Open AccessAuthigenic carbonates from holocene sediments of Lake Itkul (south of West Siberia) as indicators of climate changes
Author(s) -
Э. П. Солотчина,
M. I. Kuzmin,
П. А. Солотчин,
A. E. Maltsev,
G. A. Leonova,
И. В. Даниленко
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-5652487154-59
Subject(s) - authigenic , carbonate , geology , holocene , geochemistry , sedimentary rock , granulometry , carbonate minerals , oceanography , geomorphology , sediment , calcite , materials science , metallurgy
The results of the study of carbonate-containing bottom sediments from the shallow brackish Lake Itkul (Western Siberia) are presented. The research methods include X-ray diffractometry (XRD), IR spectroscopy, laser granulometry, elemental analysis, etc. By the modeling of XRD carbonate profiles with the Pearson VII function, carbonate phases were identified and their quantitative ratios were determined. By the comparing of carbonate record with lithological, geochemical data in a dated sedimentary section, the evolution of the lake basin in the Holocene caused of climatic changes was reconstructed. Mineralogical signals of the global climatic event known as Bond event 4 in the South of West Siberia have been discovered.