| 华北地台南缘中元古代官道口群热水沉积硅质岩的地球化学特征 |
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| 引用本文： | 魏俊浩,王思源,吕国芳,潘振祥,马旭东. 华北地台南缘中元古代官道口群热水沉积硅质岩的地球化学特征[J]. 地球科学, 1996, 0(1) |
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| 作者姓名： | 魏俊浩 王思源 吕国芳 潘振祥 马旭东 |
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| 作者单位： | 资源学院，河南地质研究所 |
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| 摘 要： | 在简要介绍了硅质岩基本地质特征的基础上，详细讨论了该套硅质岩的常量元素、微量元素以及氧同位素化学成分及组成．研究表明，该套硅质岩富集了与热水成因有关的Ａｇ、Ａｓ、Ｃｒ、Ｐｂ、Ｚｎ、Ｃｕ、Ｂ、Ｓｂ等微量元素和ＣａＯ、ＦｅＯ、Ｆｅ２Ｏ３等氧化物中常量元素，贫化了ＴｉＯ２、Ａｌ２Ｏ３、ＭｎＯ等氧化物中的常量元素．氧同位素组成及利用氧同位素估算的硅质岩的形成温度，均反映了热水沉积成因的特点
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| 关 键 词： | 热水沉积，硅质岩，常量元素，微量元素，氧同位素 |
GEOCHEMICAL FEATURES OF THERMAL WATER DEPOSIT SILICALITES FROM GUANDAOKOU GROUP OF MIDDLE PROTEROZOIC IN THE SOUTHERN MARGIN OF NORTH CHINA PLATFORM |
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| Wei Junhao Wang Siyuan. GEOCHEMICAL FEATURES OF THERMAL WATER DEPOSIT SILICALITES FROM GUANDAOKOU GROUP OF MIDDLE PROTEROZOIC IN THE SOUTHERN MARGIN OF NORTH CHINA PLATFORM[J]. Earth Science-Journal of China University of Geosciences, 1996, 0(1) |
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| Authors: | Wei Junhao Wang Siyuan |
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| Abstract: | On the basis of geological occurrence of silicalites,the chemical compositions of oxygen isotopes,trace elements and major elements of silicalite are discussed in detail.It exphains that silicalite possesses rich trace elements:Ag,As,Cr,Pb,Zn,Cu,B,Sb and major elements:CaO,FeO,Fe 2O 3,but lacks major elements:Al 2O 3,TiO 2,MnO Which can be relative to the origin of thermal water deposition.Oxygen isotope constitution and the silicalite formation temperature estimated by oxygen isotope present the features of thermal water deposition origin. |
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| Keywords: | thermal water deposition silicalite major element trace element Oxygen isotope. |
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