沟系土壤测量在贵州大厂矿田普晴锑金矿区地质找矿中的应用  

APPLICATION OF SOIL GEOCHEMISTRY OF DRAINAGE SYSTEM FOR ORE PROSPECTING IN THE PUQING SB-AU OREFIELD

作　　者：郝百武[1] 薛传东[1] 韩润生[1] 刁理品[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《地质与勘探》2008年第6期73-78,共6页Geology and Exploration

基　　金：国家财政部项目(编号:295050028-6);国家自然科学基金项目(编号:40772067)资助

摘　　要：通过对贵州睛隆县大厂矿田西部普晴锑金矿区的成矿地质特征及自然景观条件的调查研究，认为该区为中高山湿润剥蚀景观区，适合开展沟系土壤测量。通过方法实验，提出了沟系土壤测量的关键技术指标，即：采样介质为沟系两侧残坡积物、冲刷物，采样层位为B层；采样密度为30—50个／km^2，样品加工粒度为20目。利用STASTIC软件对测试数据的常用对数值进行R型因子分析，得到4个F因子组合，圈定了。3个异常区。根据对元素异常下限值及F因子组合异常的评价分析，筛选出3个Sb、Au找矿靶区，可作为下一步地质找矿的依据。Based on geotagy and nature landscape in the Puqing Sb-Au orefield in the western Daehang ore district of Qinglong country, it is founded that the area belong to secondary mountain humid sight district of denudation, and soil geochemistry measurement of drainage system for ore prospecting can be conducted. Through method experiments, the key technical rule of soil geochemistry measuring in drainage system has been put forward. Sampling targets are talus and scour materials in two sides of drainage system, and sampling position is B layer soil. Sampling density is thirty to fifty samples per square kilometer and granularity of sample machining is 20 mesh. Through R type factor analysis to the common logarithm of measuring data using STAS- TIC software, three abnormal areas have been cycled. After evaluating abnormal lower limit value of element and F type＇ factor combination abnormal, three antimony and gold mineralizing targets have been delineated, which can be provided for future ore prospecting.

关 键 词：沟系土壤测量 R型因子分析 异常图定 成矿地质特征 普睛锑金矿区 贵州 

分 类 号：P632[天文地球—地质矿产勘探]