桂东北钨锡稀有金属矿床的成矿类型、成矿时代及其地质背景
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国家自然科学基金项目(面上项目,重点项目,重大项目)


The typical metallic deposits, geochronological, and tectonic setting in Northeast Guangxi Province, South China
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    摘要:

    在大地构造位置上,桂东北地区位于江南造山带与华南褶皱带的过渡部位,具有独特的构造地理位置。在精细测试一系列典型矿床及其有关的花岗岩年代学的基础上,本文根据矿床类型、成矿元素组合,把该地区矿床分为6个成矿系统:(1)与志留纪花岗岩有关W-Mo矿;(2)与晚三叠世花岗岩有关Sn-Nb-Ta矿床;(3)与晚三叠世花岗岩有关W-Mo矿床;(4)与中-晚侏罗世花岗岩有关的W-Sn矿床;(5)与白垩世花岗岩有关的W-Sn矿床;(6)与花岗岩有关的铀矿。这些矿床的形成与不同时期构造-岩浆演化密切相关,主要形成于同碰撞挤压环境或者碰撞后伸展环境。

    Abstract:

    Northeast Guangxi has a unique tectonic unit, and is located between the Jiangnan orogenic belt and the South China fold belt. The paper presents the accurate ages of a series of deposits and their related granites with zircon SHRIMP U-Pb, zircon LA-ICP-MS, and the muscovite and biotite Ar-Ar, as well as the molybdenite Re-Os methods. On the basis of deposit types, mineralized elements assembleges in the region, The deposits could be divided into six ore-forming system, namely, (1) W-Mo deposits related to Silurian granite; (2) Sn-Nb-Ta deposits related to late Triassic granite; (3) W-Mo deposits associated with Triassic granite; (4) W-Sn deposits related to Middle-Late Jurassic granite; (5) W-Sn deposits associated with Cretaceous granite; (6) Uranium deposit related to Indosinian granite. The formation of these deposits is closely related to the different periods of tectonic-magmatic evolution, and associated with the syn-collision compressional setting and/or post-collision extensional setting.

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李晓峰,冯佐海,肖荣,宋慈安,杨锋,王翠云,康志强,毛伟.2012.桂东北钨锡稀有金属矿床的成矿类型、成矿时代及其地质背景[J].地质学报,86(11):1713-1725.
LI Xiaofeng, FENG Zuohai, XIAO Rong, SONG Ci′an, YANG Feng, WANG Cuiyun, KANG Zhiqiang, MAO Wei.2012. The typical metallic deposits, geochronological, and tectonic setting in Northeast Guangxi Province, South China[J]. Acta Geologica Sinica,86(11):1713-1725.

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  • 收稿日期:2012-04-22
  • 最后修改日期:2012-07-08
  • 录用日期:2012-07-16
  • 在线发布日期: 2012-11-13
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