Geological Interpretation of Geophysical Features at 1:250,000 Scale

Geological Survey of Victoria provides interpreted geological data derived from airborne magnetic, radiometric, and gravity surveys mapped at a 1:250,000 scale. The dataset includes areas where newer 1:250,000 mapping supersedes older 1:100,000 mapping, such as St Arnaud, Bendigo, and Grampians regions. It is accompanied by related datasets for sub-surface polygons, structural lines, and metamorphism.

Use Cases

• Regional geological mapping based on interpreted magnetic, radiometric, and gravity features.
• Updating older geological maps based on superseding higher-quality 1:250,000 scale data.
• Integrating geological interpretations with sub-surface polygon and structural line datasets.
• Analyzing basement and post-cratonic geological features for specific map areas like Ouyen and Horsham.

Strengths

• Data is derived from combined interpretations of three geophysical survey types: airborne magnetic, radiometric, and gravity.
• Recent 1:250,000 mapping supersedes older 1:100,000 mapping in specified areas, indicating updated content.
• Dataset is accompanied by related datasets for sub-surface polygons, structural lines, miscellaneous lines, and metamorphism.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, focusing on specific Victorian regions.

Provenance

Source

Department of Energy, Environment and Climate Action

Collection Method

Interpretation of airborne magnetic, radiometric, and gravity survey data by the Geological Survey of Victoria.

Freshness

Last updated 2026-04-09 05:12:22.043131; freshness should be verified.

Geography

Victoria, Australia, with specific map areas including St Arnaud, Bendigo, Grampians, Ouyen, and Horsham.