原岩の記事

Schematic representation of a metamorphic reaction. Abbreviations of minerals: act = actinolite; chl = chlorite; ep = epidote; gt = garnet; hbl = hornblende; plag = plagioclase. Two minerals represented in the figure do not participate in the reaction, they can be quartz and K-feldspar. This reaction takes place in nature when a mafic rock goes from amphibolite facies to greenschist facies.

変成作用のメカニズムと岩石の分類地球内部で起こる物質の変容

変成作用原岩変成相広域変成作用

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Quartzite, a type of metamorphic rock

変成岩の成り立ちと特徴地球内部のダイナミズムが創り出す岩石

変成岩変成作用原岩片岩

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