Geophysics (1:250,000), Geological Interpretation of Geophysical Features Polygon

Interpreted geological data from the Geological Survey of Victoria uses combined airborne magnetic, radiometric, and gravity surveys mapped at 1:250,000 scale. The dataset includes superseded mapping for specific areas like St Arnaud, Bendigo, and Grampians, with recent high-quality 1:250,000 mapping replacing older 1:100,000 data. It is accompanied by related datasets for sub-surface polygons, structural lines, and metamorphism.

Use Cases

• Regional geological mapping based on combined airborne magnetic, radiometric, and gravity survey interpretations.
• Mineral exploration targeting using interpreted geophysical features to understand subsurface geology.
• Updating legacy geological maps by superseding older 1:100,000 scale mapping with newer 1:250,000 scale data.
• Integrating geological interpretations with related datasets on sub-surface structures and metamorphism for comprehensive analysis.

Strengths

• Data is derived from multiple geophysical survey types: airborne magnetic, radiometric, and gravity.
• Specific map areas (e.g., St Arnaud SJ54-4, Bendigo SJ55-1) are documented as superseding older mapping.
• Dataset is accompanied by related geological data layers for sub-surface polygons and structural lines.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geological Survey of Victoria, Department of Energy, Environment and Climate Action.

Collection Method

Interpretation of combined airborne magnetic, radiometric, and gravity survey data.

Freshness

Last updated 2026-04-09 00:44:54.961978; freshness should be verified.

Geography

Victoria, Australia, with specific mentions of areas like St Arnaud, Dunolly, Charlton, Wedderburn, Ararat, Bendigo, Heathcote, Nagambie, Balmoral, Horsham, Grampians, and Ouyen.