Geochemical model of the formation of anomalous layer 1908–1910 in bottom sediments of Lake Peyungda (Tunguska Nature Reserve) according to the data of X-ray fluorescence microanalysis with synchrotron radiation

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Abstract

In the bottom sediments of Lake Peyungda, located 30 km from the epicenter of the Tunguska Cosmic Body (TCB) explosion in 1908, a layer with an increased concentration of chemical elements has been found. For its study, methods of scanning X-ray fluorescence microanalysis, electron microscopy, and Raman spectroscopy have been employed. In the layer corresponding to the years 1908–1910, there is an observed increase in the number of mineral grains resulting from the weathering of the surrounding rock, which is likely associated with the TCB explosion.

About the authors

A. V. Darin

V. S. Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences

Email: avd@igm.nsc.ru
Novosibirsk, Russia

V. S. Novikov

V. S. Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences

Novosibirsk, Russia

D. Yu. Rogozin

Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences

Krasnoyarsk, Russia

V. V. Babich

V. S. Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences

Novosibirsk, Russia

T. I. Markovich

V. S. Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences

Novosibirsk, Russia

F. A. Darin

Center for Collective Use "Siberian Ring Photon Source", Federal Research Center G.K. Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences

Koltsovo, Russia

Ya. V. Rakshun

Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences

Novosibirsk, Russia

D. S. Sorokoletov

Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences

Novosibirsk, Russia

I. N. Okunev

Center for Collective Use "Siberian Ring Photon Source", Federal Research Center G.K. Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences; Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences

Koltsovo, Russia; Novosibirsk, Russia

K. Yu. Karyukina

Center for Collective Use "Siberian Ring Photon Source", Federal Research Center G.K. Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences; Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences

Koltsovo, Russia; Novosibirsk, Russia

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