Ninmaroo Formation Carbonate Lithofacies and Depositional Environments

The Georgina Basin dataset details the epeiric carbonate sedimentation of the Upper Cambrian-Lower Ordovician Ninmaroo Formation. It describes lithofacies including ooid, peloid, skeletal, and dolostone units within regressive depositional sequences. The Australian Ocean Data Network published this geological study, last updated in April 2026.

Use Cases

• Classify carbonate lithofacies such as ooid, peloid, and skeletal sands from descriptive text for facies modeling.
• Analyze depositional environment sequences (e.g., barrier complex, semi-emergent shoals, sabkhas) to reconstruct paleogeography.
• Study the impact of salinity and tidal circulation on skeletal versus nonskeletal carbonate sedimentation patterns.
• Identify regressive depositional sequences and progradation directions from lithofacies pattern descriptions.

Strengths

• Detailed description of multiple carbonate lithofacies and depositional environments.
• Clear temporal context for the Upper Cambrian-Lower Ordovician geological period.

Limitations

• No structured data columns or sample data are available; information is contained in descriptive PDF/HTML documents.
• Unknown sample size or spatial granularity for the described lithofacies and sequences.

Provenance

Source

Australian Ocean Data Network

Collection Method

Geological field study and analysis published as external journal content.

Time Range

Upper Cambrian to Lower Ordovician period.

Freshness

Last updated in April 2026.

Geography

Georgina Basin, Australia.