National Science and Technology Supporting Project, No.2006BAK21B02; National Natural Science Foundation of China, No.40671016; National Key and Basic Development Research Project of China, No.2003CB415201; Program of Archeological Research Center of Peking University; Youth Science Foundation of NSFC, No: 40901012 ^14C ages were tested by Scientific and Technological Archaeology and Heritage Conservation Laboratory in School of Archeology and Museology, Peking University; the percentage content of clay minerals was determined by Dr. Wang Hejin in School of Earth and Space Sciences, Peking University, who was helpful in extracting the clay minerals; trace elements were determined by the Hebei Provincial Institute of Geological Survey.
Paleosalinity records of the Tianluoshan site are derived from measurations data of clay mineral, boron, strontium, barium, after field sampling in three profiles of the Tianluoshan site. The relative sea level change...