The Earth's Deep Carbon Cycle. The climate change debate has focused scientific attention on Earth’s exogene carbon-cycle. However, Earth has another, much deeper carbon-cycle which is poorly understood. In addition to exerting a profound influence on atmospheric greenhouse gas concentrations over time scales from thousands to billions of years, it is critically important in many processes in the Earth’s deep mantle. The major means by which the deep carbon-cycle is replenished is via subduction ....The Earth's Deep Carbon Cycle. The climate change debate has focused scientific attention on Earth’s exogene carbon-cycle. However, Earth has another, much deeper carbon-cycle which is poorly understood. In addition to exerting a profound influence on atmospheric greenhouse gas concentrations over time scales from thousands to billions of years, it is critically important in many processes in the Earth’s deep mantle. The major means by which the deep carbon-cycle is replenished is via subduction of carbonate-bearing oceanic crust. The project proposes a high-pressure experimental and field-based program to understand the fate of this carbonate during its journey from the exosphere, through subduction zones and into the deep mantle.Read moreRead less
Continents in the Mantle Transition Zone? Sediment Recycling and the Geochemical Fertilization of the Deep Mantle. Because of its intrinsic compositional buoyancy, continental crust has traditionally been considered to be unsubductable in the denser underlying mantle. Yet some ocean island basalts carry a geochemical signature of recycled continental material in their plume source in the deep mantle. This project will reconcile this paradox through high-pressure experiments that will simulate su ....Continents in the Mantle Transition Zone? Sediment Recycling and the Geochemical Fertilization of the Deep Mantle. Because of its intrinsic compositional buoyancy, continental crust has traditionally been considered to be unsubductable in the denser underlying mantle. Yet some ocean island basalts carry a geochemical signature of recycled continental material in their plume source in the deep mantle. This project will reconcile this paradox through high-pressure experiments that will simulate subduction of continental sediments into the deep mantle. These experiments will provide the first empirical constraints on the role of sediment-derived fluids in mantle metasomatism and the origin of economically-rich potassic magmas, and the nature of the ultrarefractory continental component that ultimately reaches the plume source for ocean-island basalts.Read moreRead less
Resolving the influence of intraplate orogenesis on continental margin tectonics. Novel, multi-dating of continental sedimentary rocks will be undertaken to examine the effects of a high sediment flux from an enigmatic, major mountain-building event on a distant continental margin. This will expand our understanding of the range of tectonic influences between continental interiors and margins and onshore resource potential.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100047
Funder
Australian Research Council
Funding Amount
$420,000.00
Summary
Events through time: eruptions, extinctions, impacts, ore-bodies and orogenies - upgrading the national argon geochronology network. Nine universities and the CSIRO will replace aged and obsolete equipment with new mass spectrometers which will be strategically placed at opposite ends of our continent to improve access for Australian researchers to these instruments for which there is high demand. These instruments will allow more exact dating of events such as eruptions, impacts, climate change ....Events through time: eruptions, extinctions, impacts, ore-bodies and orogenies - upgrading the national argon geochronology network. Nine universities and the CSIRO will replace aged and obsolete equipment with new mass spectrometers which will be strategically placed at opposite ends of our continent to improve access for Australian researchers to these instruments for which there is high demand. These instruments will allow more exact dating of events such as eruptions, impacts, climate change, biological extinctions, mineral deposits and mountain building.Read moreRead less
Prospectivity of late Archean basaltic and gabbroic rocks associated with major gold and base-metal deposits. This project will establish a new set of criteria for the discovery of hidden deposits of gold, lead, zinc, copper and silver in rock aged between 2.8 and 2.6 billion years old. In 2009, the mining of these deposits contributed $5.5 billion dollars to Australia’s export earnings and provided the financial backbone for many regional communities.
