Mechanisms of proxy uptake in biominerals. This project plans to combine nano-analytical and aquaculture methods to develop new models that improve the reliability of paleoclimate reconstructions. The compositions of shells and skeletal materials of marine invertebrates are essential archives for quantifying temperatures and environmental conditions before modern climate records began. However, their reliability relies on understanding their formation. Emerging knowledge from material sciences i ....Mechanisms of proxy uptake in biominerals. This project plans to combine nano-analytical and aquaculture methods to develop new models that improve the reliability of paleoclimate reconstructions. The compositions of shells and skeletal materials of marine invertebrates are essential archives for quantifying temperatures and environmental conditions before modern climate records began. However, their reliability relies on understanding their formation. Emerging knowledge from material sciences indicates that these biocarbonates form via transient precursors rather than direct precipitation from seawater, profoundly affecting their interpretation. This project plans to transfer this new understanding to the earth sciences using nanoscale analytical methods including in vitro geochemical partitioning experiments. This would enable realistic models for geochemical proxy behaviour to be developed, significantly improving paleoclimate interpretations and assessments of ocean acidification effects on marine calcifiers.Read moreRead less
Carbon and Hydrogen in Melts and Fluids in Planetary Interiors. The Australian community will benefit by the ownership of widely used high impact research in published earth science. This research defines the melting behaviour of silicate-rich materials (terrestrial planets, rocky-moons, meteorites) within the solar system. The research will be required for interpretation of Martian samples and will help to ensure that Australian laboratories participate in 21st Century investigations of the Sol ....Carbon and Hydrogen in Melts and Fluids in Planetary Interiors. The Australian community will benefit by the ownership of widely used high impact research in published earth science. This research defines the melting behaviour of silicate-rich materials (terrestrial planets, rocky-moons, meteorites) within the solar system. The research will be required for interpretation of Martian samples and will help to ensure that Australian laboratories participate in 21st Century investigations of the Solar System by virtue of their leading roles in understanding volcanism and melting behaviour at high pressures and under variable oxidation states. The research will address a national priority in sustainability of earth resources i.e. knowledge underpinning formation of Australian mineral resources.Read moreRead less
Role of water in earth and planetary evolution. This project aims to understand the role of water in the building of our solar system, Mars and Earth. Surprisingly little is known about key issues surrounding the origin of water and its subsequent recycling on Earth. This project will use new techniques for measuring low abundances of water along with oxygen isotopes, to measure water abundances and oxygen isotopes in meteorites and terrestrial rocks to establish how water was delivered to Earth ....Role of water in earth and planetary evolution. This project aims to understand the role of water in the building of our solar system, Mars and Earth. Surprisingly little is known about key issues surrounding the origin of water and its subsequent recycling on Earth. This project will use new techniques for measuring low abundances of water along with oxygen isotopes, to measure water abundances and oxygen isotopes in meteorites and terrestrial rocks to establish how water was delivered to Earth and to understand how water is geologically recycled. This is expected to have direct bearing on where and how Earth's water originated, how water is retained in mantle and crustal minerals and it will have broad implications for understanding volcanic hazards and formation of ore deposits. This will lead to a new capability for combined water and oxygen isotope analysis in Australian geoscience leading to technological development and commercialisation of instrumentation.Read moreRead less
Experimental and natural constraints on trace element and volatile recycling in subduction zones. The results of this project will provide important constraints on the differentiation of Earth, which ultimately leads to the concentration of elements suitable for mining. Trace element and volatile recycling in subduction zones is an integral part of the research theme 'Journey to the centre of the Earth' which has been identified as a key project (4.4) in the national strategic plan for geoscienc ....Experimental and natural constraints on trace element and volatile recycling in subduction zones. The results of this project will provide important constraints on the differentiation of Earth, which ultimately leads to the concentration of elements suitable for mining. Trace element and volatile recycling in subduction zones is an integral part of the research theme 'Journey to the centre of the Earth' which has been identified as a key project (4.4) in the national strategic plan for geosciences. CO2 recycling in subduction zones is crucial for our understanding of the long-term greenhouse gas variations on Earth. The ANU is one of the world-leading research institutions in experimental petrology and geochemistry, and the outcomes of this project will ensure that Australia remains at the forefront in these disciplines.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE160100169
