Biomolecular chemical survival strategies of terrestrial extremophiles and the spectroscopic search for life on Mars. This project is aimed to place Australian research at the forefront of developments in the search for extraterrestrial life, the evolution of life on earth, and the design of new probes for the identification of microorganisms. The research will link key centres in Australia and the UK with international space agencies (NASA and the European Space Agency) in the search for cutti ....Biomolecular chemical survival strategies of terrestrial extremophiles and the spectroscopic search for life on Mars. This project is aimed to place Australian research at the forefront of developments in the search for extraterrestrial life, the evolution of life on earth, and the design of new probes for the identification of microorganisms. The research will link key centres in Australia and the UK with international space agencies (NASA and the European Space Agency) in the search for cutting edge techniques to be used in the search for extraterrestrial life forms and their links to paleo and extremophile life forms on Earth. Read moreRead less
Evolution of a two billion year subduction zone: Insights from the integration of microstructure and geochronology. The dynamic evolution of the earth is fundamentally linked to its thermal history. Since, the internal heat production of the earth has changed over time, plate tectonic processes may also have changed over earth history. The manner and timing of this change is highly controversial. We aim to address the nature of tectonic processes 2 billion years ago by studying one of the wor ....Evolution of a two billion year subduction zone: Insights from the integration of microstructure and geochronology. The dynamic evolution of the earth is fundamentally linked to its thermal history. Since, the internal heat production of the earth has changed over time, plate tectonic processes may also have changed over earth history. The manner and timing of this change is highly controversial. We aim to address the nature of tectonic processes 2 billion years ago by studying one of the world's oldest subduction zones (the Usagarian belt in Tanzania). The geometry, kinematics and deformation history of the subduction complex will be integrated with radiometric age dating to quantify the style and rates of ancient tectonic processes.Read moreRead less
Supercomputer Simulation of Multiscale Dynamic Behaviour in Multiphase Deformable Porous Media. This project will establish and consolidate links between leading groups in China and Australia to develop a new and unique multiscale computational model and algorithm for simulating multiphase nonlinear behaviours of the porous media under dynamic loading conditions, and improve technology transfer between the two groups by the mobility of the ARC International Fellow. This will aid Australian geosc ....Supercomputer Simulation of Multiscale Dynamic Behaviour in Multiphase Deformable Porous Media. This project will establish and consolidate links between leading groups in China and Australia to develop a new and unique multiscale computational model and algorithm for simulating multiphase nonlinear behaviours of the porous media under dynamic loading conditions, and improve technology transfer between the two groups by the mobility of the ARC International Fellow. This will aid Australian geoscience and mining industry, such as in HFR geothermal/UCG energy facility design, construction, risk assessment and production and could help Australia shift away from greenhouse gases and become a world leader in the emerging worldwide HFR geothermal/UCG industry.Read moreRead less
Gondwana in East Asia? A biogeographic test using Permian marine invertebrate biota. Combining Permian fossil collections from key Australian, NE Chinese, East Russian and Japanese localities, coupled with a detailed quantitative biogeographical analysis, this project will provide fundamental data for evaluating current plate tectonic models regarding the palaeo-positions of some of the tectonic blocks in East Asia. In particular, this project will test, using biogeographical data, the validity ....Gondwana in East Asia? A biogeographic test using Permian marine invertebrate biota. Combining Permian fossil collections from key Australian, NE Chinese, East Russian and Japanese localities, coupled with a detailed quantitative biogeographical analysis, this project will provide fundamental data for evaluating current plate tectonic models regarding the palaeo-positions of some of the tectonic blocks in East Asia. In particular, this project will test, using biogeographical data, the validity of several recently proposed claims that continental East Asia contains some tectonic blocks of Gondwana origin. An improved understanding of the Permian palaeogeographical relationship between Gondwanaland and East Asia is critical for improving geological models for resources exploration and the understanding of earth history.Read moreRead less
High-temperature Elastic Wave Speeds of Mantle Minerals and their Seismological Implications. Laboratory measurements of elastic wave speeds are critical for the interpretation of seismological models for the Earth's deep interior. During the past several years, research groups at ANU and Stony Brook University have separately been proving novel experimental techniques for measurement of the temperature dependence of elastic wave speeds. Now a timely collaboration is proposed in which we would ....High-temperature Elastic Wave Speeds of Mantle Minerals and their Seismological Implications. Laboratory measurements of elastic wave speeds are critical for the interpretation of seismological models for the Earth's deep interior. During the past several years, research groups at ANU and Stony Brook University have separately been proving novel experimental techniques for measurement of the temperature dependence of elastic wave speeds. Now a timely collaboration is proposed in which we would exploit access to similar temperature ranges under two very different pressure regimes to examine the mixed pressure-temperature dependence of wave speeds that is so critical for the inference of chemical composition, mineralogical make-up, and temperature variations within the Earth's mantle.Read moreRead less
