Houtman Sub-basin Geophysical Modelling Study

Geoscience Australia's integrated geological and geophysical interpretation of the GA-349 seismic survey, aimed at improving understanding of the Houtman Sub-basin's crustal architecture and magmatic rock distribution. The study incorporates about 26,000 km of gravity and magnetic data from 2008-2009 surveys and new 2D seismic reflection data from 2014/15. It uses potential field modelling to validate seismic interpretations and model density and magnetic susceptibility variations within the sedimentary section and basement.

Use Cases

• Model crustal structure and Moho depth based on integrated gravity and magnetic data.
• Assess petroleum prospectivity based on interpreted sediment thickness and basement nature.
• Map the distribution and thickness of magmatic rocks based on seismic and potential field data.
• Validate seismic interpretations of basin architecture using potential field modelling.

Strengths

• Integrates about 26,000 km of gravity and magnetic data from dedicated surveys.
• Incorporates new 2D seismic reflection data (GA-349) from 2014/15.
• Study aims to model specific, high-value targets like Moho depth and intrabasinal magmatic rocks.

Limitations

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

Provenance

Source

Geoscience Australia Data

Collection Method

Integrated interpretation of seismic, gravity, and magnetic surveys.

Time Range

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

Freshness

Last updated 2026-03-25 19:04:39.840900; freshness should be verified.

Geography

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