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Experimental Study of Impact Vaporization of Serpentinite

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Abstract

Experimental data on impact vaporization of serpentinite are presented. The experiment was carried out using a two-stage light gas gun with an impact velocity ∼6 km/s. Copper with a mass up to 0.5 g was used as the projectile. Impact-generated vapor in the form of a condensate film was analyzed using a JSM-5610 scanning electron microscope. The analysis showed that the Mg/Si ratio in the condensate decreased sharply (by ∼1.8 times) compared to the initial ratio in the serpentinite target. Thus, it is shown that the evaporation of the impact melt of the silicate target is selective: the vapor is enriched with relatively volatile SiO2, leaving a relatively nonvolatile MgO in the residual melt.

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Funding

This study was supported by a State Assignment within the framework of theme no. 0137-2019-0015 “Radiogenic and stable isotopes in the study of the evolution of extraterrestrial matter, the Earth’s mantle and the crust-mantle system.”

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Authors and Affiliations

  1. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    O. I. Yakovlev, A. V. Mokhov, T. A. Gornostaeva & A. P. Rybchuk

Authors
  1. O. I. Yakovlev
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  2. A. V. Mokhov
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  3. T. A. Gornostaeva
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  4. A. P. Rybchuk
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Corresponding author

Correspondence to A. V. Mokhov.

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Translated by M.S. Nickolsky

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Yakovlev, O.I., Mokhov, A.V., Gornostaeva, T.A. et al. Experimental Study of Impact Vaporization of Serpentinite. Dokl. Earth Sc. 496, 139–141 (2021). https://doi.org/10.1134/S1028334X21020203

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  • DOI: https://doi.org/10.1134/S1028334X21020203

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