Geochemistry of the Bottom Sediments of Lake Peyungda, Tunguska Nature Reserve, and Paleoclimatic Reconstructions of the Arctic Territories of Eastern Siberia | Sciact - CRIS-system of Boreskov Institute of Catalysis

Geochemistry of the Bottom Sediments of Lake Peyungda, Tunguska Nature Reserve, and Paleoclimatic Reconstructions of the Arctic Territories of Eastern Siberia Full article

Journal

Geochemistry International
ISSN: 0016-7029 , E-ISSN: 1556-1968

Output data

Year: 2024, Volume: 62, Number: 5, Pages: 520-528 Pages count : 9 DOI: 10.1134/s0016702924700216

Tags

Evenkia, Tunguska Cosmic Body, Lake Peyungda, bottom sediments, geochemistry, micro-XRF, synchrotron radiation, temperature reconstructions

Authors

Novikov V.S. ¹ , Darin A.V. ¹ , Babich V.V. ¹ , Darin F.A. ² , Rogozin D.Yu. ³

Affiliations

1	Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2	Siberian Ring Photon Source Center for the Collective Use, Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
3	Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036 Russia

Lake Peyungda contains annually layered bottom sediments (varves), which make it possible to build a reliable age model for the entire depth of the core. An age model was refined over the last century based on the presence of a layer of anomalous thickness associated with the fall of the Tunguska cosmic body (TCB) in June 1908. The results of scanning µXRF-SI (elemental analysis along core depth) were used for comparison with regional average annual weather observation data over the time span of 1895–2000 to create a transfer function: average annual temperature as a function of the elemental composition of the dated layer of bottom sediment. Approximation of the obtained function to the depth of core sampling made it possible to reconstruct changes in regional temperature over the time interval of the last millennium with an annual time resolution. Comparison of the obtained reconstruction with literature data on reconstructions for the Arctic region over the past 1000 years shows the presence of general trends and extremes, which confirms the reliability of the obtained results.

Novikov V.S. , Darin A.V. , Babich V.V. , Darin F.A. , Rogozin D.Y.
Geochemistry of the Bottom Sediments of Lake Peyungda, Tunguska Nature Reserve, and Paleoclimatic Reconstructions of the Arctic Territories of Eastern Siberia
Geochemistry International. 2024. V.62. N5. P.520-528. DOI: 10.1134/s0016702924700216 WOS Scopus РИНЦ OpenAlex

Submitted:	Oct 26, 2023
Accepted:	Jan 1, 2024
Published print:	May 23, 2024
Published online:	May 23, 2024

Web of science:	WOS:001230232600007
Scopus:	2-s2.0-85194145965
Elibrary:	67656092
OpenAlex:	W4398252499

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