ORCID Profile
0000-0001-9381-5732
Current Organisations
CSIRO
,
University of Western Australia
,
Commonwealth Scientific and Industrial Research Organisation
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Basin Analysis | Geology | Geodynamics | Tectonics
Expanding Knowledge in the Earth Sciences | Mineral Exploration not elsewhere classified | Copper Ore Exploration |
Publisher: Elsevier BV
Date: 07-1998
Publisher: Elsevier BV
Date: 06-2016
Publisher: Elsevier BV
Date: 10-2007
Publisher: Elsevier BV
Date: 08-2021
Publisher: Geological Survey of Western Australia
Date: 1998
Publisher: Elsevier BV
Date: 09-2019
Publisher: Elsevier BV
Date: 07-2020
Publisher: Elsevier BV
Date: 10-2017
Publisher: Informa UK Limited
Date: 08-2000
Publisher: Elsevier BV
Date: 2003
Publisher: Informa UK Limited
Date: 12-2016
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 03-2017
Publisher: Elsevier BV
Date: 2021
Publisher: Springer Science and Business Media LLC
Date: 10-06-2020
Publisher: Informa UK Limited
Date: 12-2018
Publisher: Elsevier BV
Date: 2016
Publisher: Elsevier BV
Date: 11-2016
Publisher: Geological Survey of Western Australia
Date: 2000
Publisher: Elsevier BV
Date: 03-2018
Publisher: Copernicus GmbH
Date: 24-06-2020
Abstract: Abstract. Gravity and 3D modelling combined with geochemical analysis examine the subsurface within and below the poorly exposed Palaeoproterozoic Yerrida Basin in central Western Australia. Understanding the structure of a region is important as key features indicating past geodynamic processes and tectonic activity can be revealed. However, in stable, post-depositional tectonic settings only the younger sedimentary units tend to be widely exposed, rendering direct observation of basement and intrusive rocks impossible. Geophysical imaging and modelling can reveal the structure of a region undercover. High-magnitude density anomalies around the basin cannot be reconciled with current geological knowledge in the case presented here. The gravity anomalies infer an abundance of buried and high-density material not indicated by the surface geology. A hypothetical causative source for the high-magnitude gravity anomalies is mafic rocks that were intruded and extruded during basin rifting. The simplest and plausible stratigraphic attribution of these interpreted mafic rocks is to the Killara Formation within the Mooloogool Group. However, geochemistry reveals that the Killara Formation is not the only host to mafic rocks within the region. The mafic rocks present in the Juderina Formation are largely ignored in descriptions of Yerrida Basin magmatism, and results indicate that they may be far more substantial than once thought. Sulfur isotopic data indicate no Archean signature to these mafic rocks, a somewhat surprising result given the basement to the basin is the Archean Yilgarn Craton. We propose the source of mafic rocks is vents located to the north along the Goodin Fault or under the Bryah sub-basin and Padbury Basin. The conclusion is that the formation of the Yerrida Basin involves a geodynamic history more complex than previously thought. This result highlights the value in geophysics and geochemistry in revealing the complexity of the earlier geodynamic evolution of the basin that may be indiscernible from surface geology but may have high importance for the tectonic development of the region and its mineral resources.
Publisher: Elsevier BV
Date: 03-2018
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 06-2017
Publisher: Informa UK Limited
Date: 08-1998
Publisher: Elsevier BV
Date: 02-2022
Publisher: Elsevier BV
Date: 04-2019
Publisher: Geological Survey of Western Australia
Date: 2000
Publisher: Informa UK Limited
Date: 06-2005
Publisher: Elsevier BV
Date: 04-2018
Publisher: CSIRO
Date: 2022
DOI: 10.25919/7R9T-KA45
Publisher: Geological Survey of Western Australia
Date: 1997
Publisher: Elsevier BV
Date: 02-2021
Publisher: Informa UK Limited
Date: 12-2016
Publisher: Elsevier BV
Date: 2018
Publisher: Informa UK Limited
Date: 12-2016
Publisher: Geological Society of London
Date: 2004
Publisher: Elsevier BV
Date: 2004
Publisher: Elsevier BV
Date: 2004
Publisher: Elsevier BV
Date: 2004
Publisher: Elsevier BV
Date: 2004
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 07-1998
Publisher: Geological Society of London
Date: 08-10-2018
DOI: 10.1144/SP453.8
Publisher: Geological Society of London
Date: 22-05-2018
DOI: 10.1144/SP453.6
Publisher: Informa UK Limited
Date: 11-11-2019
Publisher: Elsevier BV
Date: 11-2021
Publisher: Geological Society of London
Date: 2009
DOI: 10.1144/SP327.18
Publisher: Geological Survey of Western Australia
Date: 1999
Publisher: Elsevier BV
Date: 07-2019
Publisher: Society of Economic Geologists
Date: 12-2017
Publisher: Geological Survey of Western Australia
Date: 1998
Location: Australia
Start Date: 2013
End Date: 2016
Funder: Australian Research Council
View Funded ActivityStart Date: 08-2020
End Date: 08-2024
Amount: $1,055,000.00
Funder: Australian Research Council
View Funded Activity