3D Geophysical Inversion Modelling of the Wallaby Plateau: Evidence for Continental Crust and Seaward-Dipping Reflectors

The Wallaby Plateau is a bathymetric high off the west coast of Western Australia. It is considered a frontier region as little is known about the subsurface geology. To further investigate the rock properties in this region, 3D inversion models of density and magnetic susceptibility were generated, from gravity and magnetic data respectively, using a model-based trend removal method. Inversions were performed using UBC-GIF software on the National Computational Infrastructure's supercomputer facility to generate high-resolution (~7.56 million cells), regional-scale (550 x 550 x 25 km volume) models. Two cores of relatively low density, similar to continental crust, are identified across the Wallaby Plateau in the 3D density model. Divergent dipping reflector sequences, identified in seismic interpretation, tend to dip away from the zones of interpreted continental crust and also correlate well with bodies of high magnetic susceptibility identified in the 3D magnetic susceptibility model. Together, this suggests that the divergent dipping reflector sequences are similar to seaward-dipping reflector sequences of volcanic rift margins.

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Date (Publication)
2015-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/75550

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.11636/Record.2015.001

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Geoscience Australia

 Canberra
Author

Goodwin, J.A.

 1
Author

Hackney, R.

 2
Author

Williams, N.C.

 3
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Record

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2015/001

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MNHD
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Commonwealth of Australia (Geoscience Australia)
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Commonwealth of Australia (Geoscience Australia)

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  • Geoscientific information
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Unknown

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  • Record

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  • AU-WA

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

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  • Published_External

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Creative Commons Attribution 4.0 International Licence

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CC-BY

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4.0

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http://creativecommons.org/licenses/

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License

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Australian Government Security ClassificationSystem

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2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified
Language
English
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UTF8

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Commonwealth of Australia (Geoscience Australia)

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Download the Appendix C data (various formats)

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Download the Record (docx)

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  • docx

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Download the Record (pdf)

Download the Record (pdf)

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  • pdf

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Geophysical interpretation, 3D inversion modelling and seismic interpretation.

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Non geographic dataset
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GA Publication

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Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

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urn:uuid/d750509c-41e4-0756-e044-00144fdd4fa6

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GeoNetwork UUID

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English
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UTF8
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Commonwealth of Australia (Geoscience Australia)

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Document
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GA Record

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Geoscience Australia - short identifier for metadata record with

uuid

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eCatId/75550

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/d750509c-41e4-0756-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:10:56
Date info (Creation)
2013-03-07T00:00:00

Metadata standard

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AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

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Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

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