Evolution of Jilantai Salt Lake, Inner Mongolia in the last 13. 8 ka

Evolution of Jilantai Salt Lake in the last 13.8ka was reconstructed based on the analysis of evaporate minerals,carbonate minerals and detrital minerals from the core JLT-2010.The lake water was fresh or slightly salty between 13.8 and 11.7 calkaBP.The lake began to shrink between 11.7 and 10.2 calkaBP,and then it entered into the lagoon stage.Sulfate deposition occurred in Jilantai Salt Lake between 10.2 and 5.5 calkaBP,meanwhile,from 9.0 to 8.2 calkaBP there existed a significant desalination process.The lake reached full chloride deposition stage between 3.7 and 2.0 calkaBP,and a short and obvious desalt period occurred between 2.0 and 1.7 calkaBP.Overall,evaporate minerals appeared just at the beginning of the Holocene when temperature increased relative to the late glacial.As the regional arid climate continually affecting the area,Jilantai Salt Lake gradually shrank and salinized.