湘西花垣李梅铅锌矿田构造沉积岩相与断裂控矿特征  

Tectonic-sedimentary Lithofacies and Ore-controlling Fault Characteristics of the Limei Ore Field in Huayuan,Western Hunan Province

作　　者：薛长军 吕古贤[2,3] 吕承训 高伟利 XUE Changjun;LÜGuxian;LÜChengxun;GAO Weili(The Second Bureau of Qinghai Nonferrous Metals Geological Exploration,Xining,Qinghai 810007,China;Institute of Geological Mechanics,Institute of Geological Sciences,Beijing 100081,China;School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China;Development Research Center of China Geological Survey,Beijing 100037,China;Inner Mongolia Museum of Natural History,Hohhot,Inner Mongolia 010010,China)

机构地区：[1]青海省有色第二地质勘查院,青海西宁810000 [2]中国地质科学院地质力学研究所,北京100081 [3]中国地质大学(北京)地球科学与资源学院,北京100083 [4]中国地质调查局发展研究中心,北京100037 [5]内蒙古自然博物馆,内蒙古呼和浩特市010010

出　　处：《现代地质》2025年第1期146-157,共12页Geoscience

基　　金：中国地质科学院矿产资源研究所基金项目(12120113091400);国家科技支撑课题项目(2011BAB04B07-03)。

摘　　要：李梅铅锌矿床是我国重要的超大型铅锌矿床之一,具有较高的经济价值和科研意义。通过对该区域控矿构造特征、地层序列及沉积构造特征的系统研究,发现花垣断裂在寒武纪时期形成的同沉积断层对矿床的发育起到了关键作用。寒武系清虚洞组的含矿沉积岩相被归类为枢纽带碳酸盐岩体系,其中主要岩相为藻礁灰岩,相应的微相包括台地边缘滩相与藻礁相。研究表明,藻灰岩中的裂隙构造发育明显,矿化作用较强,尤其在网状小构造高度发育的区域,通常形成富集的铅锌矿体。综合认为,矿床的成矿过程受到构造因素及藻礁相、相邻浅滩相的严格控制。研究成果为区域铅锌矿资源的勘探与开发提供了一定的科学依据。Limei Pb-Zn deposit ranks among the most significant super-large lead and zinc deposits in China,holding substantial economic value and scientific relevance.By analyzing the characteristics of ore-controlling structures,stratigraphic sequences,and sedimentary structures,the study identified the Huayuan fault as a synsedimentary fault formed during the Cambrian period.The Cambrian Qingxudong Formation in the Limei ore field is classified within the carbonate system of a hinge belt setting,where the primary lithofacies are algal reef limestone facies,while the associated microfacies include platform edge beach facies and algal reef facies.The development of fracture structures in the algal limestone exhibits notable mineralization,particularly in areas with dense network structures,which frequently lead to the formation of rich lead-zinc ore bodies.Overall,the mineralization process of the deposit is strictly controlled by the structural factors,algal reef facies,and adjacent shoal facies.This research provides valuable insights for the exploration of lead-zinc mineral deposits in theregion.

关 键 词：花垣断裂 同沉积断层 构造-沉积岩相 李梅矿区 

分 类 号：P613[天文地球—矿床学] P618.42[天文地球—地质学]