Western Australia Bedrock Geology Map at 1:500,000 Scale

Western Australia's 1:500,000 State interpreted bedrock geology layer is a digital compilation by the Department of Energy, Mines, Industry Regulation and Safety. It integrates published geological maps with geophysical and remote sensing data, using the GSWA Explanatory Notes System for lithostratigraphic units. The data is stored in GDA94 decimal degrees and was last updated in March 2026.

Use Cases

• Analyze lithostratigraphic unit hierarchy for regional geological modeling and resource assessment.
• Integrate interpreted bedrock polygons with geophysical datasets like magnetics and radiometrics for subsurface analysis.
• Use the GSWA Explanatory Notes System nomenclature to standardize geological unit classification across studies.

Strengths

• Compilation integrates multiple authoritative sources, including published 1:100,000 and 1:250,000 Geological Series maps.
• Data has been locally modified using diverse datasets like ASTER and LANDSAT imagery, seismic profiles, and drilling information.
• Available in multiple geospatial formats including GeoJSON, SHP, and Geopackage for interoperability.

Limitations

• Specific column structure, row count, and dataset size are not provided in the metadata.
• The CC-NC (Creative Commons Non-Commercial) license restricts commercial applications.

Provenance

Source

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

Collection Method

Compiled from published geological maps and modified using geophysical data, remote sensing, seismic profiles, and drilling.

Time Range

null

Freshness

Last updated March 2026.

Geography

Western Australia.