| 华北古大陆南缘的金属成矿作用 |
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| 关键词:geochemical steep-dipping zone paleocontinental margin metallic deposit East Qinling |
| 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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| Metallogenic Process in the Southern Margin of North China Paleocontinent |
| 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. |
| ZHANG Zheng-wei,ZHAI Yu-sheng,DENG Jun,ZHU Bing-quan,LIN Qian-long.2001.Metallogenic Process in the Southern Margin of North China Paleocontinent[J].Acta Geoscientica Sinica,22(2):129-134. |
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