Pressure waves on the mechanics of earthquakes and faulting. This project aims to decipher the physics of faulting and earthquakes from damage zones around seismogenic faults. It will examine a mechanism for instability in solids: volumetric collapse due to a dissipative pressure wave. This pressure wave may control damage-zone geometry and relate to earthquake stress and rock material properties. The project will research the instability through theoretical, laboratory and field studies. Antici ....Pressure waves on the mechanics of earthquakes and faulting. This project aims to decipher the physics of faulting and earthquakes from damage zones around seismogenic faults. It will examine a mechanism for instability in solids: volumetric collapse due to a dissipative pressure wave. This pressure wave may control damage-zone geometry and relate to earthquake stress and rock material properties. The project will research the instability through theoretical, laboratory and field studies. Anticipated outcomes include advances in earthquake and fault prediction, tools to determine the stress state and material properties of Earth’s crust, and knowledge of a class of solid instabilities.Read moreRead less
Fleshing out the fossil record: using organically preserved soft tissues and bone to explore the evolution of unique vertebrate characters. This study integrates developmental, molecular and morphological data in both fossil and living species to provide insights into the evolutionary mechanisms which formed the musculo/skeletal system. Uncovering these evolutionary pathways has the potential to describe mechanisms common to all vertebrate and informs us about our own evolution.
Dating the Aboriginal rock art of the Kimberley region, Western Australia - landscape geochemistry, surface processes and complementary dating techniques. The age of much of the spectacular rock art of the Kimberley region of Western Australia remains unknown, especially in its earliest stages. This project aims to use the most advanced dating techniques now available to determine a sequence of ages for this ancient cultural record, increasing its recognition as a heritage site of international ....Dating the Aboriginal rock art of the Kimberley region, Western Australia - landscape geochemistry, surface processes and complementary dating techniques. The age of much of the spectacular rock art of the Kimberley region of Western Australia remains unknown, especially in its earliest stages. This project aims to use the most advanced dating techniques now available to determine a sequence of ages for this ancient cultural record, increasing its recognition as a heritage site of international significance.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE190101307
Funder
Australian Research Council
Funding Amount
$421,824.00
Summary
A new nano-geochronology approach to global Earth processes. This project aims to develop a new nano-geochronology tool. Geochronology is the science of determining the ages of rocks and geological events, and is key to answering fundamental questions of planetary evolution, the geological processes that shaped our Earth, and evolution of life and past climates. Many valuable mineral phases are too small to be dated by conventional methods. The potential that nano-geochronology has to unlock inf ....A new nano-geochronology approach to global Earth processes. This project aims to develop a new nano-geochronology tool. Geochronology is the science of determining the ages of rocks and geological events, and is key to answering fundamental questions of planetary evolution, the geological processes that shaped our Earth, and evolution of life and past climates. Many valuable mineral phases are too small to be dated by conventional methods. The potential that nano-geochronology has to unlock information otherwise untraceable remains largely unexplored. The development and application of nano-geochronology will improve our understanding of the Australian crust and the field of geological mapping, which largely supports mineral exploration.Read moreRead less
Finite Strain with large rotations: A new hybrid numerical/experimental approach. Deformation up to large strains and rotations is important in rocks, metals, polymers, and biomaterials. Computational mechanics is a standard tool for modelling such deformations. However, in earth sciences, mechanical theories use small-strain formulations or large-strain approaches with classical stress rates. Classical stress rates can lead to incorrect stored energies. This project proposes to test a new large ....Finite Strain with large rotations: A new hybrid numerical/experimental approach. Deformation up to large strains and rotations is important in rocks, metals, polymers, and biomaterials. Computational mechanics is a standard tool for modelling such deformations. However, in earth sciences, mechanical theories use small-strain formulations or large-strain approaches with classical stress rates. Classical stress rates can lead to incorrect stored energies. This project proposes to test a new large-strain theory tailored to rocks experimentally, and to apply it to a pivotal geological problem: shear zone formation. The project will advance our fundamental understanding of the mechanics and energetics of rock deformation and provide a novel tool for the modelling of large deformations.Read moreRead less
Lifting the veil on the Geological Dark Ages: The search for Hadean Crust on Earth. The project involves detailed field and isotopic study of some of the oldest known rocks and minerals to develop the first comprehensive picture of the earliest growth of the Australian continent. The data will reveal the timing and processes of continent formation and shed new light on the enigmatic early period of the Earth's evolution.
