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Experimental Study of Impact Vaporization of Serpentinite

Authors
  • Yakovlev, O. I.1
  • Mokhov, A. V.1
  • Gornostaeva, T. A.1
  • Rybchuk, A. P.1
  • 1 Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia , Moscow (Russia)
Type
Published Article
Journal
Doklady Earth Sciences
Publisher
Pleiades Publishing
Publication Date
Feb 01, 2021
Volume
496
Issue
2
Pages
139–141
Identifiers
DOI: 10.1134/S1028334X21020203
Source
Springer Nature
Keywords
License
Yellow

Abstract

AbstractExperimental 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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