This web service delivers the geographical extents and descriptive metadata of geophysical datasets from all surveys conducted or managed by Geoscience Australia and its predecessor agencies, as well as from State and Territory geological survey agencies. Datasets include gravity, magnetic, radiometric, and electromagnetic data, and elevation data collected during geophysical surveys. PLEASE NOTE: The layer and attribute names in this service have been modified. This may break applications and other clients with dependencies on the service. For further information please contact Geoscience Australia Client Services at clientservices@ga.gov.au.

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's 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. Once processed and enhanced, magnetic data can be used to locate structural features such as dykes and faults. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's 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. Once processed and enhanced, magnetic data can be used to locate structural features such as dykes and faults. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose

Descriptions of airborne, land, and marine geophysical surveys conducted or managed by Geoscience Australia and its predecessor agencies, as well as surveys from State and Territory geological survey agencies.

Descriptions of airborne, land, and marine geophysical surveys conducted or managed by Geoscience Australia and its predecessor agencies, as well as surveys from State and Territory geological survey agencies.

Descriptions of geophysical datasets, their associated surveys, and the methods used for delivery of those datasets. Includes datasets collected from airborne, land, and marine surveys conducted or managed by Geoscience Australia and its predecessor agencies, as well as data and surveys from State and Territory geological survey agencies

Descriptions of geophysical datasets, their associated surveys, and the methods used for delivery of those datasets. Includes datasets collected from airborne, land, and marine surveys conducted or managed by Geoscience Australia and its predecessor agencies, as well as data and surveys from State and Territory geological survey agencies