Eastern Australia 3D Geological and Hydrogeological Surfaces Update, Version 2.0

Geoscience Australia's Exploring for the Future Program presents the second iteration of 3D geological and hydrogeological surfaces across eastern Australian basins. The work updates surface extents and thicknesses for 18 region-wide hydrogeological units, incorporating new borehole, seismic, and airborne electromagnetic data. This model provides a consistent hydrogeological framework from the Gulf of Carpentaria to the Bight, Otway, and Gippsland basins.

Use Cases

• Model regional groundwater flow based on updated 3D hydrogeological unit surfaces.
• Support resource management decisions using the unified geological framework across basin borders.
• Conduct integrated resource assessments leveraging the regional geological context.
• Reconcile legacy and contemporary stratigraphic studies under a common framework.

Strengths

• Covers a large study area extending from the Gulf of Carpentaria to southern offshore basins.
• Updates 18 region-wide hydrogeological units with new data.
• Integrates multiple data types including legacy borehole data, 2D seismic, and airborne electromagnetic (AEM) data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data for Triassic to Permian and older basins is provided without geological and hydrogeological unit sub-division.

Provenance

Source

Geoscience Australia Data

Collection Method

Constructed using legacy borehole data, 2D seismic, and airborne electromagnetic (AEM) data, with new data from petroleum, CSG, stratigraphic, mineral, and water boreholes.

Freshness

Last updated 2026-04-30 14:44:36.801754; freshness should be verified.

Geography

Eastern Australian basins, from the offshore Gulf of Carpentaria in the north to the offshore Bight, Otway, and Gippsland basins in the south, and from the western edge of the Great Artesian Basin to the eastern coastline.