Tasmanian Shelf and Bass Strait Sediment Composition

Three hundred and sixty-five surface and near-surface seabed samples form the basis for assessing regional lithofacies variations. The dataset was contributed by the Australian Ocean Data Network and was last updated in April 2026. It provides a detailed analysis of sediment types, heavy mineral suites, and geochemical properties across the continental shelf.

Use Cases

• Classify sediment lithofacies (e.g., quartz-rich sands, muddy sediments, bryozoan gravels) based on sample location and composition.
• Analyze heavy mineral suites to trace sediment provenance and offshore transport patterns.
• Identify areas of potential economic interest by mapping geochemical anomalies, such as cassiterite grains and phosphate content.
• Model modern versus relict sediment distribution to understand Holocene marine transgression impacts.

Strengths

• Dataset is based on 365 distinct seabed samples.
• Analysis includes specific geochemical measurements, such as a maximum recorded value of 10 ppm Sn.

Limitations

• Sample station density is explicitly noted as low in parts of the shelf, limiting spatial resolution.
• Primary data formats are PDF and HTML, which may require extraction for computational analysis.
• Specific sample collection dates and temporal range for the underlying study are not provided.

Provenance

Source

Australian Ocean Data Network

Collection Method

Analysis of 365 surface and near-surface seabed samples.

Time Range

null

Freshness

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Geography

Tasmanian continental shelf and parts of eastern and western Bass Strait.