青海两兰地区化探异常筛选评价的新方法研究  

NEW METHOD OF GEOCHEMICAL ANOMALY SCREENING AND APPRAISING IN THE WULAN-DULAN AREA,QINGHAI PROVINCE

作　　者：杨利民[1] 杨自安[1] 罗铁良[2] 邹林[1] 付和[2] 

机构地区：[1]有色金属矿产地质调查中心,北京100012 [2]河北中色测绘中心,三河065201

出　　处：《地质与勘探》2007年第5期77-81,共5页Geology and Exploration

基　　金：科技部"十五"科技攻关项目(编号:2003BA612A-04)资助

摘　　要：评价化探异常时,通常主要是依据异常本身的特点或者借助于数理统计方法,但是往往很难清晰地辨别矿致异常和非矿异常,有时甚至连异常所对应的成矿元素也不易确定。针对此问题,本文在筛选评价青海省乌兰—都兰地区的化探异常时,应用系统核和核度理论,对其技术方法进行了充分的分析研究,取得了良好的应用效果,为进一步的异常检查和找矿勘查提供了科学依据。Geochemical anomaly appraisal is mainly on the basis of own character or by means of mathematical statistics method. Frequently, it is difficult to clearly distinguish anomalies related to mineralization and non - ore anomalies. Sometimes, ore - forming elements corresponding to anomaly are also uncertain. Aiming at the problem, theory of system core and core - degree is applied for screening and appraising geochemical anomalies in Wulan - Dulan area, Qinghai province. Good application results are obtained, and can provide scientific reference for next anomaly optimization and ore prospecting.

关 键 词：系统核和核度 化探异常 筛选评价 青海两兰地区 

分 类 号：P632[天文地球—地质矿产勘探]