陈浩,黄玉蓬,许加田,方江林,刘清强,李健,胡建民,吴春章,李雨城.四川省甘洛县高丰铅锌矿床地质特征与成因分析[J].地质找矿论丛,2021,36(3):265-275
四川省甘洛县高丰铅锌矿床地质特征与成因分析
The geological characteristics and genesis of Gaofeng Pb-Zn deposit in Ganluo county, Sichuan province
投稿时间:2020-11-17  
DOI:10.6053/j.issn.1001-1412.2021.03.003
中文关键词:  高丰铅锌矿  MVT型铅锌矿  矿床地质特征  矿床成因  四川省
英文关键词:Gaofeng Pb-Zn deposit  Mississippi Valley type Pb-Zn deposit  characteristics of the deposit  genetic mechanism  Sichuan province
基金项目:四川省地质勘查基金项目(编号:川国土资函[2015]55号)资助
作者单位E-mail
陈浩 四川省冶金地质勘查局成都地质调查所, 成都 610203
成都理工大学地球科学学院, 成都 610059 
 
黄玉蓬 四川省冶金地质勘查局成都地质调查所, 成都 610203 176152933@qq.com 
许加田 四川省冶金地质勘查局成都地质调查所, 成都 610203
成都理工大学地球科学学院, 成都 610059 
 
方江林 四川省冶金地质勘查局成都地质调查所, 成都 610203  
刘清强 四川省冶金地质勘查局成都地质调查所, 成都 610203  
李健 四川省冶金地质勘查局成都地质调查所, 成都 610203  
胡建民 四川省冶金地质勘查局成都地质调查所, 成都 610203  
吴春章 四川省冶金地质勘查局成都地质调查所, 成都 610203  
李雨城 四川省冶金地质勘查局成都地质调查所, 成都 610203  
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中文摘要:
      甘洛县高丰铅锌矿床为近年来扬子地块西南缘川滇黔交界区发现的大型铅锌矿床。矿床地质勘查表明,铅锌矿体主要赋存于震旦系灯影组白云岩层间破碎带中,共圈定6条铅锌矿体,其中Ⅰ-1和Ⅱ-1等2条主矿体延伸长、厚度大、品位富,多呈层状、似层状、脉状、团块状、浸染状分布。矿床受区域性断裂、褶皱构造和层间破碎带的控制,同时具有"层控"和后成的特点。根据同位素年代学信息判断,矿床形成于三叠纪末-侏罗纪的造山期构造运动中;综合同位素地球化学和包裹体地球化学特征,铅锌矿形成于中低温、中等盐度、中浅成的地质环境中;铅锌矿为造山期地下热卤水萃取围岩中的成矿物质,形成含矿流体,并在层间破碎带等减压空间聚集、卸载成矿。研究表明,矿床为受中生代构造活动控制、具有"层控"特点的热液交代充填型铅锌矿床,可与密西西比河谷型(MVT)铅锌矿床类比。
英文摘要:
      The Gaofeng Pb-Zn deposit is a newly discovered large size deposit in the triangle area of Yunnan, Guizhou and Sichuan provinces at the Southwest margin of Yangtze block. Ore bodies occur mainly in the fractural zone of Sinian Denying formation. 6 ore bodies are delineated of which ore body I-1, II-1 are extended longer, richer in ore grade and thicker with layered, layeroid, vein like, clumpy and dissemination structure. The deposit is controlled by regional fault and fold and interformational fractural zone and is characterized by Stratobound control and the epigenetic deposit. Isotropic chronological data show that the deposit was formed during Triassic-Jurassic orgogenic movement and data of isotopic geochemistry and the geochemical characteristics show that it formed under condition of low-medium temperature and medium salinity and medium-shallow depth. The ore fluid was concentrated in dilatant fractural zone and the ore materials were unloaded to form ore. The deposit is controlled by Mesozoic structural activity and characterized by Stratobound deposit and is correlated to Mississippi Valley type Pb-Zn deposit.
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