Diamonds - a window into the ancient mantle: the origin of Earth's atmosphere and outgassing of the mantle. The project will provide a better understanding of the mantle source regions of diamonds and, in particular, homogeneity/heterogeneity of the source regions as a function of space and time - potentially of economic significance for diamond exploration. The project will investigate the noble gas compositions of a systematic selection of diamonds of different ages and from different parts of ....Diamonds - a window into the ancient mantle: the origin of Earth's atmosphere and outgassing of the mantle. The project will provide a better understanding of the mantle source regions of diamonds and, in particular, homogeneity/heterogeneity of the source regions as a function of space and time - potentially of economic significance for diamond exploration. The project will investigate the noble gas compositions of a systematic selection of diamonds of different ages and from different parts of the mantle. Together with carbon and nitrogen isotope systematics, this information will be used to better constrain models of Earth outgassing and the evolution of the Earth's atmosphere and mantle.Read moreRead less
Unearthing the Marginal Terranes of the South Australian Craton: Keystone of Proterozoic Australia. This project will investigate the buried geology of vast regions of northern South Australia that is likely to be compatible with rocks that host enormous mineral wealth including the giant Broken Hill and Olympic Dam deposits. We will access these buried rocks using a program of on-shore scientific drilling that will provide the ground truth for multi-million dollar federal and state government ....Unearthing the Marginal Terranes of the South Australian Craton: Keystone of Proterozoic Australia. This project will investigate the buried geology of vast regions of northern South Australia that is likely to be compatible with rocks that host enormous mineral wealth including the giant Broken Hill and Olympic Dam deposits. We will access these buried rocks using a program of on-shore scientific drilling that will provide the ground truth for multi-million dollar federal and state government funded geophysical data acquisition. Results will help identify prospective mineral belts and determine the processes responsible for their formation.Read moreRead less
Evolution of the Proterozoic lithosphere and its bearing of sediment hosted base metal mineralisation. This project aims to determine the aspects of lithospheric evolution that led to a concentration of giant base metal mineral deposits in the Early to Middle Proterozoic (ca 1.9-1.5 billion years ago). We propose to test three related hypotheses that, if validated, will fundamentally change our view of Proterozoic metallogenesis and the way the mineral industry approaches exploration for these ....Evolution of the Proterozoic lithosphere and its bearing of sediment hosted base metal mineralisation. This project aims to determine the aspects of lithospheric evolution that led to a concentration of giant base metal mineral deposits in the Early to Middle Proterozoic (ca 1.9-1.5 billion years ago). We propose to test three related hypotheses that, if validated, will fundamentally change our view of Proterozoic metallogenesis and the way the mineral industry approaches exploration for these deposits.Read moreRead less
Cracking the sulfate isotopic composition problem in ancient hydrothermal systems: application of the Carbonate-Associated Sulfate (CAS) method. Successful exploration of the deep Earth for valuable ores requires better knowledge of ore formation conditions, to feed to predictive deposit models. Our work shows great promise of improving the quality of this raw data. Smarter ore deposit prediction would likely exert its influence over the next ten years, rather than be immediate. It will increase ....Cracking the sulfate isotopic composition problem in ancient hydrothermal systems: application of the Carbonate-Associated Sulfate (CAS) method. Successful exploration of the deep Earth for valuable ores requires better knowledge of ore formation conditions, to feed to predictive deposit models. Our work shows great promise of improving the quality of this raw data. Smarter ore deposit prediction would likely exert its influence over the next ten years, rather than be immediate. It will increase exploration efficiency, saving tens of millions of dollars currently devoted to unproductive exploration. Exploration and mining are conducted primarily in regional Australia, and a healthy mining industry is therefore directly benefits hinterland communities. It also benefits all Australians through the payment of royalties and contributions to Australia's GDP from mineral exports.Read moreRead less
Physical and Chemical Constraints of Fluid Activated Processes During the Polyphase Tectonic Evolution of the Olary Domain, S.A. The Olary Domain, eastern South Australia, underwent several phases of deformation and metamorphism. These events mobilised fluids leading, amongst other features, to the formation of breccia bodies and mineral deposits. The complex nature of the geological evolution of the region obscures relationships of fluid migration to the structural history. Fluid inclusion stud ....Physical and Chemical Constraints of Fluid Activated Processes During the Polyphase Tectonic Evolution of the Olary Domain, S.A. The Olary Domain, eastern South Australia, underwent several phases of deformation and metamorphism. These events mobilised fluids leading, amongst other features, to the formation of breccia bodies and mineral deposits. The complex nature of the geological evolution of the region obscures relationships of fluid migration to the structural history. Fluid inclusion studies and stable isotope analyses combined with structural analyses on micro to macro scales shall establish links between the thermal and structural evolution of the area. This will provide insigth into the scale and physico-chemical characteristics of fluids and mineralising processes an relate these to the tectono-thermal history.Read moreRead less
Isotopic fractionation in ore metals (Cu, Fe and Zn): A new window on ore-forming processes. Stable isotopes of common ore metals (e.g, copper and iron) are new tools for investigating ore deposits. Our data suggest that metal isotopic variations can provide new insights into mechanisms operative during formation of ore deposits. Stable metal isotopes also show promise as a new exploration tool for identifying the location of economic mineralisation within large prospective terrains; e.g., weakl ....Isotopic fractionation in ore metals (Cu, Fe and Zn): A new window on ore-forming processes. Stable isotopes of common ore metals (e.g, copper and iron) are new tools for investigating ore deposits. Our data suggest that metal isotopic variations can provide new insights into mechanisms operative during formation of ore deposits. Stable metal isotopes also show promise as a new exploration tool for identifying the location of economic mineralisation within large prospective terrains; e.g., weakly vs. strongly mineralised zones in a volcanic belt.
