Quaternary Seafloor Evolution and Sediments of Van Diemen Rise

Release 1 of 1992 describes the Quaternary evolution and modern geological processes of the Van Diemen Rise in the Timor Sea. The Australian Ocean Data Network produced this analysis to meet environmental baseline requirements for potential petroleum exploration areas. It interprets seafloor features and sediment origins from a period of subaerial exposure during lower sea levels.

Use Cases

• Analyze the distribution and origin of calcareous sand-grade sediments derived from skeletal material on banks and shoals.
• Interpret the formation of sinuous, narrow curvilinear channel-like features attributed to Quaternary subaerial exposure.
• Study the relationship between Holocene sea-level rise, inundation of wave-cut scarps and channels, and subsequent carbonate reef growth.
• Assess the geomorphic elements and environmental features of the East Malita Graben area for baseline environmental characterization.

Strengths

• Analysis covers a defined potential release area in the Van Diemen Rise, vicinity of Cootamundra and Evans Shoals.
• Report provides integrated interpretation of Quaternary evolution, modern processes, and environmental features.

Limitations

• Data is contained in a 1992 report, representing a historical snapshot with no recent updates.
• No quantitative row/column data or sample datasets are provided; information is descriptive and interpretive.
• Geographic scope is limited to a specific area of the Timor Sea, reducing broader applicability.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collection, interpretation, and analysis of environmental baseline data for formal requirements.

Time Range

Quaternary period to modern (circa 1992 analysis).

Freshness

null

Geography

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