Product catalogue
Application of Multi-Scale Magnetotelluric Data to Mineral Exploration: An Example from the East Tennant Region, Northern Australia
The footprint of a mineral system is potentially detectable at a variety of scales, from ore deposits to the Earth’s crust and lithosphere. Magnetotellurics is one of few techniques that can provide multi-scale datasets to understand mineral systems. We have used long-period data from the Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) as a first-order reconnaissance survey to resolve large-scale lithospheric architecture for mapping areas of mineral potential in northern Australia. The 3D resistivity model reveals a broad conductivity anomaly extending from the Tennant Region to the Murphy Province in the lower crust and upper mantle, representing a potential fertile source region for mineral systems. Results from higher-resolution infill magnetotelluric survey reveal two prominent conductors in the resistive host whose combined responses result in the lithospheric-scale conductivity anomaly mapped in the AusLAMP model. Most importantly, conductive structures indicate a “favorable” crustal architecture linking the lower, fertile source regions with depositional sites in the upper crust. This observation strongly suggests that the major faults are deep-penetrating structures that potentially acted as pathways for transporting metalliferous fluids to the upper crust where they could form mineral deposits. This result and its integration with other datasets suggest high prospectivity for major mineral deposits in the vicinity of these major faults. In addition to this contribution, interpretation of high-frequency magnetotelluric data helps characterise cover and assist with stratigraphic drill targeting which, in turn, will validate the models and improve our understanding of basement geology, cover sequences and mineral potential.
This study demonstrates that integration of geophysical data from multi-scale surveys is an effective approach to scale reduction during mineral exploration in covered terranes with limited geological knowledge.
<b>Citation: </b>
Wenping Jiang, Jingming Duan, Michael Doublier, Andrew Clark, Anthony Schofield, Ross C Brodie, James Goodwin, Application of multiscale magnetotelluric data to mineral exploration: an example from the east Tennant region, Northern Australia, <i>Geophysical Journal International</i>, Volume 229, Issue 3, June 2022, Pages 1628–1645, https://doi.org/10.1093/gji/ggac029
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Identification info
- Date (Creation)
- 2022-05-10
- Date (Publication)
- 2023-02-06T04:45:13
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/145177
Identifier
- Codespace
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Digital Obejct Identifier
- Cited responsible party
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Role Organisation / Individual Name Details Author Jiang, W.
MEG Internal Contact Author Duan, J.
MEG Internal Contact Author Doublier, M.
MEG Internal Contact Author Clark, A.
MEG Internal Contact Author Schofield, A.
MEG Internal Contact Author Brodie, R.
MEG Internal Contact Author Goodwin, J.
MEG Internal Contact Publisher Oxford Uni Press
External Contact
- Name
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Geophysical Journal International
- Issue identification
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Vol 229, Issue 3 2022
- Page
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1628 - 1645
- Purpose
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Article to submit to 'Geophysical Journal International'
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Jiang, W.
MEG Internal Contact Resource provider Minerals, Energy and Groundwater Division
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- Geoscientific information
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))
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- As needed
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Product data repository: Various Formats
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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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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© The Author(s) 2022
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Australian Government Security ClassificationSystem
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- 2018-11-01T00:00:00
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- Unclassified
- Language
- English
- Character encoding
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
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Link to Journal Article
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nil
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Article submitted to 'Geophysical Journal International' Vol 229 Issue 3 June 2022 Pages 1628-1645
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
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urn:uuid/b357dda8-c1f1-42e8-a008-7e70301bf6a3
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GeoNetwork UUID
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- English
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- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Owner Jiang, W
MEG Internal Contact
Type of resource
- Resource scope
- Document
- Name
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Journal Articles and Conference Papers
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/145177
- Date info (Creation)
- 2021-02-21T23:15:58
- Date info (Revision)
- 2021-02-21T23:15:58
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
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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
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