Quaternary and Modern Environments of the Van Diemen Rise

Van Diemen Rise on the Sahul Shelf in the eastern Timor Sea is the focus of this environmental baseline dataset. It details Quaternary evolution, modern geological processes, and sediment types, including calcareous sands, foraminiferal calcarenites, and silty clays. The data supports analysis for petroleum exploration planning in Australia's offshore areas.

Use Cases

• Baseline environmental assessment for petroleum exploration based on described sediment types and geological features.
• Analysis of Quaternary sea-level change impacts using described features like submerged terraces and channels.
• Study of modern carbonate shelf sedimentation processes based on described foraminiferal and Halimeda assemblages.
• Assessment of potential impacts from seismic surveying and drilling activities on the described shelf environment.

Strengths

• Provides detailed geological and sedimentological context for a specific offshore region (Van Diemen Rise).
• Cross-platform presence on data.gov.au suggests recognized importance for environmental baseline studies.

Limitations

• Critical metadata such as column names, row count, file size, and license are consistently missing or listed as 'unknown'/'None'.
• The dataset's structure and specific data points are unclear, as only descriptive text and publication formats (PDF, HTML) are provided.

Provenance

Source

Geoscience Australia Data

Collection Method

Likely derived from seismic surveying, drilling, and field studies, though specific methodology is not detailed.

Time Range

Covers the Last Glacial Maximum (~18,000 BP) to the present Holocene.

Freshness

Last updated 2026-05-14 according to the most recent platform entry.

Geography

Van Diemen Rise on the Sahul Shelf in the eastern Timor Sea, Australian continental shelf.