Geological zones of contact metamorphism interpreted from geophysical interpretation (1:25

Geophysical interpretations of airborne magnetic, radiometric, and gravity survey data define areas of contact and regional metamorphism in Victoria, Australia. The Geological Survey of Victoria collected this data, which supersedes older 1:100,000 mapping in specific regions like St Arnaud and Bendigo. This dataset was last updated on April 9, 2026.

Use Cases

• Map regional metamorphic zones based on combined airborne magnetic, radiometric, and gravity interpretations.
• Identify areas of contact metamorphism for mineral exploration targeting.
• Update geological maps by superseding older 1:100,000 scale mapping with newer 1:250,000 data.
• Analyze the relationship between geophysical features and metamorphic style for academic research.

Strengths

• Derived from multiple high-quality geophysical survey types: airborne magnetic, radiometric, and gravity.
• Supersedes older 1:100,000 mapping in several defined areas, indicating improved detail.
• Accompanied by related datasets for geological polygons, boundaries, 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.
• The description specifies map sheet areas but does not provide a complete geographic bounding box.

Provenance

Source

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

Collection Method

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

Time Range

null

Freshness

Last updated 2026-04-09 00:35:26.132548; freshness should be verified.

Geography

Victoria, Australia, specifically referencing map sheets like St Arnaud, Dunolly, Charlton, Wedderburn, Ararat, Bendigo, Heathcote, Nagambie, Balmoral, Horsham, Ouyen, and Grampians.