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Tectonic evolution and lode gold mineralisation in the Southern Cross district, Yilgarn Craton (Western Australia): a study of the meso- to Neoarchaean missing link. In the December quarter 2008, Gold export earnings increased by 2 per cent to $3.9 billion. Over the past 20 years and despite an increase in exploration expenditure to around $50 million per year, the discovery rates have been declining. Although the easy targets have been found, there remains considerable potential for future ma ....Tectonic evolution and lode gold mineralisation in the Southern Cross district, Yilgarn Craton (Western Australia): a study of the meso- to Neoarchaean missing link. In the December quarter 2008, Gold export earnings increased by 2 per cent to $3.9 billion. Over the past 20 years and despite an increase in exploration expenditure to around $50 million per year, the discovery rates have been declining. Although the easy targets have been found, there remains considerable potential for future major discoveries. This project addresses the pressing need for new data and improved exploration techniques to enable industry to target new discoveries. As the Southern Cross district is located in remote communities such discoveries also have major benefits for regional Australia.Read moreRead less
LATE PALAEOZOIC PALAEOGEOGRAPHY OF CENTRAL ASIA: A PALAEOBIOGEOGRAPHICAL APPROACH USING IMPROVED BIOSTRATIGRAPHY. Fossil data from Central Asia (Afghanistan, Uzbekistan, Pakistan, NW China, Mongolia, Altaids) indicate significant degree of palaeo-latitudinal variation in biogeographical patterns across the Palaeo-Tethys and its flanking shelves during Late Palaeozoic, but details of these patterns and implications for enhancing contemporaneous palaeogeographical models are virtually unknown. Thi ....LATE PALAEOZOIC PALAEOGEOGRAPHY OF CENTRAL ASIA: A PALAEOBIOGEOGRAPHICAL APPROACH USING IMPROVED BIOSTRATIGRAPHY. Fossil data from Central Asia (Afghanistan, Uzbekistan, Pakistan, NW China, Mongolia, Altaids) indicate significant degree of palaeo-latitudinal variation in biogeographical patterns across the Palaeo-Tethys and its flanking shelves during Late Palaeozoic, but details of these patterns and implications for enhancing contemporaneous palaeogeographical models are virtually unknown. This project will analyse the biogeographical patterns of Late Palaeozoic brachiopod, coral, fusulinid faunas using advanced statistical methods, and integrate biogeographical signals with palaeomagnetic data to constrain models for the Late Palaeozoic geological evolution of Central Asia-a vast region that is known to bear enormous potential for natural resources but remains geologically little explored.Read moreRead less
Low-grade metamorphic phosphate geochronology: High-precision dating of ancient crustal fluid flow, hydrothermal mineralisation and the "Great Oxidation Event". Reliable dating techniques are required to obtain precise ages for ancient crustal fluid flow. Current techniques suffer from inheritance and isotopic resetting, problems that are particularly pronounced in early Precambrian rocks. This project will employ new analytical techniques to date phosphate minerals recently identified as potent ....Low-grade metamorphic phosphate geochronology: High-precision dating of ancient crustal fluid flow, hydrothermal mineralisation and the "Great Oxidation Event". Reliable dating techniques are required to obtain precise ages for ancient crustal fluid flow. Current techniques suffer from inheritance and isotopic resetting, problems that are particularly pronounced in early Precambrian rocks. This project will employ new analytical techniques to date phosphate minerals recently identified as potentially important new chronometers of ancient fluid flow, providing the first precise tectonothermal history of the Archaean Pilbara Craton. The project will also establish the age of giant iron-ore deposits across the Hamersley Province, test the various models for iron-ore formation, and provide a minimum age for the oxidation of the Earth's surface. Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668377
Funder
Australian Research Council
Funding Amount
$246,000.00
Summary
Western Australia Palaeomagnetic and Rock-magnetic Facility. The WA Palaeomagnetic and Rock-magnetic Facility is an essential piece of infrastructure for geoscience developments in WA and Australia in general. It not only serves the needs of the scientific community, but also supports resource-related projects sponsored by government and the resource industries, and serves the educational needs of postgraduate, undergraduate, and school students. Upgrading of the WA facility will enhance the res ....Western Australia Palaeomagnetic and Rock-magnetic Facility. The WA Palaeomagnetic and Rock-magnetic Facility is an essential piece of infrastructure for geoscience developments in WA and Australia in general. It not only serves the needs of the scientific community, but also supports resource-related projects sponsored by government and the resource industries, and serves the educational needs of postgraduate, undergraduate, and school students. Upgrading of the WA facility will enhance the research capacity of the WA geoscience community and maintain its international position in tectonic, palaeogeographic, and palaeoclimatic studies, and in ore genesis research.Read moreRead less
