Little-deformed Cretaceous sedimentary rocks underlie 1,500,000 km² of eastern Australia. Depositional environments range from freshwater to shallow marine, with sequences derived from nearby basement rises and Cretaceous volcanics. Geoscience Australia Data provides this geological description, which was last updated in April 2026.
Use Cases
- Modeling epicontinental sea deposition based on described sequences and environmental changes.
- Analyzing sediment provenance shifts from quartz-rich to quartz-poor sequences over the Cretaceous period.
- Studying transgressive-regressive cycles and their correlation to eustatic sea-level changes mentioned in the description.
Strengths
- Covers a vast spatial area of 1,500,000 km² in eastern Australia.
- Describes a detailed temporal sequence spanning approximately 20 million years of the Cretaceous period.
- Includes specific sediment thickness measurements, with up to 2000 meters preserved in the Eromanga 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 presented in PDF/HTML formats, which may require extraction for computational analysis.
Provenance
- Source
- Geoscience Australia Data
- Time Range
- Cretaceous period (spanning approximately 20 million years)
- Freshness
- Last updated 2026-04-30 13:31:08.586789; freshness should be verified.
- Geography
- Eromanga and Surat Basins, eastern Australia