Quaternary and Modern Environments of the Van Diemen Rise, Timor Sea

Environmental baseline data for the Van Diemen Rise on the Sahul Shelf in the eastern Timor Sea, required for petroleum exploration. The description details sea bottom sediments, sinuous channel-like features, and the effects of sea-level changes since the last glacial maximum about 18,000 years ago. The dataset is provided by the Australian Ocean Data Network and was last updated in 2026.

Use Cases

• Modeling Quaternary sea-level change impacts based on described terrace and bank formations.
• Assessing modern sediment distribution patterns based on described calcareous sands, foraminiferal calcarenites, and silty clays.
• Evaluating potential environmental disturbance from seismic surveying and drilling activities mentioned in the description.

Strengths

• Description provides specific geological and temporal context, such as sea level being ~120 m lower about 18,000 years ago.
• Focuses on a defined geographic area: the Van Diemen Rise on the Sahul Shelf in the eastern Timor Sea.
• Data is associated with the Australian Ocean Data Network, a known data aggregator.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data files are in HTML and PDF formats, which may require extraction for analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely collected through marine geological surveys and analysis, as inferred from the description.

Time Range

Covers Quaternary period to present, with specific reference to conditions about 18,000 years ago.

Freshness

Last updated 2026-06-27 15:47:36.479159; freshness should be verified.

Geography

Van Diemen Rise, Sahul Shelf, eastern Timor Sea.