Petroleum Origin Analysis for Bowen and Surat Basins with Biomarker and Isotope Data

A geological study analyzes the origin, maturation, and migration of petroleum in Australia's Bowen and Surat basins. The analysis is based on natural gases and 130 core samples from potential source rocks, using biomarker and stable carbon-isotope techniques. The dataset is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Identify the geological age of petroleum source rocks based on biomarker analysis confirming a pre-Jurassic source.
• Differentiate source contributions based on stable carbon-isotope analysis indicating a dominant Permian source with minor Triassic input.
• Assess the liquid generation potential of different coal facies based on analysis of lower versus upper delta plain Permian coals.
• Model hydrocarbon expulsion and generation phases based on vitrinite reflectance (Ro) thresholds mentioned in the description.

Strengths

• Analysis is based on a concrete sample size of 130 core samples and natural gases.
• Provides specific geochemical thresholds, such as initial liquid expulsion at vitrinite reflectance 0.65-0.7%.
• Uses multiple analytical methods, including biomarker and stable carbon-isotope analysis, for source rock characterization.

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 formats are PDF and HTML, which may require extraction for structured analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely contains results from laboratory analysis of core samples and gases.

Time Range

Study focuses on geological timescales (Permian, Triassic, Jurassic).

Freshness

Last updated 2026-04-10 19:15:43.338392; freshness should be verified.

Geography

Bowen and Surat basins in Australia.