西南“三江”格咱岛弧斑岩成矿系统

李文昌, 余海军, 尹光候. 2013. 西南“三江”格咱岛弧斑岩成矿系统. 岩石学报, 29(4): 1129-1144.
引用本文: 李文昌, 余海军, 尹光候. 2013. 西南“三江”格咱岛弧斑岩成矿系统. 岩石学报, 29(4): 1129-1144.
LI WenChang, YU HaiJun, YIN GuangHou. 2013. Porphyry metallogenic system of Geza arc in the Sanjiang region, southwestern China. Acta Petrologica Sinica, 29(4): 1129-1144.
Citation: LI WenChang, YU HaiJun, YIN GuangHou. 2013. Porphyry metallogenic system of Geza arc in the Sanjiang region, southwestern China. Acta Petrologica Sinica, 29(4): 1129-1144.

西南“三江”格咱岛弧斑岩成矿系统

  • 基金项目:

    本文受国家重点基础研究发展计划(973计划)项目(2009CB421007);中国地质调查局地质调查工作项目(12120113094600、1212011085137)和国家自然科学基金重点项目(U1133602)联合资助.

详细信息
    作者简介:

    李文昌,男,1962年生,教授,矿床学专业,长期从事找矿勘探和矿床地质研究, E-mail: lwcyndd@163.com

  • 中图分类号: P611

Porphyry metallogenic system of Geza arc in the Sanjiang region, southwestern China

  • 西南“三江”格咱岛弧是“三江”古特提斯演化形成的重要地质构造单元,该单元从晚三叠世洋壳俯冲、洋盆关闭转入碰撞及走滑剪切阶段都产生酸性岩体,形成斑岩Cu-Mo-Au矿床,并构成独立的成矿系统。笔者将格咱岛弧成矿作用以三大岩浆活动期次为基础划分为三套成矿系统,即印支期斑岩Cu多金属成矿系统、燕山期斑岩Mo-Cu多金属成矿系统和喜马拉雅期富碱斑岩Au-Mo-Cu多金属成矿系统。本文从成矿时间、成矿物质来源、成矿流体系统和成矿动力学背景等方面详细总结论述了格咱岛弧的三套斑岩成矿系统。同一地区三大成矿系统反映三次地质构造事件,这种构造演化的连续性和成矿对应性使得该带的研究具有重要意义。

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  • 图 1 

    格咱岛弧区域地质略图

    Figure 1. 

    Tectonic map of Geza island arc

    图 2 

    卓玛岩体锆石U-Pb年龄

    Figure 2. 

    Zircon U-Pb diagram for the Zhuoma porphyry

    图 3 

    地苏嘎岩体锆石U-Pb年龄

    Figure 3. 

    Zircon U-Pb diagram for the Disuga porphyry

    图 4 

    格咱岛弧印支期斑岩矿床矿石矿物硫同位素直方图

    Figure 4. 

    Histogram of δ34S of sulfides from Geza arc Indosinian porphyry copper deposit

    图 5 

    格咱岛弧印支期斑岩矿床岩石和矿石矿物的铅构造模式图(底图据Zartman and Doe, 1981)

    Figure 5. 

    Tectonic model for rocks and ores of Indosinian porphyry copper deposit in Geza island arc (after Zartman and Doe, 1981)

    图 6 

    格咱岛弧印支期斑岩矿床岩石和矿石矿物的铅同位素组成构造源区判别图(底图据Zartman and Doe, 1981)

    Figure 6. 

    Sketch map for determination of tectonic source by Pb-isotope compositions of rocks and ore minerals from Geza arc Indosinian porphyry copper deposit (after Zartman and Doe, 1981)

    图 7 

    印支期斑岩Cu多金属矿床成矿模式图

    Figure 7. 

    Metallogenic model of Geza island arc Indosinian porphyry Cu-polymetallic deposit

    图 8 

    红山矿石矿物的铅构造模式图(底图据Zartman and Doe, 1981)

    Figure 8. 

    Tectonic model for ores in Hongshan deposit (after Zartman and Doe, 1981)

    图 9 

    红山矿石矿物的铅同位素组成构造源区判别图(底图据Zartman and Doe, 1981)

    Figure 9. 

    Sketch map for determination of tectonic source by Pb-isotope compositions of ore minerals from Hongshan deposit (after Zartman and Doe, 1981)

    图 10 

    燕山期花岗闪长斑岩成岩成矿模式图

    Figure 10. 

    Metallogenic model of Yanshanian porphyry deposit

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出版历程
收稿日期:  2012-10-22
修回日期:  2013-01-16
刊出日期:  2013-04-01

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