SEARCH FOR AEROSOL MICROPARTICLES IN DATED LAYERS OF BOTTOM SEDIMENTS USING SYNCHROTRON RADIATION-Reference-Cited by-同舟云学术

SEARCH FOR AEROSOL MICROPARTICLES IN DATED LAYERS OF BOTTOM SEDIMENTS USING SYNCHROTRON RADIATION

Published:2022-03-15 Issue:2 Volume:13 Page:
ISSN:2078-502X
Container-title:Geodynamics & Tectonophysics
language:
Short-container-title:Geodin. tektonofiz.

Author:

Darin A. V.¹,Darin F. A.²,Rakshun Ya. V.³,Sorokoletov D. S.³,Gogin A. A.⁴,Senin R. A.⁴

Affiliation:

1. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

2. Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences; Shared Research Facilities SKIF of the Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences

3. Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences

4. National Research Center "Kurchatov Institute"

Abstract

The SR-micro-XRF method was used to search for microparticles of extraterrestrial matter in the bottom sediments of Lake Zapovednoye, located 60 km from the epicentre of the explosion of the Tunguska cosmic body (TCB) in 1908. The material of bottom sediments dating back to 1908–1910 was studied. The samples for the study were prepared in the form of a powder applied to a conductive adhesive tape, which made it possible to combine the data of optical observations, electron microscopy, and micro-XRF scanning. The experiments were carried out at the Large-Scale Research Facilities "Kurchatov Centre for Synchrotron Research" using a confocal X-ray microscope developed at the Budker Institute of Nuclear Physics SB RAS. The data obtained indicate the presence of microparticles with an increased Ni/Fe ratio, possibly of extraterrestrial origin.

Publisher

Institute of Earth's Crust, Siberian Branch of the Russian Academy of Sciences

Subject

Earth-Surface Processes,Geophysics,Geology,Economic Geology

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