Airborne magnetics survey plane

Upgrading geophysical data coverage

Increased resolution of regional geophysical datasets to target exploration under cover.

The Northern Territory Geological Survey (NTGS) is undertaking targeted regional scale magnetic-radiometric or gravity data acquisition programs in prospective areas to improve data quality and density to modern standards.

The geophysical surveys are funded through Resourcing the Territory with Geoscience Australia providing contract management and quality assurance on behalf of NTGS. Geophysical data acquired through these surveys will be available through NTGS via GEMIS or through Geoscience Australia via GADDS.

NTGS Brunette Downs Ground Gravity Survey

Ground gravity data is currently being acquired as part of the NTGS Brunette Downs Ground Gravity Survey. The survey covers an area of around 57,000 square kilometres located just north of Tennant Creek and extending to the Northern Territory - Queensland border. The survey will acquire over 11,500 ground gravity readings at 2 km spacing funded through the Northern Territory Government’s Resourcing the Territory initiative and over 5,500 ground gravity readings at 1 km or 500 m spacing funded by industry partners. The preliminary data will be released in a staged approach as acquisition continues.

Download the preliminary data though our FTP site. New data will be added as it becomes available .


This publication contains preliminary data that has not undergone final quality control.  The Northern Territory of Australia give no warranty or assurance, and make no representation as to the accuracy of any information or advice contained in this publication, or that it is suitable for your intended use. You should not rely upon information in this publication for the purpose of making any serious business or investment decisions without obtaining independent and/or professional advice in relation to your particular situation. The Northern Territory of Australia disclaim any liability or responsibility or duty of care towards any person for loss or damage caused by any use of, or reliance on the information contained in this publication.


Creative Commons Attribution 4.0 International (CC BY 4.0). Please observe and retain any copyright or related notices that accompany this material and give attribution to: Northern Territory of Australia (NT Geological Survey) and the Commonwealth of Australia (Geoscience Australia), 2022.

NTGS Mount Peake - Crawford Survey

The NTGS Mount Peake – Crawford Airborne Magnetic and Radiometric Survey was acquired in 2019 and covers an area of approximately 22,000 square km. The survey is centred 250km NNE of Alice Springs and extends from the Tanami Region in the west to 40km east of the Barrow Creek township.

Data was collected along 200m spaced north-south lines at 60m ground clearance. Industry partners are participating in this survey by funding infill data to 100m line spacing over areas of interest.

NTGS Tanami Region Survey

The NTGS Tanami Region Airborne Magnetic and Radiometric Survey was acquired in 2018 over more than 42,000 square km extending from the West Australian border to approximately 300km west of Tennant Creek. The survey was flown at 200m line spacing and more than 240,000 line km were acquired. Industry partners funded an additional 30,000 line km of infill data at 100m spacing.