GEOTHERMOMETRY AND GEOBAROMETRY OF PLAGIOCLASE-HORNBLENDE BEARING ASSEMBLAGES
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dc.contributor.author | Plyusnina L.P. | |
dc.date.accessioned | 2020-02-13T02:30:28Z | |
dc.date.available | 2020-02-13T02:30:28Z | |
dc.date.issued | 1982 | |
dc.identifier | https://elibrary.ru/item.asp?id=31025105 | |
dc.identifier.citation | CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1982, 80, 2, 140-146 | |
dc.identifier.issn | 0010-7999 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/15593 | |
dc.description.abstract | The reaction Hb+Zo(Ep)+H2O+CO2⇌Pl+ Chl+Cc+Q was studied under hydrothermal conditions at P total=2, 4, 6 and 8 kb at Xco2=0.1. The continious transition from tremolite (actinolite) to Al-rich hornblende was fixed along the equilibrium curve of the reaction, providing a complete solid solution in the calcic amphibole series. A dependence of Al content in Ca-amphiboles and coexisting plagioclases on PT-conditions of their crystallization, determined for a wide range of temperature (450–650° C) and pressure (2–8 kb), has been used for construction of the experimental geothermobarometer. This may be employed to deduce temperature and pressure conditions of metamorphism of the albite-epidote-amphibolite and the amphibolite facies metabasites, including zoisite (or epidote)-bearing assemblages. An application of the Hb-Pl geothermobarometer is illustrated on the Patom Highland amphibolites and also on the well-known mafic schists of Vermont. | |
dc.subject | Contrib Mineral Petrol | |
dc.subject | Equilibrium Curve | |
dc.subject | Metamorphic Terrain | |
dc.subject | Complete Solid Solution | |
dc.subject | Facies Series | |
dc.title | GEOTHERMOMETRY AND GEOBAROMETRY OF PLAGIOCLASE-HORNBLENDE BEARING ASSEMBLAGES | |
dc.type | Статья |
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