| 南岭成矿带中—晚侏罗世成钨、成锡、成铅锌（铜）花岗岩的差异性研究 |
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| 引用本文： | 秦拯纬,付建明,邢光福,程顺波,卢友月,祝颖雪.南岭成矿带中—晚侏罗世成钨、成锡、成铅锌（铜）花岗岩的差异性研究[J].中国地质,2022,49(2):518-541. |
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| 作者姓名： | 秦拯纬 付建明 邢光福 程顺波 卢友月 祝颖雪 |
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| 作者单位： | 1. 中国地质调查局武汉地质调查中心;2. 中国地质调查局花岗岩成岩成矿地质研究中心;3. 弗莱堡大学;4. 中国地质大学 |
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| 基金项目： | 国家自然科学基金项目（41802069）；;湖北省自然科学基金项目（2019CFB634）；;中国地质调查局项目（DD20221689、DD20190154）联合资助~~； |
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| 摘 要： | 【研究目的】南岭地区以发育强烈的中—晚侏罗世岩浆作用与相关金属成矿作用为主要特色，这些金属矿床尤以钨、锡、铅锌铜最具代表性。对这3类成矿花岗岩开展系统的对比研究，深入分析成矿差异原因，对指导区域找矿具有重要意义。【研究方法】本文通过搜集已发表的主量元素、微量元素、年代学、Sr-Nd-Hf同位素和矿物化学数据，并结合项目组长期野外地质调查进展，对3类成矿花岗岩进行了差异性研究。【研究结果】通过对比发现成钨、成锡、成铅锌铜3类花岗岩在时空分布格局、野外地质特征、矿物组成、源区性质、包体成因类型、岩浆分异程度、形成温度和氧逸度等方面具有明显的差异。【结论】笔者认为花岗岩的岩石地球化学成分、源区物质组成、岩浆分异程度以及岩浆演化过程中物化条件(如氧逸度)的综合差异是导致南岭花岗岩形成3类不同金属矿床的主要原因。在此基础上，进一步完善了南岭成矿带成钨、成锡、成铅锌铜花岗岩的综合判别标志，指导区域找矿勘查。
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| 关 键 词： | 钨、锡、铅锌铜矿床 成矿花岗岩 中—晚侏罗世 岩石成因 矿产调查工程 南岭 |
| 收稿时间： | 2020/9/8 0:00:00 |
| 修稿时间： | 2022/3/8 0:00:00 |
The petrogenetic differences of the Middle-Late Jurassic W-, Sn-, Pb-Zn Cu-bearing granites in the Nanling Range, South China |
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| QIN Zhengwei,FU Jianming,XING Guangfu,CHENG Shunbo,LU Youyue,ZHU Yingxue.The petrogenetic differences of the Middle-Late Jurassic W-, Sn-, Pb-Zn Cu-bearing granites in the Nanling Range, South China[J].Chinese Geology,2022,49(2):518-541. |
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| Authors: | QIN Zhengwei FU Jianming XING Guangfu CHENG Shunbo LU Youyue ZHU Yingxue |
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| Institution: | Wuhan Center of Geological Survey, China Geological Survey, Wuhan 430205, Hubei, China;Research Center of Granitic Diagenesis and Mineralization, China Geological Survey, Wuhan 430205, Hubei, China;Freiburg University, Freiburg 79104, Germany; China University of Geosciences, Wuhan 430074, Hubei, China |
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| Abstract: | This paper is the result of minerial exploration engineering.Objective]The Nanling Range in southern China is characterized by extensive granitic magmatic activity and significant metal deposits during the Middle-Late Jurassic, with W, Sn and Pb-Zn-Cu as the most representative metallogenic categories. In this regard, a systematic comparison study on the three types of ore-bearing granites and a thorough analysis on the origin of mineralization differences would have great implications for regional prospecting.Methods] In this contribution, the whole rock major and trace element concentrations as well as geochronological, Sr-Nd-Hf isotopical and mineral chemical data of these orebearing granites have been collected and reviewed to summarize their petrogenetic differences.Results] In combination with our major progress in the long-term geological survey, we suggest that differences do exist among W-, Sn-and Pb-Zn-Cu-bearing granites in many aspects, including the spatial-temporal distribution of the metallic deposits and related granitic plutons, geological characteristics, mineral compositions, source nature, enclave origin, differentiation degree, formation temperatures and the oxygen fugacity as well.Conclusions] It is concluded that the chemical component of granitic rocks, source materials, magmatic differentiation degree and physical-chemical environment during magma evolution are closely associated with the mineralization types (W, Sn, Pb-Zn-Cu) and control the processes of ore formation. Based on the above, the integrated classification criteria for the W-, Sn-and Pb-Zn-Cu-bearing granites from the Nanling Range has been improved, which would be helpful for ore prospecting in the region.Highlights: The integrated classification criteria for the W-, Sn- and Pb-Zn-Cu-bearing granites from the Nanling Range has been improved in terms of their geological characteristic, enclave origin and geochemical index; This would be helpful for ore prospecting in Nanling. |
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| Keywords: | W Sn and Pb-Zn-Cu deposits ore-bearing granite Middle-Late Jurassic petrogenesis minerial exploration engineering Nanling |
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