| 内蒙古东升庙硫多金属矿床地质特征 |
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| 引用本文：江晓庆.1993.内蒙古东升庙硫多金属矿床地质特征[J].地球学报,14(2):103-115. |
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| 中文摘要:狼山群第1岩组混合岩的产生可能是火山活动的结果,而不是断裂活动或区域变质作用的结果。一些证据表明,所谓“变钠长斑岩”实际上是变英安流纹岩。围岩蚀变类型较多而且复杂,主要有硅化、滑石化、黑云母化和白云岩化。狼山群第2岩组底部的石英岩是硅化作用的产物。同生断层是导致地层的划分对比工作非常困难的原因。狼山群的变质温度和变质压力分别是300℃和119×106Pa。矿石中的“交代结构”形成于成岩期。铜矿体的线性分布特征可能暗示着同生断层的存在。 |
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| THE GEOLOGICAL CHARACTERISTICS OF DONGSHENGMIAO PYRITE-POLYMETALLIC SULFTDE DEPOSIT, INNER MONGOLIA |
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| Abstract:The mixed rock occurring in the first formation of the Langshan Group is probably the result of volcanic activity rather than that of faulting or metamorphism. Evidences show that the so-called " meta- albilite" is actually meta-dacite-liparite. Alterations of country rocks are complicated and multiple, and mainly are silicification, talcization,biot-itization and dolomitization. Quartzite at the bottom of the second formation of the Langshan Group is the result of silicification. Syngenetic faults may be the cause that makes it extremely difficult to divide and compare the strata in the ore area. The metamoTphic temperature and metamorphic pressure of the Langshan Group are 300℃ and less than 119× 106Pa respectively. Various " metasomatic textures" of ores were formed in diagentic stage. The linear shape of Cu ore-bodies may imply the existence of syngenetic faults. |
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