| 安徽省铜陵地区侵入岩成因的实验研究 |
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| 引用本文： | 邢凤鸣,赵斌,徐祥,朱成明,赵劲松,蔡恩照.安徽省铜陵地区侵入岩成因的实验研究[J].地质通报,1997(3). |
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| 作者姓名： | 邢凤鸣 赵斌 徐祥 朱成明 赵劲松 蔡恩照 |
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| 作者单位： | 安徽省地质科学研究所，中国科学院广州地球化学研究所，中国科学院贵阳地球化学研究所 |
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| 基金项目： | 国家“八五”科技攻关课题,,安徽省“八五”科技攻关课题,《安徽沿江地区岩浆作用与构造—成岩—成矿模式研究》资助 |
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| 摘 要： | 通过３７次成岩实验研究认为：（１）在地壳温度下，地壳物质的重熔不可能形成石英闪长质或更基性的岩浆；（２）碱性玄武岩浆同化花岗质地壳，可以生成石英闪长质和花岗闪长质岩浆，所产生的岩浆高钾富碱，属高钾岩系，与铜陵地区侵入岩相似；（３）高压下形成的岩浆比中压下形成的岩浆更高钾富碱；（４）在岩浆演化过程中铜与钾似无成因联系，钾与铜的“相关性”与它们的趋同性有关，即两者均于岩浆晚期富集。
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| 关 键 词： | 成岩实验 侵入岩 安徽铜陵 |
GEOLOGY AND GEOCHEMISTRY OF THE SHUIQUANGOU WEAKLY-ALKALINE COMPLEX OF NORTHERN HEBEI AND ITS TECTONIC ENVIRONMENT |
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| Zhang Zhaochong.GEOLOGY AND GEOCHEMISTRY OF THE SHUIQUANGOU WEAKLY-ALKALINE COMPLEX OF NORTHERN HEBEI AND ITS TECTONIC ENVIRONMENT[J].Geologcal Bulletin OF China,1997(3). |
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| Authors: | Zhang Zhaochong |
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| Abstract: | The Shuiquangou pluton in the Chongli Chicheng area, northern Hebei, is a potassic to high potassic complex consisting of calc alkaline, weakly alkaline and alkaline rocks, characterized by enrichment in alkaline, subaluminium, low Ca and Ti. REE, trace element and isotope geochemistry indicates that the complex originated near the boundary between the upper mantle and lower crust. Most data are plotted in the field of the volcanic arc on various geochemical tectonic discrimination diagrams. Study on the emplacement mechanism for the complex implies that it was generated under the tensional tectonic environment. On the basis of the isotope ages, it is considered that the complex was formed in the period of stress relaxation after the collision between the Siberian and Sino Korean plates. |
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| Keywords: | subalkaline complex geology geochemistry tectonic environment Shuiquangou |
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