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Montague Is thorium grid

Created 17/10/2025

Updated 17/10/2025

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The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This radiometric thorium grid has a cell size of 0.00167 degrees (approximately 182m) and shows thorium element concentration of the Prince Regent, Camden Sound, Montague Sound, WA, 1994 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1994 by the WA Government, and consisted of 61497 line-kilometres of data at 800m line spacing and 100m terrain clearance.

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Additional Info

Field Value
Title Montague Is thorium grid
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/9c5029d5-4a6f-4a4c-8c0b-3d69acafdc56
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 01/06/1994 - 11/07/1994
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        124.4862,
        -15.0142
      ],
      [
        126.0145,
        -15.0142
      ],
      [
        126.0145,
        -13.9859
      ],
      [
        124.4862,
        -13.9859
      ],
      [
        124.4862,
        -15.0142
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Montague Is thorium grid". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/montague-is-thorium-grid