Western Australia 1:500,000 Scale Linear Geological Structures

Western Australia's 1:500,000 State linear structures layer is a digital geological map component detailing pre-Cenozoic structural features. The compilation integrates published geological maps from 1:100,000 to 1:1,000,000 scales with geophysical and remote sensing data. It is maintained by the Department of Energy, Mines, Industry Regulation and Safety.

Use Cases

• Analyze pre-Cenozoic structural lineaments for regional tectonic modeling using the linear structures layer.
• Integrate this layer with the State interpreted bedrock geology (DMIRS-016) for comprehensive geological interpretation.
• Validate concealed structures attributed as older than the overlying pre-Cenozoic unit.
• Correlate linear features with geophysical datasets like magnetics and radiometrics referenced in the compilation.

Strengths

• Compiled from authoritative sources including published Geological Series maps by GSWA and GA.
• Enhanced with multiple data types: geophysical datasets, remote sensing imagery, seismic profiles, and drilling.
• Data is held in GDA decimal degrees, a standard geodetic coordinate system.

Limitations

• The dataset focuses on pre-Cenozoic structures, limiting direct analysis of more recent geological features.
• Column definitions and sample data are unavailable, hindering immediate understanding of attribute schema.
• License is Creative Commons Non-Commercial (cc-nc), restricting commercial applications.

Provenance

Source

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

Collection Method

Compilation from published geological maps and enhancement with geophysical data, remote sensing, seismic profiles, and drilling.

Time Range

Focus on pre-Cenozoic geological periods.

Freshness

Last updated March 2026.

Geography

Western Australia.