Mesozoic Sediment Stratigraphy and Palynology from the Great Australian Bight

Palynological analysis of dredged samples reveals Campanian-Maastrichtian temperate rainforests were widespread on the Australian side of the rift. The data, from the Australian Ocean Data Network, correlates samples with specific spore/pollen and microplankton zones like the Forcipites longus Zone. It indicates deposition environments ranged from paralic to marine and identifies recycled Permian to Cenomanian palynomorphs within the formations.

Use Cases

• Correlating sediment layers based on described spore/pollen and microplankton zones like Forcipites longus and Manumiella druggii.
• Reconstructing ancient depositional environments from the described range of paralic to marine settings.
• Analyzing sediment provenance and paleo-drainage patterns based on the described recycled palynomorphs from Permian to Cenomanian ages.
• Studying the distribution of Cretaceous formations like the Potoroo, Wigunda, and Ceduna Formations across the Bight and Duntroon Basins.

Strengths

• Analysis correlates samples with specific biostratigraphic zones (e.g., Maastrichtian to earliest Paleocene Forcipites longus Zone).
• Identifies recycled palynomorphs from multiple geologic periods (Permian, Neocomian-Aptian, Albian-Cenomanian).
• Provides temporal context for formations, indicating ages from Santonian to Maastrichtian and Early Cretaceous.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic/temporal bias inherent to data_gov_au sampling.

Provenance

Source

Australian Ocean Data Network

Collection Method

Palynological investigation of samples dredged from the continental slope and submarine canyon walls during BMR Rig Seismic Cruise 66.

Time Range

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

Freshness

Last updated 2026-06-27 17:57:20.401442; freshness should be verified.

Geography

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