b'Geophysics in the surveysNewsGeological Survey of Victoria and the Geological Survey of South Australia: Newmagnetotelluric (MT) profiles across Victoria and South AustraliaThe Geological Survey of Victoria (GSV)Australian border, and across the MurrayThe MT data will be publicly available and Geological Survey of South AustraliaBasin from Murray Bridge to Swan Hill inthrough the respective State surveys and (GSSA) are collaborating to acquireVictoria (Figures 1 and 2). will be modelled by GSSA to produce magnetotelluric (MT) data across thecrustal-scale electrical resistivity cross-Delamerian Orogen in northwest VictoriaThe GSV-GSSA MT survey contributes tosections beneath the two profiles. The and southeast South Australia. a wider programme of regional pre- new models will augment and further competitive geoscience acquisitionrefine publicly available AusLAMP MT Zonge Engineering and Researchplanned for the region, including deepmodels of the region (e.g. Delamerian Organization (Australia) Pty Ltd havecrustal reflection seismic, ground gravityAusLAMP Model, Robertson et al, been engaged to collect broadband MTand airborne electromagnetic surveys.2020). The new data and models data. Acquisition will be at a nominalThese activities are part of Geosciencewill provide electrical constraints to 3-4 km site interval along a 750 km routeAustralias Exploring for the Futureimprove understanding of the regional from the Spencer Gulf in South Australiaprogramme and MinEx CRCs Nationalgeology and structural architecture of to Pinnaroo on the Victorian-SouthDrilling Initiative in South Australia. the Delamerian Orogen and its eastern boundary with the Lachlan Orogen.ReferenceRobertson, K., Kirkby, A.L., Thiel, S., Duan, J., 2020. Lithospheric resistivity model of the Delamerian Orogen from AusLAMP magnetotelluric data. Geoscience Australia, Canberra. http://pid.geoscience.gov.au/dataset/ga/144077Suzanne Haydon Geological Survey of Victoria Suzanne.Haydon@ecodev.vic.gov.auStephan Thiel Figure 1.Zonge magnetotelluric survey crew installing a vertical magnetic sensor in South AustraliaGeological Survey of South Australia (Source: Zonge Australia, 2019) Stephan.Thiel@sa.gov.auFigure 2.Location map showing proposed magnetotelluric survey route through Victoria and South Australia25 PREVIEW JUNE 2022'