(LREEs)亏损的特征，且LREEs是球粒陨石的2—5倍， 重稀土元素 (HREEs)是球粒陨石的1O 倍左右，总体上与位于66．510N．17．34唧的大西洋中脊玄武岩的稀土元素特征f】983，
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...素剖面研究表明,在大陆俯冲带变质过程中,大离子亲石元素(LILE)和轻稀土(LREE)具有较高的活动性,而高场强元素(HFSE)和重稀土(HREE)是不活动的.这些元素的活动可能是由折返过程中大陆地壳的部分熔融导致的,因此指示了超临界流体的出现.
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hree-way union 三通管接头
The results show that the LREE patterns are affected by temperature, and the MREE and HREE patterns are controlled by ionic radius.
结果表明：矿区萤石中LREE的配分模式主要受温度影响，而MREE、HREE主要受离子半径控制。
With the ages becoming younger of the basalts, their alkali, the fractional degree of LREE/ HREE and incompatible elements enrichment increased.
随着时代变新，玄武岩碱性逐渐增强，轻、重稀土元素分离程度及不相容元素富集程度也逐渐增强。
It is concluded that the half-weathered basalts have not distinct REE fractionation and strong weathered basalts had HREE loss in the process of the basalts weathered to form smectite family minerals.
研究表明玄武岩首先风化形成蒙皂石族粘土矿物，在此过程中稀土元素没有明显的分馏作用，强风化的玄武岩重稀土元素强烈亏损；
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