Cretaceous Sedimentary Rocks of the Eromanga and Surat Basins in Eastern Australia

The Australian Ocean Data Network provides data on Cretaceous sedimentary rocks underlying 1,500,000 km² of eastern Australia. The description details depositional environments from freshwater to marine, sequences derived from different sources, and transgressive-regressive cycles over about 20 million years. The dataset was last updated on 2026-06 04.

Use Cases

• Modeling ancient epicontinental sea environments based on described depositional sequences.
• Analyzing sediment provenance and composition shifts based on described quartz-rich and quartz-poor sequences.
• Studying the impact of sea-level changes on shallow marine systems based on described transgressive-regressive cycles.
• Correlating stratigraphic sequences between the Eromanga and Surat Basins based on described thicknesses and regional tilt.

Strengths

• Covers a vast geographic area of 1,500,000 km² in eastern Australia.
• Describes a detailed temporal sequence spanning approximately 20 million years during the Cretaceous.
• Includes specific sediment thickness measurements, with up to 2000 m preserved in the Eromanga Basin and 700 m in the Surat Basin.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided as PDF/HTML documents, which may require extraction for computational analysis.

Provenance

Source

Australian Ocean Data Network via data.gov.au

Collection Method

Likely compiled from geological surveys and research.

Time Range

Cretaceous period, specifically Neocomian to Cenomanian stages.

Freshness

Last updated 2026-06-04 07:17:21.475214; freshness should be verified.

Geography

Eromanga and Surat Basins in eastern Australia.