A Major Geophysical Experiment in the Capricorn Orogeny, Western Australia

Alan Aitken; Sasha Banasazczyk; Michael Dentith; Mark Lindsay; Jeffrey Shragge; Perla Pina-Varas; David Annetts; James Austin; Yusen Ley-Cooper; Tim Monday; Brian Kennett; Ruth Murdie; Huaiyu Yuan

doi:10.1071/ASEG2015ab196

24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery

ISSN: 2202-0586
E-ISSN:

oa A Major Geophysical Experiment in the Capricorn Orogeny, Western Australia
Authors Alan Aitken^a, Sasha Banasazczyk^a, Michael Dentith^a, Mark Lindsay^a, Jeffrey Shragge^a, Perla Pina-Varas^a, David Annetts^b, James Austin^b, Yusen Ley-Cooper^b, Tim Monday^b, Brian Kennett^c, Ruth Murdie^d and Huaiyu Yuan^e
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^a Centre for Exploration TargetingThe University of Western Australia ^b Mineral Resources Flagship CSIRO ^c Australian National University ^d Geological Survey of WA ^e Centre of Excellence for Core to Crust Fluid SystemsMacquarie University
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2015, Issue 24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery, Dec 2015, p. 1 - 5
DOI: https://doi.org/10.1071/ASEG2015ab196
- Published online: 01 Dec 2015

Abstract

A major geophysical experiment has begun in the Capricorn Orogen in Western Australia. Orogen-scale passive seismic and magnetotelluric surveys are on-going and preliminary results suggest have successfully delineated the base of the crust and major structures and tectonic boundaries. Airborne electromagnetic data have successfully mapped features in the near-surface such as palaeovalleys.

The integration of the different geophysical datasets with each other and with parallel geological studies are intended to lead to a better understanding the Capricorn Orogen and develop exploration approaches and appropriate toolkits that significantly improve our ability to prospect under cover.

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2026-01-20

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References

Aitken, A. R. A., M. L. Salmon, and B. L. N. Kennett, 2013. Australia’s Moho: a test of the usefulness of gravity modelling for the determination of Moho depth. Tectonophysics, 609, 468-479.
Aitken, A. R. A., A. Joly, M. C. Dentith, S. P. Johnson, A. M. Thorne, and I. M. Tyler, 2014. 3D architecture, structural evolution and mineral prospectivity of the Gascoyne Province, Report 123, Geological Survey of Western Australia.
Alghamdi, A.H., Aitken, A.R.A. and Dentith, M.C, 22015., Deep Crustal Structure of the Capricorn Orogen from Gravity and Seismic data., ASEG Conference 2015, Extended Abstract.
Costello, M., 2014. The Capricorn 2013 AEM TEMPEST® survey. Geoscience Australia, Geocat Number: 81642
Dentith, M., Aitken, A., Evans, S., Johnson, S.P., Joly, A., Thiel, S. and Tyler, I.M., 2014. A Magnetotelluric Traverse Across the Eastern part of the Capricorn Orogen. Report 135, Geological Survey of Western Australia.
Johnson, S.P., Thorne, A.M., Tyler, I.M., Korsch, R.J., Kennett, B.L.N., Cutten, H.N., Goodwin, J., Blay, O., Blewett, R.S., Joly, A., Dentith, M.C., Aitken, A.R.A., Holzschuh, J., Salmon, M., Reading, A., Heinson, G., Borden, G. , Ross, J., Costelloe, R.D. and Fomin, T., 2013. Crustal architecture of the Capricorn Orogen, Western Australia and associated metallogeny. Australian Journal of Earth Sciences, 60, 681705.
Ley-Cooper, Y., J. Macnae, and A. Viezzoli, 2010. Breaks in lithology: Interpretation problems when handling 2D structures with a 1D approximation, Geophysics, 75, WA179-WA188.
McCuaig, T.C., Beresford, S. and Hronsky, J., 2010. Translating the mineral systems approach into an effective exploration targeting system. Ore Geology Reviews, 38, 128138.
Munday, T., Y. Ley Cooper, S. Johnson, and I. Tyler, 2013. A regional scale fixed-wing TDEM survey of the Palaeo-Proterozoic Bryah Basin, Western Australia: Providing insights into a geological setting highly prospective for VMS Cu-Au and mesothermal Au Systems, ASEG Conference 2013, Extended Abstracts.

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Article Type: Research Article

Keyword(s): Airborne electromagnetics; Capricorn Orogen; magnetotellurics; mineral systems; passive seismic surveys

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