The world’s largest high-resolution airborne geophysical and terrain imaging program, the Gawler Craton Airborne Survey, is setting the foundation for the next generation of scientific data, informing resource exploration in South Australia.

The survey was undertaken by the Government of South Australia in partnership with Geoscience Australia. The survey data acquisition, processing and data delivery is complete. Additional value-added, enhanced data packages and seamless merged grid products are now available for download.

The new data

About the survey

The survey has captured approximately 1,660,000 line kilometres of new magnetic, radiometric and digital elevation data over an area of about 295,000 km2. This new data surpasses the previous patchwork of historical surveys and provides the basis for a single, internally consistent dataset that will be fundamental in reinterpreting the geological structure of the Gawler Craton.

The geophysical data was captured by four geophysical contractors, using fixed-wing aircraft flying approximately 60 m above the ground along flight lines spaced 200 m apart. Survey acquisition was completed in June 2019.

Find out more about geophysical data; what it is; why we need it; and how it is used.