峨眉山二滩高钛玄武岩Zr/Hf分异的指示意义
Implications of Zr/Hf Fractionation in the Ertan High-Ti Basalt
查看参考文献57篇
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文摘
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对峨眉山二滩高钛玄武岩高场强元素的研究表明, Zr/Hf比值出现了明显分异, 可分为高Zr/Hf组和低 Zr/Hf组两组玄武岩. Zr/Hf比值的分异与岩浆结晶分异作用无关, 而是由部分熔融和地幔源区的不同所导致, 暗示高Zr/Hf组和低Zr/Hf组玄武岩分别具有不同的部分熔融条件和不同的地幔物质组分 |
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其他语种文摘
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Variations of high-field strength element(HFSE)of the Ertan high-Ti basalts in the Emeishan suggest that Zr/Hf ratios were fractionated. According to the fractionation, the Ertan high-Ti basalts can be devided into high Zr/Hf group and low Zr/Hf group based on Zr/Hf ratios. The fractionation of Zr/Hf is not related with crystallization of basaltic magmas but partial melting and distinct compositions of mantle. This implies that high Zr/Hf basalt and low Zr/Hf basalt possessed distinct compositions of mantle and underwent different surroundings of partial melting, respectively |
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来源
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矿物学报
,2011,31(1):36-42 【核心库】
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关键词
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高钛玄武岩
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高场强元素
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部分熔融
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不均一性
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地址
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1.
中国科学院地球化学研究所, 矿床地球化学国家重点实验室, 贵州, 贵阳, 550002
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重庆地质矿产研究院, 重庆, 400042
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重庆大学资源与环境学院, 重庆, 400030
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-4734 |
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学科
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地质学 |
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基金
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贵州省项目
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文献收藏号
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CSCD:4173020
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