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yanshanian

释义 燕山期;

例句:

  • Its heat reservoir is composed of Yanshanian granite - porphyry and tuff of Mesozoic.
    热储由中生代燕山期花岗斑岩、凝灰岩组成.
  • Yanshanian strongly peraluminous intrusive rocks occur sporadically in the Hebei - Shanxi - Liaoning area.
    燕山期强过铝质侵入岩零星出露于 冀晋 辽地区.
  • The ore bodies are confined to Yanshanian metamorphosed rhyolite porphyry and felsite.
    矿体赋存在燕山期变质流纹斑岩、霏细岩中.