摘要
勒青拉铅锌多金属矿床位于冈底斯成矿带东段北矿带。文章在系统总结矿床的成矿地质背景、矿床地质特征、矿床地球化学特征的基础上,分析了成矿时代和矿床成因。勒青拉铅锌多金属矿床严格受地层-构造-岩浆岩三位一体控制,成矿流体和成矿物质主要来自岩浆热液,成矿温度在423℃～290℃之间,成矿热液在接触带附近与碳酸盐地层发生接触交代作用生成夕卡岩型铁矿床,并经东西向断裂远距离运移至碳酸盐地层发生接触交代作用形成夕卡岩型铅锌多金属矿床。成矿时代为喜马拉雅早期。
Leqingla Pb - Zn polymetallic deposit is located in the northern part of the eastern Gangdise metallogenic belt. Based on systematic summarization on geological setting, ore geology and geochemistry, mineralizing age and genesis of Leqingla Pb -Zn polymetallic deposit is analysed. It is concluded that the deposit is strictly controlled by strata, structure and igneous rocks, ore - forming fluids and sources are mainly derived from magma. Min- eralizing temperature varies from 423℃ to 290℃. Metasomatism between ore - forming fluids and the carbonate strata formed skarn - type Fe ores, and skarn - type Pb - Zn polymotallic ores were formed when the fluids moved along E - W fault. Mineralizing age is in the early Himalayan.
出处
《地质与勘探》
CAS
CSCD
北大核心
2008年第5期10-16,共7页
Geology and Exploration
基金
中国地质调查局地质大调查项目(编号:1212010781005)资助
关键词
勒青拉
地质特征
矿床成因
铅锌多金属
西藏
Leqingla, geological characteristics, ore genesis, Pb - Zn polymetal, Tibet
