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Abstract <p>A layer with an elevated concentration of chemical elements is found in the bottom sediments of Lake Peyungda, 30 km from the epicenter of the Tunguska Cosmic Body (TCB) explosion in 1908. It is studied by means of scanning X-ray fluorescence microanalysis, electron microscopy, and Raman spectroscopy. In the layer corresponding to the years 1908–1910, an increase is observed in the number of mineral grains resulting from the weathering of the surrounding rock, due likely to the TCB explosion.</p>

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Geochemical Model of the Formation of the Anomalous Layer of 1908–1910 in Bottom Sediments of Lake Peyungda (Tunguska Nature Reserve), According to Data from an X-Ray Fluorescence Microanalysis with Synchrotron Radiation

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • A. V. Darin,
  • V. S. Novikov,
  • D. Yu. Rogozin,
  • V. V. Babich,
  • T. I. Markovich,
  • F. A. Darin,
  • Ya. V. Rakshun,
  • D. S. Sorokoletov,
  • I. N. Okunev,
  • K. Yu. Karyukina

摘要

Abstract

A layer with an elevated concentration of chemical elements is found in the bottom sediments of Lake Peyungda, 30 km from the epicenter of the Tunguska Cosmic Body (TCB) explosion in 1908. It is studied by means of scanning X-ray fluorescence microanalysis, electron microscopy, and Raman spectroscopy. In the layer corresponding to the years 1908–1910, an increase is observed in the number of mineral grains resulting from the weathering of the surrounding rock, due likely to the TCB explosion.