Seismic wavespeeds and attenuation in upper-mantle rocks: a laboratory study of the effect of partial melting. The influence of partial melting on the seismic properties of the Earth's upper mantle will be explored through a laboratory study. Synthetic rock specimens consisting of the upper-mantle mineral olivine and a small proportion of basaltic magma will be prepared and their grain-scale melt distribution will be characterised. The seismic properties of these materials will be measured at ....Seismic wavespeeds and attenuation in upper-mantle rocks: a laboratory study of the effect of partial melting. The influence of partial melting on the seismic properties of the Earth's upper mantle will be explored through a laboratory study. Synthetic rock specimens consisting of the upper-mantle mineral olivine and a small proportion of basaltic magma will be prepared and their grain-scale melt distribution will be characterised. The seismic properties of these materials will be measured at high temperatures and seismic frequencies with novel locally developed equipment. Comparison with melt-free equivalents will allow the influence of the added magma to be quantified, allowing robust interpretation of seismological models of Earth structure with implications for its chemical and dynamical evolution.Read moreRead less
The Role of Hydrous Fluids in Fault Processes: An Experimental Study. The proposed project seeks to understand how hydrothermal reactions in fault zones affect various physical properties such as fault strength and permeability. The project will be conducted by performing high pressure experiments which simulate natural conditions. I will also develop new analytical techniques to characterize the microstructural evolution of faults, with a focus on understanding how any changes alter the hydrolo ....The Role of Hydrous Fluids in Fault Processes: An Experimental Study. The proposed project seeks to understand how hydrothermal reactions in fault zones affect various physical properties such as fault strength and permeability. The project will be conducted by performing high pressure experiments which simulate natural conditions. I will also develop new analytical techniques to characterize the microstructural evolution of faults, with a focus on understanding how any changes alter the hydrologic behaviour of the fault. This study will shed much needed information related to the mechanisms of earthquake nucleation, and to the formation mechanism of fault-hosted gold deposits.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775729
Funder
Australian Research Council
Funding Amount
$420,000.00
Summary
Improved understanding of nanoscale materials - structure, composition, crystallography and defects revealed by electron imaging and analysis at high spatial resolution. Modern materials scientists and engineers are driven by world-wide competition to develop new technology and manufactured devices. The trend has for some time been towards miniaturisation and one of the main challenges lies in effectively characterising nanostructures that are produced as a key step in research and development o ....Improved understanding of nanoscale materials - structure, composition, crystallography and defects revealed by electron imaging and analysis at high spatial resolution. Modern materials scientists and engineers are driven by world-wide competition to develop new technology and manufactured devices. The trend has for some time been towards miniaturisation and one of the main challenges lies in effectively characterising nanostructures that are produced as a key step in research and development of advanced materials. The proposed electron microscope and detectors will provide a state-of-the-art analytical facility to support the cross-disciplinary materials science and nanotechnology research at the Australian National University. It will also provide an important training facility for students and early-career researchers and will be available to investigators from other Australian institutions.Read moreRead less