Interpreted Bedrock Geology Lines Covering 30% Of Western Australia

A 2026 compilation provides 1:100,000 scale interpreted bedrock geology lines for Western Australia. The dataset covers approximately 30% of the state, focusing on Archean and Proterozoic bedrock areas, and is based on nine regional geological packages compiled between 2014 and 2017. It is maintained by the Geological Survey of Western Australia with weekly nomenclature updates.

Use Cases

• Analyze pre-Cenozoic bedrock structures from the linear structure layer for tectonic modeling.
• Map lithostratigraphic unit relationships using the nomenclature and hierarchy from the Explanatory Notes System.
• Integrate geological line features with geophysical datasets like magnetics and gravity for regional exploration targeting.
• Trace the source package attribute of each feature to assess compilation methodology across different project areas.

Strengths

• Covers approximately 30% of Western Australia's land area.
• Based on nine detailed regional geological packages compiled from 2014 to 2017.
• Nomenclature and stratigraphic relationships are updated weekly via the Explanatory Notes System.
• Spatial integrity of the original source geological packages is preserved.

Limitations

• Seamless interpretation is not executed along the edges of separately compiled project areas, creating potential discontinuities.
• Coverage is limited to areas of exposed Archean and Proterozoic bedrock, excluding other geological domains.
• The dataset is a compilation of existing interpretations, not primary field mapping data.

Provenance

Source

Geological Survey of Western Australia's published Geological Information Series and Geological Exploration Packages.

Collection Method

Compilation based on extensive fieldwork, interpretation of geophysical datasets, remote sensing imagery, seismic profiles, drilling, and previous geological mapping.

Time Range

Source packages compiled between 2014 and 2017.

Freshness

Last updated March 2026.

Geography

Western Australia, focusing on areas of exposed Archean and Proterozoic bedrock.