Murray Basin: A unique archive of late Neogene global change. Salinization, soil erosion, groundwater depletion and surface water degradation are but a few of the inter-related environmental problems facing the Murray-Darling Basin. These problems require an understanding of the way in which shallow groundwater, salts and surface water interact with near-surface sediments. This project is aimed at a better understanding the nature of those near-surface sediments in the Murray Basin and how th ....Murray Basin: A unique archive of late Neogene global change. Salinization, soil erosion, groundwater depletion and surface water degradation are but a few of the inter-related environmental problems facing the Murray-Darling Basin. These problems require an understanding of the way in which shallow groundwater, salts and surface water interact with near-surface sediments. This project is aimed at a better understanding the nature of those near-surface sediments in the Murray Basin and how they were formed. If we can understand how the basin came to be the way it is (in the modern setting), we may better understand the way it might behave when subject to man-made changes like increased groundwater usage, etc.Read moreRead less
Oxygenation of the oceans and the origin of animals. This research project will investigate newly discovered ancient reefs and fossils from the Flinders Ranges that may represent the oldest known animals on Earth. Results from the project will help understand the early evolution of animal life on Earth and will contribute to a greater appreciation of Australia's geological heritage.
The use of outcrop analogues to characterise large-scale deepwater sedimentary architecture. Deepwater turbidite sedimentary systems are one of the modern frontiers in petroleum exploration, with many major discoveries expected from around the world in the next 25 years. Technological advances in the drilling and production of the deepwater hydrocarbons now enable the exploration and exploitation in this realm. However, the geometry, internal architecture and spatial variations of deepwater sand ....The use of outcrop analogues to characterise large-scale deepwater sedimentary architecture. Deepwater turbidite sedimentary systems are one of the modern frontiers in petroleum exploration, with many major discoveries expected from around the world in the next 25 years. Technological advances in the drilling and production of the deepwater hydrocarbons now enable the exploration and exploitation in this realm. However, the geometry, internal architecture and spatial variations of deepwater sandbodies are still poorly understood. By using state-of-the-art outcrop, modern submarine fan and petroleum exploration data, this research project will improve the understanding of the reservoir geometry and internal architecture of deepwater sandbodies. The results will aid in the exploration and development of hydrocarbons in deepwater sedimentary systems.Read moreRead less
A one million year record of relative sea-level, climatic and environmental changes - Aeolianites of the southern Australian continental margin. This project will (1) further refine two dating methods that will revolutionize Australia's capacity to date geological and archaeological events; (2) ensure that Australia remains in the forefront in applied geochronology and that a sufficient level of technical expertise remains within the country; (3) examine the sensitivity of coastal environments t ....A one million year record of relative sea-level, climatic and environmental changes - Aeolianites of the southern Australian continental margin. This project will (1) further refine two dating methods that will revolutionize Australia's capacity to date geological and archaeological events; (2) ensure that Australia remains in the forefront in applied geochronology and that a sufficient level of technical expertise remains within the country; (3) examine the sensitivity of coastal environments to rapid climate and sea-level changes; (4) increase public awareness of the scientific basis for the unique nature of Australia's coastal landscapes; and (5) may also assist in the exploration of strategically important minerals. Read moreRead less
Longshore Sediment Supply to the Deep Ocean. The current model to supply sand to deep water off continental margins is that provided by rivers operating at low sea level. We propose an alternative model in which sand is provided by longshore transport to deep water at high sea level north of Fraser Island, SE Queensland. Here we will test the validity of our new model by site studies of sea bottom morphology, composition and dynamics. If the model proves true, we will have: 1) generated an entir ....Longshore Sediment Supply to the Deep Ocean. The current model to supply sand to deep water off continental margins is that provided by rivers operating at low sea level. We propose an alternative model in which sand is provided by longshore transport to deep water at high sea level north of Fraser Island, SE Queensland. Here we will test the validity of our new model by site studies of sea bottom morphology, composition and dynamics. If the model proves true, we will have: 1) generated an entirely new exploration model for deepwater hydrocarbons, 2) provided new expertise and seabed maps for generating a superior marine naval defence capability.Read moreRead less
