Geodynamic Implications Of A Deep Seismic Reflection Transect From The Western Eyre Peninsula In South Australia To The Darling Basin In New South Wales  


Authors / CoAuthors

Korsch, R.J. | Preiss, W.V. | Blewett, R.S. | Cowley, W.M. | Neumann, N.L. | Fabris, A.J. | Fraser, G.L. | Dutch, R. | Fomin, T. | Holzschuh, J. | Fricke, C.E. | Reid, A.J. | Carr, L.K. | Bendall, B.R.

Abstract

Over the last fifteen years, Geoscience Australia, through its Onshore Energy Security Program, in conjunction with Primary Industries and Resources South Australia (PIRSA), the Geological Survey of New South Wales (Industry & Investment NSW), the Australian Geodynamics Cooperative Research Centre, and the Predictive Mineral Discovery Cooperative Research Centre (pmd*CRC), has acquired several deep seismic reflection profiles, which, when combined, form an east-west transect about 870 km long in southeastern Australia. The seismic data vary from low-fold, dynamite-source to higher-fold, vibroseis-source data. The combined seismic profiles, from the western Eyre Peninsula to the Darling Basin, provide a near complete cross-section of the crust across the Gawler Craton, Adelaide Rift System, Curnamona Province, Koonenberry Belt and Darling Basin. The entire region is dominated by east-dipping faults, some of which originated as basin-bounding extensional faults, but most appear also to have a thrust sense of movement overprinting the extension. In the Gawler Craton, an inferred shallow, thin-skinned thrust belt occurs to the west of an inferred thick-skinned thrust belt. The boundary between the two thrust belts, the Kalinjala Mylonite Zone, was active at least during the Kimban Orogeny, with possible extensional movement at that time. The thrust movement possibly occurred during the ~1600 Ma Olarian Orogeny.

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nonGeographicDataset

eCat Id

70471

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MNHD  

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Commonwealth of Australia (Geoscience Australia)  
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Keywords

  • GA Publication
( Theme )
  • seismic sections
( Theme )
  • geodynamics
( Theme )
  • plate tectonics
( Theme )
  • structural geology
  • AU-NSWAU-SA
Australian and New Zealand Standard Research Classification (ANZSRC)
  • Earth Sciences
  • Published_Internal

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2010-01-01T00:00:00

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geoscientificInformation

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