湖南大坳钨锡矿区构造控矿规律及其在找矿中的应用效果  

ORE CONTROLLING REGULARITIES OF STRUCTURE IN DA'AO TUNGSTEN AND TIN ORE FIELD AND APPLICATION EFFECT IN ORE PROSPECTING

作　　者：曾志方[1] 曾永红[1] 刘大勇[2] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]湖南省地质矿产勘查开发局四一八队,湖南娄底417000

出　　处：《矿产与地质》2005年第1期19-24,共6页Mineral Resources and Geology

基　　金：中国地质调查局国土资源大调查项目:"湖南九嶷山-姑婆山地区锡多金属矿评价"(编号200310200070)部分成果。

摘　　要：从矿床特征入手,对控矿构造进行具体分析,从区内岩浆活动和区域构造应力场演化规律的角度,论证了区内构造的形成机制,探讨了构造对钨锡成矿作用和矿体空间分布规律的控制。认为区内构造的形成与岩浆多阶段脉动侵位密切相关,热液致裂和NNE向断裂的左行剪切所产生的力偶作用使控矿构造产生多次脉动活动和矿化作用,控矿构造的空间分布特征及其性质决定了钨锡矿化类型和矿脉(体)的产出特征,构造控矿具有定位性、等距性、定向性及分带性等规律,应用该规律,取得了较好找矿效果。According to the characteristics of ore deposit, the forming mechanism of the structures in the region was demonstrated and the ore controlling regularities of the structure in tungsten and tin mineralization and special distribution of the orebodies were discussed from the views of magma activities and the structure evolvement regularity of regional stress field based on the analysis of the ore controlling structure. It is considered that structure formation in the region was closely associated with multiple stages of pulse magma emplacement. The special distribution characteristics of the ore controlling structures determined the occurrence feature of tungsten and tin mineralization and the ore veins or orebodies. The ore controlling structure shows the regularities of orientation, isometry, directional and zoning, which has been used effectively in ore prospecting.

关 键 词：钨锡矿床 构造控矿规律 形成机制 脉动侵位 应力场 大坳 

分 类 号：P618.44[天文地球—矿床学] P618.67[天文地球—地质学]