Geochemical Analysis of Four Australian Petroleum Systems from Ordovician to Cretaceous

A study from Geoscience Australia compares the geochemical characteristics of four Australian petroleum systems. The analysis covers source rocks from the Ordovician to Early Cretaceous periods, deposited in marine environments with varying terrestrial organic matter inputs. The research investigates molecular compounds to understand terrestrial carbon contributions and their implications for hydrocarbon generation.

Use Cases

• Modeling terrestrial organic carbon inputs to marine systems based on geochemical biomarker analysis.
• Predicting hydrocarbon fluid types (gas/oil) based on source rock composition described in the study.
• Constraining biogeochemical models of past atmospheric CO2 levels using terrestrial carbon fate data.
• Identifying terrestrial inputs in mixed-maturity petroleum accumulations using semi-volatile aromatics and diamondoids.

Strengths

• Analysis covers four distinct petroleum systems spanning a long geological timeframe from Ordovician to Cretaceous.
• Study incorporates multiple evidence types: petrological, palynological, and molecular geochemical data.
• Focuses on a specific, topical problem in marine biogeochemistry with direct petroleum industry applications.

Limitations

• Data is presented in a PDF format, which may require extraction and structuring for computational analysis.
• Column-level documentation and sample data are unavailable, limiting immediate assessment of data structure.
• Row count and dataset size are unknown, which may affect suitability for large-scale modeling tasks.

Provenance

Source

Geoscience Australia Data

Collection Method

Comparative geochemical analysis of source rock samples.

Time Range

Ordovician to Early Cretaceous periods

Freshness

Last updated 2026-05-14 09:20:18.833565; freshness should be verified.

Geography

Australia (Canning Basin, Western Australia; Australian North West Shelf)