| 坚润堂,杨帆,王岩梅.滇西思茅盆地中新生代构造演化与铜多金属成矿[J].矿产勘查,2017,8(1):67-74 |
| 滇西思茅盆地中新生代构造演化与铜多金属成矿 |
| Tectonic evolution and copper polymetallic metallogenic process in Mesozoic and Cenozoic Simao basin, western Yunnan |
| 投稿时间：2016-03-25 |
| DOI： |
| 中文关键词: 特提斯 铜多金属矿床 热水沉积 思茅盆地 |
| 英文关键词: Tethys, copper polymetallic deposit, hydrothermal deposition, Simao basin |
| 基金项目:云南省科技计划项目(编号:2013CA019)和云南省科技创新人才计划(编号:2012HC024)资助。 |
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| 摘要点击次数: 2025 |
| 全文下载次数: 1071 |
| 中文摘要: |
| 滇西思茅盆地是发育在古特提斯多岛洋构造格局基础之上的中新生代沉积盆地,其形成演化与三江造山带构造演化密切相关。继晚二叠世古特提斯洋闭合之后,思茅地区经历了中生代(T3-K)新特提斯的开启及盆地形成和新生代(E-Q)特提斯闭合、陆内碰撞造山、挤压走滑及盆—岭构造系统形成等完整演化过程。与此对应,中新生代以来思茅地区构造环境的演变过程,对区内铜多金属成矿起到了决定性作用,在系统分析的基础上,提出思茅盆地中新生代大致经历了陆内裂陷盆地热水沉积成矿(T3)→红层盆地热卤水成矿(J-E)的演化过程,热水沉积型是盆地最为重要的矿床类型,应是今后地质工作和科学研究重点关注的对象。 |
| 英文摘要: |
| The Simao sedimentary basin is a Mesozoic and Cenozoic sedimentary basin which was formed on the base of Paleo Tethys multi island ocean framework, which was closely related to the tectonic evolution of Tethy-Sanjiang orogenic belt. After the Paleo-Tethys was closed at late Permian epoch, two stages of tectonic evolutions were experienced in the district since Mesozoic age, i.e., New Tethys opened and basin formed (T3-K) and New Tethys closed (E-Q), convergence and collisional orogeny, continent-continent collision orogeny and basin-range structure forming stage. Correspondingly, the process of copper polymetallic metallogenic evolution in the district is closely associated with the tectonic evolution in the Simao basin. The main copper polymetallic mineralization types include exhalative-sedimentary mineralization in foreland basin (T3) and thermal brine mineralization in the red bed basin (J-E). Among them, the exhalative sedimentary copper polymetallic deposit is the most important metallogenic type. |
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