Eclogites and eclogite-facies rocks
著者
書誌事項
Eclogites and eclogite-facies rocks
（Developments in petrology, 12）
Elsevier, 1988
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注記
Bibliography: p. 510-519
Includes index
内容説明・目次
内容説明
Devoted entirely to eclogites and eclogite-facies rocks, this book is composed of a series of reviews, including one on the Norwegian coesite-eclogite province where a great number of peculiar mineral compositions or associations occur. The book incorporates large quantities of petrographic detail, and much previously unpublished data. Selected parts of the book deal exhaustively with specific topics, for example: - an extensive review and bibliography of eclogites in the Western Gneiss Region of Norway (a classic area whose diversity and complexity encompasses much of what occurs in eclogites throughout the globe) - microtextural descriptions of eclogites from Vendee, France (providing a wealth of data on the Hercynian Orogen) - rare earth element and other trace element bulk-rock chemical data from Australian and Colorado Plateau xenoliths - petrological and mineral chemical data from various Colorado Plateau xenoliths and acid eclogites in Greece and New Caledonia.
目次
1. A review of the peculiar mineralogy of the ``Norwegian coesite-eclogite province'', with crystal-chemical, petrological, geochemical and geodynamical notes and an extensive bibliography (D.C. Smith). Introduction. An outline of the regional geological, geochemical and geodynamical contexts of the eclogite-bearing Western Gneiss Region. The Norwegian coesite-eclogite province: a mineralogist's paradise and a petrologist's nightmare. Specific petrogenetic interpretations of all the peculiar minerals in ecolgites and retrogressed eclogites. General comments on the crystal-chemical petrology of the peculiar minerals. The regional context of eclogites in the Western Gneiss Region. Epilogue: geodynamical aspects of pressure in metamorphism. Conclusions. 2. A review of chemical zoning in eclogite garnets (E.D. Ghent). Introduction. Common zoning patterns in eclogite garnet. Estimation of apparent chemical potential gradients. Models for garnet zoning. Types of garnet zoning which do not fit simple zoning models. Isothermal fractionation model. Chemical zoning in garnets due to changes in temperature and/or pressure during crystallization. Exsolution in garnet. Effects of diffusion upon homogenization of garnet and upon garnet-clinopyroxene Mg-Fe exchange geothermometry. Conclusions. 3. A review of the crystal-chemistry of clinopyroxenes in eclogites and other high-pressure rocks (G. Rossi). Introduction. The crystal structure of clinopyroxenes. The crystal chemistry of the end members. Clinopyroxenes of intermediate composition. Methods and techniques in the study of order-disorder phenomena. Structural variations in the system Di-Jd. Cation ordering. Subsolidus phenomena in omphacites. The omphacite phase diagram and its petrological implications. Conclusions. 4. Mineral parageneses in eclogite-facies meta-acidites in northern New Caledonia (P.M. Black et al). Introduction. Petrology of eclogite meta-acidites. Mineralogy of New Caledonian eclogite meta-acidites. Discussion. Conclusions. 5. Meta-acidites and silicic meta-sediments related to eclogites and glaucophanites in northern Sifnos, Cycladic Archipelago, Greece (M. Schliestedt, M. Okrusch). Introduction. General geology. The high-pressure sequence on Sifnos. Petrography. Bulk-rock chemistry. Mineral chemistry. White micas. Epidotes. Deerites. P-T conditions of Eocene high-pressure metamorphism. Conclusions. 6. Trace element and isotopic characteristics of eclogites and other xenoliths derived from the lower continental crust of southeastern Australia and southwestern Colorado Plateau, U.S.A. (R.J. Arculus et al). Introduction. Xenolith localities and geological setting. Xenolith types. Phase chemistry. Bulk rock chemistry. Isotopic data. Wave velocity - density measurements. Pressure-temperature estimates. Discussion. Conclusions. 7.
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