全文快速搜索:          
引用本文:刘学龙1,2 李文昌1,2 尹光侯2. 云南格咱岛弧斑岩-矽卡岩铜、钼(金)矿床成矿系统[J]. 中国地质, 2012, 39(4): 1007-1022.
LIU Xue-long 1,2, LI Wen-chang1,2, YIN Guang-hou2. The metallogenic system of porphyry-skarn type Cu ,Mo(Au) polymetallic deposits in Geza island arc of Yunnan Province[J]. Geology in China, 2012, 39(4): 1007-1022(in Chinese with English abstract).
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 964次   下载 1360 本文二维码信息
码上扫一扫!
分享到: 微信 更多
云南格咱岛弧斑岩-矽卡岩铜、钼(金)矿床成矿系统
刘学龙1,2 李文昌1,2 尹光侯21,2
1.中国地质大学(北京) 地球科学与资源学院,北京 100083;2.云南省地质调查局,云南 昆明 650051
摘要:
提要:格咱岛弧带是西南三江多岛弧盆系中一个主要的地质构造单元,它始于晚三叠世甘孜—理塘洋壳的向西俯冲,燕山期经历了陆内汇聚和造山后伸展作用阶段,区内岩浆活动和成矿作用强烈,是近年来新发现的重要铜多金属成矿带。根据区内岩浆岩和矿床的时空分布,同位素年代学证据,构造环境及成矿作用,将格咱岛弧成矿系统划分为印支期成矿亚系统和燕山期成矿亚系统。印支期主要发育了与安山岩同源的壳幔型中酸性岩浆作用,形成斑岩型Cu矿成矿系统,燕山期伴随着同碰撞中酸性岩浆活动形成斑岩型Mo(Cu)及热液型W(Mo)成矿系统。研究表明,格咱岛弧深部找矿具有较好的资源潜力,其中燕山期Mo多金属成矿已显现出良好的找矿前景。
关键词:  岛弧  成矿特征  成矿系统  印支期  燕山期  格咱
DOI:
分类号:
基金项目:国家重点基础研究发展计划973课题“巨型矿床的变化与保存”(2009CB421007)、中央高校基本科研业务费专项资金资助项目(2011PY0154):云南中甸格咱岛弧斑岩成矿系统研究、滇西北地区斑岩成矿系统研究与靶区优选项目资助成果。
The metallogenic system of porphyry-skarn type Cu ,Mo(Au) polymetallic deposits in Geza island arc of Yunnan Province
LIU Xue-long 1,2, LI Wen-chang1,2, YIN Guang-hou21,2
1.Faculty of Earth Science and Resources, China University of Geosciences, Beijing 100083, China;2. Yunnan Geological Survey, Kunming 650051, Yunnan, China
Abstract:
Abstract:Geza island arc belt is one of the important tectonic units in the archipelagic arc-basin system of the Sanjiang Region. it started its evolution at the westward subduction of Ganzi-Litang oceanic crust in Late Triassic, and experienced intracontinental convergence and post-orogenic extensional phase in Yanshanian period. In this region, there were strong magmatic activities and rich mineralization, constituting an important copper polymetallic ore concentration area discovered in recent years. According to temporal and spatial distribution of magmatic rocks and ore deposits, geochronological evidence, tectonic setting and mineralization, the Geza island arc metallogenic system can be divided into Indosinian metallogenic subsystem and Yanshanian metallogenic subsystem. The Indosinian subsystem mainly developed intermediate-acidic crust-mantle magmatism homologous with the andesite and formed porphyry Cu metallogenic system; the Yanshanian subsystem had syn-collision magmatic activities leading to the generation of the porphyry Mo (Cu) and W (Mo) hydrothermal metallogenic system. Studies show that Geza island arc has favorable resource potential in the depth, with Mo polymetallic mineralization of Yanshanian epoch showing better prospect.
Key words:  island arc, metallogenic characteristics  metallogenic system  Indosinian epoch  Yanshanian epoch  Geza