Jurassic and Cretaceous Sandstone Diagenesis and Porosity in the Eromanga Basin

35% core porosity and 125 md permeability characterize the volcanolithic sandstones, while quartzose sandstones average 29% porosity and 676 md permeability. This dataset from Geoscience Australia details the diagenetic overprints and pore-type distribution in Jurassic and Lower Cretaceous sandstones of New South Wales. The analysis links porosity-permeability patterns to depositional environments and describes authigenic mineral sequences for two distinct petrofacies.

Use Cases

• Modeling aquifer potential based on described porosity and permeability values.
• Classifying sandstone petrofacies based on described authigenic mineral sequences.
• Correlating depositional environments with porosity-permeability patterns as mentioned in the description.
• Analyzing the impact of early diagenetic clay cutans on preventing quartz cementation.

Strengths

• Provides specific mean porosity (29%) and permeability (676 md) values for quartzose sandstones.
• Includes detailed diagenetic sequences for two distinct petrofacies.
• Links physical properties to depositional environments and geological processes.

Limitations

• 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

Likely contains core sample analysis and geological field studies.

Time Range

Jurassic and Lower Cretaceous periods.

Freshness

Last updated 2026-04-20 01:01:20.151488; freshness should be verified.

Geography

Eromanga Basin in New South Wales, Australia.