Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika
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Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika, 2018, Number 6, Pages 59–64 (Mi vmumm585)  
Mechanics

Effect of quartz deposition on the dynamics of magma chamber degassing

I. S. Utkina, O. È. Mel'nikb, A. A. Afanasyevb, Yu. D. Tsvetkovab

a Lomonosov Moscow State University, Faculty of Mechanics and Mathematics
b Lomonosov Moscow State University, Institute of Mechanics
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Abstract: Numerical simulation of supercritical brine flow in a porous medium during the degassing of a magma chamber with consideration of the transport and quartz precipitation is performed. It is shown that the precipitation of quartz and the accompanying decrease in permeability reduce the dimensions of the concentrated brine lens formed above the chamber. The effect of hydraulic fracture of rocks on the lens formation is studied. A nonstationary degassing regime is revealed, which is associated with a periodic increase and decrease in permeability due to fracturing and quartz precipitation. The numerical results are in agreement with the geological data on the structure of copper deposits.
Key words: magma chamber, porous media, flows in porous media, phase transitions.
Funding agency Grant number
Russian Science Foundation 16-17-10199
Received: 22.11.2017
English version:
Moscow University Mechanics Bulletin, 2018, Volume 73, Issue 6, Pages 129–134
DOI: https://doi.org/10.3103/S0027133018060018
Bibliographic databases:
Document Type: Article
UDC: 511
Language: Russian
Citation: I. S. Utkin, O. È. Mel'nik, A. A. Afanasyev, Yu. D. Tsvetkova, “Effect of quartz deposition on the dynamics of magma chamber degassing”, Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 2018, no. 6, 59–64; Moscow University Mechanics Bulletin, 73:6 (2018), 129–134
Citation in format AMSBIB
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\pages 59--64
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\jour Moscow University Mechanics Bulletin
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\vol 73
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\pages 129--134
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