Dynamic Earth Models for Frontier Mineral Exploration. This Project aims to investigate the link between supercontinents, mantle upwelling, and associated mineral resources by combining reconstructions of mantle flow with the global rock record. Mantle upwelling causes eruptions of volcanic provinces and associated rock formations that are rich in minerals. The expected outcomes of the Project include mapping the global potential for magmatic nickel, rare-earth elements, and diamond deposits fro ....Dynamic Earth Models for Frontier Mineral Exploration. This Project aims to investigate the link between supercontinents, mantle upwelling, and associated mineral resources by combining reconstructions of mantle flow with the global rock record. Mantle upwelling causes eruptions of volcanic provinces and associated rock formations that are rich in minerals. The expected outcomes of the Project include mapping the global potential for magmatic nickel, rare-earth elements, and diamond deposits from 1.8 billion years ago and building a research alliance between the University of Wollongong, Anglo American, and De Beers. Significant benefits will be the development of a digital framework to reduce risks in exploration for minerals that are essential for the transition to a low-carbon economy.Read moreRead less
The link between cratonic roots, redox state, and mantle geodynamics. This project aims to understand the role of Earth's redox state on the geodynamic evolution of continental cratonic roots. Cratonic roots form strong, buoyant rafts upon which Australia's oldest crust and mineral deposits survived. Cratons preserve a record of planetary-scale chemical shifts, including the rise of surface oxygen, but it is unclear how these redox shifts themselves affected lithospheric processes. This project ....The link between cratonic roots, redox state, and mantle geodynamics. This project aims to understand the role of Earth's redox state on the geodynamic evolution of continental cratonic roots. Cratonic roots form strong, buoyant rafts upon which Australia's oldest crust and mineral deposits survived. Cratons preserve a record of planetary-scale chemical shifts, including the rise of surface oxygen, but it is unclear how these redox shifts themselves affected lithospheric processes. This project integrates new developments in geochemistry, geophysics, and geodynamics, to map the geochemical state and structure of cratonic roots, aiding mineral exploration, and also shedding light on the processes that modify, mineralise, and sometimes destroy cratonic roots.Read moreRead less
Seeing the unseeable: A new generation of geophysical imaging. This project aims to develop novel mathematical frameworks for probabilistic geophysical imaging and inference, building on recent advances in statistics and machine learning. These will allow us to obtain a more detailed and robust understanding of structures and processes occurring within the Earth, including those relevant to the Australian minerals and/or energy industries. Outcomes of this research include mathematical and compu ....Seeing the unseeable: A new generation of geophysical imaging. This project aims to develop novel mathematical frameworks for probabilistic geophysical imaging and inference, building on recent advances in statistics and machine learning. These will allow us to obtain a more detailed and robust understanding of structures and processes occurring within the Earth, including those relevant to the Australian minerals and/or energy industries. Outcomes of this research include mathematical and computational tools for imaging the subsurface, and greater understanding of Australian and global geoscience. This work can permit more effective exploitation of earth resources, as well as improving our understanding of how the Earth system has developed over geological history. Read moreRead less
Unveiling the fine structure of the Australian continent using ocean waves. This project aims to develop new methods to better image lithospheric and upper-mantle structures by using noise from ubiquitous ocean waves, and then use these methods to illuminate fine-scale lithospheric-asthenospheric structures in Australia, from the surface to the upper mantle. Imaging the Earth’s structure using seismic tomography is one of the most fundamental tasks of geoscience. Conventional earthquake-based se ....Unveiling the fine structure of the Australian continent using ocean waves. This project aims to develop new methods to better image lithospheric and upper-mantle structures by using noise from ubiquitous ocean waves, and then use these methods to illuminate fine-scale lithospheric-asthenospheric structures in Australia, from the surface to the upper mantle. Imaging the Earth’s structure using seismic tomography is one of the most fundamental tasks of geoscience. Conventional earthquake-based seismic tomography has difficulties in deciphering fine-scale lithospheric structures. The images from this project will provide a better understanding of the nature of intraplate earthquakes and volcanoes, and improve the assessment of intraplate seismic and volcanic hazards in Australia.Read moreRead less
Measuring mantle hydrogen to map ore fluids and model plate tectonics. The goal of this project is to use magnetotellurics to measure mantle hydrogen content to aid in the discovery of new mineral deposits. Hydrogen controls the strength of Earth’s mantle and is a vital component of the systems that form giant ore deposits. However, mantle hydrogen content is unconstrained. Ore-forming fluids hydrate the mantle pathways on which they travel. The first aim of this project is to image these fluid ....Measuring mantle hydrogen to map ore fluids and model plate tectonics. The goal of this project is to use magnetotellurics to measure mantle hydrogen content to aid in the discovery of new mineral deposits. Hydrogen controls the strength of Earth’s mantle and is a vital component of the systems that form giant ore deposits. However, mantle hydrogen content is unconstrained. Ore-forming fluids hydrate the mantle pathways on which they travel. The first aim of this project is to image these fluid pathways to improve mineral exploration techniques. Plate tectonic models assume that the lithospheric mantle is dehydrated but existing data from magnetotellurics and mantle rocks show high hydrogen contents. The second aim of this project is to create a map of the hydrogen content of the plates, which may lead to new models for continental evolution and mantle dynamics.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100329
Funder
Australian Research Council
Funding Amount
$360,000.00
Summary
