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Authigenic carbonate sedimentation in Eravnoe group lakes (Western Transbaikalia; response to Holocene climate change

E. P. Solotchina, E. V. Sklyarov, P. A. Solotchin, L. V. Zamana, I. V. Danilenko, O. A. Sklyarova and P. G. Tat'kov
Authigenic carbonate sedimentation in Eravnoe group lakes (Western Transbaikalia; response to Holocene climate change
Russian Geology and Geophysics (November 2017) 58 (11): 1390-1400

Abstract

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 ( (super 18) O and (super 13) C) 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.


ISSN: 1068-7971
Serial Title: Russian Geology and Geophysics
Serial Volume: 58
Serial Issue: 11
Title: Authigenic carbonate sedimentation in Eravnoe group lakes (Western Transbaikalia; response to Holocene climate change
Affiliation: Russian Academy of Sciences, V. Sobolev Institute of Geology and Mineralogy, Novosibirsk, Russian Federation
Pages: 1390-1400
Published: 201711
Text Language: English
Publisher: Allerton Press, New York, NY, United States
References: 75
Accession Number: 2021-074815
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, sketch map
N52°00'00" - N53°00'00", E110°00'00" - E112°30'00"
Secondary Affiliation: Russian Academy of Sciences, Institute of the Earth's Crust, Irkutsk, RUS, Russian FederationRussian Academy of Sciences, Institute of Natural Resourses Environment Cryology, Chita, RUS, Russian FederationRussian Academy of Sciences, Vinogradov Institute of Geochemistry, Irkutsk, RUS, Russian FederationRussian Academy of Sciences, Geological Institute, Ulan-Ude, Ulan-Ude, RUS, Russian Federation
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2021, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202152
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