Environmental change through the last glacial cycle at Fraser Island, subtropical Australia
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Date
2019-07-29
Journal Title
Journal ISSN
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Publisher
International Union for Quaternary Research (INQUA)
Abstract
Recent programs to extract detailed and longer records of Australia’s Pleistocene environments have produced a number of efforts to analyse long sedimentary sequences in the subtropical sand islands of Australia’s east coast. Echo Lake is a perched fen within ancient dune sands on Fraser Island at 25° S that provides a record of precipitation change over ~100 ka. A 12 metre core into the (now) ephemeral swamp revealed lacustrine sedimentation in a period of higher precipitation, followed by a transition to swamp sedimentation as water levels fell. The chronology, based on 14C and OSL ages, suggests parts of the record may be interrupted or lost owing to drying or burning of the surface. Here we present an updated OSL chronology together with pollen analysis and ITRAX-XRF proxies for palaeoenvironmental change over the last glacial cycle in subtropical Australia.
Description
Keywords
Environment, Climatic change, Australia, Islands, Glaciers, Sand, X-ray fluorescence analysis, Water
Citation
Kemp, J., Heijnis, H., Longmore, M., Gadd, P., Spooner, N., & Questiaux, D. (2019). Environmental change through the last glacial cycle at Fraser Island, subtropical Australia. Paper presented to the 20th INQUA Congress 25th - 31st July 2019, Dublin, Ireland. Retrieved from: https://virtual.oxfordabstracts.com/#/event/public/574/submission/1759