Australia Radiometric Grids of Potassium, Thorium, and Uranium at 100m Resolution

Spatially continuous national grids of potassium, thorium, and uranium across Australia at a nominal 100-meter cell size. The dataset is derived from airborne radiometric survey data compiled by Geoscience Australia, with machine-learning infill applied to areas lacking coverage. The grids were last updated in May 2026.

Use Cases

• Modeling geochemical baselines based on national-scale potassium, thorium, and uranium concentrations.
• Assessing mineral exploration potential based on machine-learning infilled radiometric values.
• Integrating radiometric data with geological and environmental predictor variables for spatial analysis.
• Creating consistent national maps for environmental monitoring based on the 100-meter grid.

Strengths

• Provides national coverage of Australia at a consistent 100-meter grid cell size.
• Combines measured airborne radiometric data with machine-learning infill using a convolutional neural network.
• Incorporates recent survey coverage for Tasmania in addition to the national Radiometric Map of Australia (radmap v4).

Limitations

• The spatial density and effective resolution of the underlying survey data vary across regions.
• In infilled areas, values are derived from statistical relationships with environmental predictors and may introduce dependencies in analyses.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Derived from compiled airborne radiometric survey data (Radiometric Map of Australia v4) with additional recent surveys for Tasmania, using a convolutional neural network combined with residual correction for infill.

Freshness

Last updated 2026-05-19 22:37:13.355283

Geography

Australia