Regional Geology and Stratigraphy of Pedirka and Eromanga Basins

AFER project interpretations reassigned the Lower and Middle Triassic Walkandi Formation to the Pedirka Basin and identified the Upper Triassic Peera Peera Formation as the start of deposition in the western Eromanga Basin. The dataset contains geological interpretations from biostratigraphic and reprocessed seismic data analysis of Permian to Cretaceous sedimentary sequences. It was produced by the Australia’s Future Energy Resources project under the Exploring For The Future program and last updated in April 2026.

Use Cases

• Map regional unconformities using interpreted seismic horizons and palynological age-control data.
• Analyze depositional environment changes from braided to meandering river systems described in the fluvial-lacustrine sediment records.
• Evaluate coal-bearing strata thickness and distribution within Permian to Jurassic flood-plain sequences for resource assessment.
• Correlate stratigraphic units like the Walkandi and Peera Peera Formations to revise basin boundary definitions.

Strengths

• Analysis covers a long geological time range from early Paleozoic to Late Cretaceous.
• Interpretations integrate multiple data types: biostratigraphic analysis and reprocessed seismic data.
• Project initiated a review of previously established basin definitions across the greater Pedirka/western Eromanga area.

Limitations

• Specific row counts, column details, and sample data are unavailable.
• Data is delivered as a PDF, limiting machine-readability and direct analysis.
• Geographic coverage is restricted to the Pedirka and western Eromanga basins region of Australia.

Provenance

Source

Australian Ocean Data Network, under the Exploring For The Future program.

Collection Method

Interpretation of new biostratigraphic data and reprocessed seismic data.

Time Range

Covers geological periods from early Paleozoic to Late Cretaceous.

Freshness

Last updated in April 2026.

Geography

Pedirka and western Eromanga basins region, Australia.