摘要
义敦岛弧是中国西南三江地区多岛弧盆系中十分关键的构造单元,更是研究全球碰撞造山作用的天然实验室,其所蕴含的矿产资源潜力巨大。构造对成矿作用的时空分布具有极明显的控制作用,由此本文总结并提出义敦岛弧造山带三大成矿作用:1印支晚期俯冲造山弧间裂谷成矿作用;2燕山晚期造山后伸展成矿作用;3喜马拉雅期陆内汇聚与走滑成矿作用。本文在总结前人大量研究的基础上,以大地构造理论为依托,结合区域地层概况,对该区构造动力演化和转换体制及其与成矿作用的相互关系等方面进行深度剖析,以期能对人们在该区进行成矿理论研究和找矿预测等方面提供帮助和指导。
Not only as an important tectonic unit of multi arc-basin system of the Sanjiang region, but also as a natural laboratory for the research on the metallogenesis regularity of global collision orogenic belts, the Yidun arc has a very huge potential of mineral resources. The tectonic movement play an extremely important role in the distribution of mineralization in time and space.Accordingly,this paper puts forward three mineralizations of Yidun island arc belts： （~The mineralization of subduction orogenic inter-arc rift valley in the late Indosinian; （~）The mineralization of post-orogenic extensional phase in the late Yanshan; （~The mineralization of intracontinental convergence and strike-slip in the Himalayan. Based on the summary of many previous researches and tectonic theory, combined with the regional stratigraphy situation, this paper also makes an in-depth analysis of the evolution and transformation of tectonic dynamic mechanism as well as the relationship with mineralization etc, in this area. This paper tries to provide some effective suggestions and guidances about metallogenic theory researching and prospecting prediction for people in the future.
出处
《四川有色金属》
2015年第1期9-12,共4页
Sichuan Nonferrous Metals
关键词
三江地区
构造演化
成矿作用
义敦岛弧带
Sanjiang area
tectonic evolution
mineralization
Yidun island arc
