Petroleum Origin in Australian Basins: Source, Maturation, and Migration Analysis

130 core samples and natural gas analyses enable resolution of the petroleum generation and migration history in the Bowen and Surat basins. Biomarker and stable carbon-isotope analysis confirmed a Permian-sourced petroleum with a minor Triassic contribution, primarily from terrestrial land plants. The data, from Geoscience Australia, details liquid expulsion and gas generation phases based on vitrinite reflectance measurements.

Use Cases

• Modeling petroleum generation windows based on vitrinite reflectance values (0.65-1.05%) mentioned in the description
• Correlating petroleum sources to geological periods using biomarker and stable carbon-isotope analysis results
• Assessing the hydrocarbon potential of different depositional facies (e.g., lower vs. upper delta plain coals)
• Differentiating between terrestrial and marine source influences on petroleum composition

Strengths

• Analysis is based on 130 core samples from potential source rocks.
• Source rock maturation is quantified using specific vitrinite reflectance ranges (0.65-0.7% to 1.05%).
• Multiple analytical methods (biomarker and stable carbon-isotope analysis) are used to confirm sources.

Limitations

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

Provenance

Source

Geoscience Australia Data

Collection Method

Analysis of natural gases and 130 core samples from potential source rocks.

Freshness

Last updated 2026-03-25 17:57:57.756742; freshness should be verified.

Geography

Bowen and Surat basins, Australia