Magnetic modelling and interpretation of the Hay-Booligal Zone and its basement

Astrid Carlton

doi:10.1071/ASEG2015ab200

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

ISSN: 2202-0586
E-ISSN:

oa Magnetic modelling and interpretation of the Hay-Booligal Zone and its basement
Authors Astrid Carlton^a
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^a Geological Survey of New South Wales, 516 High St, Maitland, NSW, 2320, , Australia, [email protected]
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/ASEG2015ab200
- Published online: 01 Dec 2015

Abstract

Little is known about the basement of the Hay-Booligal Zone (located in NSW). Magnetic modelling of long wavelength anomalies within the Hay-Booligal Zone indicates that the Hay-Booligal basement consists of serpentinised ultramafic material at depths of 6 to 12 km. This supports interpretation that the Hay-Booligal basement could be similar to the Selwyn Block in Victoria and rather than a crystalline microcontinent.

Also, interpretation of short wavelength semi-parallel TMI anomalies near the previous boundary of the Hay-Booligal Zone has lead to the adjusted the boundary of the Hay-Booligal and Bendigo zones.

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2026-01-14

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References

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Cayley R.A., Taylor D.H., VandenBerg A.H.M. and Moore D.H. 2002. Proterozoic-Early Palaeozoic rocks and the Tyennan Orogeny in central Victoria: the Selwyn Block and its tectonic implications. Australian Journal of Earth Sciences 49, 225-254.
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Article Type: Research Article

Keyword(s): Hay-Booligal basement; Hay-Booligal Zone; Selwyn Block; serpentinised ultramafics

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