Planetary Pulsations: Exploring Links between Superplumes, Supercontinents, and Superchrons with 3-D Spherical Mantle Convection Models. This project advances the tools and knowledge base regarding historic motions of tectonic plates (including the Australian continent). This furthers understanding of the current and past state of stress in the Earth's surface, ultimately improving ways of characterizing earthquake hazard and mineral exploration. This project also benefits researchers interpre ....Planetary Pulsations: Exploring Links between Superplumes, Supercontinents, and Superchrons with 3-D Spherical Mantle Convection Models. This project advances the tools and knowledge base regarding historic motions of tectonic plates (including the Australian continent). This furthers understanding of the current and past state of stress in the Earth's surface, ultimately improving ways of characterizing earthquake hazard and mineral exploration. This project also benefits researchers interpreting the climate record as two processes which effected the ancient climate are investigated: major outbursts of greenhouse gases during periods of major volcanism and the reorientation of the planet with respect to its spin axis. The results are obtained with these computer simulations highlight Australia's emerging strength in supercomputing on the international scene.
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Large-scale three dimensional deformation of the lithosphere by subduction and mantle flow. We will be modelling of the dynamics of the Earth's crust and shallow lithosphere in response to the huge stresses created by plate motions. For Australia these stresses are transmitted from the distant plate boundaries, but they have a direct controlling influence on the evolution of the petroleum rich basins of Australia. These basins have reached maturity; further exploration will be in deep water wher ....Large-scale three dimensional deformation of the lithosphere by subduction and mantle flow. We will be modelling of the dynamics of the Earth's crust and shallow lithosphere in response to the huge stresses created by plate motions. For Australia these stresses are transmitted from the distant plate boundaries, but they have a direct controlling influence on the evolution of the petroleum rich basins of Australia. These basins have reached maturity; further exploration will be in deep water where geophysical prospecting methods are unreliable. Model-driven "exploration geodynamics" methods such as those we are developing will be needed to support traditional exploration techniques in these areas.Read moreRead less
Micromechanical modelling of fault gouge dynamics: towards an improved fault constitutive relation. The human and economic costs of geological and other particulate media related problems in Australia are staggering. These include geological hazards (e.g. landslides and earthquakes; the Newcastle earthquake cost around $4 billion and 13 lives), to particulate processes prevalent in Australia's major export industries (e.g. coal export valued at $9.3 billion, iron ore at $3.8 billion, and wheat ....Micromechanical modelling of fault gouge dynamics: towards an improved fault constitutive relation. The human and economic costs of geological and other particulate media related problems in Australia are staggering. These include geological hazards (e.g. landslides and earthquakes; the Newcastle earthquake cost around $4 billion and 13 lives), to particulate processes prevalent in Australia's major export industries (e.g. coal export valued at $9.3 billion, iron ore at $3.8 billion, and wheat at $3.4 billion), to Australia's 810,000 km granular paved road network that costs around $5.5 million per day to maintain. The program will deliver new knowledge and advanced analytical and predictive modelling tools capable of fuelling breakthroughs in earthquake forecasting research and industrial innovations.
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Simulating the evolution of the Southern Ocean and Australia's Palaeo-environment over 40 million years. Our project falls in the first national research priority: an environmentally sustainable Australia and meets two of its primary goals, understanding environmental change and the evolution of biodiversity, and responding to climate change and variability. Our models will represent a major step forward in differentiating between natural processes and anthropological input to present global cli ....Simulating the evolution of the Southern Ocean and Australia's Palaeo-environment over 40 million years. Our project falls in the first national research priority: an environmentally sustainable Australia and meets two of its primary goals, understanding environmental change and the evolution of biodiversity, and responding to climate change and variability. Our models will represent a major step forward in differentiating between natural processes and anthropological input to present global climate change and will address quantitatively how Australia changed from a continent rich in freshwater to the driest inhabited continent throughout the last 40 million years.Read moreRead less
The Initiation and 3D Evolution of Instabilities in the Deep Continental Lithosphere. This project is part of a new international initiative in the Geodynamics of the Australian Plate bringing together studies of the active tectonics of the boundary regions of our plate and the ancient analogues of these processes which are locked into the stable interior of the Australian continent. The proposed research is a good fit to the Identification and Extraction of Deep Earth Resources priority goal. D ....The Initiation and 3D Evolution of Instabilities in the Deep Continental Lithosphere. This project is part of a new international initiative in the Geodynamics of the Australian Plate bringing together studies of the active tectonics of the boundary regions of our plate and the ancient analogues of these processes which are locked into the stable interior of the Australian continent. The proposed research is a good fit to the Identification and Extraction of Deep Earth Resources priority goal. Detachment of the lithosphere is associated with fertile mantle being emplaced at shallow depth below the crust; an important precursory event for mineralization. The project builds upon AuScope (NCRIS 5.13) to create infrastructure for a new, smart resource exploration and extraction industry based on modelling and simulation.Read moreRead less
Computer simulation to study emergence of material texture in the Earth and Plate Tectonics. Plate tectonics has played a crucial role in the evolution and dynamics of the earth impacting on the diversity of life, mineralisation, and crustal dynamics. Despite its significance, how and under what conditions material texture and plate tectonics emerge from a proto-planet is not well understood. New computational methodologies to simulate the evolution of the plate-mantle system will be used to stu ....Computer simulation to study emergence of material texture in the Earth and Plate Tectonics. Plate tectonics has played a crucial role in the evolution and dynamics of the earth impacting on the diversity of life, mineralisation, and crustal dynamics. Despite its significance, how and under what conditions material texture and plate tectonics emerge from a proto-planet is not well understood. New computational methodologies to simulate the evolution of the plate-mantle system will be used to study how the upper mantle emerges as a thermo-mechanically distinct boundary layer, how this emergent structure relates to anisotropy in the upper mantle, and how it is affected by cross-scale effects controlling fault zone behaviour and crustal dynamics.Read moreRead less