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本文系统阐述了赣南地区的龙南及全南不同岩性花岗岩风化壳中稀土元素的分布情况,通过利用其稀土元素表征参数计算结果及球粒陨石标准化型式,研究得出风化壳自上而下剖面(不包括基岩)总体为LREE富集,HREE亏损,存在明显的Ce、Eu异常,Y含量的比值主要取决于基岩,各层REE分布情况显示出了一种原岩的继承性,REE在花岗岩原岩中的含量、分布模式及赋存状态,主要稀土矿物的抗风化能力,风化淋滤的强度,在一定程度上控制着REE在风化壳中的富集和分异,并在文末初步探讨了其稀土元素的演化与岩石成因。
This paper systematically expounds the distribution of rare earth elements in the weathering crusts of different lithology granites in the southern and southern parts of southern Jiangxi. By using the calculation results of their rare earth element characterization parameters and the normalized types of chondrules, The profiles (excluding basement rocks) are generally enriched in LREE and depleted in HREE, with obvious Ce and Eu anomalies. The ratio of Y content is mainly determined by bedrock. The distribution of REE in each layer shows a succession of original rocks, The content, distribution pattern and occurrence of REE in granite primary rocks, the anti-weathering ability of main rare earth minerals and the intensity of leaching and erosion control the enrichment and differentiation of REE in weathering crust to a certain extent, At the end of the article, the evolution of rare earth elements and the genesis of rocks are discussed.