b'Geophysics in the surveysNewsGeoscience Australia: NewsGeoscience Australia, in collaborationmonth (documented below). Figure1the year, with the first phase of the rotary with its state and territory partners,and the tables following this sectioncomponent (covering the south coast, finished the year with another solidshow GA-managed survey status as ofblocks A -D), released during this quarter. programme of strategic geophysicalNovember 2021. Table1 details survey specifications, with surveying around the continent. Theflight lines shown in Figure 2.Geological Survey of QueenslandsAusAEM coverage through Western Canobie airborne gravity programme,Australia Figure 3 shows an example of the the Northern Territory Geologicalquality of the data, including stacked Survey ground gravity programmeGeoscience Australia and Westernprofiles and GA inversion results on line over the eastern Tanami, and theAustralia (Department of Mines, Industry100901, just to the south of Peel Inlet extension of AusArray through southernRegulation and Safety) commissionedand the township of Pinjarra. Saltwater Northern Territory - all managed inthe AusAEM-20 survey as part of theincursion into Tertiary gravels and sands conjunction with Geoscience Australia-national airborne electromagneticof the Perth Basin limit EM penetration will also see regional geophysicalacquisition programme, to completeuntil east of the inlet, where a number surveying continue well into the ides of20 km line separation AEM coverageof conductors within the Jurassic give December. over Western Australia. The 60 000-linesome idea to the variation in depth to km programme was jointly acquiredsub-basin depo-centres. Further along, With this Preview edition, we are alsoby geophysical contractors Xcaliburthe rise into the Darling Ranges is pleased to announce the completion of(fixed-wing Tempest) and SkyTEM (rotaryclearly identified by a steeply dipping the Western Australia regional airbornewing) throughout 2021. Acquisition wasconductive sheared gneiss of the Darling EM programme across southern Westerncompleted in November 2021. Scarp contact, with more resistive Australia (AusAEM20). The final release ofgranitic terrain continuing to the east. data is expected in January following aAll fixed-wing data (covering the central toWhile somewhat noisier, this resistive release of the south-western blocks lasteastern portions) were released earlier interrain has a depth of investigation well Figure 1.2020 -2021 geophysical surveysin progress, planned or still for release by Geoscience Australia in collaboration with State and Territory agencies. Background image of national TMI compilation, Geoscience Australia, 2019.11 PREVIEW DECEMBER 2021'