Houtman Sub-basin Geophysical Modelling Study with Seismic and Potential Field Data

An integrated geological and geophysical interpretation of the GA-349 seismic survey aims to improve understanding of the crustal architecture and magmatic rock distribution in the Houtman Sub-basin. The study uses new 2D seismic reflection data from 2014/15 and about 26,000 km of gravity and magnetic data from 2008/09 surveys. Geoscience Australia produced this modelling to underpin the possible future release of exploration acreage in this frontier basin.

Use Cases

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

Strengths

• Integrates about 26,000 km of gravity and magnetic data with seismic survey data.
• Focuses on a frontier basin with up to 19 km of sediment, which is a key detail for resource assessment.
• Aims to model specific features like Moho depth, basement composition, 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 in PDF format, which may not be readily machine-readable for 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 2026-04-30 14:49:44.963375; freshness should be verified.

Geography

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