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

作　　者：刘和林 李志伟[2] 钟维敷 钱祥贵[2] 

机构地区：[1]云南省地勘局第二地质大队,文山653000 [2]云南省国土资源厅矿产资源储量评审中心,昆明650011 [3]云南省地质调查院资源评价处,昆明653000

出　　处：《云南地质》2002年第2期107-120,共14页Yunnan Geology

基　　金：原国家计委 98- 0 1项目部分研究成果

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 )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.

关 键 词：盆-山过渡区 成矿类型 中新生代 云南 造山带 楚雄盆地 断陷盆地 

分 类 号：P542[天文地球—构造地质学] P611[天文地球—地质学]