Updated:
04 August 2006
GA Record 2006/12: The 2003-2004 Curnamona Province Seismic Survey: Workshop Notes
B.R. Goleby, R.J. Korsch, T. Fomin, C.H.H. Conor; W.V. Preiss, R.S. Roberton and A.C. Burtt
Geoscience Australia Record 2006/12
Executive summary
For over a decade Geoscience Australia has adopted a practice of releasing the processed seismic reflection data, together with an initial interpretation, as soon as possible after the completion of data acquisition. This policy reflects recognition that new data and ideas are a valuable resource for both researchers and the exploration industry, and that seismic data often provides new insights into the structure of the crust at depth. This data and interpretation release is normally done in a workshop that is open to all, with an understanding that not all ideas are fully developed.
The Curnamona Project is a collaborative project between PIRSA Minerals and Energy Resources, the predictive mineral discovery Cooperative Research Centre (pmd*CRC) and Geoscience Australia using the seismic acquisition facilities of the National Facility for Earth Sounding (ANSIR). The aim of the Curnamona survey was to provide information on the crustal architecture of the southern Curnamona Province in both the highly prospective Palaeo- and Mesoproterozoic rocks and the overlying Neoproterozoic and Cambrian succession in South Australia. A particular objective was the imaging of the deep crust and major structural features that may have influenced hydrothermal fluid flow, and hence mineralisation.
The Curnamona seismic workshop is the first public display and discussion of data and results of the Curnamona seismic survey commenced in 2003 and completed in 2004 after being washed out by floods in 2003. Feedback on the seismic results back to GA and PIRSA project staff at this workshop is as valuable as the information flow to the workshop attendees, because it helps to further develop the geological understanding that is emerging from the seismic data.
The seismic results reveal a crustal architecture for the Curnamona Province of eastern South Australia that provides important information on basement architecture that will enhance investment and targeting strategies for mineral explorers in the province. One example, the observation that the Kalkaroo prospect appears to be related to s order faults associated with hanging wall anticlines above a major bounding east-dipping fault at depth, opens up the possibility for further mineral deposits associated with other hanging wall anticlines above eastdipping faults.
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