西北地质2018，Vol.51Issue(1)：77-87,11.
西昆仑精尼克盖曼南岩体年代学、地球化学特征及其地质意义
Geochronology, Geochemistry and Geological Implication of Jinnikegaiman Pluton in Western Kunlun
摘要
Abstract
The lithology of Jinnikegaiman pluton is mid-fine grained monzonitic granite.The zircon U-Pb dating indicate that the age of monzonitic granite is (516.5±0.8) Ma,belongs to Early Cambrian.This monzonitic granite belongs to aluminous-peraluminous granite of calc-al-kaline series.It is enriched in light rare earth element,with obvious fractionation between LREE and HREE.It has slight negative Eu anomaly,which is enriched in Rb,K and other large-ion lithophile elements,with depletion of high field strength elements,such as Nb,Ta,P,Ti and HREE.It was derived from lower crust and formed by the melting of igneous rock.According to the zircon U-Pb dating and regional geological background,it's believed that this pluton was formed in the environment of rift valley of Post-COLG and the west Kunlun has experienced a Post-COLG extension environment in Early Cambrian.关键词
西昆仑/寒武纪/年代学/地球化学Key words
west kunlun/Cambrian/geochronology/geochemistry分类
天文与地球科学引用本文复制引用
汤鸿伟,康孔跃,杨伟,张杰..西昆仑精尼克盖曼南岩体年代学、地球化学特征及其地质意义[J].西北地质,2018,51(1):77-87,11.基金项目
中国地质调查局“1∶5万区域地质调查”项目(1212011220630)资助 （1212011220630）
