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・ Ecliptopera capitata
・ Ecliptopera muscicolor
・ Ecliptopera rectilinea
・ Ecliptopera silaceata
・ Ecliptophanes
・ Ecliptophanes bucki
・ Ecliptophanes chacunfrancozi
・ Ecliptophanes laticornis
・ Ecliptophanes scopipes
・ Ecliptophanes silvai
・ Ecliptophanes tommyi
・ Eclogavena
・ Eclogavena coxeni
・ Eclogavena dani
・ Eclogavena quadrimaculata
Eclogite
・ Eclogitization
・ Eclogue
・ Eclogue 4
・ Eclogue of Theodulus
・ Eclogues
・ Eclogues (Dante)
・ Eclogues of Calpurnius Siculus
・ Eclose
・ Eclose-Badinières
・ Eclox
・ ECLR-attributed grammar
・ Ecluse Saint-Pierre
・ ECM
・ ECM Biomaterial


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Eclogite : ウィキペディア英語版
Eclogite

Eclogite is a mafic metamorphic rock. Eclogite forms at pressures greater than those typical of the crust of the Earth. An unusually dense rock, eclogite can play an important role in driving convection within the solid Earth.
The fresh rock can be striking in appearance, with red to pink garnet (almandine-pyrope) in a green matrix of sodium-rich pyroxene (omphacite). Accessory minerals include kyanite, rutile, quartz, lawsonite, coesite, amphibole, phengite, paragonite, zoisite, dolomite, corundum, and, rarely, diamond. Plagioclase is not stable in eclogite.
==Origins==
Eclogite typically results from high-pressure metamorphism of mafic igneous rock (typically basalt or gabbro) as it plunges into the mantle in a subduction zone. Such eclogites are generally formed from precursor mineral assemblages typical of blueschist-facies or amphibolite-facies metamorphism. Eclogite can also form from magmas that crystallize and cool within the mantle or lower crust.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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