For radiocarbon analysis, organic-rich sediment collected at P27 was sieved (150 mm sieve) to separate woody remains, which were submitted for AMS radiocarbon dating at Beta Analytics, USA. In addition, ostracods were extracted from a sample in P3 and submitted for AMS radiocarbon dating at the Australian Nuclear Sciences and Technology Organisation (ANSTO). The results were calibrated to calendar years using Calib 7.0 software and the
SHcal13 calibration curve (Hogg et al., 2013; Stuiver and Reimer,1993).