Kinematica: Inference-Based Rapid Resource Exploration Scenario Testing. This project aims to build a new workflow for improving resource exploration evaluation by Australian companies and applied to three practical industry cases in frontier basins. The expected outcomes of this proposal are: detailed risk analysis of oil and gas prospectivity in frontier basins onshore and offshore Australia; a new strategic collaboration between Australian industry, government and universities; students train ....Kinematica: Inference-Based Rapid Resource Exploration Scenario Testing. This project aims to build a new workflow for improving resource exploration evaluation by Australian companies and applied to three practical industry cases in frontier basins. The expected outcomes of this proposal are: detailed risk analysis of oil and gas prospectivity in frontier basins onshore and offshore Australia; a new strategic collaboration between Australian industry, government and universities; students trained in advanced computational methods suitable for the evolving Australian oil and gas industry; and a software product that has high commericalisation potential. The project will transfer knowledge from European industry and universities to Australia and has applications for mineral prospectivity in sedimentary basins. 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.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE180100070
Funder
Australian Research Council
Funding Amount
$966,283.00
Summary
Cutting-edge electron probe microanalysis driving Western Australia’s resource geosciences. This project aims to provide a new generation electron microprobe, with advances in trace element mapping and cathodoluminescence analysis to enable superior characterisation of a wide range of materials. The overwhelming demand for electron probe microanalysis from research groups in Western Australia requires renewal of over-subscribed, ageing facilities to drive innovation and alleviate bottlenecks in ....Cutting-edge electron probe microanalysis driving Western Australia’s resource geosciences. This project aims to provide a new generation electron microprobe, with advances in trace element mapping and cathodoluminescence analysis to enable superior characterisation of a wide range of materials. The overwhelming demand for electron probe microanalysis from research groups in Western Australia requires renewal of over-subscribed, ageing facilities to drive innovation and alleviate bottlenecks in advanced geosciences multi-capability workflows. The electron probe will drive underpinning geoscience, resources science and economic geology, as well as support a broad range of disciplines and diverse fields, such as nanotechnology, microelectronics and aquatic sciences.Read moreRead less
Reconstructing the Beetaloo/Greater McArthur Basin System . This project aims to build a stratigraphic and water chemistry framework for the greater McArthur Basin—a rock system that covers northern Australia from WA to Queensland. This will be a vital resource for researchers and energy/mineral explorers. This project expects to develop novel sediment dating and isotopic proxies for salinity, redox and bioproductivity and use them to build a sequence stratigraphic framework of the basin. The ex ....Reconstructing the Beetaloo/Greater McArthur Basin System . This project aims to build a stratigraphic and water chemistry framework for the greater McArthur Basin—a rock system that covers northern Australia from WA to Queensland. This will be a vital resource for researchers and energy/mineral explorers. This project expects to develop novel sediment dating and isotopic proxies for salinity, redox and bioproductivity and use them to build a sequence stratigraphic framework of the basin. The expected outcome is a unique 3D lithological, geochronological and geochemical framework for the basin. Expected benefits include de-risked information for the petroleum and minerals industry, assisting northern Australia's resources economy, as well as insights into the development of our planet in deep time.Read moreRead less
Magma dynamics and ore deposits. This project aims to advance knowledge on magma transport mechanisms through the Earth’s lithosphere, and boost predictive capacity to discover new ore deposits. Using field surveys, three-dimensional reflection seismic data, laboratory experiments and rock fracture mechanics, this project will investigate where, how and why, narrow finger-like conduits form in lithosphere-scale magma plumbing systems. The project expects to generate new knowledge on the formatio ....Magma dynamics and ore deposits. This project aims to advance knowledge on magma transport mechanisms through the Earth’s lithosphere, and boost predictive capacity to discover new ore deposits. Using field surveys, three-dimensional reflection seismic data, laboratory experiments and rock fracture mechanics, this project will investigate where, how and why, narrow finger-like conduits form in lithosphere-scale magma plumbing systems. The project expects to generate new knowledge on the formation and location of highly valuable ore deposits of nickel, copper, cobalt and platinum group elements, which are preferentially trapped in poorly understood, finger-like magma conduits. Anticipated outcomes of the project include fundamental insights into how magma transport dynamics control traps for magmatic sulfide ores as well as equipping mineral explorers in targeting their search for these important, but hard to find, ore deposits, benefitting society through future discoveries of economically strategic, new commodities.Read moreRead less