Eocene Calcareous Nannofossil Biostratigraphy of the Otway Basin, Australia

Otway Basin in southeastern Australia provides data from a study of middle to late Eocene calcareous nannofossil assemblages across four sections. The dataset compares biostratigraphic events with foraminiferal zones and New Zealand counterparts, and assesses sedimentation patterns. Geoscience Australia Data published this information, last updated on 2026-03-25.

Use Cases

• Correlating nannofossil and foraminiferal biostratigraphic zones based on event sequences described.
• Analyzing diachronous marine sedimentation patterns in the Otway Basin during the Eocene.
• Modeling paleoenvironmental conditions like temperate surface-water temperatures and shallow marine settings.
• Calibrating local biostratigraphic events against tropical planktic foraminiferal P. zones.

Strengths

• Focuses on a specific, well-defined geological interval: middle to late Eocene.
• Compares biostratigraphy across multiple sections and with a counterpart in New Zealand.
• Provides revised placements for foraminiferal events, such as Acarinina primitiva in zone P.13.

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 bias inherent to the Otway Basin study area.

Provenance

Source

Geoscience Australia Data

Collection Method

Study of calcareous nannofossil assemblages from four sections in the Otway Basin.

Time Range

Middle to late Eocene

Freshness

Last updated 2026-03-25 16:46:00.376281; freshness should be verified.

Geography

Otway Basin, southeastern Australia; includes Gambier Embayment and Browns Creek area.