How has continental lithosphere evolved? Processes of assembly, growth, transformation and destruction. Novel in-situ analytical and dating techniques will be used on samples from the Earth's mantle and deep crust to define the processes by which the continents and their roots (to depths of 250 km) have been formed, modified or destroyed at different times throughout Earth's 4.6 billion year evolution. The role of oceanic plateaus and mantle plumes in building protocontinents or modifying lithos ....How has continental lithosphere evolved? Processes of assembly, growth, transformation and destruction. Novel in-situ analytical and dating techniques will be used on samples from the Earth's mantle and deep crust to define the processes by which the continents and their roots (to depths of 250 km) have been formed, modified or destroyed at different times throughout Earth's 4.6 billion year evolution. The role of oceanic plateaus and mantle plumes in building protocontinents or modifying lithospheric volumes will be evaluated. The results will provide a more robust framework for interpreting the architecture of Earth's lithosphere and will have relevance to the formation and location of resources such as Ni, PGEs, Au and diamonds.Read moreRead less
Continental temperature and rainfall change during past global warming - a multiproxy approach involving clumped isotopes in speleothems. Global climate simulation and prediction models depend on accurate and quantitative measurements of key climatic parameters such as temperature and rainfall, and their temporal changes and spatial distributions. Our research will combine the revolutionary clumped isotope thermometry with other climatic proxies archived in stalagmites to quantify temperature an ....Continental temperature and rainfall change during past global warming - a multiproxy approach involving clumped isotopes in speleothems. Global climate simulation and prediction models depend on accurate and quantitative measurements of key climatic parameters such as temperature and rainfall, and their temporal changes and spatial distributions. Our research will combine the revolutionary clumped isotope thermometry with other climatic proxies archived in stalagmites to quantify temperature and rainfall changes in Australia and China during the past two major episodes of global warming (Terminations I and II). This pilot project directly addresses national research priority goals 'Water - a critical resource', 'Responding to climate change and variability', provide an excellent platform for cross-institutional research training and enhance scientific exchange with China.Read moreRead less
APEC Cooperation for Earthquake Simulation Visitors Program. This project aims to improve understanding of earthquakes through development of numerical simulation models for the earthquake generation process. Its centerpiece is a major international collaboration, achieved via a visitor exchange program between the headquarters of the APEC Cooperation for Earthquake Simulation in Australia and overseas centres of excellence. Earthquakes are one of the most costly and deadly natural disasters, a ....APEC Cooperation for Earthquake Simulation Visitors Program. This project aims to improve understanding of earthquakes through development of numerical simulation models for the earthquake generation process. Its centerpiece is a major international collaboration, achieved via a visitor exchange program between the headquarters of the APEC Cooperation for Earthquake Simulation in Australia and overseas centres of excellence. Earthquakes are one of the most costly and deadly natural disasters, and APEC member economies have a high earthquake risk. Recent analyses suggest earthquakes may dominate the loss potential in Australia. The complementary research programs offer an opportunity to achieve breakthrough advances in improved methods of earthquake forecasting and hazard quantification.Read moreRead less
Validation of Synthetic Regional Gravity Field Models. This research will further develop the theoretical and practical methods required to test any model of the Earth's gravity field. Previously, geodesists have had to rely on analytical error estimates, usually based on observed data. A synthetic Earth gravity model avoids this scenario by giving an exact validation technique of the methods used. The synthetic model will allow users of geoid models (e.g., for GPS heighting) to have much mor ....Validation of Synthetic Regional Gravity Field Models. This research will further develop the theoretical and practical methods required to test any model of the Earth's gravity field. Previously, geodesists have had to rely on analytical error estimates, usually based on observed data. A synthetic Earth gravity model avoids this scenario by giving an exact validation technique of the methods used. The synthetic model will allow users of geoid models (e.g., for GPS heighting) to have much more confidence in their results. When used with a precise geoid model, GPS is faster and cheaper than conventional spirit-levelling, offering around 800% productivity gains. Read moreRead less
Mid-Holocene coral reef bleaching and recovery in the South China Sea and its implications for the modern Great Barrier Reef. Strong evidence shows the mid-Holocene was 1-2 ºC warmer than the present, implying a greater probability for coral bleaching. We have collected well-preserved mid-Holocene reef corals from the northern South China Sea, which contain growth hiatuses reflecting bleaching and mortality. We propose to use high-resolution Sr/Ca, d18O and microstructure analysis and high-preci ....Mid-Holocene coral reef bleaching and recovery in the South China Sea and its implications for the modern Great Barrier Reef. Strong evidence shows the mid-Holocene was 1-2 ºC warmer than the present, implying a greater probability for coral bleaching. We have collected well-preserved mid-Holocene reef corals from the northern South China Sea, which contain growth hiatuses reflecting bleaching and mortality. We propose to use high-resolution Sr/Ca, d18O and microstructure analysis and high-precision U-series dating of coral growth bands to determine the season and sea-surface temperature when each growth hiatus occurred and to establish the timing and duration of the growth hiatus. Reconstructed mid-Holocene coral bleaching history has important implications for management of the Great Barrier Reef during predicted global warming.Read moreRead less