PETROLOGY OF FORSTERITE-CLINOHUMITE MARBLES OF THE VORONEZH CRYSTALLINE MASSIF
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dc.contributor.author | Savko K.A. | |
dc.contributor.author | Skryabin V.Y. | |
dc.date.accessioned | 2021-01-15T10:59:34Z | |
dc.date.available | 2021-01-15T10:59:34Z | |
dc.date.issued | 1999 | |
dc.identifier | https://elibrary.ru/item.asp?id=32784044 | |
dc.identifier.citation | Russian Geology and Geophysics, 1999, 40, 4, 576-591 | |
dc.identifier.issn | 1068-7971 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/23156 | |
dc.description.abstract | Clinohumite-bearing parageneses Cal + Dol + Chu 4- Fo + Tr + Phi, Cdl + Dol + Chu + Fo + Phi, Cal + Dol + Chu + Sp, and Cal + Chu + PI + Qtz, referred to the progressive stage of regional metamorphism, have been revealed in the Archean marbles of the Voronezh Crystalline Massif (VCM). Clinohumite-forsterite-calcite-dolomite equilibria are poorly studied compared with other aspects of mctamorphism of carbonate rocks with H2O-CO2-HF fluid phase. In the presence of this fluid phase metamorphic paragcneses differ from ordinary well-studied mineral assemblages 0Г magnesian marbles and are stable in a narrow range of /'-T-Xcoj-Conditions, characterized by a low CO2 activity in the fluid, low and moderate pressures, and temperatures of 500-750 °C. Analysis of the T-XcOi phase diagrams of the studied clinohumite-bearing parageneses permitted determination of Хсог (0.08) and the temperature range of their stability (500-700 °C) at P = 5 kbar. The composition of the fluid phase was completely or partly buffered by metamorphic reactions. | |
dc.subject | MAGNESIAN MARBLES | |
dc.subject | CLINOHUMILE | |
dc.subject | FORSTERIIE | |
dc.subject | FLUID PHASE | |
dc.subject | BUFFERING | |
dc.title | PETROLOGY OF FORSTERITE-CLINOHUMITE MARBLES OF THE VORONEZH CRYSTALLINE MASSIF | |
dc.type | Статья |
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