b'Geophysics in the surveysNewsGeoscience Australia: NewsDespite many new barriers to completing long-running projects,South West McArthur Barkly Gravity Surveythe geophysical teams at Geoscience Australia continue to deliver on new pre-competitive resource datasets, interpretations andLast month also saw the release of the South West McArthur, methodologies. In collaboration with State Agencies of WesternBarkly Gravity Survey data; jointly funded under Geoscience Australia, South Australia, Northern Territory, Queensland, NewAustralias (GA) Exploring for the Future program and the South Wales, Victoria and Tasmania, the last quarter has seen aNorthern Territory Geological Surveys (NTGS) Resourcing number of substantial projects reach projects reach closure andthe Territory 2018-2022 Initiative. The survey was designed data release, as outlined in Figure1 and the tables in the sectionto aid in the resource potential mapping of the Barkly on geophysical survey progress that follow. Tablelands and infills existing 4 km gravity coverage to 2 km coverage. This is the second part of the Tennant Creek Mount While our acquisition programs are suspended, a number ofIsa (TISA) Gravity Surveys, P201901, the first being the East collaborative agreements have been signed to see significantTennant Gravity Survey P201901, NT, 2019. Acquired by Atlas airborne programs re-commence in the forthcoming financialGeophysics, the new package consists of 3303 gravity stations year, including AusAEM20, the first of hopefully many newas a point located data and grids. The data are available for airborne programs throughout Tasmania, and additional EMfree download from http://pid.geoscience.gov.au/dataset/surveying in western NSW. A June update on releases is asga/132968.follows.New groundwater AEM data releases2019 Cobar AEM data and inversion modelsData from four SkyTEM helicopter EM surveys flown over Acquired in collaboration with the Geological Survey ofWestern Australia, Northern Territory and Queensland NSW and the MinEx Cooperative Research Centre (MinExhave been finalised and will be released via GA electronic CRC), this 5900 line km survey covers nearly 20 000 km2 incatalogue on 30 June, 2020 (see Figure1). Approximately the CobarLake Cargelligo area of Central West New South10 929 line km of transient electromagnetic (TEM) and Wales. In conjunction with the techniques utility to helpmagnetic data were acquired between 2015 and 2018 delineate water resources under cover, the program focussesto support basin-focussed investigations of regional on a portion of western NSW considered highly prospectivegroundwater systems and assist with more sustainable for metallic minerals. Along with the located data set, bothutilisation.the contractors and GAs in-house inversion are available for download via GAs online catalogue system: http://pid.geoscience.gov.au/dataset/ga/135557 under MinEx CRCMike Barlow Cobar Airborne Electromagnetic Survey, NSW, 2019: XCITEGeoscience AustraliaAEM data and conductivity estimates. Mike.Barlow@ga.gov.auFigure 1.2018-2020 geophysical surveyscompleted, in progress or planned by Geoscience Australia in collaboration with State and Territory agencies13 PREVIEW JuNE 2020'