黄土覆盖区隐伏矿地球化学勘查技术试验研究——以河南中河堤银铅锌多金属矿为例  

An experimental study of geochemical exploration methods for concealed deposits in loess overburden area:A case study of the Zhonghedi polymetallic deposit in Henan Province

作　　者：窦备 张必敏[1,3] 叶荣[2] 迟清华[1,3] DOU Bei;ZHANG Bi-Min;YE Rong;CHI Qing-Hua(Key Laboratory of Geochemical Exploration,Institute of Geophysical and Geochemical Exploration,CAGS,Langfang 065000,China;School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China;UNESCO International Center on Global-Scale Geochemistry,Langfang 065000,China)

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所自然资源部地球化学探测重点实验室,河北廊坊065000 [2]中国地质大学(北京)地球科学与资源学院,北京100083 [3]联合国教科文组织全球尺度地球化学国际研究中心,河北廊坊065000

出　　处：《物探与化探》2021年第4期933-941,共9页Geophysical and Geochemical Exploration

基　　金：国家重点研发计划项目(2016YFC0600600);国家自然科学基金项目(41573044);应用地球化学领域国家重点实验室培育基地建设项目(JYYWF201834)。

摘　　要：黄土覆盖区由于较难采到基岩风化的水系沉积物,区域化探反映效果往往不理想,因此在我国很多黄土覆盖区域未开展区域化探工作。本文在河南崤山中河堤银铅锌多金属矿区利用深穿透地球化学方法开展了针对黄土覆盖区的隐伏矿地球化学勘查技术试验研究,采用的土壤微细粒分离测量和金属活动态提取测量结果表明,两种方法都能较好地指示黄土覆盖区下伏多金属矿(化)体异常,同时金属活动态提取方法进一步增强了成矿元素对矿体的异常指示,因而两种方法均可作为黄土覆盖区寻找隐伏多金属矿的有效手段。As it is difficult to collect the weathering stream sediments of bedrock in the loess overburden area,the effect of regional geochemical exploration is often not ideal;therefore,regional geochemical exploration work has not been carried out in many loess overburden areasof China.In this paper,the deep-penetrating geochemistry method was used to carry out the experimental study of geochemical prospecting techniques for concealed deposits in the loess overburden area in the Zhonghedi silver-lead-zinc polymetallic deposit in Xiaoshan,Henan Province.The results of fine-grained soil prospecting method and metal mobile extraction measurement show that both methods can well indicate the anomalies of underlying polymetallic orebodies in the loess overburden area and,at the same time,the mobile extraction method further enhances the abnormal indication of ore-forming elements to the orebody,so both methods can be used as effective means in search for concealed polymetallic deposits in the loess overburden area.

关 键 词：黄土覆盖区 隐伏多金属矿 深穿透地球化学 土壤微细粒分离测量 金属活动态提取测量 

分 类 号：P632[天文地球—地质矿产勘探]