| 论山东莱芜岩浆杂岩的多源成因 |
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| 引用本文： | 孟庆丽.论山东莱芜岩浆杂岩的多源成因[J].吉林大学学报(地球科学版),1988(1). |
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| 作者姓名： | 孟庆丽 |
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| 摘 要： | 本文通过对山东莱芜地区与铁矿有成因关系的莱芜杂岩所作的矿物学、岩石学、岩石化学及地球化学方面的分析和讨论,初步认为这套岩石虽然从早至晚是由基性至中性至中偏碱(酸)性岩石构成,但不是单一岩浆结晶分异的产物。它是由幔源岩浆先形成基性岩,然后由壳源岩浆对其作用形成中性岩,晚期富钠流体对中性岩作用形成中偏碱(酸)性岩,故它是多源岩浆形成的杂岩。
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| 关 键 词： | 岩浆杂岩 多源成因 莱芜地区 |
ON POLYGENE OF LAIWU MAGMATIC COMPLEX IN SHANDONG PROVINCE |
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| Meng Qingli.ON POLYGENE OF LAIWU MAGMATIC COMPLEX IN SHANDONG PROVINCE[J].Journal of Jilin Unviersity:Earth Science Edition,1988(1). |
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| Authors: | Meng Qingli |
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| Institution: | Meng Qingli |
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| Abstract: | The of Yanshanian Laiwu Complex in Shandong province is a composite intru-sive mass made up of plutons ranging from basic through intermediate to more alkaline based on their petrology and field geology, three phases are represented: (i)relict phase, (2)major phase, (3)additional phase.It is recognized that the basic rocks-gabbro, norite, were generated from a Fe-Mg-rich basaltic magma and the intermediate rocks were formed, through metasomatism of the basic rocks with a granitic magma, i, e. Fe, Mg, Ca were carried away from the basic rocks and Al,Si,Na from the acidic magma were introduced into them. The unaffected part of the basic rocks appear as relict phase and the affected part as the major phase; rocks of the major phase were affected by a Na-rich fluids then the additional phase was formed. fron can be transformed from iron silicate to iron oxide in the process and this was the major source of the iron deposits. |
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| Keywords: | magmatie complex polygene Laiwu area |
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