2-D and 3-D IP/Resistivity Inversion for the Interpretation of Isa-Style Targets

Andrea Rutley; Douglas W. Oldenburg; Roman Shekhtman

doi:10.1071/EG01156

ISSN: 0812-3985
E-ISSN: 1834-7533

2-D and 3-D IP/Resistivity Inversion for the Interpretation of Isa-Style Targets
Authors Andrea Rutley^a, Douglas W. Oldenburg^b and Roman Shekhtman^c
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^a MIM Exploration Pty Ltd, , Australia, [email protected] ^b University of British Columbia, , Canada, [email protected] ^c UBC Geophysical Inversion Facility, , Canada, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 32, Issue 3-4, Sep 2001, p. 156 - 159
DOI: https://doi.org/10.1071/EG01156
- Published online: 01 Sep 2001

Abstract

A total of twenty line kilometres of IP, DC resistivity and MT data have been acquired using MIMDAS, (MIM's Distributed Acquisition System), over the Cluny prospect, south of Mt Isa. The utilisation of two-dimensional and three-dimensional inversion programmes has provided a significant advantage in the interpretation of these data.

The integration of geology and geophysics through the use of inversion, particularly three-dimensional inversions, has greatly improved the geological understanding of the Cluny region. It has enabled the identification of variations along linear conductors, and anomalous chargeable zones. This has implications for the ability of geophysics to provide discrimination for mineralisation along linearly extensive stratigraphy.

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References

Fallon, G. N., and Busuttil, S, 1992, An appraisal of the geophysical effects of the Mount Isa ore bodies, Exploration Geophysics, 23 1/2, 133-139.
Li, Y., and Oldenburg, D., 2000, 3-D inversion of induced polarization data, Geophysics 65, 6, 1931-1945.
Mclnnes, S., 1999, TS2DIP documentation, Zonge Data Processing, smooth-model resistivity and IP inversion with topography, version 3.02.
Poole, J.R., 1981, A reassessment of the Mount Novit Prospect: unpublished company report.
Russell, R.E., 1978, The Mount Novit Pb-Ag-Zn Deposit - variations on a Mount Isa theme: Third Australian Geological Convention, Geological Society Australia, 31, p 31.
Shalley, M., 1997, Early geophysical exploration at Mount Isa Part I: The beginnings: Preview, 69, 15-19.

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Article Type: Research Article

Keyword(s): 2- & 3-D inversion; IP; MIMDAS; Mt Isa; resistivity

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2-D and 3-D IP/Resistivity Inversion for the Interpretation of Isa-Style Targets

Abstract

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