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单词 troctolite
释义

troctolite

/ˈtrɒktə(ʊ)lʌɪt /
noun [mass noun] Geology
Gabbro made up mainly of olivine and calcic plagioclase, often having a spotted appearance likened to a trout’s back.There is some grain size reduction of the troctolite adjacent to the anorthosite, indicating a chilling effect....
  • Metasomatic anorthosite formed by replacement of layered gabbroic troctolite in the Skaergaard intrusion is shown here.
  • Similar advantages in melt behaviour are also achieved by using troctolite as the iron and magnesium source rather than traditional materials.

Origin

Late 19th century: from German Troklotit, from Greek trōktēs, a marine fish (taken to be ‘trout’).

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更新时间:2025/3/23 9:39:34