The Etheridge Airborne Gravity Gradiometer (AGG) survey of Northern Queensland was flown between April 8th to 1st June 2024. Contracted to Xcalibur Smart Mapping, Geoscience Australia undertook the project management, contract management and quality control on behalf of the Geological Survey of Queensland. The located data, gridded data and quality control reports are contained within this record. Survey area was centered on longitude 143° 31’ E and latitude 18° 27’ S to the east of Croydon. A total of 53 production flights were flown for a combined total of 32,482.0 line kilometres of data and acquired on 1000 m line spacing at 100 m nominal terrain clearance. Quality control was performed by airborne gravity consultant Dr Mark Dransfield on behalf of Geoscience Australia, with his report included here. The survey was designed to supplement the regional legacy ground gravity data and improve the definition of gravimetric anomalies in the region. In addition, the AGG survey will provide better understanding of the cover sequence thickness and characteristics of the underlying basement geology. The data will also be released by the Geological Survey of Queensland and can be found at: https://geoscience.data.qld.gov.au/data/gravity-gradiometry/gg104290. Survey Name: Etheridge airborne gravity gradiometery survey, 2024 Datasets Acquired: Gravity gradiometry, gravity, digital terrain model Geoscience Australia Project Number: P5025 Acquisition Start Date: 08/04/2024 Acquisition End Date: 01/06/2024 Flight line spacing: 1000 m Flight line direction: East-West (090-270) Total distance flown: 32,482.0 line km Nominal terrain clearance: 100 m Blocks: 1 Data Acquisition: Xcalibur Smart Mapping Project Management: Geoscience Australia Quality Control: Mark Dransfield on behalf of Geoscience Australia Dataset Ownership: Geological Survey of Queensland and Geoscience Australia Included in this release: 1. Point-located Data ASCII-column data in ASEG-GDF format with accompanying description and definition files. • Gravity gradiometry data including the various corrections • Gravity gradiometry data noise estimates • Vertical gravity estimate including various reduction and levelled corrections • Digital terrain model 2. Grids Gridded data in ERMapper (.ers) format (GDA2020/MGA zone 54): • Free-air vertical gravity gradiometry • Free-air corrected vertical gravity • Terrain and bouguer corrected vertical gravity gradiometry (densities for terrain correction: 2.3g/cm3 and 2.67 g/cm3) • Terrain and bouguer corrected vertical gravity (densities for terrain correction: 2.3g/cm3 and 2.67 g/cm3) • Conformed, terrain and bouguer corrected vertical gravity gradiometry (densities for terrain correction: 2.3g/cm3 and 2.67 g/cm3) • Conformed, terrain and bouguer vertical gravity (densities for terrain correction: 2.3g/cm3 and 2.67 g/cm3) • Digital terrain model 3. Reports • Contractors Logistics Report • Quality Control Report (Mark Dransfield)

<div>The Canobie Airborne Gravity Gradiometer (AGG) survey of Northern Queensland was flown between 24 November and 3 December 2021. </div><div>Contracted to Xcalibur Multiphysics, Geoscience Australia undertook the project management, contract management and quality control on behalf of the Geological Survey of Queensland. </div><div>The located data, gridded data and quality control reports are contained within this record. </div><div><br></div><div>Survey area was centered on latitude 19° 31’ 04” S and longitude 140° 44’ 14” E to the north of Cloncurry. A total of 8 production flights were flown for a combined total of 4,712.4 </div><div>line kilometers of data and acquired on 1000 m line spacing at 80 m nominal terrain clearance</div><div>Quality control was performed by airborne gravity consultant Dr Mark Dransfield on behalf of Geoscience Australia, with his report included here.</div><div><br></div><div>The survey was designed to supplement the regional legacy ground gravity data and improve the definition of gravimetric anomalies in a region deemed highly prospective for base metals exploration. </div><div>In addition, the AGG survey will provide better understanding of the cover sequence thickness (estimated to be less than 100 m) and characteristics of the underlying basement geology. </div><div><br></div><div>The data was released by the Geological Survey of Queensland on March 29 and can be found at https://geoscience.data.qld.gov.au/dataset/gg100099/resource/geo-spa460972-gg100099. </div><div><br></div><div>Survey Name: Canobie airborne gravity gradiometery survey,2021</div><div>Datasets Acquired: Gravity gradiometry, digital terrain model</div><div>Geoscience Australia Project Number: P5021</div><div>Acquisition Start Date: 24/11/2021</div><div>Acquisition End Date: 03/12/2021</div><div>Flight line spacing: 1000 m</div><div>Flight line direction: East-West (090-270)</div><div>Total distance flown: 4,712 line-km</div><div>Nominal terrain clearance: 80 m</div><div>Blocks: 1</div><div>Data Acquisition: Xcalibur Multiphysics</div><div>Project Management: Geoscience Australia</div><div>Quality Control: Mark Dransfield on behalf of Geoscience Australia</div><div>Dataset Ownership: Geological Survey of Qld and Geoscience Australia</div><div><br></div><div>Included in this release:</div><div>1. Point-located Data</div><div>ASCII-column data with accompanying description and definition files.