Was the Oligocene-Miocene a time of fire and rain? Insights from brown coals of the southeastern Australia Gippsland Basin
Guy R Holdgate, Malcolm W Wallace, Ian RK Sluiter, Daniel Marcuccio, Thomas A Fromhold, Barbara E Wagstaff
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY | ELSEVIER SCIENCE BV | Published : 2014
Lithotype cycles (ranging from 10 to 30. m thick) in the brown coals of the Latrobe Valley, Gippsland Basin, Australia, display well-developed lightening-upward trends. Cycle tops are characterized by abrupt and unconformable boundaries with the overlying cycle. Geological, geochemical, palynological and macrofossil evidence is consistent with a relative drying (terrestrialization) upward depositional model for the cycles.The abundance of charcoal in dark lithotypes near the cycle bases is explained by the fire-prone and highly flammable nature of the herbaceous/reed wetlands, in common with similar modern wetlands in modern Australasia, in which the dark lithotypes are suggested to have for..View full abstract
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Awarded by ARC
We acknowledge financial assistance from ARC Discovery Grant No. DP0558705 (Murray Basin) and ARC Discovery Grant No. DP0558150 (Southern Gateways).