环状岩脉

环状岩脉，或称为环状岩墙（Ring dike或Ring dyke），是地质学上一种侵入火成岩体。它的化学、岩石学、外表状态和岩脉或岩床相同，但却是绕着火山活动区域中心呈现同心圆或径向分布，这代表它是次火山活动形成的。

单词	Ring dike
释义	Ring dike 中文百科环状岩脉环状岩脉，或称为环状岩墙（Ring dike或Ring dyke），是地质学上一种侵入火成岩体。它的化学、岩石学、外表状态和岩脉或岩床相同，但却是绕着火山活动区域中心呈现同心圆或径向分布，这代表它是次火山活动形成的。英语百科 Ring dike 环状岩脉 A ring dike or ring dyke is an intrusive igneous body that is circular, oval or arcuate in plan and has steep contacts. While the widths of ring dikes differ, they can be up to several thousand meters. The most commonly accepted method of ring dike formation is directly related to collapse calderas.
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Ring dike