Funder
Australian Research Council
Funding Amount
$365,206.00
Summary
Redox evolution of basaltic magmas. The project aims to contribute to our understanding of the redox state (the oxidation and reduction of chemicals) of the Earth’s mantle and how it changes in space and time. The redox state of the Earth’s mantle controls the valency of elements such as iron and the speciation of volatiles (eg hydrogen, carbon and sulphur) that degas from volcanoes and ultimately make up the atmosphere. This project aims to quantify the changes in redox state experienced by var ....Redox evolution of basaltic magmas. The project aims to contribute to our understanding of the redox state (the oxidation and reduction of chemicals) of the Earth’s mantle and how it changes in space and time. The redox state of the Earth’s mantle controls the valency of elements such as iron and the speciation of volatiles (eg hydrogen, carbon and sulphur) that degas from volcanoes and ultimately make up the atmosphere. This project aims to quantify the changes in redox state experienced by various types of basaltic magmas. The outcomes of the project could help us to model the transport of metals in magmas and predict ore deposits, and assess the nature and relative contributions of volatiles that degas from volcanoes.Read moreRead less
Australian Laureate Fellowships - Grant ID: FL130100066
Funder
Australian Research Council
Funding Amount
$3,187,712.00
Summary
Understanding the Earth: a perspective from the science of advanced materials. The study of the properties of naturally occurring minerals and magmas under extreme conditions of high temperature and pressure is needed, for understanding the geological processes responsible for our mineral wealth. The same methods can also lead to improved design of new materials required for technological applications.
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
Determining fossilisation processes of a rare iron-rich Lagerstätte. Most fossil sites only preserve resistant elements such as bones and teeth, leading to questions about how soft animals and structures have evolved over time. The recent discovery of a fossil deposit in New South Wales appears to demonstrate a new set of conditions for the preservation of soft tissues. This project aims to constrain the age of and assess the fossilisation processes that produced this unique fossil site. We will ....Determining fossilisation processes of a rare iron-rich Lagerstätte. Most fossil sites only preserve resistant elements such as bones and teeth, leading to questions about how soft animals and structures have evolved over time. The recent discovery of a fossil deposit in New South Wales appears to demonstrate a new set of conditions for the preservation of soft tissues. This project aims to constrain the age of and assess the fossilisation processes that produced this unique fossil site. We will use an integrative approach to reconstruct the formation of this Lagerstätte. The work will provide significant advances in our understanding of the process of fossilisation and guide the discovery of other exceptionally-well preserved fossil deposits, critical in reconstructing the biological history of Australia.Read moreRead less
Industrial Transformation Training Centres - Grant ID: IC230100035
Funder
Australian Research Council
Funding Amount
$5,000,000.00
Summary
ARC Training Centre in Critical Resources for the Future. The proposed ARC Training Centre in Critical Resources aims to train the next generation of geoscientists needed to enable resourcing of the transition to a high-tech, clean energy society. Training of PhD students and postdoctoral scientists will primarily focus on bridging the gap between mineral systems science, mineral exploration protocols and ore processing/metallurgical extraction. This will provide geoscientists with an essential ....ARC Training Centre in Critical Resources for the Future. The proposed ARC Training Centre in Critical Resources aims to train the next generation of geoscientists needed to enable resourcing of the transition to a high-tech, clean energy society. Training of PhD students and postdoctoral scientists will primarily focus on bridging the gap between mineral systems science, mineral exploration protocols and ore processing/metallurgical extraction. This will provide geoscientists with an essential understanding of the whole value chain of the critical resources of the future.
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Carbon dioxide sequestration more than 3.7 billion years ago and the oldest climate cycles. More than 3.7 billion years ago atmospheric greenhouse CO2 was sequestered into limestone sedimentary rocks deposited in ice-free oceans. Why then, with the 30-25 per cent cooler sun in those times, was our earth not frozen over? Solving this oldest climate problem, will give the deepest-time perspective to the earth's changing climate feedback loops.