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桂东南富钾岩浆岩岩的Nd同位素组成：华南中生代地幔物质上涌事件

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文章导航 > 岩石学报 > 2001 > 17(1): 19-27

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郭新生 汤加富 等. 桂东南富钾岩浆岩岩的Nd同位素组成：华南中生代地幔物质上涌事件[J]. 岩石学报, 2001, 17(1): 19-27.
引用本文: 郭新生 汤加富 等. 桂东南富钾岩浆岩岩的Nd同位素组成：华南中生代地幔物质上涌事件[J]. 岩石学报, 2001, 17(1): 19-27.
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GUO XinSheng,CHEN JiangFeng,ZHANG Xun,TANG JiaFu,XIE Zhi,ZHOU TaiXi and LIU YuLong. 1. Laboratory for Chemical Geodynamics,Department of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China,2. Geological Sur. Nd isotopic ratios of K-enriched magmatic complexes from southeastern Guangxi province: Implications for upwelling of the mantle in southeastern China during the Mesozoic.[J]. Acta Petrologica Sinica, 2001, 17(1): 19-27.
Citation: GUO XinSheng,CHEN JiangFeng,ZHANG Xun,TANG JiaFu,XIE Zhi,ZHOU TaiXi and LIU YuLong. 1. Laboratory for Chemical Geodynamics,Department of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China,2. Geological Sur. Nd isotopic ratios of K-enriched magmatic complexes from southeastern Guangxi province: Implications for upwelling of the mantle in southeastern China during the Mesozoic.[J]. Acta Petrologica Sinica, 2001, 17(1): 19-27.
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桂东南富钾岩浆岩岩的Nd同位素组成：华南中生代地幔物质上涌事件

    • [1]中国科学技术大学地球和空间科学系化学地球动力学研究实验室，合肥230026 [2]安徽省地质调查院，合肥230001

  • 基金项目:

    国家自然科学基金(49773178)资助项目.

Nd isotopic ratios of K-enriched magmatic complexes from southeastern Guangxi province: Implications for upwelling of the mantle in southeastern China during the Mesozoic.

    摘要
  • 广西东南部罗容杂岩体由辉长岩－闪长岩－二长岩－正长岩组成，马山由碱性辉长岩－正长岩－花岗闪长岩－花岗岩组成。它们富K、富大离子亲石元素（LIL），无Nb、Ta负异常等特征表明它们是形成于板内环境的钾玄质侵入岩。罗容杂岩体的各种岩石和马山的基性岩的εNd(T)稍低，为－0．6，此岩石单元是由幔源岩浆加热地壳使之熔融的壳源岩浆形成的，并伴有幔源岩浆的混合或交换。此二杂岩体形成于拉张构造环境。地幔物质上涌导致了中生代华南地壳张裂以及华南大规模花岗岩和相关矿床的形成。
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修回日期:  2000-08-21
刊出日期:  2001-02-28

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