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

Upper Cambrian-Lower Ordovician sedimentary data for the Ninmaroo Formation in the Georgina Basin, describing lithofacies and depositional environments. The dataset, provided by Geoscience Australia Data, comprises descriptions of ooid, peloid, skeletal, and dolostone lithofacies, as well as terrigenous sandstones. It details sedimentation in a shallow epicontinental sea under normal marine to evaporitic conditions, with cyclic sedimentation patterns and two regressive sequences.

Use Cases

• Modeling ancient shallow marine depositional environments based on described lithofacies patterns.
• Analyzing cyclic sedimentation and storm shoaling events in epeiric carbonate sequences.
• Studying the impact of increasing salinity and evaporitic conditions on carbonate facies and faunal restriction.
• Reconstructing paleogeography and shelf evolution from described regressive sequences and barrier complex progradation.

Strengths

• Detailed geological description of multiple carbonate and terrigenous lithofacies.
• Specific temporal context (Upper Cambrian-Lower Ordovician) and geographic location (Georgina Basin).
• Clear description of depositional environments and sequences, including barrier complexes and sabkhas.

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 extraction for computational analysis.

Provenance

Source

Geoscience Australia Data

Time Range

Upper Cambrian-Lower Ordovician

Freshness

Last updated 2026-04-20 02:40:03.130752; freshness should be verified.

Geography

Georgina Basin