Minerals replacement reactions: understanding mineral formation under hydrothermal conditions. Many geological processes involve the transformation of one mineral into another. By understanding molecular-level reaction mechanisms, we can predict how fast reactions progress, and what the final product will look like. This project focuses on a reaction mechanism called 'coupled dissolution-reprecipitation', in which the parent mineral is dissolved into a thin layer of fluid at the reaction front, ....Minerals replacement reactions: understanding mineral formation under hydrothermal conditions. Many geological processes involve the transformation of one mineral into another. By understanding molecular-level reaction mechanisms, we can predict how fast reactions progress, and what the final product will look like. This project focuses on a reaction mechanism called 'coupled dissolution-reprecipitation', in which the parent mineral is dissolved into a thin layer of fluid at the reaction front, and the daughter mineral subsequently precipitates. This concept will be applied to sulfide minerals for the first time. The results have many applications for the Australian mining industry, in particular in improving the efficiency of the processing of Ni- and Au-ores.Read moreRead less
Effect of deep-sea drilling on sustainability of deep-sea ecosystems. Offshore oil and gas production makes a significant contribution to the Australian economy and enhances our energy security. Australia's vast deep-sea reserves of hydrocarbons lie on the NW Shelf and in Bass Strait, ecological 'hot spots' that are extremely vulnerable to the impact of exploration, extraction and production. Using deep-sea equipment, we will conduct the field experiments that are essential to understanding the ....Effect of deep-sea drilling on sustainability of deep-sea ecosystems. Offshore oil and gas production makes a significant contribution to the Australian economy and enhances our energy security. Australia's vast deep-sea reserves of hydrocarbons lie on the NW Shelf and in Bass Strait, ecological 'hot spots' that are extremely vulnerable to the impact of exploration, extraction and production. Using deep-sea equipment, we will conduct the field experiments that are essential to understanding these ecosystems and the impact of deep-sea structures. Our advances will produce data and develop methodologies that will make Australia a world leader in reconciling our deep-sea energy and environmental needs.Read moreRead less
A microscopic and analytical study of extreme thermophile bacteria in simulated environments compared to organic matter in early Earth hydrothermal systems. The study will examine microbial cells and organic residues of cultured thermophilic archaea from simulated extreme environments in terms of temperature, pressure and mineral concentrations. These will be compared, applying observational and geochemical techniques to organic material in geologically earliest ecosystems. A novel approach will ....A microscopic and analytical study of extreme thermophile bacteria in simulated environments compared to organic matter in early Earth hydrothermal systems. The study will examine microbial cells and organic residues of cultured thermophilic archaea from simulated extreme environments in terms of temperature, pressure and mineral concentrations. These will be compared, applying observational and geochemical techniques to organic material in geologically earliest ecosystems. A novel approach will be adopted, of 'backtracking' changes occurring to cultured microbial cells towards their breakdown and disintegration (in contrast to the more common approach of simulating synthesis of organic compounds as a starting point towards structured functioning organisms), and their viability limits. The results of the study will be tested within the currently available theoretical models for the origin of life.Read moreRead less
Reduction of risk in exploration for petroleum liquids. Australia has an urgent need to establish additional reserves of crude oil. A feature of petroleum exploration in recent decades has been discovery of vast reserves of natural gas but an inability to replace our diminishing reserves of crude oil. Clearly new technology is required to enhance our capability to recognise crude oil-prone rather than gas-prone source rocks. The proposed project will establish the fundamental geochemical pro ....Reduction of risk in exploration for petroleum liquids. Australia has an urgent need to establish additional reserves of crude oil. A feature of petroleum exploration in recent decades has been discovery of vast reserves of natural gas but an inability to replace our diminishing reserves of crude oil. Clearly new technology is required to enhance our capability to recognise crude oil-prone rather than gas-prone source rocks. The proposed project will establish the fundamental geochemical processes that will support the potential exploration techniques, developed with Woodside Energy Limited support.Read moreRead less
Heterogeneity and ecosystem function: The role of microphytobenthos and macrofauna in inducing spatial variability in biogeochemical processes and fluxes. Human disturbances such as eutrophication (nutrient enrichment) increasingly threaten the sustainable use of Australia's coastal seas. Management of threats such as eutrophication are usually based on observations at large spatial scales, but ecological processes underpinning nutrient dynamics occur at much smaller scales. This multi-disciplin ....Heterogeneity and ecosystem function: The role of microphytobenthos and macrofauna in inducing spatial variability in biogeochemical processes and fluxes. Human disturbances such as eutrophication (nutrient enrichment) increasingly threaten the sustainable use of Australia's coastal seas. Management of threats such as eutrophication are usually based on observations at large spatial scales, but ecological processes underpinning nutrient dynamics occur at much smaller scales. This multi-disciplinary study will examine the relationship between processes mediated by small organisms (microscopic algae and burrowing animals), and large-scale nutrient dynamics pattern on sheltered coasts. Modern technologies will be used for monitoring the micro-scale processes, allowing models to be constructed to benefit both scientists and policy-makers alike.Read moreRead less
Special Research Initiatives - Grant ID: SR0354605
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
