粤北某铀矿勘查区地气测量与γ能谱方法异常特征分析  

A Uranium Exploration in North of Guangdong Area Use Geogas Survey and Gamma Ray Spectrometry to Analyze the Anomaly Characteristics

作　　者：张文宇[1] 周四春[1] 张国亚[1] 

机构地区：[1]成都理工大学核技术与自动化工程学院,成都610059

出　　处：《科学技术与工程》2015年第28期120-124,共5页Science Technology and Engineering

基　　金：国家自然科学基金项目(41074094);国家地调项目(12120113090500)资助

摘　　要：结合核工业290研究所提供资料,布置N、AB、19号、S、4号五条测线,采用地气测量和地面伽马能谱两种方法对勘查区异常特征进行分析。利用伽玛能谱数据为隐伏铀矿的空间展布提供依据,再根据地气数据通过传统地球化学数据处理方法划分出了勘查区未知异常区与矿致异常区。在未知地气异常区和矿致地气异常进行多元统计分析,得出未知异常区与矿致异常区具有较好的相似性,由此可以判定在此勘查区AB测线的20-50 m,130-160 m,590-680 m,S测线480-500 m,590-720 m异常区具有较好的找矿前景。Combined with the institute of nuclear industry 290 providing informations,arrangement of N,AB,19,S,a total of five lines,taking the geogas survey and ground gamma ray spectrometry to analyze the anomaly characteristics of the exploration area. Using the Gamma energy spectrum data provide the basis for concealed uranium space distribution,and then according to enrage data by conventional geochemical data processing method to differentiate the unknown anomaly area and mineralization anomaly area in the exploration. The multivariate statistical analysis is applied to the unknown anomaly area of geogas and mineralization anomaly area of geogas. The result is two areas has good comparability. Thus can determine there has a prospecting prospect at 20 m to 50 m,130 m to 160 m,590 m to 680 m on AB line,and 480 m to 500 m,590 m to 720 m on S line in the exploration area.

关 键 词：Γ能谱测量 地气测量 多元统计 异常特征 

分 类 号：P631.622[天文地球—地质矿产勘探]