Quaternary Evolution and Seafloor Features of the Van Diemen Rise, Timor Sea

Release 1 of 1992 describes the environmental baseline for potential petroleum exploration in Australia's offshore Timor Sea. The report analyzes modern geological processes and Quaternary evolution of the Van Diemen Rise, focusing on the East Malita Graben area. It was published by the Australian Ocean Data Network to meet formal requirements for environmental data collection.

Use Cases

• Modeling Quaternary sea-level changes based on described wave-cut scarps and channels.
• Assessing sediment transport based on descriptions of calcareous sand-grade seafloor sediments.
• Mapping potential reef habitats based on descriptions of flat-top banks and carbonate reef growth.
• Analyzing geomorphic features attributed to subaerial exposure during lower sea-level stages.

Strengths

• Focuses on a specific geographic region: the Van Diemen Rise in the eastern Timor Sea.
• Describes multiple geological features: sinuous channels, wave-cut scarps, and flat-top banks.
• Explicitly links seafloor sediments to the breakdown of skeletal material from banks and shoals.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified; last metadata update was 2026-06-04.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collection, interpretation, and analysis of environmental baseline data for offshore areas.

Time Range

Quaternary to modern (focus on 1992 release context)

Freshness

Last updated 2026-06-04 07:05:50.139083

Geography

Van Diemen Rise, East Malita Graban area, Timor Sea, vicinity of Cootamundra and Evans Shoals.