Eocene Calcareous Nannofossil Biostratigraphy Events in Otway Basin, Australia

A biostratigraphic study of middle to late Eocene calcareous nannofossil assemblages from four sections in the Otway Basin, southeastern Australia. The sequence spans from the lowest appearance of Cyclicargolithus reticulatus to the disappearance of Discoaster saipanensis and is compared with tropical planktic foraminiferal zones. The dataset likely contains event records and stratigraphic comparisons, sourced from the Australian Ocean Data Network.

Use Cases

• Correlating biostratigraphic events based on nannofossil and foraminiferal appearances/disappearances mentioned in the description
• Analyzing diachroneity of marine sedimentation events across the Gambier Embayment and Browns Creek areas
• Studying paleoenvironmental conditions like temperate surface-water temperatures and shallow marine depositional environments
• Comparing sedimentation rates between condensed sections and expanded sections like Browns Creek

Strengths

• Focuses on a specific stratigraphic interval from middle to latest Eocene
• Compares biostratigraphy across four sections and with a counterpart in New Zealand
• Re-evaluates the placement of foraminiferid Acarinina primitiva within tropical 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 is available only in PDF and HTML formats, which may hinder direct analysis

Provenance

Source

Australian Ocean Data Network

Collection Method

Study of calcareous nannofossil assemblages from four sections

Time Range

Middle to late Eocene

Freshness

Last updated 2026-05-05 02:04:48.176309; freshness should be verified

Geography

Otway Basin, southeastern Australia, including Gambier Embayment and Browns Creek area