Thermodynamic settings of melting and melt ascent from magmatic chambers using the example of Klyuchevskoi Volcano |
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| Authors: | N V Chertkova A E Tsai N L Mironov V D Shcherbakov |
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| Institution: | 1.Department of Petrology, Faculty of Geology,Moscow State University,Moscow,Russia;2.Vernadsky Institute of Geochemistry and Analytical Chemistry,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | Theoretical models and experimental data on the thermodynamic and rheological properties of basalts from the Apakhonchich
lava flow (Klyuchevskoi Volcano, Kamchatka) were invoked for plotting projections of water-containing and dry liquidus and
solidus curves on the P
s
-T plane. The P-T-X
H
2O conditions for the formation of basaltic magma and the degree of its differentiation were determined from data on melt inclusions.
The calculated apparent viscosity of the melt containing 10% crystals at 1100°C, 1 GPa, and 3 wt % water is 1.1 × 103 Pa s, and the density is 2.5 g/cm3. |
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