地球学报2017，Vol.38Issue(5)：615-626,12.DOI:10.3975/cagsb.2017.05.03
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
A Tentative Discussion on Metallogeny of the Main Magmatic-hydrothermal Ore Deposits in the Western Bangong Co–Nujiang Metallogenic Belt, Tibet
摘要
Abstract
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.关键词
岩浆热液型矿床/岩浆岩特征/成岩成矿物质源区/矿化元素组合/班公湖—怒江成矿带西段Key words
magmatic-hydrothermal ore deposits/characteristics of ore-forming intrusions/sources of ore-forming materials/mineralization elements association/western Bangong Co–Nujiang metallogenic belt分类
天文与地球科学引用本文复制引用
王立强,王勇,旦真王修,李宝龙,李壮,李申,范源,李威,龚福志..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[J].地球学报,2017,38(5):615-626,12.基金项目
本文由中国地质调查局地质调查项目(编号: DD20160026)和国家自然科学基金项目(编号: 41403040)联合资助. This study was supported by China Geological Survey (No. DD20160026), and National Natural Sci-ence Foundation of China (No. 41403040). （编号: DD20160026）
