V2EX dacite

Dacite

释义 Definition

英安岩:一种中性酸性火山岩,化学成分与安山岩和流纹岩之间相近,通常富含斜长石与石英,常见于弧前/岛弧等与俯冲有关的火山活动环境。(该词也可指“英安岩质的”。)

发音 Pronunciation

/desat/

例句 Examples

Dacite is common in volcanic arcs.
英安岩在火山弧地区很常见。

The eruption produced a dacite lava dome, whose high viscosity helped trap gases and increased explosivity.
这次喷发形成了英安岩熔岩穹丘;由于其高黏度更容易困住气体,从而增强了爆炸性。

词源 Etymology

dacite 来自地名 Dacia(达契亚,古罗马时期对今罗马尼亚一带的称呼),加上岩石名常见后缀 -ite(表示“某种矿物/岩石”)。该名称最早用于描述与该地区相关、具有特定成分特征的一类火山岩,后来成为岩石学中的标准术语。

相关词 Related Words

文学与著作 Literary Works

  • Igneous Rocks: A Classification and Glossary of Terms(Le Maitre 等,IUGS 分类相关著作)中用于火成岩分类与命名(含 dacite)。
  • Principles of Igneous and Metamorphic Petrology(John D. Winter)中讨论英安岩的成因、矿物组合与构造环境。
  • Volcanoes(Peter Francis & Clive Oppenheimer)中在火山喷发类型、熔岩黏度与穹丘形成的语境下提及 dacite。
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