隐伏区土壤化探样品中元素活动态异常值的统计识别  

STATISTICAL RECOGNITION OF MOBILE ELEMENTS ANOMALY IN GEOCHEMICAL SOIL SAMPLES FROM CONCEALED DEPOSIT AREA

作　　者：杨理勤[1] 

机构地区：[1]武警黄金地质研究所,河北廊坊065000

出　　处：《物探化探计算技术》2011年第2期184-188,108,共5页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：武警黄金指挥部黄金专项项目资助(HJ09-06)

摘　　要：建立了隐伏区土壤地球化学测量中元素活动态值异常下限(T)的统计计算方法,定义了点对比值(Ci=xi/T),制定了Ci>1为异常值的统计识别模式。应用新建立的方法,在森林及土壤覆盖景观的金厂矿区进行了实验和应用。由已知区的实验结果表明,土壤中活动态金异常值分布与已知金矿带完全对应,并且在远景区所圈定的金异常区与地质认识相符,部份异常已经钻探工程验证。The calculation method of mobile elements anomaly limit (T) in geochemical soil samples from concealed deposit area was developed. The contrast value( Ci = xi/T) was defined and a statistical identifying mode of the anomaly was established ( singular date was picked out when Ci > 1 ). The method was applied in Jinchang gold deposit area which laid in the forest and black-land zone. The test result showed the mobile in Au anomaly values inosculated ideally with the Au deposits of known. Au anomaly scopes obtained corresponded with geology knowledge in the potential area, and some part was verified by the drill-engineering.

关 键 词：隐伏区 元素活动态 异常值 

分 类 号：P632[天文地球—地质矿产勘探]