Eocene Calcareous Nannofossil Biostratigraphy of the Otway Basin, Australia

Australian Ocean Data Network provides data from a study of middle to late Eocene calcareous nannofossil assemblages in four sections of the Otway Basin. The dataset compares biostratigraphic events with foraminiferal zones and New Zealand counterparts, assessing sedimentation events and marine ingressions. It was last updated on 2026-04-16.

Use Cases

• Refining foraminiferal biostratigraphic zones based on nannofossil event correlations described in the study.
• Analyzing diachroneity of Eocene marine sedimentation in the Otway Basin based on described transgressive rock units and isolated assemblages.
• Modeling paleoenvironmental conditions such as temperate surface-water temperatures and shallow marine depositional environments mentioned for the Australian southern margin.
• Correlating sedimentation rates between basin locations using evidence of condensed versus expanded sections described at Gambier Embayment and Browns Creek.

Strengths

• Focuses on a specific geological interval spanning from the middle Eocene to the latest Eocene.
• Compares biostratigraphic sequences with counterparts in New Zealand and tropical planktic foraminiferal P. zones.
• Assesses sedimentation events across four distinct sections within the Otway Basin.

Limitations

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

Provenance

Source

Australian Ocean Data Network

Collection Method

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

Time Range

Middle Eocene to latest Eocene

Freshness

Last updated 2026-04-16 09:04:07.725162; freshness should be verified.

Geography

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