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Lake Baikal climatic record between 310 and 50 ky BP: Interplay between diatoms, watershed weathering and orbital forcing
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SYSNO ASEP 0096609 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Lake Baikal climatic record between 310 and 50 ky BP: Interplay between diatoms, watershed weathering and orbital forcing Title Klimatický záznam období 310-50 tisíc let před současností z Bajkalského jezera: souhra mezi rozsivkami, zvětráváním v povodí a orbitálním řízením Author(s) Grygar, Tomáš (UACH-T)
Bláhová, Anna (UACH-T)
Hradil, David (UACH-T) RID, SAI
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Kadlec, Jaroslav (GLU-S) RID, SAI, ORCID
Schnabl, Petr (GLU-S) RID, SAI, ORCID
Swann, G. (GB)
Oberhänsli, H. (DE)Source Title Palaeogeography, Palaeoclimatology, Palaeoecology. - : Elsevier - ISSN 0031-0182
Roč. 250, 1-4 (2007), s. 50-67Number of pages 18 s. Language eng - English Country NL - Netherlands Keywords lake sediments ; climate change ; spectroscopy Subject RIV CA - Inorganic Chemistry R&D Projects IAA3032401 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40320502 - UACH-T (2005-2011) AV0Z3013912 - GLU-S Annotation The environmental record from Lake Baikal, Russia, from 3 10 to 50 ky BP (MIS 9a to MIS 3) was interpreted using rock magnetic, UV-Vis spectral, mineralogical, and diatom analyses. The age model was based on a correlation of the diatom and chemical weathering records and the summer insolation curve at 55 degrees N and checked against an age model based on the proxy of relative palacointensity of the Earth's magnetic field. Peaks in chemical weathering within the watershed, inferred from maximum concentration of magnetic and coloured minerals and mica, the lowest mean Fe oxidation state in silicates and highs in expandable clay minerals correlated with the Northern Hemisphere summer insolation minima at 55 degrees N. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2008
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