The Tanami 3-D geological model – integrating geology and potential field data

L.C. Vandenberg; A.J. Meixner; M.G. Nicoll

doi:10.1071/ASEG2004ab149

ISSN: 2202-0586
E-ISSN:

oa The Tanami 3-D geological model – integrating geology and potential field data
Authors L.C. Vandenberg^a, A.J. Meixner^b and M.G. Nicoll^c
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^a Northern Territory Geological Survey, [email protected] ^b Geoscience Australia, [email protected] ^c Geoscience Australia, mailto:[email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2004, Issue ASEG2004 - 17th Geophysical Conference, Dec 2004, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2004ab149
- Published online: 01 Dec 2004

Abstract

This study presents a 3-D model of the regional geology of the Tanami region, Northern Territory. The Tanami region consists of large areas of shallow cover material obscuring multiply deformed Archaean and Palaeoproterozoic metasediments and granites.

The model consists of a skeleton of 19 serial geological cross-sections that have been tested by potential field modelling. The sections were located to cross geophysical anomalies at right angles to simulate a 2-D modelling environment, while crossing regions of outcropping basement geology. The process of potential field modelling necessitated continuous reappraisal of the existing geological data and possible interpretations.

Modelled sections and basement interpretation maps were captured, spatially arranged and used to interpolate regional structures and features in 3-D space. Modelled sections, interpolated surfaces, basement maps and other datasets were then combined in a 3-D space to produce the final web-accessible model.

The final model provides a unique 3-D view of the main geological structures and elements of this poorly exposed domain. In doing so, the model provides a framework to better constrain the gross crustal architecture of the region.

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References

Blewett, R., Champion, D., Whitaker, A., Bell, B., Nicoll, M., Goleby, B., Cassidy, K., and Groenewald, B., 2002, A new 3-D model of the Leonora-Laverton transect: implications for the tectonic evolution of the eastern Yilgarn Craton. In: Applied structural geology for mineral exploration and mining, International Symposium, Kalgoorlie, Western Australia, 23-25 September, Abstracts: Australian Institute of Geoscientists, Bulletin 36, 18-21.
Clark, D.A., 1997, Magnetic petrophysics and magnetic petrology: aids to geological interpretation of magnetic surveys: AGSO Journal of Australian Geology & Geophysics, 17(2), 83-103.
Crispe A.J., and Vandenberg, C, in prep, Geology of the Tanami Region. Northern Territory Geological Survey, Record.
Heiland, C.A., 1968, Geophysical exploration: Hafner Publishing Company.
stratigraphy of the Tanami Region: regional correlations and relation to mineralisation - preliminary results: Northern Territory Geological Survey, Record 2000-013.
Jakosky, J.J., 1950, Exploration geophysics, 2nd edition: Trija Publishing Company.
Page, R.W., 1995, Geochronology of an exposed late Archaean basement terrane in The Granites - Tanami region. Australian Geological Survey Organisation, Research Newsletter 22, 19-20.
Richardson, L.M., 2003, Index of airborne geophysical surveys - 7th edition: Geoscience Australia, Record 2003/10.
Slater, K.R., 2000a,. TANAMI SE 52-15 1:250 000 integrated interpretation of geophysics and geology: Northern Territory Geological Survey.
Slater, K.R., 2000b, THE GRANITES SF 52-3 1:250 000 Integrated interpretation of geophysics and geology: Northern Territory Geological Survey.
Telford, W.M., 1976, Applied geophysics: Cambridge University Press.
Vandenberg, L.C., Johnstone, A.L., Donnellan, N., Green, M.G., and Crispe, A, 2004, Northern Arunta Region integrated interpretation of geophysics and geology, Northern Territory (First Edition) 1:500 000-scale map. Northern Territory Geological Survey, Alice Springs.
Vandenberg, L.C., and Meixner A.J., 2003, The Tanami 3D model. In Annual Geoscience Exploration Seminar (AGES), Alice Springs, March: Abstracts: Northern Territory Geological Survey, Record GS 2003-0001.
Williamson, J.P., Pharaoh, T.C., Banka, D., Thybo, H., Laigle, M., and Lee, M.K., 2002, Potential field modelling of the Baltica-Avalonia (Thor-Tornquist) suture beneath the southern North Sea: Tectonophysics 360,47-60.
Hendrickx, M.A., Slater, K.R., Crispe, A.J., Dean, A.A., Vandenberg, L.C., and Smith, J.B., 2000, Palaeoproterozoic
Wynne, P., and Bacchin, M., for the Australian region: Australia, Canberra.

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Article Type: Research Article

Keyword(s): 3-D modelling; mineralisation; potential field modelling; Tanami

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