越城岭岩体稀土元素分带特征及其对岩体成因的指示意义  

REE Zoning Characteristics of Yuechengling Pluton and Its Significance to the Genesis of Rock Mass

作　　者：熊明伟 XIONG Ming-wei(Hunan Provincial Institute of Geophysical and Geochemical Survey,Changsha 410116,China;School of Earth Science and Spatial Information Engineering,Hunan University of Science and Technology,Xiangtan 411100,China)

机构地区：[1]湖南省地球物理地球化学调查所,湖南长沙410116 [2]湖南科技大学地球科学与空间信息工程学院,湖南湘潭411100

出　　处：《稀土》2024年第2期121-127,共7页Chinese Rare Earths

基　　金：湖南省级探矿权采矿权价款地质勘查项目(201203092)。

摘　　要：以《湖南省越城岭地区稀有稀散金属矿产调查评价》项目为依托,通过数据对比、图解分析等方法,对该区500余件岩石、土壤样进行统计,分析了不同岩相带、土壤垂直分带中稀土元素含量特征及配分模式,讨论了稀土元素对越城岭岩体成因的指示意义。研究结果表明,越城岭岩体各岩相带内稀土元素含量具有明显的差异性,且分带性明显;土壤中稀土相对岩石更富集;该区稀土元素曲线配分右倾;轻稀土相对重稀土较富集;普遍具Eu中等负异常;稀土元素特征指示该岩体具有重熔型花岗岩的特征。Based on the project “Investigation and Evaluation of Rare and Rare Metal Mineral Resources in the Yuechengling Area of Hunan Province”, more than 500 rock and soil samples in the area were statistically analyzed through data comparison, graphical analysis, and other methods. The content characteristics and distribution patterns of rare earth elements in different lithofacies zones and vertical soil zones were analyzed, and the indicative significance of rare earth elements on the genesis of the Yuechengling rock mass was discussed. The research results indicate that there are significant differences in the content of rare earth elements in various lithofacies zones of the Yuechengling rock mass, and the zoning is obvious;Rare earth elements are more abundant in soil compared to rocks;The distribution curve of rare earth elements in this area leans to the right;Light rare earth elements are relatively enriched compared to heavy;The Eu medium negative anomaly is common;The characteristics of rare earth elements indicate that the rock mass has the characteristics of remelted granite.

关 键 词：越城岭岩体 稀土元素 构造意义 

分 类 号：P595[天文地球—地球化学]