Influence of meteorological conditions on the geochemistry of modern bottom sediments exemplified by deposits of Donguz-Orun Lake, Caucasus

• Published in: Doklady earth sciences Vol. 463; no. 2; pp. 842 - 846
• Main Authors: Darin, A. V., Aleksandrin, M. Yu, Kalugin, I. A., Solomina, O. N.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.08.2015; Springer; Springer Nature B.V
• Subjects: Bottom sediments; Earth and Environmental Science; Earth Sciences; Freshwater; Geochemistry; Geography; Lakes; Meteorology; Paleoclimate; Sample preparation; Sediments; Sediments (Geology); Studies; Weather; X-ray fluorescence; Caucasus; Russia, Northern Caucasus; Annual Layer; DOKLADY Earth Science; Elbrus; 210Pb; Bottom Sediment
• ISSN: 1028-334X; 1531-8354
• DOI: 10.1134/S1028334X15080097

Cores of bottom sediments from epiglacial Donguz-Orun Lake (Cis-Elbrusian, Northern Caucasus) have been studied. Here we present descriptions of the sampling techniques, sample preparation, and analytical procedures by the X-ray fluorescence method. The sedimentation rate, estimated by calculation of peaks of the Rb/Sr ratio as well as employing isotope concentrations of 137 Cs and 210 Pb in the upper parts of the core, permitted us to assume the annual character of the regularly laminated sediment. A statistically significant correlation between the concentration variations of certain chemical elements and their groups in the sediment against normalized meteorological data from the Terskol meteorological station has been revealed. This makes the studied object applicable for development of high resolution palaeoclimate reconstructions.