文章摘要
朱海宾,肖波,刘国平.中南部非洲卢富里安铜钴矿带多期次成矿作用演化[J].矿产勘查,2019,(4):949-956
中南部非洲卢富里安铜钴矿带多期次成矿作用演化
Multiphase metallogenetic evolution of the Lufilian copper-cobalt belt in central and southern Africa
投稿时间:2018-03-02  
DOI:
中文关键词: 卢富里安铜钴矿带  多期次成矿作用  区域成矿模式  非洲
英文关键词: Lufilian Copper-Cobalt Belt  Multi-stage mineralization  Regional metallogenic model
基金项目:
作者单位
朱海宾 中矿资源集团股份有限公司,北京 100089 
肖波 中色非洲矿业有限公司,基特韦赞比亚 
刘国平 中国有色矿业集团有限公司,北京 100007 
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中文摘要:
      中南部非洲新元古代卢富里安(Lufilian)铜钴矿带是全球最主要的铜、钴产地,该成矿带中除了传统上最著名的沉积型铜钴矿以外,还发育有大型的MVT型铅锌矿、沉积型铀铜矿、变质热液型铜金矿和镍铜矿。文章通过整理研究该成矿带内已有的年代学数据,归纳总结该成矿带漫长复杂多期次的成矿作用,划分其成矿年龄范围大约在880~500Ma之间,大致可识别出7个期次;区域上长期的矿化作用时间、多期次成矿作用可能是该矿带中沉积型铜钴矿规模大、数量多、分布广、品位高的原因。结合该成矿带中地层和构造特征,其大致经历了6个演化阶段:(1) 裂谷形成初期;(2) 裂谷发育高峰阶段;(3) 裂谷发育后期热松弛阶段;(4) 区域性伸展构造运动阶段;(5) 沉积成矿盆地倒转阶段;(6) 广泛的造山运动和区域性变质作用阶段。
英文摘要:
      The Neoproterozoic Lufilian copper-cobalt belt in central and southern Africa is the world's most prevalent copper and cobalt producing area. In addition to traditionally the most famous sedimentary copper-cobalt ore, this metallogenic belt is also characterized by large MVT type lead-zinc deposits, sedimentary uranium-copper deposits, metamorphic hydrothermal copper-gold deposits and nickel-copper deposits. This paper summarizes the long and complex multi-stage mineralization of the metallogenic belt by sorting out the existing geochronology data of the metallogenic belt and divides it into mineralization age range of about 880 ~ 500Ma, which can be roughly identified seven periods; the long-term mineralization time and multi-stage mineralization in the area may be the reason for the large-scale, large-scale, widely distributed and high-grade sedimentary copper-cobalt deposits in the ore belt. Combined with the stratigraphy and tectonic features of this metallogenic belt, it has undergone six stages of evolution:(1) the initial stage of rifting formation; (2) the stage of rift peak development; (3) the late relaxation stage of rift development; (4) Regional extensional tectonic movement stage; (5) sedimentary metallogenic basin inversion phase; and (6) extensive orogeny and regional metamorphism.
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