Hydrocarbon Geochemistry Data from the Browse Basin via GCxGC-TOFMS and CSIA

A study combining comprehensive two-dimensional gas chromatography (GCxGC-TOFMS) and compound-specific isotope analyses (CSIA) of diamondoids, n-alkanes, and aromatic hydrocarbons to identify hydrocarbon sources in Australia's Browse Basin. The data likely contains absolute concentrations, ratios, and isotopic compositions of these compounds from non-biodegraded and biodegraded oil fields. The dataset is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Identify mixed hydrocarbon contributions in oil accumulations based on diamondoid concentrations and isotopic signatures.
• Assess source rock maturity and fluid mixing based on biomarker parameters and diamondoid yields.
• Study the effects of biodegradation on hydrocarbon composition using diamondoid concentration data.
• Correlate hydrocarbon fluids to specific geological sequences (e.g., Jurassic fluviodeltaic, Cretaceous marine) using compound-specific data.

Strengths

• Data is derived from advanced analytical techniques (GCxGC-TOFMS and CSIA) that minimize interference from co-eluting compounds.
• Analysis focuses on diamondoids, which are described as source-specific and highly resistant to thermal maturity and biodegradation.
• Dataset covers both non-biodegraded (Caswell) and biodegraded (Cornea, Gwydion) oil fields for comparison.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The primary data format is PDF, which may require extraction to a structured format for analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Laboratory analysis of oil samples using GCxGC-TOFMS and CSIA.

Freshness

Last updated 2026-04-16 09:10:10.213567; freshness should be verified.

Geography

Browse Basin, offshore Northwest Australia