Инд. авторы:	Solotchina E.P., Sklyarov E.V., Solotchin P.A., Zamana L.V., Danilenko I.V., Sklyarova O.A., Tat'kov P.G.
Заглавие:	Authigenic carbonate sedimentation in Eravnoe group lakes (Western Transbaikalia): Response to Holocene climate change
Библ. ссылка:	Solotchina E.P., Sklyarov E.V., Solotchin P.A., Zamana L.V., Danilenko I.V., Sklyarova O.A., Tat'kov P.G. Authigenic carbonate sedimentation in Eravnoe group lakes (Western Transbaikalia): Response to Holocene climate change // Russian Geology and Geophysics. - 2017. - Vol.58. - Iss. 11. - P.1390-1400. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2017.11.005; WoS: 000417043100009;
Реферат:	eng: Sediments of intracontinental closed lakes are unique natural archives that store climate history records. We study Late Holocene carbonate-bearing sediments of Lake Dolgoe, a small saline lake in the Eravnoe basin on the Vitim Plateau (western Transbaikalia). Sediment samples have been analyzed by several methods: X-ray powder diffraction, infrared spectroscopy, stable isotope (O-18 and C-13) determination, laser diffraction particle size analysis, XRF elemental analysis, etc. The mineral phases of bottom sediments include clastic and carbonate components and hydromagnesite at the section top; carbonates are authigenic varieties of the calcite-dolomite series. Modeling of complex XRD profiles reveal Mg-calcite with various Mg contents and excess-Ca dolomites, which are mixed-structure crystals compositionally close to stoichiometric dolomite. The crystal structure and relative percentages of carbonates from the dated sedimentary section controlled by climate and lake level changes allow reconstructing the Holocene history of Lake Dolgoe. (C) 2017, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
Ключевые слова:	CRYSTAL-CHEMISTRY; PALYNOLOGICAL DATA; MAGNESIAN CALCITES; ELEMENTAL COMPOSITION; PALEOCLIMATIC SIGNALS; SALINE LAKE; BOTTOM SEDIMENTS; BAIKAL REGION; East Siberia; INFRARED-SPECTRA; Lake Dolgoe; paleoclimate; Late Holocene; O-18 and C-13 isotopes; infrared spectroscopy; XRD analysis; carbonates; bottom sediments; Eravnoe basin; MG CONCENTRATIONS;
Издано:	2017
Физ. характеристика:	с.1390-1400