| 内蒙古白乃庙铜多金属矿床成因问题讨论 |
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| 引用本文： | 赵泽霖,刘利双,宋雪龙,党智财,唐文龙,付超.内蒙古白乃庙铜多金属矿床成因问题讨论[J].地质找矿论丛,2015,30(4):492-498. |
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| 作者姓名： | 赵泽霖 刘利双 宋雪龙 党智财 唐文龙 付超 |
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| 作者单位： | 中国地质科学院研究生院, 北京 100037;中国地质科学院研究生院, 北京 100037;中国地质科学院研究生院, 北京 100037;中国地质科学院研究生院, 北京 100037;中国地质调查局天津地质调查中心, 天津 300170;中国地质调查局天津地质调查中心, 天津 300170 |
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| 基金项目： | 中国地质调查局地质调查项目(编号:1212010561510、1212011120330)、科技部公益性行业科研专项(编号:200811010)和国际科技合作项目(编号:2012DFB20220)联合资助。 |
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| 摘 要： | 文章综合分析了白乃庙铜多金属矿床的成矿地质背景、矿床地质特征,以及前人有关该矿床的年代学、成矿流体来源等多方面研究成果,并在此基础上讨论了该矿床的成因问题。白乃庙铜多金属矿床南北成矿带具有不同的成因机制,其中南矿带为幔源流体二次交代热液矿床,北矿带为斑岩型矿床。南矿化带具有2个矿化期,即矿化发生在中元古代(1 144~1 354Ma之间)和早古生代(420~450 Ma之间),而北矿化带的矿化发生在早古生代的加里东运动过程中。成矿物质来源方面,南矿带为幔源,而北矿带以壳源重融为主。矿化过程方面,南矿带初次矿化于中元古代的海相火山地层中,在加里东期的构造运动中发生绿片岩相变质作用并被拼贴到华北板块北缘,并在该期使原矿化元素受到第二次活化富集;北矿带发育在加里东期弧构造体制下形成的斑岩体内,由岩体内热液循环而成斑岩型矿床。
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| 关 键 词： | 白乃庙铜多金属矿 成矿年代 流体来源 矿床成因 内蒙古 |
| 收稿时间： | 2014/9/26 0:00:00 |
Genetic discussion about the Bainaimiao copper-polymetal deposit,Inner Mongolia |
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| ZHAO Zelin,LIU Lishuang,SONG Xuelong,DANG Zhicai,TANG Wenlong and FU Chao.Genetic discussion about the Bainaimiao copper-polymetal deposit,Inner Mongolia[J].Contributions to Geology and Mineral Resources Research,2015,30(4):492-498. |
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| Authors: | ZHAO Zelin LIU Lishuang SONG Xuelong DANG Zhicai TANG Wenlong and FU Chao |
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| Institution: | Graduate Department of Chinese Academy of Geological Sciences, Beijing 100037, China;Graduate Department of Chinese Academy of Geological Sciences, Beijing 100037, China;Graduate Department of Chinese Academy of Geological Sciences, Beijing 100037, China;Graduate Department of Chinese Academy of Geological Sciences, Beijing 100037, China;Tianjin Institute of Geology and Mineral Resources, China Geological Survey, Tianjin 300170, China;Tianjin Institute of Geology and Mineral Resources, China Geological Survey, Tianjin 300170, China |
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| Abstract: | The paper analyzes metallogenic and geological background, geological characteristics, data of the former chronologicy and ore material source of Bainaimiao copper-polymetal deposit. Based on the analysis genesis of the deposit is discussed. Genetically, the ore belt in south of the deposit differs from the ore belt in the north. In the south ore belt is the secondary replacement hydrothermal deposit but in the north ore belt porphyry deposit. There are two metallogenic periods in the south belt. The first is in interval of 1 144~1 354 Ma in the Middle Proterozoic era, the second 420~450 Ma in Early Paleozioic era. Mineralization in the north belt took place during the Early Paleozoic Caledonian movement. Ore materials of the the south belt are of mantle source. Ore materials of the north belt are dominated by the remelting crustal material. The primary mineralization in the south belt occurs in the Middle Proterozoic marine volcanic strata which were exposed to green schist facies metamorphism and collaged to north margin of the north China plate and contemporal seconary activation and enrichment of ore elements of the primary mineralization took place. Mineralization in the north belt occurs in porphyry body developed undere Caledonian arc regime belonging to porphyry deposit resulted from hydrohermal fluiid circulation. |
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| Keywords: | Bainaimiao copper polymetal deposit deposit genesis metallogenic age ore material source Inner Mongolia |
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