节点文献
云南中西部中新生代盆-山过渡区构造及成矿特征
THE STRUCTURE AND METALLOGENESIS OF THE TRANSITIONAL AREA BETWEEN MESOZOIC-CENOZOIC BASINS AND OROGENIC BELTS IN CENTRAL-WESTERN YUNNAN
【摘要】 简述云南中西部地壳岩石圈演化历史过程中 ,中 新生代形成的楚雄盆地与哀牢山造山带两个重要地质单元 ,在空间上相互依存、在物质上相互转化的特点 ,分析盆 (地 ) 山(脉 )过渡区域主要构造特征 ,讨论此类构造地段作为构造动力、构造 流体活跃区对矿产资源形成的影响 :一是形成与走滑断裂 岩浆活动有关的铜 (钼 )、金矿床 ;二是在褶皱 冲断系统 ,导致铅锌、铜等大宗金属和金、银的巨量堆积。最后强调 ,盆 (地 ) 山 (脉 )过渡区域研究在指导新一轮成矿预测评价中的重要现实意义
【Abstract】 Two units, i e , Meszoic-Cenozoic sedimentary basins and orogenic belts were formed during the evolution of the crustal lithosphere of central-western Yunnan. They are each other correlative in time-space and transformed in materials. In this paper, we have an analyse of the main structural characteristics of the transitional area between them and a discussion about the metallogenic effects of this area as an active region of tectonic dynamic and fluid. The metallogenesis can be divided into two types, i e , the Cu(Mo) and Au deposits correlated with strike-slip faulting-magmatism and the magnitude accumulation of a lot of metals, such as Pb, Zn, Cu, Ag and Au resulted from folding-thrusting system. And we believe the study on the transitional area is very important as a guidance to the new metallogenetic prognosis and evaluation.
【Key words】 Transitional Structure between Basin and Mountains; Metallogenetic Type; Mesozoic-Cenozoic; Central-Western Yunnan;
- 【文献出处】 云南地质 ,Yunnan Geology , 编辑部邮箱 ,2002年02期
- 【分类号】P541
- 【被引频次】15
- 【下载频次】167