| 李源洪,胡涛,王松,袁清松.贵州瓮安—余庆热液型重晶石矿控矿因素与找矿方向[J].贵州地质,2025,42(1):30-39 |
| 贵州瓮安—余庆热液型重晶石矿控矿因素与找矿方向 |
| Ore Control Factors and Prospecting Direction of Hydrothermal Barite Mines in Weng’an-Yuqing Area of Guizhou |
| 投稿时间：2024-10-29 |
| DOI： |
| 中文关键词: 成矿模式 层间破碎带 重晶石 瓮安-余庆 贵州 |
| 英文关键词:Ore forming mode Interlayer fracture zone Barite Weng’an-Yuqing Guizhou |
| 基金项目:贵州省地质矿产勘查开发局地质科研项目资助(编号:黔地矿科合〔2022〕9号) |
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| 中文摘要: |
| 本次研究主要通过对余庆构皮滩地区娄山关组顶部灰岩层间破碎带重晶石矿体特征、控矿构造、含矿岩性及部位进行梳理，结合开展的主微量地球化学和硫同位素研究认识，揭示瓮安—余庆地区层间破碎带重晶石矿的成矿物质来源、构造和地层岩性控矿特征，初步建立成矿模式，总结其控矿因素并进行找矿方向预测。研究表明区内重晶石矿成矿热液来源于大气降水和建造水，Ba源来源于寒武系富Ba膏盐层，矿体产出于娄山关组顶部灰岩及白云质灰岩层间破碎带中，受燕山期断裂与褶皱构造组合控制，矿体产于背斜区域与其同期挤压形成的层间破碎带中，含矿层位为娄山关组，有利容矿岩石为娄山关组顶部厚度适当的灰岩、白云质灰岩。据此建立了初步成矿模式，指出了下一步找矿方向。 |
| 英文摘要: |
| In this paper，the characteristics of the barite ore body，ore control structure，ore-bearing lithology and location of the interlayer fracture zone of the limestone at the top of the Loushanguan formation in the Goupitan area of Yuqing were analyzed，combined with the main and micro geochemistry and sulfur isotope research and understanding，the mineralization source，structure and stratigraphic lithology control characteristics of the barite ore in the interlayer fracture zone in the Weng’an-Yuqing area were revealed，the metallogenic model was preliminarily established，the ore control factors were summarized and the prospecting direction was predictedThe results show that the ore-forming hydrothermal fluid of barite ore in the area comes from atmospheric precipitation and construction water，the Ba source comes from the Cambrian Ba-rich gypsum salt layer，and the ore body is produced in the interlayer fracture zone of limestone and dolomitic limestone at the top of the Loushanguan formation，which is controlled by the combination of Yanshan fault and fold structure，and the ore body is produced in the interlayer fracture zone formed by the anticline area and its simultaneous extrusion，the ore-bearing layer is the Loushanguan formation，and the favorable ore-bearing rocks are the limestone and dolomitic limestone with appropriate thickness at the top of the Loushanguan formationOn thie basis，a preliminary metallogenic model was established，and the next prospecting direction was pointed out |
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