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Composition and Microscopic Features of Background Cosmic Dust from Peat

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Minerals: Structure, Properties, Methods of Investigation

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Abstract

A technique has been developed that makes it possible to separate from peat and identify a significant number of particles of background cosmic dust (CD), including presumably interstellar particles. Comparative studies of peat sections from the Yaroslavl region and from the site of the fall of the Tunguska space body (TSB) have been carried out. The background magnetic component of the CD contains mainly magnetite microspheres and particles of native metals. Most often we managed to detect native Fe and FeCr alloy. Studying these particles by other methods will yield in new fundamental results on the origin of the CD, and layers with a high CD content can be used as stratigraphic frames. The microparticles isolated from the site of the TSB fall with traces of high-temperature action are very different from the background component of the CD and can be attributed to the TSB substance.

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Acknowledgements

The work was carried out within the budget topic “Spatial-temporal structure of the ancient geomagnetic field and petrophysics of magnetic minerals as indicators of geological and geophysical processes”, State Registration No. AAAA-A17-117040610183-6. Microprobe studies were carried out with the support of the Russian Foundation for Basic Research, project No. 16-05-00703a.

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Authors and Affiliations

  1. Borok Geophysical Observatory, The Branch of Shmidt’s Institute of Physics of the Earth, Borok, bldg. 142, Nekouz District, Yaroslavl Region, 152742, Russia

    Vladimir A. Tselmovich

Authors
  1. Vladimir A. Tselmovich
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Correspondence to Vladimir A. Tselmovich .

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Editors and Affiliations

  1. Institute of Geology and Geochemistry, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia

    Sergei Votyakov

  2. Institute of Geology and Geochemistry, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia

    Daria Kiseleva

  3. Ural Federal University, Ekaterinburg, Russia

    Viktor Grokhovsky

  4. Institute of Geology and Geochemistry, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia

    Yulia Shchapova

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Tselmovich, V.A. (2020). Composition and Microscopic Features of Background Cosmic Dust from Peat. In: Votyakov, S., Kiseleva, D., Grokhovsky, V., Shchapova, Y. (eds) Minerals: Structure, Properties, Methods of Investigation. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-030-00925-0_37

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