西昆仑地区卡兰古密西西比河谷型铅锌矿床成矿地质特征和成矿作用探讨  

Probe into Kalangu MVTType Lead-Zinc Deposit's Minerogenetic Process and the Source of Minerogenetic Material in West of Kunlun

作　　者：匡文龙[1] 刘石华 刘继顺[1] 朱自强[1] 

机构地区：[1]中南大学资源环境与建筑工程学院,湖南长沙410083 [2]广东省地勘局722地质大队,广东汕头516026

出　　处：《世界地质》2002年第4期340-346,共7页World Geology

基　　金：中国地质调查局资助项目 (2 0 0 2 10 2 0 0 0 2 1)

摘　　要：密西西比河谷型 (MVT)铅锌矿是西昆仑地区重要的铅锌矿床类型之一。在详实的野外考察和系统的采样分析基础上 ,通过对卡兰古典型的密西西比河谷型铅锌矿床有关样品的室内测试、岩矿鉴定等研究资料分析 ,认为其成矿物质主要来源于古老基底以及早古生代奥陶系 ;在成矿作用过程中 ,喜马拉雅期逆冲推覆褶皱作用所引发的大规模热卤水运移、循环 (特别是油田卤水与深层流体的混合 ) ,导致了矿质的进一步富集、沉淀。Kalangu MVT type lead-zinc deposit area situated to the tectonic connection of West Kunlun orogenic zone and Tarimu block, belongs to the north section of Late Palaeozoic's Aoyitage-Kuerliang fractured geosyncline, is one part of the West Kunlun's Kusilafu-Talong lead-zinc-copper minerogenetic belt. Based on the abundant information from detail field inspecting , measuring and rock-mineral identifying indoor,the authors regarded that the minerogenetic matter came from the old foundation and Early Palaeozoic's Ordovician system. During the minerogenetic process,a grand gathering of tropic brine's moved and circulated, which leaded by Himalaya period's reversed napped fold, especially when the oil field brine mixed with deeply liquid, caused minerogenetic matter enriching and precipitating.

关 键 词：密西西比河谷型 卡兰古铅锌矿床 西昆仑库斯拉甫-他龙铅锌成矿带 热卤水 

分 类 号：P618.42[天文地球—矿床学] P618[天文地球—地质学]