Regional geodynamic study of the Yilgarn-Officer-Musgrave region - Investigating the deep crust using forward modelling and 3D inversion

James Goodwin; Tim Jones; Russell Korsch; Terry Brennan; Malcolm Nicoll

doi:10.1071/ASEG2013ab051

ISSN: 2202-0586
E-ISSN:

oa Regional geodynamic study of the Yilgarn-Officer-Musgrave region - Investigating the deep crust using forward modelling and 3D inversion
Authors James Goodwin^a, Tim Jones^b, Russell Korsch^c, Terry Brennan^d and Malcolm Nicoll^e
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^a Geoscience Australia, Canberra, , ACT, [email protected] ^b Geoscience Australia, Canberra, , ACT, [email protected] ^c Geoscience Australia, Canberra, , ACT, [email protected] ^d Geoscience Australia, Canberra, , ACT, [email protected] ^e Geoscience Australia, Canberra, , ACT, [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/ASEG2013ab051
- Published online: 01 Dec 2013

Abstract

The 11GA-YO1 deep seismic reflection survey reveals information on the crust down to ~66 km depth, imaging the crust-mantle boundary and the upper mantle. The seismic survey traverses the Yilgarn Craton, Officer Basin and Musgrave Province yielding information on their key structures and boundaries.

Interpretation of the seismic reflection data was complemented with forward modelling and 3D inversion of gravity and magnetic data. This allowed the geological structures interpreted in the seismic data to be investigated and extended into 3D space.

The 3D gravity and magnetic inversions reveal information on the geology and structure of the crust in the Yilgarn-Officer-Musgrave (YOM) region. In particular, information on the nature of dipping bodies beneath the Officer Basin and the boundary between the Yilgarn Craton and Musgrave Province.

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2013-12-01

2026-01-15

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Article Type: Research Article

Keyword(s): 3D inversion; forward modelling; gravity; magnetics; seismic reflection

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Abstract

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