摘要
地电化学提取技术是通过施加人工电场,破坏地下岩石中离子的动态平衡,促使离子由深部向离子吸收器迁移,通过测量离子吸收器中的元素含量,发现与隐伏矿体相关的元素异常,从而指示找矿。赫章猪拱塘铅锌矿是中国十分重要的超大型铅锌战略矿产地,其外围和深部仍具有较好的成矿背景,为优选猪拱塘铅锌矿中部川洞测区的找矿靶区,在此地区运用地电化学提取技术开展成矿预测工作。本文通过对地电提取元素进行统计学分析,分析出Pb、Zn元素为区内成矿有利元素,通过R型聚类分析和因子分析,并结合实际地质情况,划分出Cd-Zn-Mn-Pb、As-Ti-V、Cu-Ni共3组成矿元素组合。采用含量-频数分形法求取单元素异常下限,结合地质背景、元素异常特征以及土壤离子电导率异常圈定出3个成矿预测靶区。研究成果可为川洞测区钻探验证提供依据,同时填补了地电提取技术在该区运用的空白。
Geoelectrochemical extraction technology is to destroy the dynamic balance of ions in underground rocks by applying artificial electric field,so as to promote the migration of ions from deep to ion absorber.By mea-suring the element content in ion absorber,the element anomalies related to concealed ore bodies are found,so as to indicate prospecting.The Zhugongtang lead-zinc deposit in Hezhang is a highly significant and extremely huge stra-tegic lead-zinc deposit in China.Its periphery and deeper sections still exhibit a favorable metallogenic back-ground.In order to optimize the prospecting target area of the Chuandong survey area in the middle of the Zhugong-tang lead-zinc deposit,Geoelectrochemical extraction technology was used to carry out a metallogenic prognosis.Based on the statistical analysis of the elements extracted from geoelectricity,Pb and Zn were decided as the favor-able elements to be mineralization.Three mineral element combinations(Cd-Zn-Mn-Pb,As-Ti-V,Cu-Ni)were decided based on the actual geological conditions,R cluster and factor analysis.The content-frequency fractal method was used to calculate the threshold of single-element anomaly.Three metallogenic prognosis target areas were delineated by combining geological background,element anomaly properties and soil ion conductivity anomaly.Through this study,it can provide a basis for drilling verification in Chuandong survey area,and fill the gap in the application of geoelectric extraction technology in this area.
作者
鲁承业
欧阳菲
谢小峰
苏特
LU Chengye;OUYANG Fei;XIE Xiaofeng;SU Te(College of Earth Science,Institute of Concealed Mine Prospecting,Guilin University of Technology,Guilin 541004,Guangxi,China;104 Geological Team,Bureau of Geology and Mineral Exploration and Development of Guizhou,Duyun 558000,Guizhou,China;103 Geological Team,Bureau of Geology and Mineral Exploration and Development of Guizhou,Tongren 554300,Guizhou,China)
出处
《矿产勘查》
2025年第7期1717-1729,共13页
Mineral Exploration
基金
“十三五”国家重点研发计划课题深部铀成矿信息识别技术研究(2017YFC0602604)
“毕节试验区赫章县猪拱塘铅锌矿深部及外围地质三维空间调查评价(黔自然资函[2022]427号)”联合资助。
关键词
铅锌矿
地电化学提取技术
异常特征
成矿预测
赫章猪拱塘
lead-zinc deposit
geoelectrochemical extraction technology
anomaly properties
metallogenic prognosis
Hezhang Zhugongtang
作者简介
第一作者:鲁承业,男,1998年生,硕士生,主要从事勘查地球化学研究工作,E-mail:1696459171@qq.com;通讯作者:欧阳菲,男,1980年生,博士,副教授,主要从事勘查地球化学研究工作,E-mail:ouyfglut@qq.com。
