阿尔金山东端花岗片麻岩中3.6Ga锆石的地质意义  

Dating of 3.6 Ga Zircons in Granite-Gneiss from the Eastern Altyn Mountains and Its Geological Significance

作　　者：李惠民[1] 陆松年[1] 郑健康 于海峰[1] 赵风清[1] 李怀坤[1] 左义成[1] 

机构地区：[1]中国地质调查局天津地质矿产研究所,天津300170 [2]青海地质勘查局,青海西宁810001

出　　处：《矿物岩石地球化学通报》2001年第4期259-262,共4页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国土资源部项目;中国地质调查局"九五"项目 ( 95 0 2 0 0 8和 1999130 0 0 130 31)研究成果

摘　　要：本文报道首次用单颗粒锆石U Pb同位素测年技术在我国西北阿尔金山东端古老花岗片麻岩中发现36 0 5± 43Ma的锆石。这是塔里木地块存在始太古代基底的重要证据 ,对研究该地区的地壳演化及其与我国东部和全球其他古老地块的对比研究具有重要的意义。zircons in granite-gneiss from the Eastern Altyn Mountains were dated by single grain zircon U-Pb dating method. The reliable zircon age of 3605 +/-43 Ma is the first convincing evidence for existence of an Early Archean basement in Tarim Block and has important significance for study of crustal and tectonic evolution in this area and comparative study with those in the Eastern China and the other places in the world.

关 键 词：阿尔金山 花岗片麻岩 3.6 GA 锆石 

分 类 号：P588.3[天文地球—岩石学]