山东国土资源2016，Vol.32Issue(8)：1-7,7.
东昆仑东段坑德地区侵入岩岩石地球化学特征及其构造意义
Geochemical Characteristics and Tectonic Significance of Intrusive Rocks in Kengde Area in Eastern Kunlun Orogenic Belt
摘要
Abstract
Detailed geochemical study has been carried out on intrusive rocks outcropeed in Kengde area in eastern Kunlun orogenic belt. It is showed that intrusive rocks in Kengde area is high potassium alkaline granodiorite. The rocks are transferred from metaluminous to weak peraluminous. Rare earth elements have the characteristics of rich LREE , low HREE and weak negative Eu anomaly. Trace elements are obviously enriched in large ion lithophile ele⁃ments (RB, Ba, K) and lively incompatible elements(Th, u); As showed by relatively depleted in high field strength elements, such as Nb, Ti, P, Rb / Sr and Nb / Ta, Zr / HF, rocks have the characteristics of mixed crust and mantle. Rocks have the characteristics of active continental margin tectonic environment before plate sub⁃duction and collision. It should be formed by crust mantle magma mixing during the period of Animaqing ocean northward subduction and collision.关键词
东昆仑/侵入岩/坑德地区/早三叠世Key words
Eastern Kunlun/intrusive rocks/Kengde area/early period of Triassic分类
天文与地球科学引用本文复制引用
刘卫东..东昆仑东段坑德地区侵入岩岩石地球化学特征及其构造意义[J].山东国土资源,2016,32(8):1-7,7.基金项目
青海省国土资源厅，青海省金星矿业公司有限公司公益性区域地质矿产调查基金项目 （）
