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西藏4.1Ga碎屑锆石年龄的发现 被引量：28

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摘要 在西藏普兰县石英片岩中,利用SHRIMP U-Pb法测年发现4.1Ga碎屑锆石,该年龄为目前中国最老单颗粒碎屑锆石年龄,>4.0Ga两测点仅为一颗锆石中测得,其Th/U值介于0.76～0.86之间,属岩浆锆石.24颗锆石的35个测点的年龄值可分为六个年龄段,认为研究区可能至少存在六期古岩浆活动.这一发现,为研究青藏高原的地质演化提供了重要的年龄数据.
作者 多吉 温春齐 郭建慈 范小平 李小文
机构地区 西藏自治区地质矿产勘查开发局 成都理工大学
出处 《科学通报》 EI CAS CSCD 北大核心 2007年第1期19-22,共4页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:40472058) 国家重点基础研究发展计划(批准号:2002CB412600)
关键词 SHRIMP 碎屑锆石 4.1Ga 西藏
分类号 P597.3 [天文地球—地球化学]
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参考文献15

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二级参考文献77

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共引文献2149

同被引文献812

引证文献28

二级引证文献412

科学通报
2007年 第1期

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