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Metadata Files

Data Publication

Analysis of analogue models testing the influence of rheologically weak layers and basal fault kinematics on deformation in the overburden

Zwaan, Frank | Schreurs, Guido | Madritsch, Herfried | Herwegh, Marco

GFZ Data Services

(2022)

Descriptions

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).
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.

Keywords


Originally assigned keywords
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

Corresponding MSL vocabulary keywords
tectonic plate boundary
analogue modelling

MSL enriched keywords
tectonic plate boundary
Apparatus
analogue modelling
Software
digital image correlation (DIC)
tectonic deformation structure
tectonic fault
strike-slip fault

MSL enriched sub domains i

analogue modelling of geologic processes

Source

https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=7ec63079-495f-11ed-9732-32bb1430b4f7

Source publisher

GFZ Data Services


DOI

10.5880/fidgeo.2022.032


Creators

Zwaan, Frank

Institute of Geological Sciences, University of Bern, Bern, Switzerland | GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0001-8226-2132

Schreurs, Guido

Institute of Geological Sciences, University of Bern, Bern, Switzerland

ORCID:

https://orcid.org/0000-0002-4544-7514

Madritsch, Herfried

National Cooperative for the Disposal of Radioactive Waste (Nagra), Wettingen, Switzerland

Herwegh, Marco

Institute of Geological Sciences, University of Bern, Bern, Switzerland

ORCID:

https://orcid.org/0000-0001-7323-4199


Contributors

Zwaan, Frank

ContactPerson

Institute of Geological Sciences, University of Bern, Bern, Switzerland | GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0001-8226-2132

Zwaan, Frank

DataManager

Institute of Geological Sciences, University of Bern, Bern, Switzerland | GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0001-8226-2132

Zwaan, Frank

ProjectLeader

Institute of Geological Sciences, University of Bern, Bern, Switzerland | GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0001-8226-2132

Zwaan, Frank

ProjectMember

Institute of Geological Sciences, University of Bern, Bern, Switzerland | GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0001-8226-2132

Schreurs, Guido

ProjectManager

Institute of Geological Sciences, University of Bern, Bern, Switzerland

ORCID:

https://orcid.org/0000-0002-4544-7514

Schreurs, Guido

ProjectMember

Institute of Geological Sciences, University of Bern, Bern, Switzerland

ORCID:

https://orcid.org/0000-0002-4544-7514

Madritsch, Herfried

ProjectMember

National Cooperative for the Disposal of Radioactive Waste (Nagra), Wettingen, Switzerland

Herwegh, Marco

ProjectMember

Institute of Geological Sciences, University of Bern, Bern, Switzerland

ORCID:

https://orcid.org/0000-0001-7323-4199

Tectonic Modelling Laboratory At The Institute For Geological Sciences (TecLab Bern, Switzerland)

HostingInstitution

Institute of Geological Sciences of the University of Bern, Switzerland

labid:

dd35a3d4b656f3c9bb0d88fe2ff654a2

Zwaan, Frank

ContactPerson

Institute of Geological Sciences, University of Bern, Bern, Switzerland; GFZ German Research Centre for Geosciences, Potsdam, Germany


References

10.1186/s00015-022-00427-8


Citation

Zwaan, F., Schreurs, G., Madritsch, H., & Herwegh, M. (2022). Analysis of analogue models testing the influence of rheologically weak layers and basal fault kinematics on deformation in the overburden [Data set]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2022.032


Dates

Issued:

2022


Funding References

Funder name: NAGRA (National Cooperative for the Disposal of Radioactive Waste)


Rights

Creative Commons Attribution 4.0 International


Geo location(s)

Area of interest inspired by the geological situation in the Swiss Alpine Foreland


Spatial coordinates