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五台山变质杂岩中的新太古代变质基性岩主要由变质辉长岩、绿泥石片岩及角闪岩组成。根据稀土配分模式可以把它们分为三组:第一组具有平坦的稀土配分型式,稀土总量比较低(29×10-6~52×10-6),显示弱的Eu负异常及无异常(EuN/EuN=0.84~1.02),轻稀土略有亏损到弱富集(LaN/YbN=0.86
The new Archean metamorphic basement rocks in the Wutaishan metamorphic complex are mainly composed of metamorphic gabbro, chlorite schist and amphibolite. According to REE patterns, they can be divided into three groups: the first group has a flat rare earth compounding pattern with relatively low total RE (29 × 10-6 ~ 52 × 10-6), showing weak Eu negative anomalies and no abnormalities (EuN / EuN = 0.84 ~ 1.02), slight depletion of light rare earth to weak enrichment (LaN / YbN = 0.86