Geological Maps and Evolution of the Taroom Trough and Surat Basin

50,000 square kilometers of the southern Taroom Trough and 300,000 square kilometers of the overlying Surat Basin are documented through isopach and structure contour maps. The Australian Ocean Data Network published this geological analysis, which was last updated in April 2026. It details sedimentary fill thicknesses from less than 400 meters to 10,000 meters, spanning from the Permian to Cretaceous periods.

Use Cases

• Analyze petroleum prospectivity by correlating Lower Jurassic Hutton Sandstone thickness with the Mimosa Syncline structure.
• Model basin subsidence history using isopach maps showing sedimentary fill increasing northward from 400 m to 10,000 m.
• Reconstruct tectonic evolution by examining fault-bounded margins and the timing of movements from Late Permian to Late Triassic.
• Assess hydrocarbon migration and trapping mechanisms discussed for Permian and Jurassic source rocks.

Strengths

• Covers a 300,000 km2 area of the Surat Basin with detailed stratigraphic breakdown.
• Provides specific thickness ranges for sedimentary fill, from less than 400 m to 10,000 m.
• Includes analysis of tectonic events with defined geological timeframes (e.g., Late Permian, Early Triassic).

Limitations

• No raw columnar data or sample data is provided, only interpretive maps and descriptions.
• The dataset's primary format is HTML, which may not be readily usable for quantitative spatial analysis without digitization.
• Focus is limited to the southern Taroom Trough and lower Surat Basin, not the entire basin system.

Provenance

Source

Australian Ocean Data Network.

Collection Method

Interpretive geological mapping and analysis of subsurface data.

Time Range

Covers geological periods from Lower Permian to Lower Cretaceous.

Freshness

Updated April 2026.

Geography

Southern Taroom Trough (50,000 km2) and Surat Basin (300,000 km2) in Queensland, Australia.