Western Australia Regolith Map With Nine Geological Units

A 2026-updated digital regolith map of Western Australia at a 1:500,000 scale, featuring nine geological units including exposed outcrop, colluvium, and alluvium. The dataset is based on published geological maps from the Geological Survey of Western Australia, simplified for display at the specified scale. Data is provided with a 500-meter grid spacing and held in GDA decimal degrees.

Use Cases

• Classify landforms across Western Australia using the nine geological unit categories (exposed, colluvium, alluvium, etc.) for geological mapping.
• Analyze the spatial distribution of regolith types like sandplain, calcrete, and residual units to inform mineral exploration models.
• Identify areas of mining activity in relation to surrounding regolith units such as coastal or lacustrine deposits for environmental impact studies.
• Integrate the 500-meter grid data with other geophysical layers using the provided spatial coordinates (GDA decimal degrees) for regional resource assessment.

Strengths

• Derived from authoritative Geological Survey of Western Australia (GSWA) 1:250,000 and 1:100,000 series geological maps.
• Contains nine distinct, defined geological unit categories for analysis.
• Maintained with a consistent 500-meter grid spacing across the coverage area.
• Updated recently, with a last modified date of March 2026.

Limitations

• Data is a preliminary edition and may be subject to future revisions or refinements.
• The map is a simplified representation of more detailed source maps, potentially omitting finer geological complexities.

Provenance

Source

Department of Energy, Mines, Industry Regulation and Safety (Chief Geoscientist).

Collection Method

Simplification and generalization of published GSWA 1:250,000 and 1:100,000 series geological maps for display at 1:500,000 scale.

Time Range

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Freshness

Last updated March 2026.

Geography

Western Australia.