| Geodynamic settings of Mesozoic large-scale mineralization in North China and adjacent areas——Implication from the highly precise and accurate ages of metal deposits |
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| 引用本文： | 毛景文,王义天,张作衡,余金杰,牛宝贵.Geodynamic settings of Mesozoic large-scale mineralization in North China and adjacent areas——Implication from the highly precise and accurate ages of metal deposits[J].中国科学D辑(英文版),2003,46(8). |
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| 作者姓名： | 毛景文 王义天 张作衡 余金杰 牛宝贵 |
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| 作者单位： | 毛景文(Faculty of Geoscience and Resources, China University of Geosciences, Beijing 100083, China;Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China);王义天,张作衡,余金杰(Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China);牛宝贵(Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China) |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，the China State Mineral Resources Investigation Program |
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| 摘 要： | AlthoughthereareseveralmetallogeniceventsthroughthegeologicalhistoryintheNorthChinacratonandadjacentareas,includingtheArcheanBIFtypeirondepositsandtheProterozoicSEDEXtypePb-ZnandCudeposits,thelarge-scalepolymetallicmineralizationmainlyoccurredinMesozoic.H…
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Geodynamic settings of Mesozoic large-scale mineralization in North China and adjacent areas--Implication from the highly precise and accurate ages of metal deposits |
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| Abstract: | Based on the summary of the highly precise datings of the metal deposits and related granitic rocks in North China craton and adjacent areas, such as the molybdenite Re-Os datings, 40Ar-39Ar datings of mica, K-feldspar and quartz, some Rb-Sr isochrons, and the SHRIMP zircon U-Pb dating and single grain zircon U-Pb dating, we suggest that the large-scale mineralization in North China craton and adjacent areas take place in three periods of 200-160Ma, 140Ma, and 130-110Ma. Their corresponding geodynamic settings are proposed to be the collision orogenic process, transformation of the tectonic regime, and delamination of the lithosphere, respectively, in light of analyzing the Mesozoic geodynamic evolution in the North China craton. |
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| Keywords: | large-scale mineralization time constraint three metallogenic episodes geodynamic process |
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