Archaean

The Archaean and Katarchaean units are preserved mainly as relic masses.

太古界與遠太古界主要作為殘余體保存下來.

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This type of graphite deposits were formend in the Late Archaean to Early Proterozoic.

該類礦床的成礦時代多集中在晚太古代末至早元古代初期,并且具有全球性.

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Archaean era granulite facies metamorphite series are extensively outcropped in Sa - heqiao, Hebei province.

冀東遷西灑河橋是太古代麻粒巖相變質巖系廣泛出露的地區.

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But simulation rock composition of the Archaean can form granite if partial melting grade is high.

模擬的太古代巖系巖石化學成分經高程度的部分熔融作用可以形成老灣花崗巖.

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The results indicate that the composition of post _ Archaean sedimentary rocks of NCC is not uniform.

結果表明,華北克拉通后太古宙沉積巖組成并不均一.

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