Building Central Asia: Linking the Growth of Asia to its Exhumation. The consumption of the Tethys Ocean and the associated collision of Gondwana-derived terranes with Eurasia resulted in the uplift of the highest mountain belt on Earth: the Himalayas. However, stresses from this collision zone propagated far into the Eurasian interior by reactivating faults and creating mountain belts along these fault zones. This project aims to map and model how and when fault (re)activation occurred by integ ....Building Central Asia: Linking the Growth of Asia to its Exhumation. The consumption of the Tethys Ocean and the associated collision of Gondwana-derived terranes with Eurasia resulted in the uplift of the highest mountain belt on Earth: the Himalayas. However, stresses from this collision zone propagated far into the Eurasian interior by reactivating faults and creating mountain belts along these fault zones. This project aims to map and model how and when fault (re)activation occurred by integrating multi-method thermochronological and structural data on major Meso-Cenozoic Central Asian fault systems. The resulting time-integrated tectonic model will aid in the understanding of the India-Eurasia collision, the building of the mountainous Central Asian landscape and its influence on the Asian climate.Read moreRead less
Migmatites, charnockites and crustal fluid flux during orogenesis. Migration of volatile fluid and molten rock controls many Earth processes including rock deformation and the formation of mineral and energy deposits. Deep crustal fluids are hard to study directly, and their characteristics are usually inferred from lower crustal rock brought to the surface by erosion. For over 30 years one such rock called charnockite has been used to argue that lower crust is dehydrated by influx of carbon dio ....Migmatites, charnockites and crustal fluid flux during orogenesis. Migration of volatile fluid and molten rock controls many Earth processes including rock deformation and the formation of mineral and energy deposits. Deep crustal fluids are hard to study directly, and their characteristics are usually inferred from lower crustal rock brought to the surface by erosion. For over 30 years one such rock called charnockite has been used to argue that lower crust is dehydrated by influx of carbon dioxide-rich fluid, while other evidence supports dehydration by water extraction in silicate melt. This project aims to use the shape, distribution and chemistry of mineral grains to trace the passage of volatiles and melt through charnockite, constrain the nature of lower crustal fluids and resolve a long-standing controversy.Read moreRead less
Decoding the chronology of Mars. This project aims to determine a detailed and accurate geologic timescale for Mars, using image processing, high performance computing, geochemistry and geochronology. Mars is the nearest possibly habitable planet to our own. The project will apply automated feature recognition techniques to high resolution space-craft derived images of the surface of Mars and study formation ages of Martian meteorites. The goal is an absolute chronology for Mars. This contribute ....Decoding the chronology of Mars. This project aims to determine a detailed and accurate geologic timescale for Mars, using image processing, high performance computing, geochemistry and geochronology. Mars is the nearest possibly habitable planet to our own. The project will apply automated feature recognition techniques to high resolution space-craft derived images of the surface of Mars and study formation ages of Martian meteorites. The goal is an absolute chronology for Mars. This contributes to a better understanding of the geologic and habitability history of Mars, facilitating both future mission landing site selection and providing context for comparison to the early history of Earth.Read moreRead less
Australian Laureate Fellowships - Grant ID: FL110100074
Funder
Australian Research Council
Funding Amount
$2,627,006.00
Summary
Meteorite fireballs - illuminating the origins of the solar system. Meteorites are ancient rocks, containing a record of what conditions were like when the solar system was young; but to understand that record we need to know where they come from. This project will deliver these data, providing us with a template to understand how our planetary system came into being.