Blue Holes of the Pompey Reefs: Dimensions and Geological Features

Two roughly circular blue holes on the Pompey Reefs of the Great Barrier Reef, measuring 240-295 meters in diameter and 30-40 meters deep. The dataset, from the Australian Ocean Data Network, describes their distinct biological and sedimentary associations, steep inner slopes, and evidence suggesting they are collapsed dolines formed over multiple low sea-level periods. It was last updated on 2026-04-10.

Use Cases

• Modeling submarine karst formation processes based on described slope angles and sediment fan development.
• Analyzing the relationship between coral growth and geological structure based on rim descriptions.
• Studying sediment infill patterns in submerged depressions based on the described fan and terrace features.
• Correlating pre-Holocene surfaces with modern reef morphology based on seismic refraction study mentions.

Strengths

• Provides specific dimensional ranges: diameters of 240-295 meters and depths of 30-40 meters.
• Includes detailed geomorphological observations, such as slope angles of 60-70° and 45°.
• Offers a geological hypothesis (collapsed dolines) supported by described evidence.

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 two specific reef sites.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely contains field observations and seismic refraction studies.

Time Range

null

Freshness

Last updated 2026-04-10 22:19:21.342872; freshness should be verified.

Geography

Cockatoo and Molar Reefs, Pompey hard line reefs, Great Barrier Reef