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汉语拼音：tài gǔ zhòu

原称太古代”。地质历史中最早的一个时代。自40亿年前至25亿年前，持续时间约为15亿年。这一时期形成的地层称为太古宇。岩石主要为变质岩，如片麻岩、板岩等，中国主要分布在北方。该时期是一个重要的成矿期，形成的矿产很丰富。

• The Proterozoic climate was still warm and wet, but compared with that of the Archaeozoic Eon, the temperature fell a little.

  元古宙的气候仍是温暖而潮湿的，但较太古宙温度有所降低。

• The Houshiding Archean repeated fold within the Fuping domal composite fold group is located in the "hook" of a "hook-like" fold.

  猴石顶太古界重褶皱位于阜平太古宙穹状复合褶皱群中一个钩状褶皱的“钩子”部位。

• However, contrary to previous views, there is no isotopic evidence that Archaean rocks are present in the Mashan Complex.

  然而，与以前的认识相反，麻山杂岩不存在具有太古宙基底的同位素证据。

• Therefore , Mount Wutai is key evidence for studies of the Archean plate tectonics and the collision orogenic belts.

  是研究太古宙板块构造与碰撞造山带的关键例证

• As Archean not yet under construction and is still said, in the Pacific community.

  由于太古宙之下尚未建代，现仍称下、中、上太古界。

• Ore field lies in the greenstone belt of Archean, and it has the Xiao He fracture of south and Tai Yao fracture of north as its boundary.

  矿田处于太古宙绿岩带内，南北分别以小河断裂和太要断裂为界。

• The gold content of the Archean Taihua Group greenstone belt is lower than Clarke value.

  太古宙太华群绿岩带金的丰度低于克拉克值。

• Geochemical Characteristics of Archaean Basement in the Fushun--Qingyuan Area, Northern Liaoning Province and Its Geological Significance

  辽北抚顺-清原地区太古宙基底地球化学组成特征及其地质意义

• Determination of the Archaean-Proterozoic Boundary for the Metamorphic Rocks and the Transitional Tectonic Evolution in Southern Jilin

  吉林南部变质岩太古宙—元古宙分界时限的确定及过渡性构造演化