Quaternary Evolution and Modern Geological Processes of the Van Diemen Rise, Timor Sea

Release 1 of 1992 from the Australian Ocean Data Network describes the modern geological processes and Quaternary evolution of the Van Diemen Rise in the Timor Sea. The report analyzes sea bottom sediments, which are dominantly calcareous sand grade, and geomorphic features like channels and banks attributed to past sea-level changes. This environmental baseline data was collected to meet formal requirements for areas where further petroleum exploration could take place.

Use Cases

• Modeling past sea-level change impacts based on described wave-cut scarps and channels.
• Assessing sediment sources for carbonate sands based on the described skeletal material breakdown on banks and shoals.
• Evaluating potential environmental effects of petroleum exploration based on the interpreted baseline data for the East Malita Graben area.

Strengths

• Report provides a formal environmental baseline analysis for a specific offshore petroleum exploration area.
• Description includes specific geological features like sinuous curvilinear channels and flat top banks.

Limitations

• Data is presented in PDF/HTML report format; column-level documentation is absent and field semantics must be inferred.
• Row count and dataset scale are unknown, which may limit suitability assessment.
• Freshness should be verified as the underlying data is from a 1992 release, though metadata was updated in 2026.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collection, interpretation, and analysis of environmental baseline data.

Time Range

Quaternary to modern (1992 report).

Freshness

Last updated 2026-04-28 13:44:08.484355; underlying data from 1992.

Geography

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