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L065, L066, L068 & L069 Southern Carnarvon Basin seismic reflection and refraction survey, WA, 1963, 1964

Created 16/10/2025

Updated 16/10/2025

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A seismic reconnaissance, traverse was surveyed for 20 miles along an east-west line,. 10 miles 'north of -Carnarvon, as part of a regional investigation of the southern part of the Carnarvon Basin, W.A. Both reflection and refraction techniques were used, and the results were Correlated, where possible, with the known formations in the Pelican Hill bore. Several reflecting horizons could be followed although reflections from below the level of the Cretaceous/Palaeozoic unconformity were badly interfered by multiples. The refraction method was successful, and recorded three main refractors with velocities of 14750.ft/sec, 18400 ft/sec, and 20,280 ft/sec. The main feature of the section obtained is a broad antiform within the Palaeozoic sediments, shown particularly by the 20 2 280 ft/sec refractor, which is_a good marker. for structural mapping. This marker has been tentatively correlated with the Dirk Hartog Dolomite, which would suggest that the strata underlying the Gneudna Formation in the Pelican Hill bore belong to the Nanyarra Greywacke rather than the Tumblagooda Sandstone. Overall the profile of the 20 2 280 ft/sec marker has a slight west dip from about 4000 feet at the eastern end to about 5000 feet at the western end of the traverse. The Cretaceous/Palaeozoic unconformity was fairly flat at a depth of about 1500 feet. Indications from the reflection cross-section and from the profile of the 18,400.ft/sec refractor are that the sediments between the two above horizons are similar in structural attitude to the deeper horizon.

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Title L065, L066, L068 & L069 Southern Carnarvon Basin seismic reflection and refraction survey, WA, 1963, 1964
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/3aa5ced3-0e6f-4057-98fa-2bff47f04bca
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 26/06/1964 - 28/08/1964
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        114.5,
        -26.0
      ],
      [
        116.25,
        -26.0
      ],
      [
        116.25,
        -25.0
      ],
      [
        114.5,
        -25.0
      ],
      [
        114.5,
        -26.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "L065, L066, L068 & L069 Southern Carnarvon Basin seismic reflection and refraction survey, WA, 1963, 1964". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/l065-l066-l068-l069-southern-carnarvon-basin-seismic-reflection-and-refraction-survey-1963-1964