South Australian Solid Geology GIS Dataset & Maps
The Solid Geology of South Australia GIS dataset portrays rock units formed prior to the close of the Cambro-Ordovician Delamerian Orogeny. These prospective rocks are largely concealed below younger sedimentary basins and regolith.
The GIS dataset has been compiled from a number of recent, pre-existing province interpretations, with intervening regions assembled from the best-available map sources, or constructed from outcrop, drillhole and geophysical data.
The units have been presented in four time-slices which can be viewed separately, or superimposed.
It is hoped that the dataset will promote understanding of the broad geological architecture of the State and the succession of geological and mineralising events through time. Furthermore, it will assist correlation with the geology and mineral systems of neighbouring States and formerly attached terranes, and provide a regional perspective to more detailed studies and exploration projects.
Dataset Information
Dataset size is approximately 116Mb with GIS projects viewable with ArcMap, ArcView, ArcReader or MapInfo software (Coordinate Projection System: GDA94 South Australia Lambert Conformal Conic).
The data layers comprise the following time-slices:
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Neoproterozoic-Ordovician rock units (Adelaide Geosyncline, Officer Basin, Warburton Basin, basement to Murray Basin)
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Late Mesoproterozoic rock units (Musgrave Province)
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Middle Mesoproterozoic rock units (Cariewerloo Basin)
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Archaean-Early Mesoproterozoic rock units (Gawler Craton, Curnamona Province)
The dataset also includes:
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An introduction outlining the development and concept of Solid Geology dataset
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Time-space diagram and stratigraphic chart of units portrayed in GIS
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Presentation, abstract and poster from SAREIC 2005 (South Australian Resources Exploration and Investment Conference)
Availability
A CD of the Solid Geology of South Australia GIS dataset is available from the Customer Services Centre at a cost of $20.
For users of SARIG, a version of the Solid Geology dataset has also been added to the Map Window. The four time-slices under the heading of Archaean-Ordovician Solid Geology, have been included as a downloadable layer set. These layers are under the heading Geology in the layer control panel.
Solid Geology of SA Map Series
A four-part 1:2 000 000 hardcopy plot-on-demand map series derived from the Solid Geology of South Australia GIS dataset is now also available from the Customer Services Centre. The maps, each with customised reference, portray:
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Archaean to Ordovician Solid Geology, with all time slices superimposed in their actual arrangement
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Archaean-Early Mesoproterozoic time slice (Gawler Craton, Curnamona Province)
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Late Mesoproterozoic time slice (Musgrave Province) and Middle Mesoproterozoic (Cariewerloo Basin) time slice combined
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Neoproterozoic-Ordovician time slice (Adelaide Geosyncline, Officer Basin, Warburton Basin, basement to Murray Basin).
To order copies of the maps contact the Customer Services Centre.
References
Detailed explanations of some of the new and more significant revised interpretations for individual provinces and source datasets, (with discussions of the methods used and the geological reasoning behind them), together with the background to the dataset and maps, are available in a MESA Journal article titled, 'Solid geology of South Australia: peeling away the cover'.
This article was published in MESA Journal 43 and can be viewed online through the MESA Journal 43 index page.
- Page URL: http://www.pir.sa.gov.au/minerals/geological_survey_of_sa/data/geoscientific_gis_datasets/south_australian_solid_geology
- Page Last Modified: November 8, 2011