshofer 0000-0002-9119-5557 Utrecht University, Utrecht, The Netherlands Klotz, Thomas Thomas Klotz 0000-0001-6187-229X Universität Innsbruck, Inssbruck, Austria Ortner, Hugo Hugo Ortner 0000-0001-6909-6627 Universität Innsbruck, Inssbruck, Austria Pomelia, Hannah Hannah Pomelia 0000-0002-7695-4121 Universität Innsbruck, Inssbruck, Austria GFZ Data Services 2026 EPOS multi-scale laboratories analogue models of geologic processes analogue modelling results brittle tectonic inversion inherited structures structural inheritance European eastern Southern Alps top-view cross-section photographs analogue modelling physical analogue modelling results analogue experiment physical analogue experiments geometric inheritance pre-defined platform and basin configuration platform basin inherited basement structures brittle analogue models crustal-scale analogue models top-view photographs cross-sections basin inversion lateral strength variations mechanical inheritance surface uplift topographic evolution inherited structural heterogeneities inherited crustal structures eastern Southern Alps Dolomites Neoalpine Dinaric Jurassic Permian polyphase deformation Cenozoic Science Keywords > EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > CRUSTAL MOTION Science Keywords > EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > FAULT MOVEMENT Science Keywords > EARTH SCIENCE SERVICES > MODELS > GEOLOGIC/TECTONIC/PALEOCLIMATE MODELS Science Keywords > EARTH SCIENCE SERVICES > MODELS > PHYSICAL/LABORATORY MODELS Sieberer, Anna-Katharina Anna-Katharina Sieberer 0009-0008-1735-8179 Universität Innsbruck, Inssbruck, Austria TecLab - Tectonic Modelling Laboratory (Utrecht University, The Netherlands) aa45f98e5c098237d0c57b58e5f953e1 Universität Innsbruck, Innsbruck, Austria Sieberer, Anna-Katharina Universität Innsbruck, Innsbruck, Austria 2021-07-01 Dataset 10.5194/se-14-647-2023 10.1093/gji/ggab120/6195529 10.1130/GSAB-48-1459 10.1016/j.tecto.2016.01.017 10.5334/jors.bl 10.1016/0031-9201(86)90021-X 10.5880/FIDGEO.2018.072 Creative Commons Attribution 4.0 International This image dataset contains results (original top-view and cross-section photographs) obtained from a series of 12 crustal-scale physical analogue modelling experiments performed in the Tectonic Modelling Laboratory (TecLab) at Utrecht University. We employed analogue modelling to study the inversion of extensional basins that are parallel and oblique to their boundaries. The key parameters of this study are: (i) the obliquity angle (0°, 10° or 20°) of shortening in relation to the strike of the initial rift structures; (ii) the basal décollement rheology; and (iii) the rheology of the basin fill.

All analogue experiments are rectangular, 2 cm thick and consist of deformable brittle or brittle–ductile layers. Deformable parts in entirely brittle models are made of a homogeneous layer of quartz sand for the initial, non-stretched, pre-rift model crust. The subsequently resulting grabens are filled with syn- to post-extensional sediments of quartz sand, feldspar sand, or glass beads. Variations to these setups entail either a brittle layer of glass beads at the base of the above described brittle crust, or, for brittle-ductile models, a viscous layer of PDMS silicone putty with fillers. All experiments are built on one fixed above two mobile plastic sheets, their transition is pre-defining velocity discontinuities (VDs). In a first stage, deformation is induced in all models by two electric motors pulling the two mobile plastic sheets in opposite directions parallel to the backstop. These sheets are then fixed once the extensional phase is finished. VDs positioned both orthogonally and obliquely with respect to the backstop allow graben structures to form at angles of 0°, 10° and 20° to the subsequent shortening direction. In a second stage, a rigid backstop moves into the model to create compressive deformation within the entirely brittle or brittle-ductile layers. Top-view photographs were taken at regular time intervals throughout each experiment (see below for details). Cross-section photographs were taken at the end of each experiment. Therefore, the top-view photographs enable surface deformation to be tracked and analysed through time and space, while the cross-sections demonstrate the overall vertical deformation of each model.

For more details about the models, see Sieberer et al. (2023). The properties of the materials used are described in Sieberer et al. (2023), Klinkmüller et al. (2016) and Willingshofer et al. (2018). All models are scaled according to the principles of geometric, rheological, and kinematic similarity between nature and models (Hubbert, 1937; Weijermars & Schmeling, 1986).
Geographic area related to the analogue modelling results (European eastern Southern Alps) 11.0288 14.2478 45.1645 46.8657 Austrian Science Fund P 33272 Thermo-tectonic evolution of the Dolomites Indenter