Browse Basin Hydrocarbon Sources Analyzed via GCxGC-TOFMS and Diamondoid CSIA

Geoscience Australia Data research combines two-dimensional gas chromatography and compound-specific isotope analysis to identify multiple hydrocarbon sources in the Browse Basin. The study analyzes non-biodegraded and biodegraded oil fields, using diamondoid concentrations and isotopic compositions as source-specific markers resistant to biodegradation. Data was last updated on 2026-04-20.

Use Cases

• Identify mixed hydrocarbon sources in petroleum accumulations based on diamondoid concentrations and ratios.
• Distinguish between biodegraded and non-biodegraded oil signatures using compound-specific isotope analysis of diamondoids.
• Model hydrocarbon maturity and charge history in the Browse Basin based on biomarker and diamondoid data.
• Correlate gas escape events with residual fluid composition based on high diamondoid concentrations in oil fields.

Strengths

• Analysis includes both non-biodegraded (Caswell) and biodegraded (Cornea, Gwydion) oil fields for comparison.
• Uses GCxGC-TOFMS methodology which minimizes interference from co-eluting compounds.
• Focuses on diamondoid compounds which are described as source-specific and resistant to thermal maturity and biodegradation.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Laboratory analysis via comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GCxGC-TOFMS) and compound-specific isotope analyses (CSIA).

Freshness

Last updated 2026-04-20 03:39:22.092892; freshness should be verified.

Geography

Browse Basin, offshore Northwest region of Australia.