Petroleum Origin in Bowen and Surat Basins with Biomarker and Isotope Analysis

The Bowen and Surat basins in Australia are the focus of this geochemical study. It analyzes natural gases and 130 core samples from potential source rocks to resolve petroleum generation and migration history. Biomarker and stable carbon-isotope analyses confirm a Permian-sourced petroleum with minor Triassic and marine influences.

Use Cases

• Modeling petroleum generation history based on vitrinite reflectance maturation windows (0.65-0.7% to 1.05%)
• Correlating petroleum to source rock facies based on analysis of terrestrial land plants versus marine sources
• Assessing liquid hydrocarbon potential based on comparisons of lower delta plain versus upper delta plain Permian coals
• Differentiating source contributions based on biomarker and stable carbon-isotope analysis results

Strengths

• Analysis includes 130 core samples, providing a substantial physical sample set
• Biomarker and stable carbon-isotope analyses provide multiple lines of geochemical evidence
• Specific maturation thresholds for liquid expulsion (Ro 0.65-0.7%) and gas generation (Ro >1.05%) are quantified

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data is presented in PDF/HTML formats, which may require extraction for computational analysis

Provenance

Source

Australian Ocean Data Network

Collection Method

Geochemical analysis of natural gases and core samples

Freshness

Last updated 2026-06-04 08:23:51.860222; freshness should be verified

Geography

Bowen and Surat basins, Australia