SOLUBILITIES OF CARBON DIOXIDE AND WATER IN RHYOLITIC MELT AT 850°C AND 750 BARS
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.
dc.contributor.author | Blank J.G. | |
dc.contributor.author | Stolper E.M. | |
dc.contributor.author | Carroll M.R. | |
dc.date.accessioned | 2020-11-11T06:16:57Z | |
dc.date.available | 2020-11-11T06:16:57Z | |
dc.date.issued | 1993 | |
dc.identifier | https://elibrary.ru/item.asp?id=31594893 | |
dc.identifier.citation | Earth and Planetary Science Letters, 1993, , 1, 27-36 | |
dc.identifier.issn | 0012-821X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/18924 | |
dc.description.abstract | Concentrations of carbon dioxide and water dissolved in glasses quenched from rhyolitic melts equilibrated with H_2O-CO_2 fluids at 850°C and 750 bar were measured using infrared spectroscopy; concentrations of H_2O and CO_2 in the quenched fluids were measured manometrically. The mole fraction of CO_2 in the quenched fluid ranged from 0.06 to 0.91. Concentrations of CO_2 in the coexisting rhyolitic melt increased from 23(±6) ppm for the sample equilibrated with the most CO_2-poor fluid to 515(±16) ppm for that equilibrated with the most CO_2-rich fluid. The water content of the melt varied from 0.51(±0.06) to 3.34(±0.08) wt%. Our results show that concentrations of molecular CO_2 and H_2O in the glasses obey Henry's Law; i.e., the mole fractions of molecular CO_2 and molecular H_2O in the quenched melts are proportional to their fugacities in the coexisting vapor. CO_2 contents of vapor-saturated melts are not enhanced by addition of water to CO_2-rich vapor, contrary to previous reports for silicate melts at higher pressures. The Henrian behavior of CO_2 and H_2O at low pressure considerably simplifies modeling of the degassing of silicic magmas. | |
dc.title | SOLUBILITIES OF CARBON DIOXIDE AND WATER IN RHYOLITIC MELT AT 850°C AND 750 BARS | |
dc.type | Статья |
Files in this item
This item appears in the following Collection(s)
-
ELibrary
Метаданные публикаций с сайта https://www.elibrary.ru