Mesozoic Stratigraphy and Palynology of the Great Australian Bight Basins

Palynological investigation of dredged samples from the Bight and Duntroon Basins correlates palynofloras with the Maastrichtian to earliest Paleocene Forcipites longus and Manumiella druggii zones. The data, sourced from Geoscience Australia, indicates depositional environments ranged from paralic to marine and suggests provenance from streams flowing from the east and north. Recycled Permian to Cenomanian palynomorphs are common in the Potoroo and Wigunda Formations.

Use Cases

• Correlating geological formations based on described spore/pollen and microplankton zones.
• Modeling ancient sediment provenance and drainage patterns based on recycled palynomorph evidence.
• Reconstructing Campanian-Maastrichtian temperate rainforest ecosystems on the Australian Antarctic rift margin.
• Analyzing paralic to marine depositional environment transitions in rift basin settings.

Strengths

• Specific correlation to established biostratigraphic zones (Forcipites longus, Manumiella druggii).
• Identifies multiple geological formation sources (Potoroo, Wigunda, Ceduna).
• Provides environmental context from paralic to marine depositional settings.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified despite a last updated date of 2026-04-30.

Provenance

Source

Geoscience Australia Data

Collection Method

Palynological investigation of samples dredged during BMR Rig Seismic Cruise 66.

Time Range

Mesozoic, with specific focus on Santonian to Maastrichtian and Early Cretaceous ages.

Freshness

Last updated 2026-04-30 13:18:33.384415

Geography

Great Australian Bight area, southern Australia, specifically the offshore Bight and Duntroon Basins.