Investigations on sediment profile PG1111 from Taymyr Peninsula, Siberia ...

• Main Authors: Harwart, Stefanie K, Hagedorn, Birgit, Melles, Martin, Wand, Ulrich
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1999
• Subjects: Composite Core; RU-Land_1993_Norilsk_Taymyr; AWI Arctic Land Expedition; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; Quaternary Environment of the Eurasian North QUEEN; Ice; permafrost; Taymyr; Taymyr Peninsula; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.727577; https://doi.pangaea.de/10.1594/PANGAEA.727577

In order to evaluate the sensitivity of aquatic and terrestrial ecosystems to climatic changes, lithological (sediment structure and color, grain size, physical properties) and biochemical (TOC, TOC/TN, d13C of TOC and carbonates) investigations were carried out on an 11.12 m-long sediment core from Lama Lake (Central Siberia, Putorana Plateau). According to the pollen data, the sequence represents the termination of the Pleistocene, and the entire Holocene. It is composed of highly terrigenous and stratified clays and silts. Sediment structure, grain-size distribution, carbonate contents and physical properties of the sediment indicate that glaciers were present in the catchment area of Lama Lake during the period Oldest Dryas to Allerød. For the same time period, d13C values of TOC give indications of a perennial ice cover. Since the Allerød, organic matter accumulation has increased, caused by an increasing input of land vegetation and aquatic primary production as revealed by relations TOC contents, ... : Supplement to: Harwart, Stefanie K; Hagedorn, Birgit; Melles, Martin; Wand, Ulrich (1999): Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia. Boreas, 28(1), 167-180 ...