Product catalogue
Levelled surface sediment geochemistry data for the North Australian Craton
Australia has a significant number of surface sediment geochemical surveys that have been undertaken by industry and government over the past 50 years. These surveys represent a vast investment and have up to now only been able to be used in isolation, independently from one another. The key to maximising the full potential of these data and the information they provide for mineral exploration, environmental management and agricultural purposes is using all the surveys together, seamlessly. These disparate geochemical surveys not only sampled various landscape elements and analysed a range of size fractions, but also used multiple analytical techniques, instrument types and laboratories. The geochemical data from these surveys require levelling to eliminate, as much as possible, non-geological variation. Using a variety of methodologies, including reanalysis of both international standards and small subsets of samples from previous surveys, we have created a seamless surface geochemical map for northern Australia, from nine surveys with 15,605 samples. We tested our approach using two surveys from the southern Thomson Orogen, which demonstrated the successful removal of inter-laboratory and other analytical variation. Creation of the new combined and levelled northern Australian dataset paves the way for the application of statistical and data analytics techniques, such as principal component analysis and machine learning, thereby maximising the value of these legacy data holdings. The methodology documented here can be applied to additional geochemical datasets as they become available.
Simple
Identification info
- Date (Creation)
- 2020-06-10
- Date (Publication)
- 2020-07-16T06:29:24
- Citation identifier
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Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/140055
- Citation identifier
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Digital Obejct Identifier/http://dx.doi.org/10.11636/Record.2020.017
- Cited responsible party
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Role Organisation / Individual Name Details Author Main, P.T.
Author Champion, D.C.
- Name
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Record
- Issue identification
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RECORD 2020/017
- 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 Main, P.T.
Resource provider Minerals, Energy and Groundwater Division
- Spatial representation type
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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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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GEOCHEMISTRY
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- Keywords
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EFTF
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- Keywords
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Exploring For The Future
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- Keywords
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North Australian Craton
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- Keywords
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Geochemistry
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- Keywords
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Levelled data
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- Keywords
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Regolith
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- Keywords
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Surface Sediment
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- Keywords
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Geochemical Survey
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Download the Record (pdf) [2.4 MB]
Download the Record (pdf) [2.4 MB]
- Distribution format
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pdf
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- OnLine resource
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Levelled data [7.5 MB]
Levelled data [7.5 MB]
- Distribution format
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zip xlsx
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Resource lineage
- Statement
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This data release includes data that has previously been released and subsequently modified, these are:
• NGSA ( https://pid.geoscience.gov.au/dataset/ga/82869)
• NAGS ( https://pid.geoscience.gov.au/dataset/ga/120116)
• Hedleys creek ( https://pid.geoscience.gov.au/dataset/ga/13739)
• Seigal ( https://pid.geoscience.gov.au/dataset/ga/13738)
• Mammoth Mines ( https://pid.geoscience.gov.au/dataset/ga/13899)
• George Town (data can be found at https://portal.ga.gov.au/)
• Cape York (data can be found at https://portal.ga.gov.au/)
• GSWA - Balanggarra ( http://dmpbookshop.eruditetechnologies.com.au/product/regolith-chemistry-of-the-balanggarra-area-north-kimberley-geographical-product-n14bczp.do]=)
• GSWA - Bunuba and Yuriyangem-Taam ( http://dmpbookshop.eruditetechnologies.com.au/product/regolith-chemistry-of-the-bunuba-and-yuriyangem-taam-areas-south-kimberley.do)
• GSWA - Dambimangari ( http://dmpbookshop.eruditetechnologies.com.au/product/regolith-chemistry-of-the-dambimangari-area-west-kimberley-geographical-product-n15af1zp.do)
• GSQ - Cape York ( https://qdexguest.dnrm.qld.gov.au/portal/site/qdex/search?REPORT_ID=99246).
The data release document is an updated and modified version of the Exploring for the Future extended abstract ( https://pid.geoscience.gov.au/dataset/ga/133667).
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/a4ead74f-a2aa-4f3f-bb58-dfa7f3524e7b
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Main, P.T.
Type of resource
- Resource scope
- Document
- Name
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GA Publication: Record
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
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eCatId/140055
- Metadata linkage
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https://ecat.ga.gov.au:80/geonetwork/srv/eng/catalog.search#/metadata/a4ead74f-a2aa-4f3f-bb58-dfa7f3524e7b
- Date info (Creation)
- 2020-06-10T02:08:18
- Date info (Revision)
- 2020-06-10T02:08:18
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
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
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https://pid.geoscience.gov.au/dataset/ga/140055