华北地块北缘铅锌矿床类型、地质特征及构造演化
投稿时间:2018-03-14  修订日期:2018-06-03  点此下载全文
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作者单位E-mail
解洪晶 北京矿产地质研究院 北京 xiehongjing717@163.com 
王玉往 北京矿产地质研究院 北京  
孙志远 中国地质大学 北京  
周国超 中国地质大学 北京  
基金项目:国家自然科学基金项目(编号: 41602101)资助。
中文摘要:本文重点对华北地块北缘铅锌矿类型、特征、时空分布等进行了初步总结,并探讨了铅锌成矿作用与区域构造演化的关系。通过初步总结认为,该地区铅锌矿床的主要成因类型有SEDEX型、矽卡岩型、岩浆热液型、沉积改造型、MVT型及复合型等。从形成时间来看,矿床主要形成于中元古代、晚古生代和中生代三个时期,并在中元古代和中生代达到高峰。中元古代以形成SEDEX型、沉积改造型和MVT型矿床为主,该时期处于被动陆缘基础上发育的裂谷环境;晚古生代产出少量岩浆热液型铅锌矿床,其形成可能为华北地块与西伯利亚南缘蒙古增生褶皱带拼合后的伸展及岩石圈拆沉作用有关;中生代为岩浆热液型、矽卡岩型铅锌矿床的重要成矿期,该时期主要发育陆内构造运动,可能为欧亚构造动力学体系与西太平洋动力学体系复合、叠加作用的结果。
中文关键词:华北地块北缘  铅锌矿  地质特征  构造演化
 
Types, Characteristics, and Tectonic Evolution of Pb-Zn Deposits in Northern Margin of the North China Block
Abstract:In this paper, we provides an overview of the types, characteristics, and temporal-spatial distributions of the Pb-Zn deposits in northern margin of the North China block, and seeks to relate these deposits to the tectonic evolution of the North China block, based on the data from both the Chinese and Western literature. The major ore deposits are of SEDEX, skarn, hydrothermal, sediment-reformed, MVT, and complex types, et al. Large-scale mineralizations have occurred notably in the Mesoproterozoic, Late Paleozoic and Mesozoic and reached the peak in Mesoproterozoic and Mesozoic. The Mesoproterozoic was a productive period for SEDEX, sediment-reformed, and MVT Pb-Zn deposits. These deposits were mainly formed in rift of the passive continental margin. The Late Paleozoic era was formed a small amount of hydrothermal Pb-Zn deposits as a result of the extending and delamination after the amalgamation between the North China block and the Mongolia fold belt of the southern margin of the Siberia block. The Mesozoic was a significant metallogenic era of hydrothermal and skarn deposits. These deposits are mainly formed in intracontinental tectonic settings resulted from the superposition of Eurasian and western Pacific Ocean dynamic systems.
keywords:northern margin of the North China block  Pb-Zn deposit  geological characteristics  tectonic evolution
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