土壤微细粒分离测量技术在黄土覆盖区隐伏金矿勘查中的应用及异常成因探讨  

Fine-grained soil prospecting method for mineral exploration in loess covered areas and discussion on the origin of geochemical anomalies

作　　者：张必敏[1,2] 王学求[1,2] 叶荣[3] 姚文生[1,2] 王玮[1,2] ZHANG Bi-min;WANG Xue-qiu;YE Rong;YAO Wen-sheng;WANG Wei(Institute of Geophysical and Geochemical Exploration, CAGS Langfang 065000, China;UNESCO International Center on Global-Scale Geochemistry, Langfang 065000, China;School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, 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]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 [3]中国地质大学,北京地球科学与资源学院,北京100083

出　　处：《桂林理工大学学报》2019年第2期301-310,共10页Journal of Guilin University of Technology

基　　金：国家重点研发专项项目(2016YFC0600600);国家自然科学基金项目(41573044; 41203038);中国地质科学院基本科研业务费项目(JYYWF201834)

摘　　要：土壤微细粒分离测量技术作为一种能反映深部异常信息的深穿透地球化学技术,已在多种景观区取得成功试验案例。选择豫西黄土覆盖区申家窑金矿开展该技术的应用试验,结果表明:利用该技术所指示的异常范围与已知矿体位置具有很好的对应关系;Au、Ag、As、Sb、Cd、Cu、Pb、Zn等元素可以作为该地区寻找该类型隐伏金矿的找矿指示元素;矿体或岩石解离的化合物或纳米颗粒可穿透黄土孔隙向上迁移至地表,并赋存于地气中或被粘土矿物或铁锰氧化物所吸附而富集形成地球化学异常。The fine-grained soil prospecting method,a deep-penetrating geochemistry method, is used for mineral exploration in covered areas to recognize the anomaly information in earth-surface medium coming from deep orebodies.This study was carried out in Shenjiayao gold deposit which is located in the west of Henan province and covered by loess. The results show that:(1)The geochemical anomalies delineated by fine fraction soils are similar to the location of orebodies.(2)The elements of Au, Ag, As, Sb, Cd, Cu, Pb, Zn can be used as prospecting indicator elements to seek concealed gold deposits in this area.(3)Nano-particles dissociated from orebodies or rocks can migrate from deep to earth-surface through pores in loess and can the found in geogases or clay minerals or iron and manganese oxidesl which formed geochemical anomalies.

关 键 词：土壤微细粒分离测量 黄土覆盖区 隐伏金矿 元素迁移 

分 类 号：P632[天文地球—地质矿产勘探]