Houtman Sub-basin Geophysical Modelling Study for Petroleum Prospectivity

The Houtman Sub-basin is an offshore depocentre on Australia's western margin. This study integrates geological and geophysical interpretations, including 2D seismic data from survey GA-349 in 2014/15 and gravity/magnetic data from surveys in 2008/09, to model crustal structure and assess petroleum prospectivity. The dataset is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Model crustal architecture and Moho depth based on integrated seismic and potential field data.
• Assess petroleum prospectivity based on interpretations of sediment thickness and magmatic rock distribution.
• Validate seismic interpretations of basement composition using gravity and magnetic susceptibility models.
• Investigate the extent of breakup-related sill and dyke complexes based on seismic identification.

Strengths

• Integrates multiple geophysical datasets, including about 26,000 km of gravity and magnetic data.
• Focuses on a specific, largely unexplored offshore basin with up to 19 km of sediment.
• Aims to produce unified gravity and magnetic datasets for constraining regional tectonics.

Limitations

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

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Integrated geological and geophysical interpretation of seismic surveys GA-349 and GA-310, and marine sampling survey GA-2476.

Time Range

Seismic data from 2014/15; gravity/magnetic data from 2008/09.

Freshness

Last updated 2026-04-28 15:38:00.183315; freshness should be verified.

Geography

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