Western Australia Bedrock Linear Structures at 1:100,000 Scale

A 1:100,000 scale linear structure layer covering approximately 30% of Western Australia, focusing on exposed Archean and Proterozoic bedrock. The compilation is based on nine regional geological data packages published by the Geological Survey of Western Australia between 2014 and 2017, integrating fieldwork, geophysics, and remote sensing.

Use Cases

• Analyze pre-Cenozoic bedrock structures from the linear structure layer for regional tectonic studies.
• Integrate linear structure data with polygon geology layers using source package attribution for cross-package analysis.
• Map lithostratigraphic unit relationships and hierarchies using nomenclature from the Explanatory Notes System (ENS).
• Assess geological interpretation consistency across nine compiled regional packages, such as Kimberley 2017 and Pilbara 2014.

Strengths

• Covers approximately 30% of Western Australia's land area.
• Compiled from nine authoritative regional geological data packages published by GSWA.
• Spatial integrity of source packages is maintained with only minor topological corrections.
• Attribution is updated to include recent geochronology and correct stratigraphic relationships.

Limitations

• Seamless interpretation is not executed along edges of separately compiled project areas, creating potential discontinuities.
• Coverage is partial (30% of the state) and focused on areas of exposed ancient bedrock.
• Data is derived from interpretations of varying source materials and dates (2014-2017).

Provenance

Source

Geological Survey of Western Australia (GSWA) published Geological Information Series (GIS) and Geological Exploration Packages (GEP).

Collection Method

Interpretation based on extensive fieldwork, geophysical datasets (magnetics, radiometrics, gravity), remote sensing imagery (ASTER, LANDSAT), seismic profiles, drilling, and prior mapping.

Time Range

Pre-Cenozoic bedrock structures; source compilation packages published between 2014 and 2017.

Freshness

Last updated March 2026; underlying source packages date from 2014 to 2017.

Geography

Western Australia, specifically areas of exposed Archean and Proterozoic bedrock across nine regional packages.