Authors / CoAuthors
Murr, J. | Skirrow, R.G. | Schofield, A. | Goodwin, J. | Coghlan, R.A. | Highet, L.M. | Doublier, M.P. | Duan, J. | Czarnota, K.
Abstract
<p>Iron oxide-copper-gold (IOCG) mineral systems are a desirable undercover exploration target due to their large alteration footprint and potentially high metal content. To assist in understanding the potential for IOCG mineral systems beneath cover in the Tennant Creek to Mount Isa region as part of Exploring for the Future, a predictive mineral potential assessment has been undertaken using a knowledge-based, mineral systems approach.<p>This mineral potential assessment uses a 2D, GIS-based workflow to qualitatively map four key mineral system components: (1) Sources of metals, fluids and ligands, (2) Energy to drive fluid flow, (3) Fluid flow pathways and architecture, and (4) Deposition mechanisms, such as redox or chemical gradients. For each of these key mineral system components theoretical criteria, representing important ore-forming processes, were identified and translated into mappable proxies using a wide range of input datasets. Each of these criteria are weighted and combined using an established workflow to produce the final map of IOCG potential, all of which is well documented in the accompanying IOCG Assessment Criteria Table.<p>Two assessments have been undertaken. The first is a comprehensive assessment containing all available geospatial information and is highly reliant on the level of geological knowledge. As such, it preferentially highlights mineral potential in well-understood areas, such as outcropping regions and performs less well in covered areas, where there is a greater likelihood of data gaps. The second assessment utilises only datasets which can be mapped consistently across the assessment area. As such, these are predominately based on geophysical data and are more consistent in assessing exposed and covered areas. However, far fewer criteria are included in this assessment.<p>Both assessment highlight new areas of interest in underexplored regions, of particular interest a SW-NE corridor to the East of Tennant Creek of moderate/high potential in the Barkly region. This corridor extends to an area of moderate potential in the Murphy Inlier region near the Gulf of Carpentaria on the NT/QLD border.
Product Type
dataset
eCat Id
130587
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Resource provider
Point of contact
- Contact instructions
- MEG
Digital Object Identifier
Keywords
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCESECONOMICSINFORMATION AND COMPUTING SCIENCES
- ( Project )
-
- EFTF
- ( Theme )
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- Resources
- ( Theme )
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- Minerals
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- Geoscience Australia
- ( Theme )
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- Exploring for the Future
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- Published_External
Publication Date
2019-09-02T03:44:21
Creation Date
Security Constraints
Legal Constraints
Status
completed
Purpose
This data release is intended to supply third parties to all the input and output data produced conjunction with the Tennant Creek- Mt Isa IOCG mineral potential assessment. Sufficient documentation is provided so that third parties can re-create and modify the process to produce the same or similar results.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
The data for this assessment have been sourced from geological, geophysical and geochemical datasets (see attached table and references). The input datasets produced and used in this assessment were sourced from Geoscience Australia databases and are publicly available via the Geoscience Australia website.Derivative products of the input datasets were developed for the assessment (e.g. buffered zones). Decisions concerning the development of these derivatives, such as the selection of buffer distances and assignment of cut-off values, were made subjectively based on the scientific judgement of the assessment team. Further information regarding the datasets used, data processing steps, criteria weightings and scientific rationale can be found in the accompanying metadata, attached data table.Scripts to automate GIS workflow (not available in this data package, to be released separately as a git) based off scripts by Coghlan (2015).Coghlan, R.A., 2015. Nickel-Mineral-Potential-Modelling (Version 1.0) [Source Code]. Available at https://github.com/GeoscienceAustralia/Nickel-Mineral-Potential-Modelling
Parent Information
Extents
[-22.5531, -13.1116, 130.2539, 142.1191]
Reference System
GDA94 (EPSG:4283)
Spatial Resolution
Service Information
Associations
Mapping iron oxide Cu-Au (IOCG) mineral potential in Australia using a knowledge-driven mineral systems-based approach
eCat Identifier - 130251,
UUID - 67c3d62f-6345-437e-b64d-e2ff0a2abf50
Association Type - operatedOnBy
Tennant Creek – Mt Isa IOCG Mineral Potential Assessment WMS
eCat Identifier - 145444,
UUID - 8cdcaa3d-6e4b-4ec7-94b3-221407bd771f
Association Type - operatedOnBy
Tennant Creek – Mt Isa IOCG Mineral Potential Assessment WMTS
eCat Identifier - 145445,
UUID - eb94f324-9ebd-481e-80f3-4dd5cd4ab138
Association Type - operatedOnBy
Tennant Creek – Mt Isa IOCG Mineral Potential Assessment WCS
eCat Identifier - 145446,
UUID - 2df2a097-00cb-4971-88dd-0ae967d2f36b
Downloads and Links
Download the data package [98 MB]
Related product: Mapping iron oxide Cu-Au (IOCG) mineral potential in Australia using a knowledge-driven mineral systems-based approach
Tennant Creek – Mt Isa IOCG Mineral Potential Assessment WMS
Tennant Creek – Mt Isa IOCG Mineral Potential Assessment WMTS
Tennant Creek – Mt Isa IOCG Mineral Potential Assessment WCS
Source Information