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

Eastern Australia's Cretaceous sedimentary rocks underlie an area of 1,500,000 km². The dataset from Geoscience Australia describes depositional environments ranging from freshwater to shallow marine, with sequences spanning the Neocomian to Cenomanian ages. Up to 2000 meters of sediment is preserved in the Eromanga Basin and 700 meters in the Surat Basin.

Use Cases

• Modeling ancient epicontinental sea environments based on described depositional cycles
• Analyzing sediment provenance shifts from quartz-rich to quartz-poor sequences
• Studying the impact of regional tectonic tilt and sea-level changes on basin stratigraphy
• Correlating geological sequences using the described transgressive-regressive cycles over 20 million years

Strengths

• Covers a vast geographic area of 1,500,000 km² in eastern Australia
• Describes sediment thickness up to 2000 meters in the Eromanga Basin
• Includes temporal context for depositional cycles spanning about 20 million years

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data freshness should be verified despite a last updated date of 2026-04-20

Provenance

Source

Geoscience Australia Data

Time Range

Cretaceous period (Neocomian to Cenomanian ages)

Freshness

Last updated 2026-04-20 02:59:06.393317

Geography

Eromanga and Surat Basins, eastern Australia