Reconstruction of marine ecosystems following the greatest mass extinction during the Phanerozoic history of Earth life: Lessons for the present. Frequent defaunation events strongly threaten sustainable development of marine resources and human environments especially in countries that are surrounded by oceans such as Australia. By analysing recovery mechanisms of marine ecosystems following the Permian-Triassic mass extinction, the greatest crisis of Earth life, we will develop predictive tool ....Reconstruction of marine ecosystems following the greatest mass extinction during the Phanerozoic history of Earth life: Lessons for the present. Frequent defaunation events strongly threaten sustainable development of marine resources and human environments especially in countries that are surrounded by oceans such as Australia. By analysing recovery mechanisms of marine ecosystems following the Permian-Triassic mass extinction, the greatest crisis of Earth life, we will develop predictive tools for analysing restoration of modern marine defaunated ecosystems. Understanding biotic extinction and recovery is crucial to understanding the evolution of the Earth's biosphere. This study increases Australia's research profile on this global issue. The target strata are quality oil source rocks in Perth Basin, and thus this project is beneficial to the Australian petroleum industry.Read moreRead less
The stratigraphic architecture of continental margins (MARGINS). The project seeks to increase our understanding of how continental margins develop. Emphasis is given to studying the controls exerted on sedimentation by sea-level change, climate cycling, ocean front location, current-deposition and tectonics, using the southwest Pacific (temperate eastern NZ) as the prime fieldwork area. Sediment being transported across continental margins passes through a number of energy fences (e.g. piedmont ....The stratigraphic architecture of continental margins (MARGINS). The project seeks to increase our understanding of how continental margins develop. Emphasis is given to studying the controls exerted on sedimentation by sea-level change, climate cycling, ocean front location, current-deposition and tectonics, using the southwest Pacific (temperate eastern NZ) as the prime fieldwork area. Sediment being transported across continental margins passes through a number of energy fences (e.g. piedmont, shoreline, wave-base, storm-zone, shelf-edge), which together modulate sediment transport and deposition. These fences differ in their relative positions, magnitudes and effects on different margins. The research will combine onland and offshore studies, builds on data collected during ODP Leg 181, and is integrated with the international MARGINS "source to sink" program.Read moreRead less
Extinction and survival: biotic responses to environmental change in Late Devonian oceans during a greenhouse-icehouse transition. This project represents an important opportunity to answer fundamental questions about the role of environmental changes in major mass extinction events in the geological past and to provide insight into the survival of modern marine species in response to climate change (National Research Priority 1). It will enhance Australia's global research profile in biostratig ....Extinction and survival: biotic responses to environmental change in Late Devonian oceans during a greenhouse-icehouse transition. This project represents an important opportunity to answer fundamental questions about the role of environmental changes in major mass extinction events in the geological past and to provide insight into the survival of modern marine species in response to climate change (National Research Priority 1). It will enhance Australia's global research profile in biostratigraphical and palaeontological research through contribution to the development of biozonations, correlation and global debate on extinction mechanisms. It will also strengthen international collaboration, and, importantly, provide crucial research training to young researchers in these fields.Read moreRead less
Oxygenation history of the Earth and the evolution of complex life. This project will investigate how and when the atmosphere became oxygen-rich by analyzing ancient barrier reefs and other rocks that formed between 1000 to 300 million years ago, spanning the appearance and diversification of animals and plants. The project is significant because the buildup of oxygen in the atmosphere was arguably the most important chemical process ever to have occurred on Earth and controlled the evolution of ....Oxygenation history of the Earth and the evolution of complex life. This project will investigate how and when the atmosphere became oxygen-rich by analyzing ancient barrier reefs and other rocks that formed between 1000 to 300 million years ago, spanning the appearance and diversification of animals and plants. The project is significant because the buildup of oxygen in the atmosphere was arguably the most important chemical process ever to have occurred on Earth and controlled the evolution of environments, climate and life. A major outcome will be an improved understanding of how the Earth's atmosphere and climate are regulated by geological processes. This project will generate new knowledge about how sedimentary zinc, lead and copper ore deposits form, which may guide exploration for these commodities.Read moreRead less