Southern Great Barrier Reef Carbonate Reef Foundations, Lithology and Diagenesis

The southern Great Barrier Reef contains a Holocene reef developed on older foundations extending to 420 meters depth, ranging from late Pleistocene to middle Miocene in age. Geoscience Australia Data provides this dataset, last updated in March 2026, detailing petrographic analysis of limestone subjected to subaerial diagenesis in vadose and phreatic zones. The description highlights a prominent solution unconformity, soil and calcrete development, and variations in freshwater lens environments during subaerial exposure.

Use Cases

• Modeling reef foundation stratigraphy based on described lithological successions.
• Analyzing subaerial diagenesis processes based on described vadose and phreatic zone transformations.
• Comparing late Pleistocene and Holocene reef environments based on the described duplication of environments.
• Studying the impact of sea-level change on reef structures based on the described solution unconformity.

Strengths

• Dataset describes a specific geological feature with a depth range of up to 420 meters.
• Provides temporal context with age ranges from late Pleistocene to middle Miocene.
• Includes detailed petrographic analysis of diagenetic processes like leaching and neomorphic replacement.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, focusing on a specific region of the Great Barrier Reef.

Provenance

Source

Geoscience Australia Data

Time Range

Covers late Pleistocene to middle Miocene and Holocene periods.

Freshness

Last updated 2026-03-25 18:02:31.243868; freshness should be verified.

Geography

Southern Great Barrier Reef, Australia