…Rhythmic layering is often observed in rocks. This is caused by the accumulation of crystals from magma at the bottom, and is called rhythmic layering. An intrusive igneous rock body with such layering is called a layered intrusive body. The crystals accumulated at the bottom of the rock body are called cumulus minerals, and the liquid that fills the gaps between the accumulated minerals is called intercumulus liquid. *Some of the terminology that mentions "rhythmic layering" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…岩体には明暗の縞状構造がよく発達する。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。… ※「rhythmic layering」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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