Houtman Sub-basin Geophysical Modelling Study for Petroleum Prospectivity

The Houtman Sub-basin is an offshore depocentre on the western margin of Australia. This dataset contains an integrated geological and geophysical interpretation of the GA-349 seismic survey, aiming to improve understanding of crustal architecture and magmatic rock distribution. The study integrates about 26,000 km of gravity and magnetic data from surveys in 2008/09 and 2014/15.

Use Cases

• Model crustal structure and Moho depth based on integrated seismic and potential field data.
• Assess sediment thickness and density variations for hydrocarbon maturation modeling.
• Map the distribution and thickness of intrabasinal magmatic rocks identified on seismic data.
• Validate seismic interpretations of basement composition using gravity and magnetic susceptibility models.
• Re-evaluate petroleum prospectivity to underpin future exploration acreage release decisions.

Strengths

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

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 require extraction for computational analysis.

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Integrated interpretation of seismic, gravity, and magnetic surveys.

Time Range

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

Freshness

Last updated 2026-04-10 16:42:51.073552; freshness should be verified.

Geography

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