太古界，是地质学名词，属年代地层单位之一。 即太古代形成的地层。
adj. Archaeozoic
misc. archaean group
成矿物质主要来源于基底太古界变质岩系。
The metallogenic substance mainly comes from the Archeozoic metamorphic rock series in basement.
辽西高级变质区系指太古界底部小塔子沟组分布地区。
The high-grade metamorphic area is the Xiaotazhigou formation in the bottom of the distribution area of Archaean.
本区金矿化产于太古界结晶基底之上的中元古界熊耳群陆相火山岩中。
Gold mineralization in the study area is hosted in continental volcanic rocks of Middle Proterozoic, Xionger Group overlying the Archean crystalline basement.
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