Radiocarbon ages of sediment core PG1414-2 from Beall Lake, Windmill Islands ...

• Main Authors: Roberts, Donna, McMinn, Andrew, Cremer, Holger, Gore, Damian B, Melles, Martin
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2004
• Subjects: Hand push corer; WindmillIslands1998; Casey; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; East Antarctic Ice Sheet; East Antarctica; Saline Lake; Vestfold; Vestfold Hills; Windmill Islands; Antarc*; Antarctica; Ice Sheet; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.849261; https://doi.pangaea.de/10.1594/PANGAEA.849261

A mid-Holocene climate optimum is inferred from a palaeosalinity reconstruction of a closed saline lake (Beall Lake) from the Windmill Islands, East Antarctica using an expanded diatom salinity weighted averaging (WA) regression and calibration model.The addition of 14 lakes and ponds from the Windmill Islands, East Antarctica, to an existing weighted averaging regression and calibration palaeosalinity model of 33 lakes from the Vestfold Hills, East Antarctica expands the number of taxa and lakes and the range of salinity in the existing model and improves the model's predictive ability. This improved model was used to infer Holocene changes in lake water salinity in Beall Lake, Windmill Islands.Six changes in diatom-inferred salinity in Beall Lake are put into broad chronological context based on three radiocarbon dates: as the East Antarctic Ice Sheet (EAIS) retreated from the Windmill Islands during the early Holocene (~9000-8130 corr. yr BP), Beall Lake formed as a melt water-fed freshwater lake, which ... : Supplement to: Roberts, Donna; McMinn, Andrew; Cremer, Holger; Gore, Damian B; Melles, Martin (2004): The Holocene evolution and palaeosalinity history of Beall Lake, Windmill Islands (East Antarctica) using an expanded diatom-based weighted averaging model. Palaeogeography, Palaeoclimatology, Palaeoecology, 208(1-2), 121-140 ...