V2EX troctolite

Troctolite

释义 Definition

troctolite(岩石学):一种深成(侵入)基性火成岩,主要由富钙斜长石(plagioclase)橄榄石(olivine)组成,通常几乎不含或只含很少辉石(pyroxene)。常被视为辉长岩(gabbro)的一种变体。

发音 Pronunciation (IPA)

/trk.t.lat/

例句 Examples

Troctolite is rich in olivine and plagioclase.
橄榄岩辉长岩富含橄榄石和斜长石。

The field team mapped a troctolite layer that helped explain the region’s magmatic history.
野外小组绘制了一层橄榄岩辉长岩的分布,这有助于解释该地区的岩浆演化历史。

词源 Etymology

troctolite来自19世纪地质学命名,源于希腊语trōktēs(意为“鳟鱼”,与“啃咬/咬噬”相关的词根有关),用来形容这种岩石常见的斑点状外观(让人联想到鳟鱼身上的斑点);后缀 -lite 常用于岩石名称,表示“石/岩”。

相关词 Related Words

文学与典籍 Literary Works

  • Igneous Rocks: A Classification and Glossary of Terms(Le Maitre 等,IUGS 相关分类与术语书):用于火成岩命名与分类时会出现该词。
  • The Encyclopedia of Igneous and Metamorphic Petrology(百科类岩石学参考书):在基性超基性侵入岩条目中常见 troctolite
  • The Geology of North America(GSA《北美地质》系列卷):在讨论大型岩基、层状侵入体(如相关地区的基性岩层)时可能出现该词。
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