Yanshanian Period

英 美
  • 燕山期
  • period n.一段时间;周期;时期;课时;学时;句号;月经
  • Yanshanian 燕山期
    1. The volcanic rocks of Yanshan Period have features of the mantle source.
      燕山期火山岩具备幔源特征。
    2. The Yanshanian ductile shearing resulted in further enrichment of gold and antimony.
      燕山期叠加的脆性变形使金锑矿进一步富集。