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South Australian Geophysical Reference Model
Created: 13 May 2025 Revised: 13 May 2025
Author: Gouthas, G.

The South Australian Geophysical Reference Model (SAGRM) integrates 3D geophysical data that covers the entire state to a depth of 100 km. The model incorporates new gravity, magnetic, and magnetotelluric inversions with existing deep crustal...

The South Australian Geophysical Reference Model (SAGRM) integrates 3D geophysical data that covers the entire state to a depth of 100 km. The model incorporates new gravity, magnetic, and magnetotelluric inversions with existing deep crustal reflection seismic surveys and seismological velocity models into an integrated 3D model.

The South Australian Geophysical Reference Model forms part of a collaborative project between the Geological Survey of South Australia, the University of Adelaide (UoA), Geoscience Australia and the Deep Exploration Technologies Cooperative Research Centre (DET CRC). The South Australian Geophysical Reference Model is a valuable new research and exploration tool. The model enables users to visualise, query and interpret the state's vast archive of geophysical datasets in a full 3D environment.

This is the first time a model of this size, complexity and completeness of geophysical data has been produced for the entire State. The model is a significant contribution to the lithospheric architecture theme of the UNCOVER initiative. The SAGRM is designed to be readily updateable and will incorporate new datasets, such as AusLamp, AusArray and the Gawler Craton magnetic survey, as they become available.

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About this record

Record No mesac824
Topic Geoscientific Information
Type of Resource Model
Category Type
Document Type
Contributor Geological Survey of South Australia
Sponsor
Geological Province
    Mine Name
    Stratigraphy
    Commodity
      Notes 
      
                    
                    
      
                    
                        		
                
      
              

                
      
                  
                    Language
                  
                  English
                    
                
      
              

                
      
                  
                    Metadata Standard
                  
                  ISO 19115-3
                    
                
      
              
            
    
      
  
      
            
      
            
      
              
      
  

    
      Citations
      
      
    
      
    
      
      
          Use constraints        
      
      
        License
      
    
      
    
      
      
          License        
      
      
        


  
    
  
    Creative Commons Attribution 4.0
  

  

      
    
      
    
      
      
          Persistent identifier        
      
      
        https://pid.sarig.sa.gov.au/model/mesac824
         
          
      
    
      
    
      
      
          Citation        
      
      
        
          Gouthas, G. South Australian Geophysical Reference Model
          
      
          https://pid.sarig.sa.gov.au/model/mesac824
              
         
        
            		
    
      
  
        
  
      
  
      
            
      
            
      
              
      
  
      Technical information
      
    
  
    
                
      
                  
                    Status
                  
                  Completed
                
      
              
                
      
                  
                    Maintenance and Update Frequency
                  
                  
                
      
              
                
      
                  
                    Geographic Reference
                  
                  GDA2020 (EPSG:7844)
                
      
              
      
                
                  Geo bounding box        
                
                
                  {"type":"Polygon","coordinates":[[[129,-38],[141,-38],[141,-26],[129,-26],[129,-38]]]}
                
              
      
                
                
      
                  
                    Purpose
                  
                  
                    
      To aid in geological exploration.
      
                    
                    
      To aid in geological exploration.
      
                    
                        		
                
      
              
                
                
      
                  
                    Lineage
                  
                  
                    
      Note: these models are presented as a 'proof of concept' only and their accuracy (spatial or otherwise) should not be relied upon for exploration or other decision making processes.
The linked zip file [overall uncompressed size ~36 Gb] contains...
      
                    
                    
      Note: these models are presented as a 'proof of concept' only and their accuracy (spatial or otherwise) should not be relied upon for exploration or other decision making processes.
The linked zip file [overall uncompressed size ~36 Gb] contains all of the data used to build this 3D model, presented in various file formats.

Positional accuracy:
Horizontal accuracy of the drillholes is variable due to the method of capture (map, handheld GPS, differential GPS, etc); Horizontal accuracy of Formation boundaries is variable (interpreted); Vertical accuracy of the interpolated formation surfaces, topographic and basement surfaces are variable due to resampling (topographic surface), interpretation (formation boundaries) and interpolation.

Attribute accuracy:
Geological attributes are based on interpretation of features in the subsurface which are not directly observable; thus they are subject to alternative interpretations.
      
                    
                      
      
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