鄂西南双河渔塘坝硒矿区硅质岩地球化学特征
The geochemistry of chert from yutangba selenium digging in shuanghe, hubei province
查看参考文献16篇
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文摘
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双河渔塘坝硒矿位于扬子准地台、上扬子台褶带的北部，受双河向斜构造控制。本区硅质岩的稀土元素特征表明：稀土总量低，其平均值为38.945*10~(-6)，富集轻稀土元素，呈现负的Ce异常和正的Eu异常，表现出一定的热水成因的属性。说明本区含硒的硅质岩主要形成于浅海滞留盆地、缺氧的还原环境，是属于热水成因的一类硅质岩。 |
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其他语种文摘
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This digging is located in supper-Yangtze fold belt of north of Yangtze platform ad controlled by Shuanghe syncline. The content of REE of chert are low, average aboudance is 38.945*10~(-6). Comparative speaking, it is rich in LREE and has Ce negative anomaly and Eu positive anomaly. All the evidences show a character of hot water genesis. It is suggested that the Se-bearing chert in this region was formed in arrested basin of shallow sea, under a reduction environment. |
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来源
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吉林大学学报. 地球科学版
,2002,32(1):21-25 【核心库】
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关键词
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渔塘坝
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硅质岩
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地球化学特征
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地址
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中科院贵阳地球化学所, 贵州, 贵阳, 550002
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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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1671-5888 |
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学科
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地质学 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:1022307
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