| 重庆渝东南地区铅锌矿矿床成因浅析 |
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| 引用本文： | 杨弘忠,易点文,周庆磊,周瑞波.重庆渝东南地区铅锌矿矿床成因浅析[J].四川地质学报,2008,28(3):190-196. |
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| 作者姓名： | 杨弘忠 易点文 周庆磊 周瑞波 |
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| 作者单位： | 1. 重庆市地质矿产勘查开发局川东南地质大队,重庆,400039
2. 成都理工大学,成都,610059 |
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| 基金项目： | 中国地质调查局资助项目，中国地质调查局资助项目 |
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| 摘 要： | 重庆渝东南地区铅锌矿呈层状、似层状、脉状产于下、中寒武统碳酸盐岩的层间破碎带及构造裂隙中，受构造和地层的控制，区域性大断裂为导矿构造。矿床围岩蚀变主要有白云石化、硅化、黄铁矿化、褐铁矿化、方解石化、重晶石化、萤石化等。铅锌成矿元素主要来自基底，其次来自赋矿地层；硫主要来源于地层硫酸盐。成矿流体为海水混合了地层压实水的高盐度热卤水，并受重力和构造挤压的联合驱动。铅锌矿的主成矿期为加里东期，矿体在燕山期受到改造，为经过后期热液改造的MVT铅锌矿床。
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| 关 键 词： | 铅锌矿 矿床成因 渝东南 |
Simple Explanation of Genesis of Pb-Zn Deposits in Southeast Chongqing |
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| YANG Hong-zhong,YI Dian-wen,ZHOU Qing-lei,ZHOU Rui-bo.Simple Explanation of Genesis of Pb-Zn Deposits in Southeast Chongqing[J].Acta Geologica Sichuan,2008,28(3):190-196. |
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| Authors: | YANG Hong-zhong YI Dian-wen ZHOU Qing-lei ZHOU Rui-bo |
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| Institution: | YANG Hong-zhong, YI Dian-wen, ZHOU Qing-lei, ZHOU Rui-bo Chongqing (1Southeast Sichuan Geological Party, Chongqing Bureau of Geology and Mineral Resources, 400039; 2- Chengdu University of Technology, Chengdu 610059) |
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| Abstract: | Stratiform, stratoid and lode Pb-Zn deposits in southeast Chongqing are confined to the Lower and Middle Cambrian carbonate rock and controlled by stratigraphical horizon, interstratified fracture zone and structural fissures with the development of wall rock alteration such as dolomitization, silicification, pyritization, limonitization, calcitization, baritization and fluoritization. The ore-forming metals were derived from the basement, secondly, host rock, and sulfur was derived from formation sulfate. Ore fluids was hot brine mixed with formation water. The ore-formation occurred in the Caledonian epoch. The deposits belong to MVT ones. |
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| Keywords: | Pb-Zn deposit ore genesis southeast Chongqing |
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