Upper Cambrian Carbonate Stratigraphy In The Georgina Basin

Arrinthrunga Formation documents a complex carbonate sequence deposited in an extensive, intermittently emergent epeiric sea under warm arid conditions. The dataset describes lithologies like algal-derived peloid lime-muds, gypsiferous algal mats, and halite evaporite pans, detailing a history of transgression, regression, and karst formation. It is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Model paleoenvironmental conditions using described lithologies like algal bioherms and ooid sands to infer water depth and energy.
• Analyze sequence stratigraphy by tracing the described transgressive-regressive cycles and karst surfaces.
• Study evaporite formation by examining data on hypersaline lagoons and halite evaporite pans under arid climate conditions.
• Reconstruct depositional facies distribution from descriptions of prograding shoals, algal flats, and terrigenous sands.

Strengths

• Detailed descriptive text covering multiple depositional cycles and paleoenvironmental shifts.
• Focus on a specific geological formation (Arrinthrunga Formation) and time period (Upper Cambrian).

Limitations

• No structured data columns or sample data are available, limiting quantitative analysis.
• Primary data format is PDF/HTML, requiring significant manual extraction for computational use.

Provenance

Source

Australian Ocean Data Network

Collection Method

null

Time Range

Upper Cambrian period

Freshness

Updated April 2026.

Geography

Georgina Basin, central Australia