| 华北古大陆南缘的金属成矿作用 |
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| 引用本文： | 张正伟,翟裕生,邓军,朱炳泉,林潜龙.华北古大陆南缘的金属成矿作用[J].地球学报,2001,22(2):129-134. |
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| 作者姓名： | 张正伟 翟裕生 邓军 朱炳泉 林潜龙 |
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| 作者单位： | 中国科学院广州地球化学研究所;中国地质大学,北京;中国地质大学,北京;中国科学院广州地球化学研究所;河南省地质科学研究所,郑州 |
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| 基金项目： | 国家自然科学基金(编号40072033)，国家攀登计划(编号95预25)，国土资源部项目(编号9501107) |
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| 摘 要： | 东秦岭大部分金属矿床集中分布于华北古大陆南部边缘，以陆缘构造发展阶段的赋矿沉积建造和岩石组合划分成矿系统；前长城纪陆核活动性边缘沉积成矿系统；中、新元古代被动大陆边缘成矿系统；早加里东期构造体制转换期成矿系统；中生代陆内碰撞造山成矿系统，按矿床形成作用方式可以划分为：（1）构造-岩浆-流体成矿作用，主要以洛南-栾川钼（钨）多金属斑岩组合成矿系统为主，成岩方式为壳幔同熔的燕山期中酸性岩浆的浅成侵入与定位；（2）构造-建造-流体成矿作用，按不同构造作用层次再细分为中深层次的构造作用（主要形成韧性剪切带型矿床）、浅层次构造作用（主要形成构造蚀变岩型矿床）。主要的成矿作用发生在燕山期。
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| 关 键 词： | 金属矿床 成矿作用 古大陆边缘 地球化学急变带 东秦岭 |
Metallogenic Process in the Southern Margin of North China Paleocontinent |
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| ZHANG Zheng-wei,ZHAI Yu-sheng,DENG Jun,ZHU Bing-quan and LIN Qian-long.Metallogenic Process in the Southern Margin of North China Paleocontinent[J].Acta Geoscientia Sinica,2001,22(2):129-134. |
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| Authors: | ZHANG Zheng-wei ZHAI Yu-sheng DENG Jun ZHU Bing-quan and LIN Qian-long |
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| Institution: | Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangdong;China University of Geosciences, Beijing;China University of Geosciences, Beijing;Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangdong;Henan Institute of Geology, Zhengzhou |
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| Abstract: | According to tectonization characteristics of the study area in the southern margin of North China Paleocontinent, the metallogenic system could be classified into five subsystems:①the pre-Mesoproterozoic metallogenic subsystem in the active southern margin of North China Paleocontinent;② the Middle-Late Proterozoic metallogenic subsystem in the inactive continent margin;③ the Early Paleozoic metallogenic subsystem in the converse type continent margin; ④the Paleozoic metallogenic subsystem in the active margin;⑤the Mesozoic metallogenic subsystem in the collision margin.
The metallogenic processes are mainly present as follows:①structure-magma-fluid metallogenic process, which is related to magmatic activities of Yanshanian intermediate-acid small rock masses;②structure-formation-fluid metallogenic process, which can be divided into two types according to the structural process levels,the ductile and ductile-brittle shear zone type ore deposit formed by the middle-deep level structural process and the structure-altered rock type ore deposit formed by shallow level structural process. The metallogenic belt is controlled by a EW-plunging mantle syncline. From east to west there are check-form fractures, which control synergic crust-mantle grano-porphyry rocks. |
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| Keywords: | geochemical steep-dipping zone paleocontinental margin metallic deposit East Qinling |
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