The Composition of Melt Inclusions in Minerals from Tephra of the Soil–Pyroclastic Cover of Simushir Island (Central Kuril Islands)
- Authors: Shcherbakov V.D.1, Nekrylov N.A.2, Savostin G.G.1, Popov D.V.3, Dirksen O.V.4
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Affiliations:
- Department of Geology
- Fersman Mineralogical Museum
- Faculty of Earth Sciences
- Institute of Volcanology and Seismology, Far East Branch
- Issue: Vol 73, No 1 (2018)
- Pages: 31-42
- Section: Article
- URL: https://journals.rcsi.science/0145-8752/article/view/174591
- DOI: https://doi.org/10.3103/S014587521801009X
- ID: 174591
Cite item
Abstract
The compositions of approximately 70 naturally quenched melt inclusions in olivine, clinopyroxene, orthopyroxene, and plagioclase phenocrysts from tephra of the soil–pyroclastic cover of Simushir Island (Central Kuril Islands) were studied. The concentrations of the major rock-forming components, H2O, S, and Cl were analyzed in inclusions. The reconstructed melts contain 48.6–78.4 wt % SiO2, 0.3–8.26 wt % MgO, and 0.12–1.72 wt % K2O. The concentration of S and Cl in the melts changes regularly with increasing SiO2 content: from 0.14 to ~0.02 wt % S and from ~0.05 to ~0.28 wt % Cl. The content of H2O in parental melts is 4.2–4.5 wt %.
Keywords
About the authors
V. D. Shcherbakov
Department of Geology
Author for correspondence.
Email: vasiliy7@gmail.com
Russian Federation, Moscow, 119991
N. A. Nekrylov
Fersman Mineralogical Museum
Email: vasiliy7@gmail.com
Russian Federation, Moscow, 117071
G. G. Savostin
Department of Geology
Email: vasiliy7@gmail.com
Russian Federation, Moscow, 119991
D. V. Popov
Faculty of Earth Sciences
Email: vasiliy7@gmail.com
Switzerland, Geneva
O. V. Dirksen
Institute of Volcanology and Seismology, Far East Branch
Email: vasiliy7@gmail.com
Russian Federation, Petropavlovsk-Kamchatsky, 683006