2700 km of industry-standard seismic data was acquired in late 2004 as part of Geoscience Australia's Southwest Frontiers Survey. The survey aimed to define basement composition and crustal thickness to constrain tectonic evolution and hydrocarbon maturation models. Results indicate sediment thickness exceeding 9 km and basement velocities of 5.2-5.6 km/s, suggesting a non-granitic composition.
Use Cases
- Model hydrocarbon maturation scenarios based on basement composition and heat production.
- Interpret tectonic evolution of the region based on crustal thickness estimates.
- Improve depth conversion of reflection seismic data using accurate velocity information from refraction work.
- Compare Gondwana basement structure with conjugate Antarctic counterpart data.
Strengths
- 2700 km of 106-fold seismic data recorded to 12 seconds two-way time.
- Survey supplemented by refraction data from sonobuoys and land stations.
- Velocity data indicates sediment thickness exceeding 9 km and basement velocities in the 5.2-5.6 km/s range.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Last updated 2026-05-05 04:34:48.372043; freshness should be verified.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Geophysical survey acquiring marine reflection and refraction seismic data.
- Time Range
- Survey conducted in late 2004.
- Freshness
- Last updated 2026-05-05 04:34:48.372043
- Geography
- South-western Australian continental margin (Bremer Sub-basin) and its Antarctic counterpart.