Blue Holes of the Pompey Reefs, Great Barrier Reef: Dimensions and Geology

Geoscience Australia Data provides a study of two drowned dolines, or blue holes, at Cockatoo and Molar Reefs in the Pompey Reefs of the Great Barrier Reef. The dataset describes their physical dimensions, slope angles, sediment structures, and biological associations, with seismic refraction data indicating a pre-Holocene surface. The data was last updated on 2026-04-30.

Use Cases

• Modeling submarine karst formation based on described diameter, depth, and slope characteristics.
• Analyzing sediment infill patterns based on described sediment fans and terraces.
• Studying coral reef geomorphology and biological zonation based on described rim and slope associations.
• Investigating sea-level change impacts on reef structures based on the inferred multi-period formation hypothesis.

Strengths

• Provides specific dimensional ranges: holes are 240-295 m in diameter and 30-40 m deep.
• Includes detailed slope angle measurements: 60-70° at Cockatoo and 45° at Molar.
• Contains results from seismic refraction studies showing a shallow (8.5-11 m) pre-Holocene surface.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided in PDF and HTML formats, which may require extraction for computational analysis.

Provenance

Source

Geoscience Australia Data

Collection Method

Field observations and seismic refraction studies, as described.

Freshness

Last updated 2026-04-30 14:26:27.839904; freshness should be verified.

Geography

Cockatoo and Molar Reefs, Pompey Reefs, Great Barrier Reef