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Multiscale dynamics of ore body formation. Future discoveries of giant ore-bodies will undoubtedly be under surface cover. Modelling of new data from South Australia and Western Australia will define targeting criteria for new major ore-bodies, thus exploiting Australia's deep earth resource potential. New understanding of controls on mineralisation decrease exploration risk. Ore-bodies, such as Olympic Dam, have made major contributions to Australia's economy over past decades and promise to ad ....Multiscale dynamics of ore body formation. Future discoveries of giant ore-bodies will undoubtedly be under surface cover. Modelling of new data from South Australia and Western Australia will define targeting criteria for new major ore-bodies, thus exploiting Australia's deep earth resource potential. New understanding of controls on mineralisation decrease exploration risk. Ore-bodies, such as Olympic Dam, have made major contributions to Australia's economy over past decades and promise to add increased value over future decades. This project enhances the probability that at least one other ore-body of this type will be discovered. Such discoveries contribute directly to the wealth of Australia through export earnings and accelerate the development of regional infrastructure and new technological development.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE130100053
Funder
Australian Research Council
Funding Amount
$190,000.00
Summary
An AZtec electron backscatter diffraction facility for state-of-the-art quantitative microstructural analysis. Establishing a state-of-the-art quantitative microstructural analysis facility will provide critical infrastructure to compliment existing high-spatial resolution microanalytical techniques and facilitate pure and applied research in the geoscience over the next decade.
Revisiting The Alpine Paradigm: The Role Of Inversion Cycles In The Evolution Of The European Alps. This project aims to evaluate a new theory that suggests mountain belts are repeatedly built and then destroyed, taking advantage of the youthful and classic natural laboratory offered by the European Alps. We will use geochronology, structural geology and metamorphic petrology to track individual rocks through time and space, and compare the results with predictions made by computer simulations. ....Revisiting The Alpine Paradigm: The Role Of Inversion Cycles In The Evolution Of The European Alps. This project aims to evaluate a new theory that suggests mountain belts are repeatedly built and then destroyed, taking advantage of the youthful and classic natural laboratory offered by the European Alps. We will use geochronology, structural geology and metamorphic petrology to track individual rocks through time and space, and compare the results with predictions made by computer simulations. The initiation of these episodes of immense destruction in mountain belts occurs at the same time as the creation of deep Earth resources. This project will, as its main outcome, provide the foundation for future theoretical understanding of these remarkable coincidences.Read moreRead less
Exploration potential and implications for stress transfer modelling in fault-related mineral deposits. Following our success in the application of stress transfer modelling (STM) techniques to understand the clustered distribution of upper crustal, Archean gold deposits within crustal scale fault systems, this project seeks to test and develop the application of STM in (1) gold systems formed below the crustal seismogenic regime, (2) for deposit-scale targeting, and (3) in a range of fault-re ....Exploration potential and implications for stress transfer modelling in fault-related mineral deposits. Following our success in the application of stress transfer modelling (STM) techniques to understand the clustered distribution of upper crustal, Archean gold deposits within crustal scale fault systems, this project seeks to test and develop the application of STM in (1) gold systems formed below the crustal seismogenic regime, (2) for deposit-scale targeting, and (3) in a range of fault-related mineral deposits other than Archaean gold systems. The project will also develop methods to evaluate the combined roles of co-seismic stress transfer and post-seismic fluid redistribution in influencing deposit distribution. The approach provides a new conceptual framework in which to develop exploration strategies for deep earth resources.Read moreRead less
Integrated dynamic models of subduction initiation, slab evolution, arc - back-arc deformation and mantle convection. A major debate in plate tectonics concerns the driving mechanism for formation of extensional back-arc basins in the overriding plate along a convergent tectonic boundary, where a subducting plate is thrust into the mantle underneath an overriding plate. One hypothesis states that such extension results from sinking and rollback of the subducting plate. The physical validity of t ....Integrated dynamic models of subduction initiation, slab evolution, arc - back-arc deformation and mantle convection. A major debate in plate tectonics concerns the driving mechanism for formation of extensional back-arc basins in the overriding plate along a convergent tectonic boundary, where a subducting plate is thrust into the mantle underneath an overriding plate. One hypothesis states that such extension results from sinking and rollback of the subducting plate. The physical validity of this hypothesis will be tested using both laboratory and numerical modelling techniques. The modelling will investigate overriding plate - subducting plate - mantle interaction in three-dimensional space and quantify the role of key physical parameters on the subduction process.Read moreRead less
Where to find giant porphyry and epithermal gold and copper deposits. This project will determine when and where giant gold or copper deposits should form, consolidating links with Indonesia, and using South East Asia as a vast natural laboratory in which to examine the effect of large-scale tectonic processes. The project will produce a four-dimensional virtual exploration toolkit to show how to apply the methods.
