Roebuck and Offshore Canning Basin Biozonation Chart

Chart No.14 details biostratigraphic zonation for the Roebuck and Offshore Canning Basin. It uses fossil index species like foraminifera and dinoflagellate cysts to establish relative rock ages and correlate sedimentary successions. The Australian Ocean Data Network published this chart, with metadata last updated in April 2026.

Use Cases

• Correlate sedimentary rock layers between basins using first and last appearance data of index fossil species.
• Calibrate biozones to the absolute geological timescale using radio-isotopic tie points referenced in the chart.
• Analyze the abundance and geographic spread of specific fossil groups such as brachiopods or conodonts for paleoenvironmental reconstruction.
• Establish relative age models for the Roebuck and Canning Basin by applying the defined zonal schemes.

Strengths

• Provides a defined zonal scheme based on multiple fossil groups for cross-validation.
• Metadata indicates active maintenance with a recent update in 2026.

Limitations

• Core data dimensions like row count, sample size, and temporal coverage of the fossil records are unknown.
• Primary data is presented in chart format (PDF/HTML), which may require manual extraction for computational analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Compilation and analysis of fossil data to establish biozones.

Time Range

Geologic time, specific range null.

Freshness

Metadata last updated 2026-04-04.

Geography

Roebuck Basin and Offshore Canning Basin, Australia.