皖北地区地质矿物的地球化学特征及物源分析  

Geochemical characteristics and provenance analysis of geological minerals in Northern Anhui

作　　者：田晓莉[1] 黄澄 TIAN Xiao-li;HUANG Cheng(Anhui Institute of Geophysical and Geochemical Exploration Technology,Hefei 230022,China;Hefei Seismological Bureau,Hefei 230071,China)

机构地区：[1]安徽省地球物理地球化学勘查技术院,安徽合肥230022 [2]合肥市地震局,安徽合肥230071

出　　处：《世界有色金属》2021年第19期225-228,共4页World Nonferrous Metals

摘　　要：为探究皖北地区地质矿物的地球化学特征、物源和构造环境,对14件地质样品进行分析测试。结果表明:该区域的矿物物源经历强烈的风化作用,构造活动性较弱;LREE元素含量富集,HREE元素含量亏损,大离子亲石元素富集;综合样品的元素特征分析,认为矿物物源以石英质矿石为主,并且含有大量的古老沉积物,形成于被动大陆边缘环境,没有幔源物质的加入。In order to explore the geochemical characteristics,provenance and tectonic environment of geological minerals in Northern Anhui,14 geological samples were analyzed and tested.The results show that the mineral sources in this area have experienced strong weathering and weak tectonic activity;LREE element content is enriched,hree element content is deficient,and large ion lithophile element is enriched;Based on the analysis of the element characteristics of the samples,it is considered that the mineral source is mainly quartzite ore and contains a large number of ancient sediments,which was formed in the passive continental margin environment without the addition of mantle derived materials.

关 键 词：皖北 新元古代 四十里长山组 地球化学 物源分析 

分 类 号：P736.41[天文地球—海洋地质]