Kazan Federal University Digital Repository

Periodization of holocene climatic cycles based on synchronous variations in the magnetic and geochemical parameters of the sediments of lake Bolshoe Yarovoe (Southwestern Siberia)

Show simple item record

dc.contributor.author Kosareva L.R.
dc.contributor.author Shcherbakov V.P.
dc.contributor.author Nurgaliev D.K.
dc.contributor.author Nurgalieva N.G.
dc.contributor.author Sycheva N.K.
dc.contributor.author Antonenko V.V.
dc.contributor.author Kuzina D.M.
dc.contributor.author Evtyugin V.G.
dc.date.accessioned 2021-02-25T20:38:04Z
dc.date.available 2021-02-25T20:38:04Z
dc.date.issued 2020
dc.identifier.issn 1068-7971
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/162128
dc.description.abstract © 2020, V.S. Sobolev IGM, Siberian Branch of the RAS. Variations in the magnetic and geochemical properties of the sediments of Lake Bolshoe Yarovoe (Altai Territory) were studied. The data were derived from five core columns (up to 4.5 m long) covering a time interval of more than 8000 years. In addition, coercive spectra were obtained for 792 samples taken every 2 cm. Coercive spectra were then used to identify soft magnetic (10-15 mT) and hard magnetic (35-50 mT) components. The soft magnetic component is detrital, and the hard magnetic component is biogenic, which is confirmed by microscopic studies. Moreover, the samples contain micrometeorite particles. Variations in geochemical properties allow reconstruction of the environmental history of the lake. Sediments in the lower part of the section vary both in the content of ferrimagnetic components and in geochemical properties, which indicates a sharp environmental change between ∼6100 and ∼7600 years ago. Quasiperiodic alternation of warm (dry) and cool (humid) periods is observed higher in the section, between ∼4100 and ∼6100 years ago. The variations in the magnetic components are consistent with the environmental changes and can be used for the historical reconstruction.
dc.relation.ispartofseries Russian Geology and Geophysics
dc.subject Coercive spectra
dc.subject Ferrimagnetic components
dc.subject Holocene climate
dc.subject Lacustrine sediments
dc.subject Magnetic properties
dc.subject Magnetotactic bacteria
dc.title Periodization of holocene climatic cycles based on synchronous variations in the magnetic and geochemical parameters of the sediments of lake Bolshoe Yarovoe (Southwestern Siberia)
dc.type Article
dc.relation.ispartofseries-issue 7
dc.relation.ispartofseries-volume 61
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 723
dc.source.id SCOPUS10687971-2020-61-7-SID85093869787


Files in this item

This item appears in the following Collection(s)

  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

Show simple item record

Search DSpace


Advanced Search

Browse

My Account

Statistics