A Metallogenic Model of Gold Deposits of the Jiaodong Granite-Greenstone Belt |
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作者姓名: | DENG Jun YANG Liqiang SUN Zhongshi WANG Jianping WANG QingfeiXIN Hongbo and LI Xinjun Key Laboratory of Lithospheric Tectonics and Exploration. China University of Geosciences Ministry of Education Beijing Institute of Geology and Geophysics Chinese Academy of Sciences Beijing Faculty of Earth Sciences Jilin University Changchun Jilin |
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作者单位: | DENG Jun,YANG Liqiang,SUN Zhongshi,WANG Jianping,WANG QingfeiXIN Hongbo and LI Xinjun Key Laboratory of Lithospheric Tectonics and Exploration. China University of Geosciences,Ministry of Education,Beijing 100083;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100101 Faculty of Earth Sciences,Jilin University,Changchun,Jilin 130061 |
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基金项目: | This study is supported jointly by the National Natural Science Foundation of China,The Key Project of Science and Technology Research,教育部跨世纪优秀人才培养计划,国家重点基础研究发展计划(973计划) |
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摘 要: | An analysis of trace elements and isotopic geochemistry suggest that the ore-forming materials of gold deposits in the Jiaodong granite-greenstone belt have multiple sources, especially the mantle source. Seismic wave, magnetic and gravity fields show that the crust-mantle structure and its coupling mechanism are the fundamental dynamic causes for the exchange and accumulation of materials and energy in the metallogenic system. Considering the evolution history of the structural setting, the tectono-metallogenic dynamics model of the area can be summarized as follows: (1) occurrence of the greenstone belt during the Archean-Proterozoic-the embryonic form of Au-source system; (2) stable tectonic setting in the Paleozoic-an intermittence in gold mineralization; (3) intensive activation and reformation of the greenstone belt in the Mesozoic-tectono-mineralization and tectono-diagensis; (4) posthumous structural activity in the Cenozoic-destruction of orebodies in the later stage. In the middle and late Ind
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关 键 词: | 沉积物 金 花岗岩 绿玉 同位素 地球化学 胶东 |
A Metallogenic Model of Gold Deposits of the Jiaodong Granite-Greenstone Belt |
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Authors: | DENG Jun YANG Liqiang SUN Zhongshi WANG Jianping WANG QingfeiXIN Hongbo and LI Xinjun Key Laboratory of Lithospheric Tectonics and Exploration China University of Geosciences Ministry of Education Beijing |
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Institution: | DENG Jun,YANG Liqiang,SUN Zhongshi,WANG Jianping,WANG QingfeiXIN Hongbo and LI Xinjun Key Laboratory of Lithospheric Tectonics and Exploration. China University of Geosciences,Ministry of Education,Beijing,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing Faculty of Earth Sciences,Jilin University,Changchun,Jilin |
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Abstract: | An analysis of trace elements and isotopic geochemistry suggest that the ore-forming materials of gold deposits in the Jiaodong granite-greenstone belt have multiple sources, especially the mantle source. Seismic wave, magnetic and gravity fields show that the crust-mantle structure and its coupling mechanism are the fundamental dynamic causes for the exchange and accumulation of materials and energy in the metallogenic system. Considering the evolution history of the structural setting, the tectono-metallogenic dynamics model of the area can be summarized as follows: (1) occurrence of the greenstone belt during the Archean-Proterozoic-the embryonic form of Au-source system; (2) stable tectonic setting in the Paleozoic-an intermittence in gold mineralization; (3) intensive activation and reformation of the greenstone belt in the Mesozoic-tectono-mineralization and tectono-diagensis; (4) posthumous structural activity in the Cenozoic-destruction of orebodies in the later stage. In the middle and late Indosinian, the Tancheng-Lujiang fault zone cut deeply into the upper mantle so that the ore-bearing fluids migrated to higher layers through the crust-mantle interaction, resulting in alteration and mineralization. |
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Keywords: | Jiaodong granite-greenstone belt source of ore-forming materials crust-mantle structure tectono-metallogenic model |
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