关于钦-杭成矿带的若干认识  

On the understanding of Qinzhou Bay-Hangzhou Bay metallogenic belt,South China

作　　者：周永章[1,2,3] 郑义[1,2,3] 曾长育[1,2,3] 梁锦[1,2,3] 

机构地区：[1]中山大学地球科学与地质工程学院,广东广州510275 [2]中山大学地球环境与地球资源研究中心,广东广州510275 [3]广东省地质过程与矿产资源探查重点实验室,广东广州510275

出　　处：《地学前缘》2015年第2期1-6,共6页Earth Science Frontiers

基　　金：中国地质调查局地质调查项目(1212011085412;12120113067600);国家自然科学基金项目(41273040)

摘　　要：钦-杭成矿带作为一个新的成矿带,人们对它作为独立成矿单元的研究才刚刚开始。本研究认为,钦-杭成矿带是一条与扬子—华夏古老板块结合带对应的成矿带,并可分北、中、南3段。其中,中段与南岭带大体一致,主要分布在北纬24°~27°。钦-杭成矿带同时是一条古海洋喷流热水沉积矿床密集分布带,在认定的喷流热水沉积矿床和岩浆/热液矿床中,有相当一部分属于两期复式成矿：在元古宙或古生代,首先出现喷流热水沉积矿床,然后在燕山期叠加了岩浆/热液成矿作用。钦-杭成矿带是一条重要的斑岩矿床带,斑岩型矿床具有重要的找矿潜力。古老俯冲带改造成矿作用是其重要的成矿机制。The Qinzhou Bay（Q）-Hangzhou Bay （H） metallogenic belt is nearly consistent spatially with the giant suture separating the fossil Yangzi and the Cathaysian plates, South China. It may be subdivided, based on the geological variation, into three sections, the northern, the middle and the southern, with the middle section overlapping the traditional Nanling belt. Fossil ocean-floor exhalation-hydrothermal deposits are widely distributed in the Q-H belt. Quite some of them are attributed to the origin of two-stage mineralization, with exhalation-hydrothermal mineralization during the Proterozoic or Paleozoic period being superimposed or reworked by magmatism and/or related hydrothermal fluids mineralization during the Yanshanian period. The Q-H metallogenic belt is also characterized by rich granitic porphyry metallic deposit. It may be considered a porphyry metallogenic belt, where Mesozoic reworking of fossil plate subduction system is an important type of metallogenetic mechanism.

关 键 词：钦-杭成矿带 喷流热水沉积矿床 斑岩型矿床 古老俯冲带改造成矿作用 

分 类 号：P611[天文地球—矿床学]