Murray Basin (Hay Narrandera Deniliquin Jerilderie) radiometrics (non-AWAGS line data)

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 Murray Basin (Hay Narrandera Deniliquin Jerilderie) radiometrics (non-AWAGS line data) were acquired in 1987 by the NSW Government, and consisted of 55220 line-kilometres of data at 1500m line spacing and 150m terrain clearance.