Evolution of a two billion year subduction zone: Insights from the integration of microstructure and geochronology. The dynamic evolution of the earth is fundamentally linked to its thermal history. Since, the internal heat production of the earth has changed over time, plate tectonic processes may also have changed over earth history. The manner and timing of this change is highly controversial. We aim to address the nature of tectonic processes 2 billion years ago by studying one of the wor ....Evolution of a two billion year subduction zone: Insights from the integration of microstructure and geochronology. The dynamic evolution of the earth is fundamentally linked to its thermal history. Since, the internal heat production of the earth has changed over time, plate tectonic processes may also have changed over earth history. The manner and timing of this change is highly controversial. We aim to address the nature of tectonic processes 2 billion years ago by studying one of the world's oldest subduction zones (the Usagarian belt in Tanzania). The geometry, kinematics and deformation history of the subduction complex will be integrated with radiometric age dating to quantify the style and rates of ancient tectonic processes.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE100100064
Funder
Australian Research Council
Funding Amount
$450,000.00
Summary
A facility for sensitive and precise isotopic dating of the earth's and extraterrestrial rocks. SPIDE2R will be a new generation mass spectrometer for very precise and sensitive dating and forensics applications in earth and planetary sciences, hydrology, climate studies, and nuclear and archaeological fingerprinting. The unprecedented sensitivity of this unique instrument will provide enhanced capabilities for solving long-standing problems requiring precise geological time resolution, as well ....A facility for sensitive and precise isotopic dating of the earth's and extraterrestrial rocks. SPIDE2R will be a new generation mass spectrometer for very precise and sensitive dating and forensics applications in earth and planetary sciences, hydrology, climate studies, and nuclear and archaeological fingerprinting. The unprecedented sensitivity of this unique instrument will provide enhanced capabilities for solving long-standing problems requiring precise geological time resolution, as well as opening new areas of research. It will be the instrument of choice for analysing small, rare samples such as those returned by space missions. The Australian-built high sensitivity source and ion detection systems can be retrofitted onto other mass spectrometers, opening a new area of commercialisation.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0882854
Funder
Australian Research Council
Funding Amount
$6,000,000.00
Summary
Australian Membership of the Integrated Ocean Drilling Program. Membership of the Integrated Ocean Drilling Program (IODP) will provide high-leverage access to the largest, and most effective international geoscience program.
Results from drilling within Australia's marine jurisdiction will give understanding of the oceans' state under past climates through high resolution records of the range of oceanographic and biological responses to climate change, the role of the deep biosphere in shapin ....Australian Membership of the Integrated Ocean Drilling Program. Membership of the Integrated Ocean Drilling Program (IODP) will provide high-leverage access to the largest, and most effective international geoscience program.
Results from drilling within Australia's marine jurisdiction will give understanding of the oceans' state under past climates through high resolution records of the range of oceanographic and biological responses to climate change, the role of the deep biosphere in shaping oil and gas deposits, hydrothermal and igneous processes involved in ore genesis, and enhanced understanding of some of the world's largest earthquake- and tsunami-generating processes.
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The dynamic strength of continents and how they break apart. Sedimentary basins formed as a result of continental extension are the source of many oil and gas and geothermal resources. The geometries of the deepest part of these basins and their temporal and thermal evolution, are essential for basin prospectivity, but can seldom be investigated directly. This Australia-based project is expected to overhaul how we understand continental deformation, which is a crucial, but relatively vaguely und ....The dynamic strength of continents and how they break apart. Sedimentary basins formed as a result of continental extension are the source of many oil and gas and geothermal resources. The geometries of the deepest part of these basins and their temporal and thermal evolution, are essential for basin prospectivity, but can seldom be investigated directly. This Australia-based project is expected to overhaul how we understand continental deformation, which is a crucial, but relatively vaguely understood, component of plate tectonics. By modelling continental extension, the project will improve our understanding of basin development, deep geometry, and heat distribution, providing the basis for new applied and specific research projects directed at enhancing energy resource exploration. Read moreRead less
Proterozoic tectonic evolution of Australia and India. Recent studies cast doubt on reconstructions of the Neoproterozoic supercontinent Rodinia, and on the tectonic coherence of East Gondwanaland (Australia, Antarctica and India). Within Australia, the relative positions of the major crustal blocks during most of the Proterozoic era remain largely unverified. Fossil magnetism in rocks of different ages from the major crustal blocks of Australia and India will be used to determine whether the ....Proterozoic tectonic evolution of Australia and India. Recent studies cast doubt on reconstructions of the Neoproterozoic supercontinent Rodinia, and on the tectonic coherence of East Gondwanaland (Australia, Antarctica and India). Within Australia, the relative positions of the major crustal blocks during most of the Proterozoic era remain largely unverified. Fossil magnetism in rocks of different ages from the major crustal blocks of Australia and India will be used to determine whether the blocks were together or were separated by large oceans during Proterozoic time. The results will place fundamental constraints on the geological, palaeogeographic, and palaeobiological evolution of Australia, Rodinia, and the early Earth as a whole.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