b'Geophysics in the surveysNewsMineral Resources Tasmania: Regional airborne geophysical survey completedThe magnetic and radiometric survey onAs shown in the figure, the swath offinal product receipt from the contractors behalf of Mineral Resources Tasmania innew high quality data (200 m spacedand final QC by GA. Radiometric data collaboration with Geoscience AustraliaE-W flight lines, 80 m terrain clearance)will be provided in equivalent ground (GA), has now concluded. The contractorsextends over half way across the island,concentration terms, enabled by system demobilised on 2 April, with datafrom the upper Forth River to the eastcalibration via GA spectrometer ground processing and QA/QC to be finished soon. coast. In addition to traversing many ofmeasurements, as described in the Tasmanias most significant geologicalprevious edition of Preview.With extra funding made available byunits and structures, including GA as part of the Federal Governmentspotential sub-surface extensions of theIt is anticipated that magnetic and Exploring for the Future programme,Mt Read Volcanics, the survey bridgesradiometric coverage will be further the survey was extended significantlya long-standing gap in the Statesexpanded in the near future, as the beyond the boundaries previouslygeophysical coverage between thenew projects announced by the Federal published in Preview. The aim of Exploringmain body of data in the north andGovernment in March 2021 as part of its for the Future is to drive investment inwest and the 1999 southern Midlands$125M expansion of the Exploring for the the resources and agricultural sectors bysurvey. Future programme are rolled out.providing industry and land and water managers with pre-competitive dataDerived grids as well as processed lineMark Duffett about potential mineral, energy anddata will be made available from both GAMineral Resources Tasmania groundwater resources. and MRT portals as soon as possible aftermark.duffett@stategrowth.tas.gov.auFigure 1.Location of survey blocks (green outline) flown February-April 2021. Blocks 1-3 were acquired as originally planned by MRT, with the extension to blocks 4 and 5 enabled by provision of an extra $250 000 by Geoscience Australia. Block 1 was flown with a fixed-wing aircraft, and the remainder by helicopter. Horizontal black lines indicate previous similar surveys constituting the existing coverage.Free subscription to Preview online Non-members of the ASEG can now subscribe to Preview online via the ASEG website. Subscription is free. Just go to https://www.aseg.org.au/publications/PVCurrent to sign up. You will receive an email alert as soon a new issue of Preview becomes available. Stay informed and keep up-to-date by subscribing now!!NB: ASEG Members dont need to subscribe as they automatically receive an email alert whenever a new issue of Preview is published.33 PREVIEW JUNE 2021'