…This is the result of crystals that have crystallized from magma accumulating at the bottom, and is called rhythmic layering. An intrusive igneous rock body with this type of layering is called a layered intrusive body. The crystals that have accumulated at the bottom of the rock body are called cumulus minerals, and the liquid that fills the gaps between the cumulus minerals is called intercumulus liquid. The intercumulus liquid eventually crystallizes as it reacts with the minerals it comes into contact with. … *Some of the terminology that mentions "cumulus mineral" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これはマグマから晶出した結晶が底に集積してできるもので,リズミック・レーアリングrhythmic layering(周期的成層構造)と呼ばれ,このようなレーアリングの発達した貫入火成岩体を層状貫入岩体という。岩体の下部に集積した結晶を集積鉱物cumulus mineralと呼び,集積鉱物の間隙を満たしている液体を間隙液intercumulus liquidという。間隙液は,結局は,それと接する鉱物と反応しながら結晶化する。… ※「cumulus mineral」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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