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Federal Office of Topography swisstopo

Quality assurance

There is only very little “hard” – and therefore trusted – depth data available (e.g. bore hole information) for geological 3D modelling. The remaining information on the progression of underground geological formations is modelled using expert geological knowledge and with the aid of 3D geological modelling software.

Amongst other things, the Swiss Geological Survey implements the restoration method for quality assurance purposes. With the aid of appropriate technologies, attempts are made to deduce or (re-)construct the un-deformed stage (origin) based on the deformed stage (today) is attempted. „Move“, the software used, supports the Swiss Geological Survey by making the appropriate tools available:  

  • Balancing of models in 2D and 3D 
  • Restoration of models in 2D and 3D 
  • Forward modelling of events (e.g. sedimentation) 
  • Scenario-based modelling of turbidity currents

In the case of restoration (1), today’s geological state is modelled; (2) with the aid of balancing, the model is validated in 2D and 3D; and (3) with the appropriate techniques and applications, the model is refined to such an extent that it is geologically, geometrically and kinematically correct.

Using the geological 3D base model that is produced at the end, a thorough analysis of the existing geological 3D models can then be carried out (e.g. finite element modelling, etc.) with the help of the “forward modelling” method.

 

Film sequence of a thrust fault (2D)
Example 1: thrust fault (2D, section)

Film sequence of a backward-modelled thrust fault (2D)
Example 2: restoration (2D, section)

 

Film sequence of movement along a fold in 3D
Example 3: movement along a fold (3D)

 

Film sequence of rifting with simultaneous sedimentation (2D)
Example 4: rifting with simultaneous sedimentation (2D, section)

 

Comments about this page: Roland Baumberger
Last updated: 21.04.2011

Contact

Baumberger Roland
Project manager 3D-Geology

Geological Survey
Coordination and Management

Tel. +41 31 963 25 75
E-Mail to Roland Baumberger

 

Organisation

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