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Crustal Structure Across the Vulcan Sub-basin from Seismic Refraction and Gravity Data

Created 17/10/2025

Updated 17/10/2025

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The attenuated continental crust between the Kimberley Block and the Timor Trough hosts some of the major oil and gas fields in Western Australia. The crustal structure has been interpreted from wide-angle seismic data acquired by the Australian Geological Survey Organisation during 1995/96. Ten ocean-bottom seismometers were deployed along a deep seismic reflection profile aligning NW with exploration wells Fagin and Crane. Data were recorded to offsets of 300 km. A total profile 335 km long and 48 km deep has been developed, by ray-tracing and inversion modelling of the refraction data, and verified by modelling gravity data. The model differentiates 7 crustal and 2 upper mantle layers.

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Additional Info

Field Value
Title Crustal Structure Across the Vulcan Sub-basin from Seismic Refraction and Gravity Data
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/22620b63-8a0d-416e-a551-741f801610d8
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        124.25,
        -12.6
      ],
      [
        125.75,
        -12.6
      ],
      [
        125.75,
        -10.6
      ],
      [
        124.25,
        -10.6
      ],
      [
        124.25,
        -12.6
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Crustal Structure Across the Vulcan Sub-basin from Seismic Refraction and Gravity Data". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/crustal-structure-across-the-vulcan-sub-basin-from-seismic-refraction-and-gravity-data