b'Education matters BSc (Honours) theses Subprovince or temporally separated periods of subsequent deformation.Audrey Quealy, Monash University: Palaeozoic evolution of northeastEdgar Leong, Australian National Queensland: Implications from theUniversity: Maps to buried treasure: Inkerman Metamorphics. Exploring the geodynamic setting of enigmatic mineral systemsis important. The Archean Yilgarn craton is a notable example of mineralisation being structurally controlled. The Yamarna terrane is the easternmost of the Yilgarn and has been relatively under-explored. The Tasmanides, which make up theIn the Yamarna terrane, there is a working eastern third of the Australian continent,understanding that mineralisation is are a series of broadly N-S trendingcontrolled by late sinistral transpression orogenic belts formed through Palaeozoic,while no studies have suggested gold progressively eastward accretionaryrelated to other deformation events. This tectonics. Whilst this ~N-S structural grainstudy proposed a deformation scheme for is preserved across much of northeastthe South Hirono Domain, in the Yamarna Queensland, anomalous geometries,To address the global exhaustion ofTerrane, to better understand the structural including the ENE-WSW-trending Charterssurficial mineral deposits, a paradigm shiftcontrols on mineralisation.Towers Province (Thomson Orogen),in exploration targeting is necessary forPetrophysical and structural data were indicate an intricately complex and vastlylocation of new resources that may becollected across three diamond drill holes overprinted tectonic evolution, whichburied deep under cover. This endeavourin the South Hirono Domain. The Domain has been interpreted to relate to oroclinerequires an improved understanding ofpredominantly consisted of differentiated formation. In this study, a lithostructuralthe geodynamic setting of high-gradedolerites that were classified into two sills: geophysical interpretation of the junctionmineral deposits. In this Honours thesis,one magnetite-bearing differentiated between the Connors Subprovince (Newwe examine spatial links between severaldolerite sill and a differentiated dolerite England Orogen) and Charters Towersof these deposits and present-daysill. The magnetite-bearing sill and an Province was undertaken to assess thislithospheric structure, as well as temporalintermediate porphyry unit were quite major boundary. This interpretation foundrelationships between mineralisationmagnetically susceptible relative to other that Benambran deformation producedin sedimentary basins and the tectoniclithologies in this domain. The distribution ENE-WSW-trending sinistral strike-slipprocesses that govern their formation.of these two units at the regional scale faults in the Charters Towers domain andUsing robust statistical analysis, we showwas the basis for interpreting processed subsequent N-S to NNW- SSE eastward- that 75% of the worlds IOCG and 65% ofgeophysical maps. These large-scale dipping thrust faults associated with themagmatic sulphide deposits are foundgeophysical observations were used early Hunter-Bowen Orogeny and thewithin 200 km either side of lithospherealongside structural observations at accretion of the Connors Arc system. Athat is 180 km and 210 km in thickness,the core and petrographic scales to subsequent re-activation along ENE- respectively. We also investigate theunderstand the deformation history as WSW sinistral faults was observed and issubsidence history and formationaccurately as possible.interpreted to indicate localised migrationmechanisms of the Isa Superbasin and to ~NE-SW directed shortening during thefind that its world-class sediment-hostedThe dominant fabric identified in dolerites late Hunter-Bowen Orogeny. mineral systems likely formed duringis a composite fabric of the primary continental rifting, whereas its IOCGlayering and S1 defined by layer-parallel A regional curvature evident in thedeposits postdate basin formation. Thisshear fabrics, which are axial planar structural grain of northeast Queenslandstudy demonstrates the potential for usingto recumbent F1 folds. The dominant is defined by remanent Late Proterozoiclithospheric thickness and subsidencefolding developed during D2, defining to Early Palaeozoic basement sequencesanalysis as novel exploration tools,the regional F2 antiform. Potentially and metamorphic belts. High-resolutionsimultaneously providing implicationsprospective quartz-carbonate and quartz (40 m) aeromagnetics and satellitefor our understanding of the formationvein sets formed pre-D3. D3 sinistral imagery reveal intersecting NNW-SSEmechanisms of resource-rich basins andtranspression that truncates F2 folds likely and WSW-ENE structural trends in theother enigmatic mineral systems. focused both prospective vein sets, as Inkerman Metamorphics (ConnorsElliott Barrington, Monash University:they are associated with elevated gold Subprovince), proximal to the locationMultiscale analysis of the structuralconcentrations within the D3 Smokebush of the fold axial trace of an inferredarchitecture of the under-explored Southshear zone. Subtle open folding developed orocline. Geological field mappingHirono Domain within the Yamarnaduring D4 and affected previous D1-3 reveals that no evidence of oroclinalTerrane, Western Australia structures. Steep brittle dextral faults bending is preserved in the Inkermandefine D5 and crosscut all previous Metamorphics. Rather, the change inThe Late Archean hosts much of the worldsstructures. The proposed deformation trend perhaps reflects overprinting of thegold endowment, so understanding thescheme informed the structural model of Charters Towers Province by the Connorsdistribution of mineralisation across timethe domains architecture.33 PREVIEW DECEMBER 2022'