刀艳;李峰;吴静;王蓉;吕俊男;

• 1:昆明理工大学国土资源工程学院

摘要(Abstract)：

对滇西宝兴厂矿区复式岩体锆石进行了阴极发光(Cathodoluminescence)和激光探针等离子质谱(LA-ICP-MS)分析。结果显示锆石发育良好的振荡环带,且Th/U比值>0.1;大部分锆石REE含量极高,且HREE富集、LREE亏损、强烈的正Ce异常和轻微的负Eu异常,是典型的花岗岩岩浆锆石。锆石Hf同位素结果显示,εHf(t)值变化于-0.4~2.7,二阶段模式年龄(TDM2)介于0.83~1.00Ga,继承锆石年龄为0.93~1.54Ga,指示显著的壳幔混合过程:印度大陆壳与欧亚大陆壳碰撞俯冲,深部地幔岩浆上涌,造成新生代-中生代基底物质部分熔融,形成以壳源为主的壳-幔混源岩浆。

关键词(KeyWords)： 微量元素;Hf同位素;复式岩体;宝兴厂

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40872040);; 云南省科技厅自然科学基金项目(2011FZ035)

作者(Author): 刀艳;李峰;吴静;王蓉;吕俊男;

Email:

DOI:

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