华南中生代大花岗岩省成岩成矿作用研究进展与展望
Current Progresses and Prospect for Genesis of Extensive Mesozoic Granitoid and Granitoid-Related Multi-Metal Mineralization in Southern China
查看参考文献77篇
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文摘
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华南广泛发育中生代花岗质岩石,其形成伴随了巨量金属钨锡钼铋和铜铅锌等的成矿作用,构成了一个世界罕见的大花岗岩省成岩成矿区。近年来,高精度同位素定年已基本明确该区成岩成矿作用的时空分布格局,侏罗纪花岗岩及相关的成矿作用高度集中,成矿作用集中在150~160 Ma之间,峰值为156 Ma,与成矿有关的花岗质岩石形成时代为152~165 Ma之间,峰值为159 Ma。随着近年来矿物原位微区测试技术的高速发展,研究者获得了更多的岩浆演化信息,并探讨岩浆演化过程中成矿元素迁移和富集的控制因素,揭示出与不同类型金属成矿作用有关的花岗质岩浆的物理化学条件存在明显差别。同时,学者们高度重视壳-幔相互作用与华南大花岗岩省成岩成矿作用的关联,提出幔源组分通过不同方式参与中生代花岗岩的形成。笔者在论述这些研究进展的基础上,提出华南中生代大花岗岩省成岩成矿作用需要进一步研究的一些科学问题。 |
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其他语种文摘
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Geology of Southern China is characterized by widespread development of Mesozoic granitoids, and a large number of granitoid-related multi-metal ore deposits (e.g., W, Sn, Mo, Bi, Cu, Pb and Zn) are intensively distributed in this region, constituting one of the world’s Large Granitic Magmatism and Mineralization Province (LGMMP). Over the past decade, intensive scientific research has identified the precision age framework for magmatic activity and metallogenic event. These data have confirmed that Jurassic granitoids were mainly formed during 152-165 Ma with peaks at ca.159 Ma, whereas their associated ore deposits were mainly formed during 150-160 Ma, with a peak of ca.156 Ma. For an individual mining district, granitoid emplacement and related hydrothermal mineralization are basically penecontemporaneous. Meanwhile, with the rapid development of technology for in situ analysis of mineral, researchers have acquired a good deal of information from the magmatic evolution processes of Mesozoic granitoids, and revealed huge differences in physicochemical conditions for granitic magma among different kinds of metal mineralization. Also, dominant controlling factors for migration and enrichment of ore-forming elements during the magmatic evolution have attracted much attention for researchers. In addition, researchers have attached importance to the relationship between crust-mantle interaction and petrogenesis of granitoids, rose that mantle-derived materials can participate in their magmatic evolution in different ways, and finally, discussed the relevance between the LGMMP and crust-mantle interaction. Based on these studies, we present some scientific questions that require further study on LGMMP of Southern China. |
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来源
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矿物学报
,2017,37(6):791-800 【核心库】
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DOI
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10.16461/j.cnki.1000-4734.2017.06.014
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关键词
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中生代花岗岩
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成岩成矿作用
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华南地区
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进展及展望
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地址
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1.
中国科学院地球化学研究所, 矿床地球化学国家重点实验室, 贵州, 贵阳, 550081
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金杏矿业有限责任公司, 湖南, 邵阳, 422000
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1000-4734 |
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学科
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地质学 |
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基金
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国家重点研发计划深地专项
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国家自然科学基金项目
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文献收藏号
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CSCD:6202256
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