贵州威宁县云贵桥铅锌矿床地质特征及找矿潜力分析

杨思涛; 蔡京辰; 何良伦; 岳庭林

杨思涛,蔡京辰,何良伦,岳庭林.贵州威宁县云贵桥铅锌矿床地质特征及找矿潜力分析[J].贵州地质,2025,42(4):438-445

贵州威宁县云贵桥铅锌矿床地质特征及找矿潜力分析

Analysis of the Geological Characteristics and Prospecting Potential of the Yunguiqiao Lead-Zinc Deposit in Weining County，Guizhou Province

投稿时间：2025-09-18

DOI：

中文关键词: 铅锌矿矿床特征，控矿因素后期改造潜力分析云贵桥

英文关键词:Lead-zinc deposit Deposit characteristic One-controlling factor Later reformation Potential analysis Yunguiqiao

基金项目:贵州省地矿局人才培养团队项目“贵州铅锌矿找矿预测与评价科技创新人才团队”(黔地矿科合〔2024〕TD001)联合资助

作者	单位
杨思涛	贵州省地矿局113地质大队,贵州六盘水553000
蔡京辰	贵州省地矿局113地质大队,贵州六盘水553000
何良伦	贵州省地矿局113地质大队,贵州六盘水553000
岳庭林	贵州省地矿局113地质大队,贵州六盘水553000

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中文摘要:

贵州威宁县云贵桥铅锌矿床位于垭都-蟒洞断裂的北西段，是黔西北铅锌矿集区的重要组成部分。依据近年的勘查成果显示，区内铅锌矿赋矿围岩为泥盆系鸡窝寨组(D2 j)细晶白云岩，控矿构造为云贵桥断层(F1)，矿体主要产出于F1断层破碎带及上盘层间破碎带内，分布范围集中于鸡窝寨组一段与F1断层接触部位。本文通过对矿床地质特征进行系统剖析，并初步归纳其控矿因素及成因，研究表明:云贵桥断层F1上盘层间破碎带内的似层状矿体为原地系统先期成矿，为F1断层逆冲推覆整体抬升浅部就位；而F1断层破碎带内的角砾状矿体可见明显的擦痕及滑动镜面等迹象，为成矿后期改造矿体，属深部先存矿体受断层逆冲推覆作用改造、运移再就位的结果，此矿床应属产于碳酸盐岩断裂中的中低温热液充填+改造型矿床。说明F1断层下盘鸡窝寨组层间破碎带具有寻找未被完全破坏的、规模更大、品位更稳定的原生矿体的优越前景。在今后的找矿实践中，以F1断裂下盘深部鸡窝寨组层间破碎带为重点方向，同时兼顾断裂走向延伸部位，有望实现新的找矿突破。

英文摘要:

The Yunguiqiao lead-zinc deposit in Weining County，Guizhou Province，located in the northwestern segment of the Yadu-Mangdong fault zone，is an important component of the lead-zinc ore cluster in northwestern GuizhouRecent exploration results indicate that the host rocks of the lead-zinc mineralization are fine-crystalline dolomites of the Devonian Jiwozhai formation(D2 j)，and the ore-controlling structure is the Yunguiqiao Fault(F1)The ore bodies primarily occur within the fault fracture zone of F1 and the interlayer fracture zone of the hanging wall，with their distribution concentrated at the contact between the first member of the Jiwozhai formation and the F1 faultThis paper systematically analyzes the geological characteristics of the deposit and preliminarily summarizes its ore-controlling factors and genesisThe study reveals that the stratiform-like ore bodies in the interlayer fracture zone of the F1 fault hanging wall represent early-stage in-situ mineralization，which was uplifted and emplaced at shallow depths due to thrust napping along the F1 faultIn contrast，the brecciated ore bodies within the F1 fault fracture zone show clear signs such as striations and slickensides，indicating post-mineralization modificationThese are the result of pre-existing deep ore bodies being transformed，transported，and re-emplaced by thrust napping along the faultThe deposit is classified as a medium-low temperature hydrothermal filling-metasomatic + reworked type occurring in carbonate rock fracturesThis suggests that the interlayer fracture zone of the Jiwozhai Formation in the footwall of the F1 fault has excellent potential for discovering larger，higher-grade，and more stable primary ore bodies that have not been completely disruptedIn future prospecting practices，focusing on the deep interlayer fracture zone of the Jiwozhai formation in the footwall of the F1 fault，while also considering the along-strike extensions of the fault，is expected to achieve new breakthroughs in exploration

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