Epeiric carbonate sedimentation of the Ninmaroo Formation (Upper Cambrian-Lower Ordovician

The Ninmaroo Formation comprises ooid, peloid, flat-pebble conglomerate, skeletal, and mixed carbonate lithofacies, terrigenous sandstones, and a late diagenetic crystalline dolostone lithofacies. This dataset from the Australian Ocean Data Network describes sedimentation in a broad, shallow epicontinental sea under normal marine, saline, and evaporitic conditions, with lithofacies patterns indicating two regressive depositional sequences. The record was last updated on 2026-06 04.

Use Cases

• Classifying carbonate lithofacies based on described sediment types like ooid, peloid, and skeletal sands.
• Modeling paleoenvironmental conditions based on described normal marine, saline, and evaporitic settings.
• Analyzing cyclic sedimentation patterns likely driven by repeated storm shoaling events.
• Reconstructing depositional sequences based on described regressive patterns and barrier progradation.

Strengths

• Detailed geological description of multiple lithofacies and depositional environments.
• Specific temporal context provided (Upper Cambrian-Lower Ordovician).
• Clear spatial context provided (Georgina Basin).

Limitations

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

Provenance

Source

Australian Ocean Data Network

Collection Method

Geological field study and analysis.

Time Range

Upper Cambrian-Lower Ordovician

Freshness

Last updated 2026-06-04 06:40:30.839880; freshness should be verified.

Geography

Georgina Basin