Constraining the architecture of the western Gawler Craton using geology and geophysics
The recent acquisition and interpretation of the deep crustal seismic line 13GA-EG1 has allowed a new 3D model to be constructed for the western Gawler Craton. The new 3D model expands on the Eastern Gawler IOGC / Woomera Prohibited Area model, which sits to the north and east of this seismic line.
Interpretations used to construct this model were derived from a cross-border collaborative work program between the Geological Survey of South Australia, the Geological Survey of Western Australia and Geoscience Australia, initiated by the collection of seismic line 13GA-EG1.
This is the first of three models which will cover the length of the seismic line 13GA-EG1; the others being the Albany-Fraser Orogen model in Western Australia and the Coompana model which straddles the WA/SA border. These are being worked on and will be published in the coming years to produce a continuous crustal architecture and density model between the Gawler and Yilgarn Cratons.
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: May 2017
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