From Australian Oceans Data Network
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Seismic refraction - a tool for studying coral reef growth

Created 12/02/2026

Updated 12/02/2026

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Seismic refraction studies have been conducted in close proximity to shallow boreholes previously drilled at Bewick (Northern Great Barrier Reef), Hayman (Central Great Barrier Reef) and Heron Islands (Southern Great Barrier Reef). Results show a seismic discontinuity at depths similar to the unconformity separating Holocene and pre-Holocene carbonates in the boreholes. Extensive seismic refraction studies have been conducted in the Capricorn/Bunker Reefs to assess the effects of substrate on modern reef growth, and the classification of modern reefs in the area. One hundred and twenty-four profiles were completed on six reefs. A marked seismic discontinuity, detected at depths ranging from 8-23 m, is equated with the Holocene/ pre-Holocene unconformity identified in the boreholes. Results show that the pre-Holocene surface forms a central depression with a raised rim around the perimeter beneath those reefs which have lagoons. This also appears to be the case beneath those reefs which presently have small or no lagoons, the inference being that Holocene sedimentation and growth have infilled the original depressions. The geophysical evidence does not support the claim that reefs of the southern Great Barrier Reef follow a latitudinal genetic sequence, but rather that the varied growth forms of the Holocene reefs have been determined to a considerable extent by the shape of the pre-Holocene surface.

Files and APIs

Tags

Additional Info

Field Value
Title Seismic refraction - a tool for studying coral reef growth
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/a6e235e9-d464-413a-bcfe-5adef5d5f1e5
Contact Point
Australian Ocean Data Network
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        151.5,
        -24.0
      ],
      [
        152.5,
        -24.0
      ],
      [
        152.5,
        -23.0
      ],
      [
        151.5,
        -23.0
      ],
      [
        151.5,
        -24.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Seismic refraction - a tool for studying coral reef growth". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/seismic-refraction-a-tool-for-studying-coral-reef-growth5