</div><div>• Gravity gradiometry data including the various corrections</div><div>• Gravity gradiometry data noise estimates</div><div>• Vertical gravity estimate including various reduction and levelled corrections</div><div>• Digital terrain model</div><div><br></div><div>2. Grids</div><div>Gridded data in ERMapper (.ers) format (GDA2020):</div><div>• Gravity gradiometry</div><div>• Free-air corrected vertical gravity</div><div>• Terrain and bouguer corrected vertical gravity</div><div>• Digital terrain model</div><div><br></div><div>3. Reports</div><div>• Contractors Logistics Report</div><div>• Quality Control Report (Mark Dransfield)</div><div><br></div><div>4. Location</div><div>• ARCGIS shape file</div><div><br></div><div><br></div><div>© Geological Survey of Queensland and Commonwealth of Australia (Geoscience Australia) 2021. With the exception of the Commonwealth Coat of Arms and where otherwise noted, this product is provided under a Creative Commons Attribution 4.0</div>

CGG Aviation (now Xcalibur Multiphysics) collected airborne gravity data in the Kidson area covering parts of the Gibson and Great Sandy Deserts in central Western Australia as part of a collaborative project between Geoscience Australia (GA) and the Geological Survey of Western Australia (GSWA). The aim of the project was to collect airborne gravity gradiometry data in the region at 2500 m wavelength resolution to help characterise key undercover geological elements of the region. The survey consisted of a Main block and an Extension block. Data were acquired from North/South flight lines (Main block) and East-West flight lines (Extension block) with an average target ground clearance of 120m. Tie lines at 25,000m line spacing were flown only for the Main block. A total of 78,700 line kilometres of data were collected during the survey. <b>Survey details</b> Survey Name: Kidson WA airborne gravity gradiometer survey 2017 State/Territory: Western Australia Datasets Acquired: Airborne gravity gradiometer Geoscience Australia Project Number: Acquisition Start Date: July 21, 2017 Acquisition End Date: May 3, 2018 Number of blocks: 2 Flight line spacing: 2,500m Flight line direction: Area 1 - 180 deg/ NS; Area 2 - 270 deg/EW Tie line spacing: 25,000m Tie line direction: Area 1 only - 270 deg / EW Total distance flown: 78,700 line kilometres Nominal terrain clearance (above ground level): 120m Clearance method: Drape Aircraft type: 2 aircrafts with different Falcon AGG system installed - Cessna Grand Caravan 208B / Full spectrum Falcon system Kepler/Newton Data Acquisition: CGG Aviation Australia Pty Ltd Project Management: Geoscience Australia Quality Control: Dr Mark Dransfield contracted by Geoscience Australia Dataset Ownership: Western Australia and Geoscience Australia <b>Files included in this download</b> The original agreement with CGG Aviation Australia Pty Ltd (CGG) stated that gradient point located data was available for purchase on non-exclusive terms from CGG until 30 June 2027, after which date the gradient data would be made public. In July 2021, the terms of the agreement changed after Xcalibur Multiphysics acquired CGG Aviation Pty Ltd. Xcalibur authorised the release of the gradient data. A new final dataset and report was generated by Xcalibur and delivered to Geoscience Australia. This data release contains the gradient point located data. <b>1. Point-located Data / line data</b> ASEG-GDF2 and Geosoft GDB format with accompanying description and definition files. The sample frequency is 8Hz. <b>2. Grids</b> Datum: GDA2020 Projection: MGA 51 Grid cell size: 500m Formats: Geosoft GRD and ERMapper (.ers) with accompanying description files. <b>3. Reports</b> • Final survey logistic report delivered to Geoscience Australia by the survey contractor. • Kidson QC report from Dr Mark Dransfield The data from this Kidson airborne gravity gradiometry survey has been released and can be downloaded from the Geological Survey of Western Australia’s MAGIX platform at https://magix.dmirs.wa.gov.au and GeoVIEW.WA web mapping application at https://geoview.dmp.wa.gov.au/GeoView under reference number 71234.

