b'ASEG newsCommitteesinto various geophysics processes. InDissemination etal., 2022) (Figure 2). In 2024, we are 2023, ~30% of the year has been spentpreparing a manuscript describing the applying aspects of what was learntThe remaining 20% of the year has beenwork undertaken during this field trip from this trip in the processing of twospent on disseminating scientific resultsAuld etal., 2024.field tests, one to the You Yangs nationalfrom the PhD to the wider community. park and the other to a landfill site inMatthew delivered two presentations at Ballarat. These field surveys involved theinternational conferences this year, theReferencescollection of magnetic and electric fieldfirst on interference simulation of the sets of ground penetrating radar dataantenna with a model rover body (AuldAuld, M., Walsh, A., Macnae, J., & Iles, G. N., 2023. Electromagnetic interference of ground penetrating which have been processed in attemptset al., 2023), and the second on collatingradar antennae with a lunar rover. AIAC 2023: to show subsurface features in each fieldlunar orbiter radar data to generate a20th Australian International Aerospace Congress. dataset. Both field datasets have alsomap of potential lava tube sites in theEngineers Australia. https://search.informit.org/been used in attempts to determine thesouth pole region of the moon (Tomas,doi/10.3316/informit.068744310188941viability of using a combination of fields2023) that may be targeted by a roverTomas, K., 2023. Mapping lava tube sites using can be used to find the conductivity ofmounted lunar penetrating rover.Lunar Orbiter Ground-Penetrating Radar. the subsurface materials, as opposed toONPS2186 Third Year Report. RMIT University.estimating the dielectric constant fromPublications Auld, M. W., Macnae, J. C. and Iles, G. N., electric field data alone. So far this has2022. Lightweight Ground Penetrating Radar been unsuccessful, but future surveys areIn 2022 Matthew undertook an extensivedevices for operation in space. 2022 Annual planned to collect more appropriate andfield trip in Queensland to use MAPRadMeeting of Planetary Geologic Mappers held specific data to work towards this aspect. to map the Undara lava tubes (Auld22-23 June, 2022 in Flagstaff, Arizona and Virtually. LPI Contribution No. 2684, id.7022. 2022LPICo2684.7022A Auld, M. W., Macnae, J. C. and Iles, G. N., 2024. Miniaturised penetrating radar antennas for lava-tube detection. Geophysics. (In preparation)RF23M01 University of WA, MSc Student Abhijit Kurup (Supervisor ProfMike Dentith)Understanding magnetic responses in high-grade gneiss terrains in the Southwest Figure 1. MAPRad PCB design of receiver antenna amplifier. (a) Altium design (b) receiver amplifier. Yilgarn Craton, Western Australia.This study involved the interpretation of high-resolution aeromagnetic data from the southwest Yilgarn Craton, a region recognised for its mineral prospectivity, by integration with magnetic susceptibility (MS), petrography and biotite geochemistry data. The study area is the amphibolite-granulite facies granite-gneiss dominant domain 2 of the Youanmi Terrane. Geology and MS data collection was made on the limited outcrops that are available. The aeromagnetic data was used to extrapolate the bedrock geology interpretation to parts of the area without outcrop.Field work, MS data and the study of the Fe-Ti oxide minerals allowed the classification of the local granitoids based on oxygen fugacity as either oxidized magnetite-series granites or reduced ilmenite-series granites. The chemistry of biotites through electron probe microanalysis has also aided the classification of granitoids Figure 2. GPR data collected at Undara National Park, Queensland with both electrical (top) and magneticbased on the I-type metaluminous and (bottom) data indicating the presence of an uncollapsed section of a lava tube. S-type peraluminous sources. The two 14 PREVIEWFEBRUARY 2024'