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MRTAS Weymouth Cape Portland thorium grid geodetic

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Created 13/01/2025

Updated 13/01/2025

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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 0.001 degrees (approximately 98m) and shows thorium element concentration of the NETGOLD - Weymouth-Cape Portland, TAS, 1993 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1993 by the TAS Government, and consisted of 4309 line-kilometres of data at 400m line spacing and 80m terrain clearance.

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Title MRTAS Weymouth Cape Portland thorium grid geodetic
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/b411bee1-f08d-4ca8-be73-b90df6bf9cef
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 11/11/1993 - 25/11/1993
Geospatial Coverage {"type": "Polygon", "coordinates": [[[146.9165, -41.0385], [148.0395, -41.0385], [148.0395, -40.7305], [146.9165, -40.7305], [146.9165, -41.0385]]]}
Data Portal data.gov.au