Permian Yessabah Limestone Sequence Analysis And Depositional Models

Geoscience Australia Data provides a geological study of the Permian Yessabah Limestone in the Manning-Macleay Basin. The analysis details depositional sequences, sea-level changes, and the alternating dominance of crinoid and bryozoan faunal assemblages. The data is presented in HTML and PDF formats.

Use Cases

• Model the transgressive systems tract and highstand systems tract depositional sequences described for the Yessabah Limestone.
• Analyze the facies shift from clastic rocks to crinoidal limestone documented in the stratigraphic succession.
• Study the alternating dominance of crinoid-rich and bryozoan-rich faunal assemblages reported in the limestone units.
• Correlate the described sea-level fall at the Carboniferous-Permian boundary with basinward facies shifts and the deposition of the Parrabel Beds.

Strengths

• Analysis is grounded in a specific geological formation, the Permian Yessabah Limestone, within the defined Manning-Macleay Basin.
• Provides a detailed sequence stratigraphic framework including lowstand, transgressive, and highstand systems tracts.
• Documentation includes specific facies associations like braided-stream gravels, mass-movement Parrabel Beds, and distal turbidites.

Limitations

• Data is presented as narrative documentation in HTML/PDF, not as structured, queryable tabular or spatial data.
• Sample data and quantitative measurements like row or column counts are unavailable for computational analysis.
• The study focuses on a specific region (Hastings Block, NSW), limiting broader geographical applicability.

Provenance

Source

Geoscience Australia Data

Collection Method

Geological field study and sequence stratigraphic analysis.

Time Range

Permian period, specifically the Yessabah Limestone formation.

Freshness

Last updated March 2026.

Geography

Manning-Macleay Basin, Hastings Block, northeastern New South Wales, Australia.