Proterozoic Alkaline Igneous Rocks of Australia GIS Compilation

One of five released datasets, this surface geology compilation maps alkaline and related igneous rocks of Proterozoic age across Australia. Geological units are represented as polygon and point geometries, attributed with stratigraphic, age, lithology, and compositional data. The dataset is produced by Geoscience Australia Data and was last updated on 2026-04-12.

Use Cases

• Map the spatial distribution of Proterozoic alkaline provinces based on polygon geometries.
• Analyze rock composition and lithology based on attributed unit information.
• Study the relationship between rock age and body morphology or emplacement type.
• Identify areas with potential for mantle xenoliths or diamonds based on recorded presence.

Strengths

• Part of a five-dataset series covering Archean to Cenozoic time periods.
• Includes both polygon and point geometries for geological units and grouped provinces.
• Attributes contain multiple geological properties like age, lithology, and composition.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Surface geology compilation from source data detailed in Data Quality LINEAGE.

Time Range

Proterozoic age

Freshness

Last updated 2026-04-12 23:15:23.900576; freshness should be verified.

Geography

Australia