Last glacial period lake sediment data from Lake Sihailongwan, N.E. China

• Main Authors: Mingram, Jens, Stebich, Martina, Schettler, Georg, Hu, Yaqin, Dulski, Peter, Nowaczyk, Norbert R, Liu, Qiang, Liu, Jiaqi, You, Haitao, Opitz, Stephan, Rioual, Patrick
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Changbai Mountains region; Jilin Province; NE China; COMPCORE; Composite Core; GeoForschungszentrum Potsdam; GFZ; SHL; Sihailongwan Maar Lake; Greenland; Greenland ice cores
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.885907; https://doi.org/10.1594/PANGAEA.885907

Lake Sihailongwan in Jilin province, NE China, provides the first continuous and almost entirely seasonally laminated sediment record on the East Asian mainland comprising the complete Holocene, the Late-glacial period, and large parts of the Last Glacial. Sediment and palynological proxy data provide a finely resolved regional environmental history of the East Asian monsoon. A varve-based chronology (shl-vc2) has been established for the last 65,000 years and allows a detailed comparison with other long regional and global palaeoclimate records. Vegetation density of the study area depends, on the long run, on precessionally forced insolation changes, with superimposed millennial-scale variability during the Last Glacial. Periodic increase of organic carbon content and thermophilous tree species like Ulmus and Fraxinus and contemporary decrease of shrub Alnus precisely mirror millennial-scale climatic variations primarily known from Greenland ice-cores as Dansgaard-Oeschger cycles, as well as Late-glacial period climate changes. Percentages of trees & shrubs pollen and in particular lake productivity-related data reveal substantial differences between interstadial intensities, with those between 50 – 60 ka BP being more pronounced than the following ones.