西藏甲马铜多金属矿床远景预测  

PROSPECTIVE FORECASTING OF JIAMA COPPER-POLLYMETIC ORE DEPOSIT, TIBET

作　　者：任云生[1] 张金树 范文玉 蔡朝阳[1] 

机构地区：[1]吉林大学地球科学学院,长春130061 [2]西藏地质六队,西藏堆龙德庆县851400

出　　处：《地质与勘探》2002年第5期30-32,43,共4页Geology and Exploration

基　　金：吉林大学青年教师基金资助项目。

摘　　要：近年研究表明 ,作为西藏境内少数几个大型矿床之一的甲马铜多金属矿床先后经历了燕山晚期海底喷流沉积成矿作用和喜马拉雅期斑岩型成矿作用 ,相应形成矿区层状主矿体和斑岩型矿体。矿区地质特征、主成矿元素空间分布规律分析后认为 :矿区东、西段各存在一个喷流中心 ,与之相关的层状矿体及深部脉状、网脉状矿体是今后找矿的重点靶区 ;喜马拉雅期斑岩成矿作用在区域及矿区内均有显示 ,具有不可忽视的成矿潜力。As one of several larger deposits in Tibet, Jiama deposit went through submarine sedimentary exhalation in the late Yanshanian period and porphyry mineralization in the Himalayan period, by which the stratiform orebodies and porphyry ones were formed respectively. Analyses on ore geology and major ore-forming elements indicate that there are two exhalative centers in ore district. The stratiform orebodies and lode-network ones should be chosen firstly in the future exploration. Since the porphyry mineralization can be found in both region and ore district, ore-forming potent and prospect for ore searching should not be neglected.

关 键 词：铜多金属矿床 海底喷流沉积 斑岩型成矿作用 远景预测 成矿潜力 

分 类 号：P618.41[天文地球—矿床学]