...Therefore, the quenched marginal phase is seen where multiple dikes meet each other. (3) Ring dike: A group of cylindrical cracks that open downward in the surrounding rocks due to a decrease in pressure in a magma chamber, and magma intrudes into them. (4) Dike swarm: A group of many dikes arranged almost in parallel. ... *Some of the terminology that mentions "ring dike" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…したがって複数の岩脈が互いに接する部分には,急冷周縁相がみられる。(3)環状岩脈ring dike マグマだまりのなかの圧力が減少し,そのため周囲の岩石に下方に向かって開いた円筒形の割れ目群が生じ,そこにマグマが貫入したもの。(4)平行岩脈群dike swarm ほぼ平行に配列した多数の岩脈の群。… ※「ring dike」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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