V2EX xenolith

Xenolith

Definition / 定义

xenolith(名词)外来岩块;捕虏体。指在岩浆上升过程中被“撕下并裹挟”的异质岩石碎块,随后随着岩浆冷却固结,被保存于火成岩(如玄武岩)之中。(该词也可更广义指嵌在另一种岩石中的“外来”岩块。)

Pronunciation / 发音

/znlθ/

Examples / 例句

The basalt contains small xenoliths.
这块玄武岩里含有一些小的外来岩块(捕虏体)。

As the magma rose, it tore off fragments of older rock, preserving them as xenoliths in the cooled lava.
岩浆上升时撕扯下更古老的岩石碎片,并在冷却后的熔岩中将它们以捕虏体的形式保存下来。

Etymology / 词源

源自希腊语:xenos(“外来的、陌生的”)+ lithos(“石头”),字面意思就是“外来的石头”,很好地概括了其地质学含义。

Related Words / 相关词

Literary Works / 文学作品

  • John McPhee:《Annals of the Former World》(《前世界纪事》;地质非虚构写作中常涉及相关术语)
  • Marcia Bjornerud:《Timefulness: How Thinking Like a Geologist Can Help Save the World》(《时间感》;面向大众的地质学写作中会讨论岩石“夹带物/外来碎块”等概念)
  • Robert M. Hazen:《The Story of Earth: The First 4.5 Billion Years, from Stardust to Living Planet》(《地球的故事》;科普语境中常提及岩浆、地幔物质与相关岩石证据)
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