Houtman Sub-basin Geophysical Modelling Study: GA-349 Seismic Survey

The GA-349 seismic survey acquired new 2D seismic reflection data in 2014/15. Geoscience Australia integrated about 26,000 km of gravity and magnetic data from 2008/09 surveys to produce unified datasets. This study uses potential field modelling to validate crustal structure and model density variations within the Houtman Sub-basin.

Use Cases

• Validate seismic interpretations of crustal structure based on potential field modelling.
• Model density variations within the sedimentary section to understand basin fill.
• Investigate the depth and extent of intrabasinal magmatic rocks identified on seismic data.
• Assess petroleum prospectivity by modelling factors influencing hydrocarbon maturation.

Strengths

• Integrates about 26,000 km of gravity and magnetic data from dedicated surveys.
• Focuses on a frontier basin with up to 19 km of sediment, providing a detailed regional study.
• Uses new 2D seismic reflection data (GA-349) acquired in 2014/15.

Limitations

• Data is presented in PDF format, which may limit direct machine-readability and analysis.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network via data_gov_au

Collection Method

Integrated geological and geophysical interpretation of seismic, gravity, and magnetic surveys.

Time Range

Surveys conducted in 2008, 2009, and 2014/15.

Freshness

Last updated 2026-06-27 21:41:19.918719; freshness should be verified.

Geography

Houtman Sub-basin, northern Perth Basin, offshore western Australia.