Palynological investigation of dredged samples from the Bight and Duntroon Basins correlates bulk palynofloras with the Maastrichtian to earliest Paleocene Forcipites longus Zone and Manumiella druggii Zone. The zones are characteristic of the upper Potoroo Formation, indicating its widespread presence. Environments ranged from paralic to marine, with some samples indicating Santonian to Maastrichtian and Early Cretaceous sources.
Use Cases
- Correlating sediment layers based on palynological zones mentioned in the description
- Analyzing paleoenvironmental changes from paralic to marine based on depositional environment descriptions
- Studying provenance and sediment transport pathways based on recycled palynomorph evidence
- Mapping the distribution of the Potoroo Formation across basins based on widespread zone correlations
Strengths
- Analysis correlates samples with specific geological zones (Forcipites longus, Manumiella druggii)
- Description identifies multiple formation sources (Potoroo, Wigunda, Ceduna)
- Palynological evidence provides insight into Campanian-Maastrichtian temperate rainforests
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 dredged samples from specific cruises
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Samples dredged from 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 2026-04-16 15:14:06.640385; freshness should be verified
- Geography
- Great Australian Bight area, southern Australia, covering the Bight and Duntroon Basins