The Earth System Dynamics Network for a Sustainable Australia. Earth comprises systems of enormous complexity that sustain all life and control the distribution of mineral, energy and water resources. Thus understanding these dynamic systems provides the key to sustainable resource usage. The aim of The Earth System Dynamics Network is to facilitate scientific interactions through establishment of an earth and environmental sciences grid that links national and regional data assets with high per ....The Earth System Dynamics Network for a Sustainable Australia. Earth comprises systems of enormous complexity that sustain all life and control the distribution of mineral, energy and water resources. Thus understanding these dynamic systems provides the key to sustainable resource usage. The aim of The Earth System Dynamics Network is to facilitate scientific interactions through establishment of an earth and environmental sciences grid that links national and regional data assets with high performance computing through open sourced middleware. The result will be an unparalleled predictive capacity for complex Earth systems. The outcome will be confidence in the knowledge that underpins our decisions as stakeholders to keep Australia sustainable.Read moreRead less
New developments in 3D electrical resistivity imaging of the shallow subsurface. This project is concerned with developing improved procedures for electrical imaging of hidden geological features in the subsurface. These techniques are required to solve urgent problems associated with important issues, such as natural hazards, disposal of dangerous waste, groundwater and construction of major buildings and tunnels. The project will develop new hardware, software and interpretation aids, as well ....New developments in 3D electrical resistivity imaging of the shallow subsurface. This project is concerned with developing improved procedures for electrical imaging of hidden geological features in the subsurface. These techniques are required to solve urgent problems associated with important issues, such as natural hazards, disposal of dangerous waste, groundwater and construction of major buildings and tunnels. The project will develop new hardware, software and interpretation aids, as well as providing postgraduate training in an area of vital national importance.Read moreRead less
DEVELOPMENT OF NOVEL ENVIRONMENTALLY ACCEPTABLE DRILLING FLUIDS. An innovative technique of micro-emulsion of vegetable oils and water has been developed to create a new generation, low-toxicity drilling fluids for use by the petroleum exploration industry. The project aims at investigating the chronic toxicity of new generation drilling fluids to fish, and re-formulate the drilling fluids to minimize the toxic ingredients. Biomarkers of exposure and effects such as, but not limited to, EROD ind ....DEVELOPMENT OF NOVEL ENVIRONMENTALLY ACCEPTABLE DRILLING FLUIDS. An innovative technique of micro-emulsion of vegetable oils and water has been developed to create a new generation, low-toxicity drilling fluids for use by the petroleum exploration industry. The project aims at investigating the chronic toxicity of new generation drilling fluids to fish, and re-formulate the drilling fluids to minimize the toxic ingredients. Biomarkers of exposure and effects such as, but not limited to, EROD induction, DNA damage and stress proteins will be explored in fish exposed chronically to drilling fluids or their ingredients. Outcomes include environmentally acceptable drilling fluids, and will represent the start point for multi-million dollars agriculture and manufacturing industry in Australia.Read moreRead less
Geochronology, Metallogenesis and Deposit Styles of Loei Foldbelt in Thailand and Laos PDR. The Loei volcanic-plutonic belt occurs in Thailand and Laos PDR between two major crustal terranes in mainland SE Asia: Shan-Thai in the west and Indochina terrane in the east. Several skarn type copper-gold and porphyry related epithermal gold deposits are distributed along the Loei belt, and yet these deposits are not well documented in the literature. Detailed metallogenic relations and evolution of th ....Geochronology, Metallogenesis and Deposit Styles of Loei Foldbelt in Thailand and Laos PDR. The Loei volcanic-plutonic belt occurs in Thailand and Laos PDR between two major crustal terranes in mainland SE Asia: Shan-Thai in the west and Indochina terrane in the east. Several skarn type copper-gold and porphyry related epithermal gold deposits are distributed along the Loei belt, and yet these deposits are not well documented in the literature. Detailed metallogenic relations and evolution of these mineral deposits are also poorly understood; it is not known whether they formed from single, long-lived intrusive-centred mineralised systems or multiple/episodic mineralised systems. Understanding the geotectonic and metallogenic relations of this belt have a direct benefit to Australian companies exploring in SE Asia, and the research results also can be applied back in Australia for exploration of Cu-Au deposits.Read moreRead less
Application of 3D Modelling to Mineral Exploration Under Cover: an Example from the Woods Point Region, Victoria. This project aims to develop and test cost-effective tools in understanding and exploring for buried mineral deposits. We will apply our research via a) constructing three-dimensional models to analyse, characterise and compare ore system geometries, b) constraining structural controls that lead to mineralisation in a variety of settings, c) development and testing of fluid properti ....Application of 3D Modelling to Mineral Exploration Under Cover: an Example from the Woods Point Region, Victoria. This project aims to develop and test cost-effective tools in understanding and exploring for buried mineral deposits. We will apply our research via a) constructing three-dimensional models to analyse, characterise and compare ore system geometries, b) constraining structural controls that lead to mineralisation in a variety of settings, c) development and testing of fluid properties, and d) integration of geological, structural and geochemical datasets to predict favourable sites for gold mineralisation. This project will result in a greatly improved understanding of the formation of a range of gold deposit styles, and further strategic alliances between Monash University, the Geological Survey of Victoria and exploration companies.Read moreRead less