Sorell Basin Petroleum Prospectivity Bulletin for Tasmania

An area of 100,000 sq km west of Tasmania is covered by this geological bulletin, focusing on the Late Mesozoic and Tertiary sediments within the Sorell Basin. The Australian Ocean Data Network compiled this assessment, which concentrates on the King Island and Strahan Sub-basins where well and seismic data exist. The dataset was last updated in April 2026.

Use Cases

• Assess regional petroleum prospectivity using interpreted well and seismic data from the King Island Sub-basin.
• Model Late Jurassic-Early Cretaceous extensional basin formation within the Southern Rift System based on geological sections.
• Analyze the thickness and distribution of Late Mesozoic and Tertiary sedimentary wedges across the 100,000 sq km western margin.
• Evaluate marine environmental features and their impact on offshore exploration as discussed in the environmental features section.

Strengths

• Covers a defined offshore region of 100,000 sq km.
• Focuses on sub-basins (King Island, Strahan) with sufficient well and seismic data for analysis.
• Includes structured sections on regional geology, prospectivity, and environmental features.

Limitations

• Specific row counts, column names, and sample data are unavailable for quantitative analysis.
• The primary data format is HTML/ZIP documentation, limiting direct machine-readability of underlying geospatial data.
• Prospectivity assessment is concentrated only on the northern part of the Sorell Basin.

Provenance

Source

Australian Ocean Data Network

Collection Method

Compilation and interpretation of well data, seismic data, and regional geological studies.

Time Range

Covers geological periods from Late Jurassic-Early Cretaceous to Tertiary.

Freshness

Last updated in April 2026.

Geography

Offshore region west of Tasmania, specifically the Sorell Basin (100,000 sq km), focusing on the King Island and Strahan Sub-basins.