Palaeoecological, geomorphological and sedimentary records are being studied at groundwater discharge complexes in southwestern New South Wales. These basins preserve a record of Late Quaternary lacustrine and aeolian processes, associated with either moist climatic phases with high groundwater and surface water levels, or drier deflationary periods. Susceptibility of these systems to quite minor changes in their hydrological budgets means that they may preserve a record of small magnitude climatic fluctuations, such as ENSO-type cycles, in addition to glacial and inter-glacial climate change. This research project involves stratigraphic and sedimentological analyses of the salt lake basin and arcuate dune sediments at a number of these complexes located in the semi-arid dune country to the west of the Darling River. Pollen and carbonized particle records from the lacustrine sequences will be used to determine past vegetation patterns and fire regimes. Optically Stimulated Luminescence (OSL) and AMS radiocarbon dating will be used to establish the timing of landscape changes and correlate geomorphic and ecological events. A palaeoenvironmental history for the last glacial cycle will be inferred using the proxy records.