Archean是什么意思？

Archean

英[ɑ:ˈkiən] 美[ɑrˈkiən]

• adj. 太古代的；

例句

• The redelimited Jiapigou gold - concentrated area is composed of Archean granitoid - greenstone belts and high grade metamorphism areas. 重新界定的夹皮沟金矿集中区包括了太古宙花岗 - 绿岩带和高级变质区两个组成部分.
• Felsic gneiss is the most widely distributed rock type in Archean metamorphic complex areas. 长英质片麻岩是太古宙变质杂岩区最主要的岩石类型.

英英词典释义

• Adjective
  1. used of the earliest known rocks