Deformational controls on the dynamics of fluid flow, hydrothermal alteration and gold mineralisation, Argo Gold deposit, WA. Detailed structural analysis, combined with major and trace element geochemistry and stable isotope geochemistry, will be used to explore the 3D evolution of fluid pathways and their relationship to growth of shear zones, vein networks and alteration patterns in the Argo shear-hosted gold deposit. The research will be used to (1) maximise the efficiency of resource defini ....Deformational controls on the dynamics of fluid flow, hydrothermal alteration and gold mineralisation, Argo Gold deposit, WA. Detailed structural analysis, combined with major and trace element geochemistry and stable isotope geochemistry, will be used to explore the 3D evolution of fluid pathways and their relationship to growth of shear zones, vein networks and alteration patterns in the Argo shear-hosted gold deposit. The research will be used to (1) maximise the efficiency of resource definition and extraction, (2) refine resource exploration models, (3) explore the dynamics of gold mineralisation processes in shear zones, and (4) advance understanding of how coupling between deformation, fluid flow, and fluid-rock reaction influence the mechanical behaviour of the Earth's crust.Read moreRead less
Time- and Temperature-Dependence of the Fluid Transport Properties, Strength and Mechanical Behaviour of Crustal Faults - An Experimental and Modelling Study. High temperature rock deformation experiments will be performed in conjunction with high resolution, computer-aided x-ray microtomography to determine time-dependent and temperature-dependent effects on fluid transport properties, strength and mechanical behaviour during slip and interseismic healing of simulated fault rocks in hydrotherma ....Time- and Temperature-Dependence of the Fluid Transport Properties, Strength and Mechanical Behaviour of Crustal Faults - An Experimental and Modelling Study. High temperature rock deformation experiments will be performed in conjunction with high resolution, computer-aided x-ray microtomography to determine time-dependent and temperature-dependent effects on fluid transport properties, strength and mechanical behaviour during slip and interseismic healing of simulated fault rocks in hydrothermal environments. The results will be used with cellular automaton modelling approaches to develop a quantitative understanding of how coupling between fluid flow and rock deformation controls earthquake rupture and fluid migration in fault networks in the continental seismogenic regime. This work will provide new understanding of triggers for earthquake nucleation and controls on localisation of ore deposits.Read moreRead less
A unified model for the closure dynamics of ancient Tethys constrained by geodesy, structural geology, argon geochronology and tectonic reconstruction. The project will elucidate complex planetary dynamics involved in the interaction of the oceanic plates with the continental crust. Such aspects underpin the ability of geoscientists to effectively simulate and model, impacting on issues ranging from forecasting earthquakes to how to conduct greenfields exploration for energy and mineral resource ....A unified model for the closure dynamics of ancient Tethys constrained by geodesy, structural geology, argon geochronology and tectonic reconstruction. The project will elucidate complex planetary dynamics involved in the interaction of the oceanic plates with the continental crust. Such aspects underpin the ability of geoscientists to effectively simulate and model, impacting on issues ranging from forecasting earthquakes to how to conduct greenfields exploration for energy and mineral resources.Read moreRead less
Dynamic permeability and the evolution of fluid pathways in fracture-controlled hydrothermal systems. This project will advance knowledge of how fracture-controlled fluid flow at depth in the Earth influences the strength and mechanical behaviour of the crust, earthquake processes, and the formation of hydrothermal ore systems. Fundamental new knowledge of the dynamic variations in fluid transport properties and flow distribution in deep fracture networks also will have application for understan ....Dynamic permeability and the evolution of fluid pathways in fracture-controlled hydrothermal systems. This project will advance knowledge of how fracture-controlled fluid flow at depth in the Earth influences the strength and mechanical behaviour of the crust, earthquake processes, and the formation of hydrothermal ore systems. Fundamental new knowledge of the dynamic variations in fluid transport properties and flow distribution in deep fracture networks also will have application for understanding hydrocarbon migration in fractured reservoirs, controls on seal integrity in geosequestration projects, and for geothermal energy production from hot, fractured rock. The project will develop international collaboration and train young scientists in applying multidisciplinary approaches to exploring fluid systems in the Earth's crust.Read moreRead less