The Blackall Airborne Gravity Gradiometer (AGG) survey of Central Queensland was flown between March 11th to 6th April 2024. Contracted to Xcalibur Smart Mapping, Geoscience Australia undertook the project management, contract management and quality control on behalf of the Geological Survey of Queensland. The located data, gridded data and quality control reports are contained within this record. Survey area was centered on longitude 147° 21’ E and latitude 25° 16’ S to the south of Blackall. A total of 34 production flights were flown for a combined total of 15,705.4 line kilometres of data and acquired on 1000 m line spacing at 100 m nominal terrain clearance. Quality control was performed by airborne gravity consultant Dr Mark Dransfield on behalf of Geoscience Australia, with his report included here. The survey was designed to supplement the regional legacy ground gravity data and improve the definition of gravimetric anomalies in the region. In addition, the AGG survey will provide better understanding of the cover sequence thickness and characteristics of the underlying basement geology. The data will be released by the Geological Survey of Queensland and can be found at: https://geoscience.data.qld.gov.au/data/gravity-gradiometry/gg104288. Survey Name: Blackall airborne gravity gradiometery survey, 2024 Datasets Acquired: Gravity gradiometry, gravity, digital terrain model Geoscience Australia Project Number: P5024 Acquisition Start Date: 11/03/2024 Acquisition End Date: 06/04/2024 Flight line spacing: 1000 m Flight line direction: East-West (090-270) Total distance flown: 15,705.4 line km Nominal terrain clearance: 100 m Blocks: 1 Data Acquisition: Xcalibur Smart Mapping Project Management: Geoscience Australia Quality Control: Mark Dransfield on behalf of Geoscience Australia Dataset Ownership: Geological Survey of Queensland and Geoscience Australia Included in this release: 1. Point-located Data ASCII-column data in ASEG-GDF format with accompanying description and definition files. • Gravity gradiometry data including the various corrections • Gravity gradiometry data noise estimates • Vertical gravity estimate including various reduction and levelled corrections • Digital terrain model 2. Grids Gridded data in ERMapper (.ers) format (GDA2020/MGA zone 55): • Free-air vertical gravity gradiometry • Free-air corrected vertical gravity • Terrain and bouguer corrected vertical gravity gradiometry (densities for terrain correction: 2.0g/cm3 and 2.67 g/cm3) • Terrain and bouguer corrected vertical gravity (densities for terrain correction: 2.0g/cm3 and 2.67 g/cm3) • Conformed, terrain and bouguer corrected vertical gravity gradiometry (densities for terrain correction: 2.0g/cm3 and 2.67 g/cm3) • Conformed, terrain and bouguer vertical gravity (densities for terrain correction: 2.0g/cm3 and 2.67 g/cm3) • Digital terrain model 3. Reports • Contractors Logistics Report • Quality Control Report (Mark Dransfield)