赣南钨矿区域地质特征及找矿标志研究.doc

赣南钨矿区域地质特征及找矿标志研究 赣南地处华南褶皱系之万洋山诸广山拗褶断带与武夷山隆褶断带。古生代阶段属古亚洲构造域，中生代阶段属滨太平洋构造域。崇余饶地区则位于万洋山诸广山拗褶断带内次级北北东向复式向斜的东翼。区域经历了多阶段的强烈构造运动，而几乎每一次重要的地壳构造运动，都有相应的岩浆岩形成，具有多旋回岩浆活动特征。区域广泛分布的岩浆岩，是从加里东期至喜马拉雅期以来不同强度的多期次岩浆活动的产物。在岩石类型上，各大岩类均有不同程度的分布，其中以花岗岩类占主导，中基性岩类次之。燕山期花岗岩浆侵入活动最盛，且与钨、锡、稀有等金属成矿关系极为密切。各旋回的岩浆运动有着不同的特点和成矿专属性。中生代频繁而强烈的断块构造运动和多期次岩浆活动，有利于钨、锡等稀有元素不断析出和演化，矿化的高峰和岩浆演化的高峰相一致，区内燕山期构造旋回的演讲活动最为强烈，具有多其次侵入的特点，常形成一些复式花岗岩体，岩浆分异演化较为完善的燕山期花岗岩是主要成矿母岩，也是寻找钨矿床的重要前提。 Located in the south of jiangxi WanYang mount drape the extensive mountain bend so as to breakstubborn plait -- and wuyi mountain long plait broken broken belt. GuYaZhou Paleozoic stage of Mesozoic tectonic domain, the coast of stage. Chung region WanYang located more than give -- the wide mountain mountain in fault depression plait subprime north to the entry to the east wing. Areas of experience and strong tectonic movement and almost every important crust tectonic movement, have corresponding magmatite, polycyclic magma activity. Widespread magmatic rocks, the area from the east to the Himalayan period since the intensity of the magma activity times. In the rock types, each big rock types are different degree of distribution, which dominates, class of granite rock type. Yanshanian granite magma intrusion activities, and with the tungsten, tin, rare metal mineralization is very close relationship. Each cycle of magma movement has different characteristics and metallogenic specificity. The Mesozoic frequent and strong fault block tectonic movement and many times for the magma activity, tungsten, tin, etc rare elements constantly separation and evolution of the peak, mineralization and magma evolution is consistent, the peak of yanshan period to tectonic activity, with the most intense speech more into the next, often ed some compound magmatic differentiation, granite rock relatively perfect yanshanian granite rocks, is also the important prerequisite for tungsten bed. 关键词赣南 钨矿 区域地质 花岗岩 找矿标志 绪论中国钨矿最初在江西发现，而赣南的西华山钨矿又是发现最早的矿区。该矿床开采历史悠久，地质勘探和研究程度较高，是一个产于燕山期复式花岗岩岩株内的大型黑 钨矿石英脉型典型矿床，早已驰名中外，并广为国内外岩石学家、矿床学家所关注。西华山钨矿是我国黑钨矿资源重要产地之一。矿床地处赣粤两省交界的大余岭山脉之北麓，位于江西省大余县城北西九公里处。赣南素有世界钨都之称，而西华山钨矿更是赣南钨矿的一个典型代表，本文通过对西华山钨矿的形成与地质特征的讨论，来简单论述赣南钨矿区域地质特征及找矿标志。