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Sandstone combined dose rate grid geodetic

Created 16/10/2025

Updated 16/10/2025

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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. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered terrestrial dose rate grid. This Sandstone combined dose rate grid geodetic has a cell size of 0.0005 degrees (approximately 52m) and shows the terrestrial dose rate of the Sandstone-Lake Mason-Arenite merge, 1994-2000. The data used to produce this grid was acquired in 1994 by the WA Government, and consisted of 64185 line-kilometres of data at a line spacing between 200m and 400m, and 40m terrain clearance.

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Additional Info

Field Value
Title Sandstone combined dose rate grid geodetic
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/a258edb7-50fa-4a46-bdec-638fe3b89ff6
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 01/02/1994 - 01/12/2000
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        118.4745,
        -28.1313
      ],
      [
        120.01,
        -28.1313
      ],
      [
        120.01,
        -26.9778
      ],
      [
        118.4745,
        -26.9778
      ],
      [
        118.4745,
        -28.1313
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Sandstone combined dose rate grid geodetic". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/sandstone-combined-dose-rate-grid-geodetic