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

A 2014/15 geophysical modelling study integrates the GA-349 seismic survey with gravity and magnetic data to interpret the crustal architecture of the Houtman Sub-basin. The study, conducted by Geoscience Australia, aims to improve understanding of sediment thickness, basement nature, and magmatic rock distribution to assess petroleum prospectivity. It incorporates about 26,000 km of gravity and magnetic data from 2008/09 surveys.

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 composition.
• Map the distribution and thickness of magmatic rocks based on seismic and magnetic susceptibility variations.
• Validate seismic interpretations of basin structure using gravity and magnetic modelling.

Strengths

• Integrates multiple geophysical data types, including a 2014/15 seismic survey and about 26,000 km of gravity/magnetic data.
• Focuses on a specific, largely unexplored offshore depocentre with up to 19 km of sediment.
• Aims to provide a clear picture of factors influencing hydrocarbon maturation, as described.

Limitations

• Data is provided in PDF format, limiting direct machine-readability and analysis.
• Column-level documentation and sample data are unavailable, requiring manual inspection after download.
• Row count and specific data structure are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

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 2026-04-20 02:57:06.502760; freshness should be verified.

Geography

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