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与二叠世花岗岩有关Pb-Zn矿床;③与晚三叠世花岗岩有关W-Mo和Sn-Nb-Ta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。
Northeastern Guangxi is tectonically located in the transition zone between the Jiangnan orogenic belt and the South China fold belt, and has a unique tectonic position. Using detailed analysis of a series of typical deposits and chronological data of granite related, along with deposit types and ore-forming elements, this study divided the deposits in this area into six metallogenic systems. (1) W-Mo deposits related to the Silurian granite; (2) Pb-Zn deposits related to the late Triassic granite; (3) W-Mo deposits and Sn-Nb-Ta deposits associated with the Triassic granite; (4) W-Sn deposits related to the Middle-Late Jurassic granite~ (5) W-Sn deposits associated with the Cretaceous granite~ (6) Uranium deposit related to the granite. The formation of these deposits is closely related to tectonic-magmatic evolution in different periods and formed mainly at syn-collision compressional setting and/or post-collision extensional setting.
出处
《地质学报》
EI
CAS
CSCD
北大核心
2012年第11期1713-1725,共13页
Acta Geologica Sinica
基金
国家自然科学基金项目(编号41272112
40872065)
国家重点基础研究发展规划项目(编号2012CB416705)
中国科学院"百人计划"项目
广西自然科学基金重点项目(编号2010GXNSFD013001)
中国地质调查项目(编号1212011085408)资助成果