| 班公湖—怒江成矿带西段主要岩浆热液型矿床成矿特征初探 |
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| 关键词:magmatic-hydrothermal ore deposits characteristics of ore-forming intrusions sources of ore-forming materials mineralization elements association western Bangong Co–Nujiang metallogenic belt |
| 基金项目:中国地质调查局地质调查项目(编号: DD20160026)；国家自然科学基金项目(编号: 41403040) |
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| A Tentative Discussion on Metallogeny of the Main Magmatic-hydrothermal Ore Deposits in the Western Bangong Co–Nujiang Metallogenic Belt, Tibet |
| With magmatic-hydrothermal mineralization as the topic, this paper summarized the spatial distribution and mineralization types of the main ore deposits in the western Bangong Co–Nujiang metallogenic belt and investigated their metallogenic epochs. Six mineralization events were recognized, i.e., the early stage of Late Jurassic, the late stage of Late Jurassic, the late stage of Early Cretaceous, the middle stage of Late Cretaceous, the late stage of Late Cretaceous, and the Miocene period. On such a basis, this paper illustrated the mineralization features of the main ore deposits and compared the differences of basic geological characteristics, major elements, rare earth elements and trace elements compositions between the ore-forming intrusions. Based on studying Hf isotope of zircons from ore-forming intrusive rocks and Re content of molybdenite of the main ore deposits, the authors clarified the relationship between different diagenetic-metallogenetic material sources and mineralization elements associations, i.e., the more mixed mantle derived materials in the ore-forming process, the more possible the formation of the Cu-Au mineralization association. Based on the current prospecting and exploration extent, the regularity of the main magmatic-hydrothermal ore deposits was summarized, and the deposit types expected to make breakthrough and their corresponding target areas were also analyzed. |
| WANG Li-qiang,WANG Yong,DANZHEN Wang-xiu,LI Bao-long,LI Zhuang,LI Shen,FAN Yuan,LI Wei,GONG Fu-zhi.2017.A Tentative Discussion on Metallogeny of the Main Magmatic-hydrothermal Ore Deposits in the Western Bangong Co–Nujiang Metallogenic Belt, Tibet[J].Acta Geoscientica Sinica,38(5):615-626. |
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