| 辽河群几种主要变质岩地球化学特征 |
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| 引用本文： | 李星云,张丽华.辽河群几种主要变质岩地球化学特征[J].国土资源,1990(3). |
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| 作者姓名： | 李星云 张丽华 |
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| 作者单位： | 辽宁省地质矿产局区域地质调查队 大连 |
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| 摘 要： | 辽河群主要由石英片岩,板岩-千枚岩、浅粒岩-变粒岩、斜长片麻岩组成。其中石英片岩、板岩-千枚岩和斜长片麻岩具有Si、Al,K相对偏高的特点,为Au、Pb、Zn、Ag、F等元素的主要荷载岩石。浅粒岩-变粒岩富集B、As、S、Zr、La、Pb、Ag、Ba等元素,为B的矿源体。这几种岩石稀土元素组成具有变质沉积岩的稀土分配特征。片岩、浅粒岩和变粒岩的原岩,主体为沉积岩,个别为火山岩,前者主要来源于大陆上部地壳;后者属上地幔或接近于大陆溢流玄武岩的物质经部分熔融的产物。其微量元素均可分为二大群,组合形式多不相同。
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| 关 键 词： | 辽河群 石英片岩 板岩-千枚岩 斜长片麻岩 浅粒岩-变粒岩 地球化学 |
GEOCHEMICAL FEATURES OF SOME MAJOR METAMORPHOC ROCKS IN LIAOHE GROUP |
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| Li Xingyun, Zhang Lihua,.GEOCHEMICAL FEATURES OF SOME MAJOR METAMORPHOC ROCKS IN LIAOHE GROUP[J].Land & Resources,1990(3). |
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| Authors: | Li Xingyun Zhang Lihua |
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| Abstract: | Liaohe Group mainly consists of quartz-schist, slate-phyllite, leptite-leptynite, plagioclase-gneiss, the third is rich in B, As, S, Zr, La, Pb, Ag, Ba, which is B source body, the others have the character of Si, AI, K-rich and they are main carrier rocks of Au, Pb, Zn, Ag,F. These rare earth elements composition have the REE distribution characters of metasedimentary rocks. The original rocks of schist,leptite and leptynite mainly are sedimentary rocks, very few are volcanic rocks. The former mainly comes from continental upper-crust; the latter is the product of partly-melting effusive basalt from upper-mantle and near continent. Their trace elements can be divided into two group, which the constitute forms are different. |
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| Keywords: | Liaohe Group Quartz-schist Slate-phyllite Plagioclase-gneiss Leptite-leptynite Geochemistry |
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