铁克里克炭系沉积岩地球化学特征与构造背景分析  

Geochemical Characteristics of Carboniferous Sedimentary Rocks and Tectonic Setting Discrimination in Tiekelik

作　　者：努尔喀纳提.马达依普 郭瑞清[1] 帕拉提.阿布都卡迪尔 胡雪原[1] 郭羽[1] Nurkanati MADAYIPU GUO Rui-qing Palati ABUDUKADIER HU Xue-yuan GUO Yu(School of Geology and Mining Engineering, Xinjiang University, Urumqi 830047, Chin)

机构地区：[1]新疆大学地质与矿业工程学院,乌鲁木齐830047

出　　处：《煤炭技术》2017年第5期123-125,共3页Coal Technology

基　　金：中国地质科学院地质研究所课题(212-61717)

摘　　要：对采自铁克里克断隆布雅地区石炭系地层的变质中细粒岩屑石英砂岩样品中微量元素和稀土元素进行了测试与分析,其结果显示这些砂岩样品具有Rb、Th、Ce、Nd、Zr等元素富集,Ba和Sr亏损,稀土元素总量较高,且负Eu异常和轻重稀土分异明显等壳源物质的特征。应用La-ThSc和Th-Sc-Zr/10构造环境判别图分析,说明铁克里克断隆布雅地区石炭纪沉积岩物源区主要以大陆岛弧构造背景为主,同时也存在类似被动大陆边缘构造背景。Sandstone samples collected from the Carboniferous rocks in the Tiekelik Buya area,Tarim, were analyzed for trace element and rare earth concentrations.The result shows that these samples were originated continental crust because they enriched in Rb, Th, Ce, Nd, Zr and high REE contents and depleted in Ba and St. Negative Eu anomalies and strong different- iation between heavy and light REE are significant.The tectonic setting of sedimentary provinces of the Tiekelik Buya area is classified asmainly continental island are,with some similarities to passive continental margin environment,based on La-Th-Se,Th-Sc-Zr/10 discrimination plots.

关 键 词：砂岩 微量元素 稀土元素 构造背景 

分 类 号：P595[天文地球—地球化学]