The Curie depth of Australia, and its uncertainty

Richard Chopping; Brian L.N. Kennett

doi:10.1071/ASEG2013ab199

ISSN: 2202-0586
E-ISSN:

oa The Curie depth of Australia, and its uncertainty
Authors Richard Chopping^a and Brian L.N. Kennett^b
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^a Geoscience Australia, and Research School of Earth Sciences, , ANU GPO Box 378 Canberra, ACT, 2601, richard.chopping@ga,gov.au ^b Research School of Earth Sciences, Australian National University, Canberra, ACT, 0200, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2013, Issue ASEG2013 - 23rd Geophysical Conference, Dec 2013, p. 1 - 3
DOI: https://doi.org/10.1071/ASEG2013ab199
- Published online: 01 Dec 2013

Abstract

The Curie depth is the depth at which the crust or upper mantle ceases being magnetic due to temperature effects. Although there are several methods available to map this depth, magnetic methods are most often used. These methods, however, introduce uncertainty into the depth estimates and this uncertainty has not been adequately addressed in previous studies.

In this study, we have used magnetic data, at multiple scales, in combination with Monte Carlo techniques to evaluate both the Curie depth and its uncertainty for the Australian continent. Variations in the Curie depth for Australia are related to differences in mineralogy and thermal regimes across differing provinces of Australia, and may also be used to further our knowledge of crustal geothermal gradients. Increasing our knowledge in these areas will advance our understanding of uranium, geothermal and hydrocarbon systems in Australia.

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2026-01-24

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References

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Article Type: Research Article

Keyword(s): Curie depth; inversion; magnetics

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