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 ranging from the Ordovician to Early Cretaceous. The research focuses on source rocks deposited in marine environments with varying contributions of terrestrial organic matter. It investigates molecular compounds like semi-volatile aromatics and diamondoids to identify terrestrial inputs that classical biomarker analysis may miss.

Use Cases

• Identifying terrestrial organic matter contributions in marine source rocks based on molecular compound analysis.
• Modeling petroleum generation potential based on source rock composition and maturity levels.
• Constraining biogeochemical models of the carbon cycle using terrestrial carbon input data.
• Correlating hydrocarbon accumulations with specific source rock formations based on geochemical signatures.

Strengths

• Analysis covers four distinct petroleum systems spanning from the Ordovician to Early Cretaceous.
• Study examines specific molecular compounds like perylene and methyltrimethyltridecylchromans as terrestrial markers.
• Includes petrological, palynological, and molecular evidence from named formations like the upper Goldwyer Formation.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Comparative geochemical study of rock samples and hydrocarbon accumulations.

Time Range

Ordovician to Early Cretaceous

Freshness

Last updated 2026-04-20 02:34:18.186685; freshness should be verified.

Geography

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