Constraining the snowball earth: timing and duration of neoproterozoic glaciations using precise Re-Os geochronology. This project aims to investigate the onset and duration of major global glacial events during the period of Earth history when metazoan life first appeared. Understanding such processes will enable insights into both the rate and nature of evolutionary processes, and place constraints of ancient and modern climate models. This will be achieved by establishing a facility to obtain ....Constraining the snowball earth: timing and duration of neoproterozoic glaciations using precise Re-Os geochronology. This project aims to investigate the onset and duration of major global glacial events during the period of Earth history when metazoan life first appeared. Understanding such processes will enable insights into both the rate and nature of evolutionary processes, and place constraints of ancient and modern climate models. This will be achieved by establishing a facility to obtain precise Re-Os isotope age data from sediments at Adelaide University (only the second such in the world), and studying sedimentary rocks preserved in the Centralian Superbasin. A basis for global stratigraphic correlation will also result from the intended program of work.Read moreRead less
MILLENIAL-SCALE INSTABILITY OF SEA LEVEL AND THE CLIMATE SYSTEM: NEW ANALYSIS OF CORAL TERRACES IN PAPUA NEW GUINEA. Northern hemisphere climates switched repeatedly and abruptly between cold and warm states during the ice ages. This unexplained finding poses uncertainties about future climate. The exact chronology of past sea level and climatic changes is a key to the problem: this project aims to establish precise chronology through re-analysis of coral terraces at Huon Peninsula, PNG. New U-s ....MILLENIAL-SCALE INSTABILITY OF SEA LEVEL AND THE CLIMATE SYSTEM: NEW ANALYSIS OF CORAL TERRACES IN PAPUA NEW GUINEA. Northern hemisphere climates switched repeatedly and abruptly between cold and warm states during the ice ages. This unexplained finding poses uncertainties about future climate. The exact chronology of past sea level and climatic changes is a key to the problem: this project aims to establish precise chronology through re-analysis of coral terraces at Huon Peninsula, PNG. New U-series dating methods will give an accurately-timed record of sea level changes, which will be tightly locked to marine-sediment records of climatic change, by using sharp changes in atmospheric radiocarbon as universal marker horizons.Read moreRead less
Environmental Evolution of the Willandra Lakes World Heritage Area. The Willandra Lakes World Heritage Area ranks as the most significant area for documenting Australia TMs unique cultural and environmental history. Parts of this remarkable archive are being lost through erosion. This project is the basis for a strategic research alliance between the custodians and managers of the area and leading Australian research institutions to build a picture of the continent TMs human and environmental hi ....Environmental Evolution of the Willandra Lakes World Heritage Area. The Willandra Lakes World Heritage Area ranks as the most significant area for documenting Australia TMs unique cultural and environmental history. Parts of this remarkable archive are being lost through erosion. This project is the basis for a strategic research alliance between the custodians and managers of the area and leading Australian research institutions to build a picture of the continent TMs human and environmental history before this evidence is irretrievably lost. Lake Mungo is known to Australians as the site of the world TMs earliest cremation and a window into our remote past. We will provide novel insights into the evolution of the Australian landscape, its fragile environment and the history of its resilient inhabitants.Read moreRead less