Early conceptual models
The Geological Survey’s early 3D modelling trials targeted both the Curnamona and Gawler cratons.
The process for building each model in GeoModeller, began with identifying the stratigraphic units that were to be modelled. Due to the regional scale of each project, the stratigraphic pile represents packages of units aggregated into single units. The stratigraphic pile and contact relationships between units (erosive or onlapping) are additional parameters used by GeoModeller for model interpolation.
Kriging interpolators compute a three dimensional model, utilising the rules of a stratigraphic pile as well as conformable and erosional contact of units as defined by the modeller.
Completed models display 3D objects representing the major stratigraphic units within the Curnamona and Gawler cratons.
In the State-wide model, both the Curnamona and Gawler models were converted to GOCAD and then extended to cover the remainder of South Australia using a generalisation of the Solid Geology of South Australia GIS dataset.
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.
Publication Date: 2006 - 2010
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