Houtman Sub-basin Geophysical Modelling Study with GA-349 Survey

The Houtman Sub-basin geophysical modelling study integrates geological and geophysical interpretation of the GA-349 seismic survey. It aims to improve understanding of crustal architecture and magmatic rock distribution in the largely unexplored offshore basin on Australia's western margin. The study uses potential field modelling to validate seismic interpretation and model density and magnetic susceptibility variations.

Use Cases

• Validate seismic interpretations of crustal structure and Moho depth based on integrated gravity and magnetic data.
• Model density variations within the sedimentary section to assess petroleum prospectivity.
• Investigate the depth, extent, and thickness of intrabasinal magmatic rocks identified on seismic data.
• Constrain regional tectonics and basin structure using unified gravity and magnetic datasets.
• Re-assess petroleum prospectivity of the frontier basin to underpin future exploration acreage release.

Strengths

• Integrates about 26,000 km of new gravity and magnetic data from surveys GA-310 and GA-2476.
• Focuses on a basin that may contain up to 19 km of sediment and formed during two separate rifting episodes.
• Uses new 2D seismic reflection data obtained in 2014/15 (GA-349) for re-assessment.

Limitations

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

Provenance

Source

Australian Ocean Data Network

Collection Method

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

Time Range

Seismic survey data from 2014/15; gravity and magnetic data from 2008 and 2009.

Freshness

Last updated 2026-05-05 04:59:30.803402; freshness should be verified.

Geography

Houtman Sub-basin, northern Perth Basin, western margin of Australia.