Potential-field data for structural interpretation in the northern Perth Basin, Australia

Ron Hackney; Lisa Hall; Nils Köther

doi:10.1071/ASEG2012ab167

ISSN: 2202-0586
E-ISSN:

oa Potential-field data for structural interpretation in the northern Perth Basin, Australia
Authors Ron Hackney^a, Lisa Hall^b and Nils Köther^c
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^a Geoscience Australia, GPO Box 378 Canberra, ACT 2601, Australia, [email protected] ^b Geoscience Australia, GPO Box 378 Canberra, ACT 2601, Australia, [email protected] ^c Department of GeophysicsUniversity of Kiel, Otto-Hahn-Platz 1 24118, Kiel, , Germany, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2012, Issue ASEG2012 - 22nd Geophysical Conference, Dec 2012, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2012ab167
- Published online: 01 Dec 2012

Abstract

Summary

New compilations of levelled marine and onshore gravity and magnetic data are facilitating structural and geological interpretations of the offshore northern Perth Basin. Multi-scale edge detection applied to these data helps the mapping of structural trends within the basin and complements interpretations based on seismic reflection data. Together with edge detection, magnetic source polygons determined from tilt angle aid in extrapolating exposed basement under sedimentary basins and, therefore, assist in the mapping of basement terranes. Three-dimensional gravity modelling of crustal structure indicates deeper Moho beneath the onshore and inboard parts of the Perth Basin and that crustal thinning is pronounced only under the outboard parts of the basin (Zeewcyk Sub-basin).

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2012-12-01

2026-01-19

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References

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Article Type: Research Article

Keyword(s): gravity; magnetics; Perth Basin; structure

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