Calcareous nannofossil biostratigraphy: an assessment of foraminiferal and sedimentation e

Middle to late Eocene calcareous nannofossil assemblages from four sections in the Otway Basin, southeastern Australia, were studied to deduce a sequence of biostratigraphic events. The dataset, published by the Australian Ocean Data Network, compares the sequence with its counterpart in New Zealand and correlates it with tropical planktic foraminiferal zones. It assesses diachroneity in marine sedimentation and links ingressions to changes in sea-floor spreading rates south of Australia.

Use Cases

• Refining foraminiferal biostratigraphic zonations based on correlations with nannofossil events described in the study.
• Analyzing regional sedimentation patterns and transgression timing during the middle to late Eocene in the Otway Basin.
• Investigating paleoenvironmental conditions, such as temperate surface-water temperatures and shallow marine settings, along the Australian southern margin.
• Correlating local biostratigraphic events with global tropical planktic foraminiferal zones mentioned in the description.

Strengths

• Focuses on a specific geological interval from the middle to latest Eocene.
• Compares biostratigraphic sequences across two regions: southeastern Australia and New Zealand.
• Integrates evidence from two microfossil groups: calcareous nannofossils and planktic foraminifera.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

Study of calcareous nannofossil assemblages from four geological sections.

Time Range

Middle Eocene to latest Eocene

Freshness

Last updated 2026-04-10 20:11:47.699012; freshness should be verified.

Geography

Otway Basin, southeastern Australia; comparison with New Zealand.