Paleoclimate investiations on sediment core PG1984 from Lake Sysy-Kyuele, northern Siberia ...

• Main Authors: Biskaborn, Boris K, Herzschuh, Ulrike, Bolshiyanov, Dimitry Yu, Savelieva, Larissa A, Diekmann, Bernhard
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2012
• Subjects: SibLake; Hand push corer; Water sample; RU-Land_2009_Lena-transect; RU-Land_2009_Lena; AWI Arctic Land Expedition; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; lena river; permafrost; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.776490; https://doi.pangaea.de/10.1594/PANGAEA.776490

In northeastern Siberia, Russia, a 1.2 m sediment core was retrieved and radiocarbon dated from a small and shallow lake located at the western side of the lower Lena River (N 69°24', E 123°50', 81 m a.s.l.). The objective of this paper is to reconstruct the palaeoenvironmental variability and to infer major palaeoclimate trends that have occurred since ~ 13.3 cal. kyrs BP. We analysed the diatom assemblages, sedimentology (grain size, total organic carbon (TOC), total nitrogen (TN)), and the elemental and mineralogical composition using X-ray fluorescence (XRF) and X-ray diffractometry (XRD) of the sediment core. Our results show parallel changes in the diatom species composition and sediment characteristics. Enhanced minerogenic sediment input and the occurrence of pyrite is indicative of a cold period between ~ 12.7-11.6 cal. kyrs BP. The diatom data enable a qualitative inference about the local ecological conditions to be made, and reveal an oligotrophic lake system with alkaline and cold conditions ... : Supplement to: Biskaborn, Boris K; Herzschuh, Ulrike; Bolshiyanov, Dimitry Yu; Savelieva, Larissa A; Diekmann, Bernhard (2012): Environmental variability in northeastern Siberia during the last ~13300 yr inferred from lake diatoms and sediment-geochemical parameters. Palaeogeography, Palaeoclimatology, Palaeoecology, 329-330, 22-36 ...