Reference Type | Journal (article/letter/editorial) |
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Title | High pressure metamorphism in Ghiaros Island, Cyclades, Greece |
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Journal | Geological Society, London, Special Publications |
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Authors | Katagas, Christos G. | Author |
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Year | 1984 (January) | Volume | 17 |
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Page(s) | 537-544 | Issue | 1 |
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Publisher | Geological Society of London |
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URL | |
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DOI | doi:10.1144/gsl.sp.1984.017.01.40Search in ResearchGate |
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| Generate Citation Formats |
Classification | Not set | LoC | Not set |
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Mindat Ref. ID | 424382 | Long-form Identifier | mindat:1:5:424382:7 |
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GUID | 0 |
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Full Reference | Katagas, Christos G. (1984) High pressure metamorphism in Ghiaros Island, Cyclades, Greece. Geological Society, London, Special Publications, 17 (1). 537-544 doi:10.1144/gsl.sp.1984.017.01.40 |
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Plain Text | Katagas, Christos G. (1984) High pressure metamorphism in Ghiaros Island, Cyclades, Greece. Geological Society, London, Special Publications, 17 (1). 537-544 doi:10.1144/gsl.sp.1984.017.01.40 |
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In | (1984) Special Publication Vol. 17. Geological Society of London |
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Abstract/Notes | Summary
The various rock types encountered in Ghiaros island have suffered an episode of progressive regional metamorphism which produced high pressure low temperature assemblages with Na-pyroxene and glaucophane. Later in their metamorphic history the rocks were affected by retrograde metamorphism. Glaucophane crystals became continuously zoned and sodic pyroxene crystals developed a patchy composition. Zoning in amphiboles extends from glaucophanitic cores through intermediate Na-Ca winchite compositions to actinolite rims. The compositional differences observed between the various patches in individual pyroxene crystals are interpreted to reflect contrasting P-T conditions which drive the continuous reaction jadeitic pyroxene + quartz β albite + acmitic pyroxene + quartz, to progressively less jadeite-rich pyroxene. |
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