This project will provide fundamental baseline data that will help elucidate the processes that cause metal isotope variations. This will allow stable metal isotopes to be used much more effectively by the mining and exploration industries.
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Aiding the Search for Diamonds in South Australia: Source and origin of Mesozoic kimberlite dyke swarms and their mantle samples. Because of significant, yet tantalising, alluvial diamond discoveries in the Adelaide Hills and Flinders Ranges over more than 100 years, South Australia can be viewed to have considerable potential as a diamond producer. Yet this potential is unresolved because little is known about the occurrence and diamond content of the kimberlite source rocks that have carried t ....Aiding the Search for Diamonds in South Australia: Source and origin of Mesozoic kimberlite dyke swarms and their mantle samples. Because of significant, yet tantalising, alluvial diamond discoveries in the Adelaide Hills and Flinders Ranges over more than 100 years, South Australia can be viewed to have considerable potential as a diamond producer. Yet this potential is unresolved because little is known about the occurrence and diamond content of the kimberlite source rocks that have carried the diamonds to the near surface and shed them into the weathering environment. This collaborative research project will use new uncommonly available samples provided by commercial diamond exploration to determine the structure , geochemistry and history of the mantle that underlies the Flinders Ranges and Adelaide Hills at depths between 40 and 250km.Read moreRead less
The early evolution of the Earth system from multiple sulfur isotope records of sediments and seafloor mineral systems. This project addresses the early evolution of the Earth system that is one of the most important questions in Earth Sciences. It will use Australia's unique rock record and analytical techniques developed in Australia in collaboration with leading international researchers. The National Research Priority area 'An environmentally sustainable Australia: developing deep Earth reso ....The early evolution of the Earth system from multiple sulfur isotope records of sediments and seafloor mineral systems. This project addresses the early evolution of the Earth system that is one of the most important questions in Earth Sciences. It will use Australia's unique rock record and analytical techniques developed in Australia in collaboration with leading international researchers. The National Research Priority area 'An environmentally sustainable Australia: developing deep Earth resources' will benefit through the development of better exploration models for Archaean submarine metal deposits. Students will obtain a high level understanding of the early Earth system, ore deposits, stable isotope and transition metal geochemistry, which are directly applicable in both pure and applied research and mineral exploration.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775533
Funder
Australian Research Council
Funding Amount
$700,000.00
Summary
A New Generation Noble Gas Mass Spectrometer Facility for Advanced Research in the Earth, Planetary and Environmental Sciences. The current proposal, to establish a new Noble Gas Analytical Consortium for noble gas chronological and geochemical analyses, will generate new knowledge on the evolution of the Earth, with profound implications for past climate change, landscape evolution, formation of ore bodies, and terrestrial geodynamics. Consequently, the facility will conform to the National Res ....A New Generation Noble Gas Mass Spectrometer Facility for Advanced Research in the Earth, Planetary and Environmental Sciences. The current proposal, to establish a new Noble Gas Analytical Consortium for noble gas chronological and geochemical analyses, will generate new knowledge on the evolution of the Earth, with profound implications for past climate change, landscape evolution, formation of ore bodies, and terrestrial geodynamics. Consequently, the facility will conform to the National Research Priority of 'An Environmentally Sustainable Australia'. The new facility will ensure that Australian research remains at the forefront of international science development and will also provide essential training for the next generation of Australian scientists.Read moreRead less
Mapping Fluid Flow in the Earth's Crust: a Li and B micro-isotopic and thermodynamic study of serpentinisation. Interaction of fluids with magnesium-rich rocks creates new minerals and, on a global scale, affects the physical and chemical evolution of the Earth. On a more local scale, such fluid: rock interactions can lock up carbon dioxide via the formation of carbonate minerals. However, the extent to which such reactions may self-propagate is unclear. A primary benefit of this study will b ....Mapping Fluid Flow in the Earth's Crust: a Li and B micro-isotopic and thermodynamic study of serpentinisation. Interaction of fluids with magnesium-rich rocks creates new minerals and, on a global scale, affects the physical and chemical evolution of the Earth. On a more local scale, such fluid: rock interactions can lock up carbon dioxide via the formation of carbonate minerals. However, the extent to which such reactions may self-propagate is unclear. A primary benefit of this study will be new constraints on the viability of magnesium-rich rocks in geosequestration applications. Additional benefits will be provided by the development of advanced new analytical methodologies, and an increased level of understanding of the way that fluid flow can modify nickel sulphide ore bodies.Read moreRead less