Total magnetic intensity (TMI) data measures variations in the intensity of the Earth magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data 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 magnetic grid has a cell size of 0.001 degrees (approximately 110m). The data used to produce this grid was acquired in 2000 by the WA Government, and consisted of 10950.0 line-kilometres of data at 400.0m line spacing and 80.0m terrain clearance.

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 0.000833 degrees (approximately 90m) and shows thorium element concentration of the Warburton - Bentley/Talbot, WA, 2003 survey. The data used to produce this grid was acquired in 2000 by the WA Government, and consisted of 10950.0 line-kilometres of data at 400.0m line spacing and 80.0m terrain clearance.

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 potassium grid has a cell size of 0.000833 degrees (approximately 90m) and shows potassium element concentration of the Warburton - Bentley/Talbot, WA, 2003 survey. The data used to produce this grid was acquired in 2000 by the WA Government, and consisted of 10950.0 line-kilometres of data at 400.0m line spacing and 80.0m terrain clearance.

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 uranium grid has a cell size of 0.000833 degrees (approximately 90m) and shows uranium element concentration of the Warburton - Bentley/Talbot, WA, 2003 survey. The data used to produce this grid was acquired in 2000 by the WA Government, and consisted of 10950.0 line-kilometres of data at 400.0m line spacing and 80.0m terrain clearance.