Linking seismic structure to geodynamic processes beneath Australasia. This project aims to understand the relationship of mantle discontinuities beneath the Australian tectonic plate to mantle convection processes. Subducting slabs stagnate at different depths in the mantle, but the reason is not known. The Australian plate has complex boundaries which exhibit a range of subduction behaviours, making it an ideal location to study convection mechanisms. The project will use specialised seismic s ....Linking seismic structure to geodynamic processes beneath Australasia. This project aims to understand the relationship of mantle discontinuities beneath the Australian tectonic plate to mantle convection processes. Subducting slabs stagnate at different depths in the mantle, but the reason is not known. The Australian plate has complex boundaries which exhibit a range of subduction behaviours, making it an ideal location to study convection mechanisms. The project will use specialised seismic stations for detailed studies beneath New Zealand and Indonesia. The goal is to determine the relationship between seismic observations and geodynamical processes beneath Australasia, and understand how deeper mechanisms influence seismic activity and earthquake hazard at Earth's surface. Such detailed observations will help us to understand processes at the Earth's surface, with implications for earthquake hazard.Read moreRead less
Lighting Up Dark Fibre for Seismic Imaging. Distributed acoustic sensing (DAS) is a newly emerging passive seismic technique that converts telecommunication fibre-optic cables (dark fibres) into thousands of individual ground motion sensors. This project aims to harness DAS and the big data arising from it to develop unprecedented high-resolution images of the Earth’s structure, detect micro-seismicity, and thereby relate geological observations to Earth processes. Outcomes of this powerful tech ....Lighting Up Dark Fibre for Seismic Imaging. Distributed acoustic sensing (DAS) is a newly emerging passive seismic technique that converts telecommunication fibre-optic cables (dark fibres) into thousands of individual ground motion sensors. This project aims to harness DAS and the big data arising from it to develop unprecedented high-resolution images of the Earth’s structure, detect micro-seismicity, and thereby relate geological observations to Earth processes. Outcomes of this powerful technique include fine-scale seismic imaging of the Earth’s subsurface as the best proxy for geological processes and geochemistry. Benefits include transforming exploration of mineral resources, water, changes in subsurface structure, as well as geohazard assessments for Australia and worldwideRead moreRead less
Measuring the seismic pulse of the Earth using fibre optics . Distributed acoustic sensing (DAS) is a newly emerging passive seismic technique that converts telecommunication fibre-optic cables (dark fibres) into thousands of individual ground motion sensors. This project aims to harness DAS and the big data arising from it to develop unprecedented high-resolution images of the Earth’s structure, detect micro-seismicity, and thereby relate geological observations to Earth processes. Outcomes of ....Measuring the seismic pulse of the Earth using fibre optics . Distributed acoustic sensing (DAS) is a newly emerging passive seismic technique that converts telecommunication fibre-optic cables (dark fibres) into thousands of individual ground motion sensors. This project aims to harness DAS and the big data arising from it to develop unprecedented high-resolution images of the Earth’s structure, detect micro-seismicity, and thereby relate geological observations to Earth processes. Outcomes of this powerful technique include fine-scale seismic imaging of the Earth’s subsurface as the best proxy for geological processes and geochemistry. Benefits include transforming exploration of mineral resources, water, changes in subsurface structure, as well as geohazard assessments for Australia and worldwide.Read moreRead less
The global consequences of subduction zone congestion. This project will use a combination of 3D geodynamic modelling, plate kinematic reconstruction and geological and geophysical synthesis to determine how congested subduction zones influence plate kinematics, subduction dynamics and tectonic evolution at orogen and global scales. The project aims to deliver a transformation change in understanding the links between congested subduction, mantle flow, trench migration, crustal growth, transitio ....The global consequences of subduction zone congestion. This project will use a combination of 3D geodynamic modelling, plate kinematic reconstruction and geological and geophysical synthesis to determine how congested subduction zones influence plate kinematics, subduction dynamics and tectonic evolution at orogen and global scales. The project aims to deliver a transformation change in understanding the links between congested subduction, mantle flow, trench migration, crustal growth, transitions between stable convergent margin configurations and deformation in the overriding plates of subduction zones. Determining these relationships is significant because it will provide dynamic context to interpret the geological record of ancient convergent margins, which host a large percentage of Earth's metal resources.Read moreRead less
Detecting change in the outlet glaciers of East Antarctica using seismology. This work aims to establish a way of detecting change in the great outlet glaciers of East Antarctica by analysing the small vibrations made by moving water or by cracking and sliding ice. Change in these glaciers is very significant because they hold back over 10 m of potential future sea level rise, but many melt and movement processes are hidden from satellite view. Expected outcomes include a semi-automated approa ....Detecting change in the outlet glaciers of East Antarctica using seismology. This work aims to establish a way of detecting change in the great outlet glaciers of East Antarctica by analysing the small vibrations made by moving water or by cracking and sliding ice. Change in these glaciers is very significant because they hold back over 10 m of potential future sea level rise, but many melt and movement processes are hidden from satellite view. Expected outcomes include a semi-automated approach for remote area glacier monitoring using seismic signals, and recommendations for cost-effective future instrument deployments in key areas of East Antarctica. The new capability will be world-leading and pragmatic, enabling the risks of accelerated future coastal inundation affecting Australia to be better anticipated.Read moreRead less