Three dimensional geospatial model of the Australian continent from geologically constrained inverse modelling of the Earth's gravity and magnetic fields. This project enhances Australia's reputation in integration of geology and geophysics and will create a three dimensional model of the Australian crust that will image and define the geometry of the fundamental building blocks of the continent. The outcomes will create new concepts for resource exploration and hazard recognition.
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
How the Earth moves: Developing a novel seismological approach to map the small-scale dynamics of the upper mantle. The concept of small-scale convection currents from about 100-400 km below the Earth’s surface is a model proposed to explain the origins of intraplate volcanoes and mountains. However, direct evidence for the physical reality of small-scale convection cells is generally weak. This project will develop a novel seismological approach combining both ambient noise and earthquake data ....How the Earth moves: Developing a novel seismological approach to map the small-scale dynamics of the upper mantle. The concept of small-scale convection currents from about 100-400 km below the Earth’s surface is a model proposed to explain the origins of intraplate volcanoes and mountains. However, direct evidence for the physical reality of small-scale convection cells is generally weak. This project will develop a novel seismological approach combining both ambient noise and earthquake data that can image such small-scale upper mantle convection. The outcomes of this project will help to fill the gap left in the Plate Tectonic paradigm by its inability to explain intraplate geological activity (volcanoes, earthquakes, mountains), which would be a significant step towards unifying conceptual models about how the Earth works.Read moreRead less
Craton modification and growth: the east Albany-Fraser Orogen in three-dimensions. The objective of this work is to achieve new, synergistic techniques for delineating the three-dimensional structure of the east Albany-Fraser Orogen in Western Australia, and the lithospheric structure below it. These methods will guide understanding of the potential for mineral resources in this region with little surface geological exposure.
Unlocking Earth’s inner secrets in deep time using palaeointensities. The geomagnetic field, generated in Earth's liquid outer core, provides Earth's biosphere and atmosphere with a critical protective shield from the bombardment of the solar wind. However, we still know little about the evolution of the geomagnetic field or the deep-time secrets it keeps. This project aims to study the varying intensity of the geomagnetic field during Earth’s middle life. The results will help decipher how the ....Unlocking Earth’s inner secrets in deep time using palaeointensities. The geomagnetic field, generated in Earth's liquid outer core, provides Earth's biosphere and atmosphere with a critical protective shield from the bombardment of the solar wind. However, we still know little about the evolution of the geomagnetic field or the deep-time secrets it keeps. This project aims to study the varying intensity of the geomagnetic field during Earth’s middle life. The results will help decipher how the Earth’s core responded to evolving tectonic and dynamic systems, including the supercontinent cycles, and when Earth’s solid inner core initiated. Such knowledge will help us to better understand how the Earth System evolved as a whole, and how such an evolution has led to the present day life and environment on Earth.Read moreRead less
Australian Laureate Fellowships - Grant ID: FL150100133
Funder
Australian Research Council
Funding Amount
$2,917,436.00
Summary
How the Earth works - toward building a new tectonic paradigm. How the Earth works - toward building a new tectonic paradigm: This fellowship project aims to build on the latest technological and conceptual advances to establish the patterns of Earth evolution, and use this information to examine a ground-breaking geodynamic hypothesis which links cyclic plate aggregation and dispersion to deep Earth processes. Half a century after the inception of plate tectonics theory, we are still unsure how ....How the Earth works - toward building a new tectonic paradigm. How the Earth works - toward building a new tectonic paradigm: This fellowship project aims to build on the latest technological and conceptual advances to establish the patterns of Earth evolution, and use this information to examine a ground-breaking geodynamic hypothesis which links cyclic plate aggregation and dispersion to deep Earth processes. Half a century after the inception of plate tectonics theory, we are still unsure how the Earth 'engine' works, particularly the forces that drive plate tectonics. The project involves extensive national and international collaboration to potentially create a paradigm shift in our understanding of global tectonics, and hopes to contribute to an understanding of the formation and distribution of Earth resources to provide a conceptual framework for their exploration.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150100326
Funder
Australian Research Council
Funding Amount
$338,266.00
Summary
The role of subduction initiation in the evolution of Earth’s oceans. An outstanding question in plate tectonics is how do oceans start to close? The Wilson Cycle describes the life of an ocean in three phases: opening and spreading, foundering of its passive margins and development of new subduction zones, and consumption and closure. It has been suggested that new subduction zones are difficult to form and thereby they are more likely to spread from ocean to ocean like a sort of invasive mecha ....The role of subduction initiation in the evolution of Earth’s oceans. An outstanding question in plate tectonics is how do oceans start to close? The Wilson Cycle describes the life of an ocean in three phases: opening and spreading, foundering of its passive margins and development of new subduction zones, and consumption and closure. It has been suggested that new subduction zones are difficult to form and thereby they are more likely to spread from ocean to ocean like a sort of invasive mechanism. This project aims to make use of laboratory models and plate kinematic modelling to understand how subduction zones are initiating and propagating in the Atlantic. The project aims to provide clues on how ancient oceans may have closed and whether the Atlantic is already in its turning point.Read moreRead less
Intraplate volcanism near lateral slab edges: result of deep mantle plumes or slab rollback-induced mantle flow? This project investigates how the Earth's interior (the mantle) flows near edges of tectonic plates as these plates sink into the mantle. This is important because these flows have been crucial in shaping the Southwest Pacific region bordering Australia and might be responsible for the formation of some of the largest volcanoes on Earth.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE150100065
Funder
Australian Research Council
Funding Amount
$560,000.00
Summary
A fully automated, fully shielded palaeomagnetic system. A fully automated, fully shielded palaeomagnetic system: This project aims to establish the first fully automated and magnetically fully shielded superconducting palaeomagnetic data acquisition system in Australia. Palaeomagnetism is a key research field that has applications to a broad range of pure and applied geoscience disciplines. Australia has been a world leader in this field, including the application of palaeomagnetism to both glo ....A fully automated, fully shielded palaeomagnetic system. A fully automated, fully shielded palaeomagnetic system: This project aims to establish the first fully automated and magnetically fully shielded superconducting palaeomagnetic data acquisition system in Australia. Palaeomagnetism is a key research field that has applications to a broad range of pure and applied geoscience disciplines. Australia has been a world leader in this field, including the application of palaeomagnetism to both global and regional tectonic studies. Palaeomagnetic studies demand a labour-intensive process of treating and measuring a large number of samples. The system will significantly enhance the efficiency and accuracy of palaeomagnetic analysis, and thus enhance Australia's research capacity in this and related research fields.Read moreRead less
Down under down under: using multi-scale seismic tomography to image beneath Australia's Great Artesian Basin. Seismic arrays will be deployed in the Great Artesian Basin to image the crust and mantle using distant earthquake and ambient noise sources. This will answer fundamental questions about the tectonic evolution of eastern Australia and elucidate the structure of a region containing significant deep Earth resources.