Product catalogue
Digital soil mapping of lithium in Australia
<div>With a higher demand for lithium (Li), a better understanding of its concentration and spatial distribution is important to delineate potential anomalous areas. This study uses a digital soil mapping framework to combine data from recent geochemical surveys and environmental covariates to predict and map Li content across the 7.6 million km2 area of Australia. Soil samples were collected by the National Geochemical Survey of Australia at a total of 1315 sites, with both top (0–10 cm depth) and bottom (on average 60–80 cm depth) catchment outlet sediments sampled. We developed 50 bootstrap models using a Cubist regression tree algorithm for both depths. The spatial prediction models were validated on an independent Northern Australia Geochemical Survey dataset, showing a good prediction with an RMSE of 3.82 mg kg-1 for the top depth. The model for the bottom depth has yet to be validated. The variables of importance for the models indicated that the first three Landsat bands and gamma radiometric dose have a strong impact on Li prediction. The bootstrapped models were then used to generate digital soil Li prediction maps for both depths, which could select and delineate areas with anomalously high Li concentrations in the regolith. The map shows high Li concentration around existing mines and other potentially anomalous Li areas. The same mapping principles can potentially be applied to other elements. </div>
<b>Citation:</b>
Ng, W., Minasny, B., McBratney, A., de Caritat, P., and Wilford, J.: Digital soil mapping of lithium in Australia, <i>Earth Syst. Sci. Data</i>, 15, 2465–2482, https://doi.org/10.5194/essd-15-2465-2023, <b>2023</b>.
Simple
Identification info
- Date (Creation)
- 2022-09-22T16:00:00
- Date (Publication)
- 2023-07-20T01:55:20
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/147254
- Cited responsible party
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Role Organisation / Individual Name Details Author Ng, W.
External Contact Author Minasny, B.
External Contact Author McBratney, A.
External Contact Author de Caritat, P.
Internal Contact Author Wilford, J.
Internal Contact Publisher Copernicus Publications
External Contact
- Name
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Earth System Science Data
- Issue identification
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Vol 15, issue 6
- Page
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2165-2482
- Purpose
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Publication in peer reviewed scientific journal
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Resource provider Minerals, Energy and Groundwater Division
External Contact Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Main, P.
MEG Internal Contact
- Spatial representation type
- Topic category
-
- Geoscientific information
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
- Project
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National Geochemical Survey of Australia
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- Project
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EFTF – Exploring for the Future
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- Keywords
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digital soil mapping
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- Keywords
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lithium
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- Keywords
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machine learning
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- Keywords
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critical element
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- theme.ANZRC Fields of Research.rdf
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Inorganic geochemistry
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Soil chemistry and soil carbon sequestration (excl. carbon sequestration science)
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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
- Addressee
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Role Organisation / Individual Name Details User Any
- Use constraints
- License
- Use constraints
- Other restrictions
- Other constraints
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© Author(s) 2023
Resource constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Name
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AGSO Research Newsletter
- Classification
- Unclassified
- Classification system
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Australian Government Security Classification System
Associated resource
- Association Type
- Had derivation
- Title
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National Geochemical Survey of Australia: The Geochemical Atlas of Australia
- Citation identifier
- 71973
- Citation identifier
- a4a1ac2e-0a2c-653b-e044-00144fdd4fa6
Associated resource
- Association Type
- Had derivation
- Title
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Geochemical map of Australia (First Edition) - Li (lithium) series
- Citation identifier
- 71889
- Citation identifier
- a3ac05d0-c761-0fe3-e044-00144fdd4fa6
- 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 facsimile
- OnLine resource
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Link to Journal
Link to Journal
- Distribution format
-
Resource lineage
- Statement
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<div>Using data from the National Geochemical Survey of Australia http://dx.doi.org/10.11636/Record.2011.020 </div>
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/ec6b83e6-3275-48a6-9b36-1f5ae30f808d
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Owner Main, P.
MEG Internal Contact Point of contact Main, P.
MEG Internal Contact
Type of resource
- Resource scope
- Document
- Name
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Journal Article / Conference Paper
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/147254
- Date info (Creation)
- 2023-07-20T01:27:04
- Date info (Revision)
- 2023-07-20T01:27:04
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
- http://pid.geoscience.gov.au/dataset/ga/122551