Solid Geology: Gairdner Dolerite
Created: 19 Nov 2024 Revised: 28 Mar 2025

An interpretation of intrusive dykes of Gairdner Dyke Swarm for South Australia. As these dykes are largely hidden below younger sediments and soil, the dataset is synthesised from subsurface drillhole and geophysical data, combined with limited...

An interpretation of intrusive dykes of Gairdner Dyke Swarm for South Australia. As these dykes are largely hidden below younger sediments and soil, the dataset is synthesised from subsurface drillhole and geophysical data, combined with limited surface data and, where these exist, previous interpretations.

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About this record

Record No mesac763
Topic Geoscientific Information
Type of Resource Dataset
Category Type
Document Type
Contributor
Sponsor
Tenement
Tenement Holder
Operator
Geological Province
    Other
    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/dataset/mesac763
      Citation Solid Geology: Gairdner Dolerite
      https://pid.sarig.sa.gov.au/dataset/mesac763

      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 display the location and attributes of South Australia's Gairdner Dolerite interpreted solid geology.
      To display the location and attributes of South Australia's Gairdner Dolerite interpreted solid geology.
      Lineage
      Source data:
      Pre-existing digital solid geology/tectonic interpretations existing only for portions of the State
      Selected polygons from 1:2000000 surface geology digital dataset
      Various hardcopy solid geology/tectonic interpretations at varying...
      Source data:
      Pre-existing digital solid geology/tectonic interpretations existing only for portions of the State
      Selected polygons from 1:2000000 surface geology digital dataset
      Various hardcopy solid geology/tectonic interpretations at varying scales and detail
      The remainder of the interpretation is newly created for this dataset
      
      Processing steps:
      Geological linework in relevant areas imported from digital datasets, or scanned and rectified into desktop GIS
      Linework modified and extended on desktop GIS into uninterpreted areas using geological data and interpretations from drillholes, geophysical surveys and other published reports and maps.
      Linework cleaned and coded
      Polygon topology built
      Polygons coded according to attribute table constructed as dataset assembled
      
      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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      Attribute details

      Name Definition
      Domain Geological sub-province(s) in which unit occurs
      Sequset Upper-level sequence-stratigraphic groupings represented by unit
      Minmod Minimum age of formation
      Minmeth Method of determining minimum age. i.e. geochronolgy
      Maxmod Maximum age of formation
      Maxmeth Determination of maximum age. i.e. geochronology
      Stratigraphic name Name of stratigraphic unit
      Stratigraphic description Description of stratigraphic unit
      Subdiv name N/A
      Subdiv symbol N/A
      Age Age of formation
      Primary age Isotopic ages of formation of the unit
      Orogeny age Isotopic ages of later metamorphism or deformation of the unit
      Minage Minimum period of formation
      Maxage Maximum period of the formation
      GL code Unique identification code
      GIS code Unique GIS identification code
      Stratno Numeric code of stratigraphic unit
      Inheritage Isotopic ages of older components incorporated in the unit
      Map unit Unique stratigraphic identifier for corporate GIS geology polygon classification
      SG Province Geological province(s) in which unit occurs
      Main unit Main stratigraphic unit
      Major strat Names of major stratigraphic units included in the unit
      SG Description Geological description of unit
      Province Name of geological province