Arrinthrunga Formation: Upper Cambrian Carbonate Sedimentology in Central Australia

The Arrinthrunga Formation is a complex Upper Cambrian carbonate and mixed carbonate-siliciclastic sequence deposited in an extensive epeiric sea in the Georgina Basin, central Australia. The dataset, provided by the Australian Ocean Data Network, describes depositional environments including algal flats, hypersaline lagoons, peloid shoals, and evaporite pans, culminating in a karst erosion surface. The record was last updated on 2026-04-10.

Use Cases

• Modeling paleoenvironmental conditions based on described evaporite and hypersaline lagoon sequences.
• Analyzing carbonate lithology distribution based on the control exerted by filamentous algae mentioned in the description.
• Studying sequence stratigraphy based on described transgression-regression cycles and shoaling sedimentation events.
• Reconstructing depositional facies based on described algal bioherms, peloid-ooid sands, and algal mats.

Strengths

• Detailed geological description of a specific Upper Cambrian formation.
• Provides a temporal context with a last update date of 2026-04-10.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect geographic bias inherent to data_gov_au, focusing solely on the Georgina Basin.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely compiled from geological field studies and analysis.

Time Range

Upper Cambrian period.

Freshness

Last updated 2026-04-10 19:57:45.119059; freshness should be verified.

Geography

Georgina Basin, central Australia.