因子得分趋势面分析法提取个旧陡岩地区岩石化探异常

发布时间：2018-03-14 08:15

  本文选题：因子分析　切入点：趋势面分析　出处：《地质科技情报》2016年01期 　论文类型：期刊论文

【摘要】：云南个旧的陡岩一带具有良好的成矿地质条件,是近年来个旧西区地质找矿工作的重点。采用因子分析、趋势面分析对个旧西区陡岩一带1∶1万岩石化探数据进行了处理,重点提取了Sn矿化信息,得出该区异常主要受隐伏岩体和北西向地层、构造控制。R型因子分析表明,F3因子代表Sn-Mo元素组合,反映岩体及热液相关信息;F5因子代表Sn-Sr元素组合,Sr是碳酸盐岩中的常见元素,说明Sn元素部分来源于个旧组和法郎组灰岩地层。利用因子得分趋势面分析提取了局部剩余异常,再对剩余异常进行了多因子叠加处理,最后圈定出Ⅰ,Ⅱ号靶区作为下一步重点找矿区域。
[Abstract]:Gejiu steep rock area in Yunnan Province has good metallogenic geological conditions, which is the focus of geological prospecting in Gejiu Western region in recent years. Factor analysis and trend surface analysis are used to deal with 1: 10 million petrogeochemical data of steep rock area in Gejiu Western region. The Sn mineralization information is extracted emphatically, and the anomaly in this area is mainly affected by the concealed rock mass and the NW direction strata. The structural control. R-type factor analysis shows that the F3 factor represents the Sn-Mo element assemblage. Factor F _ 5 representing Sn-Sr element assemblage is a common element in carbonate rock, indicating that Sn element is partly derived from Gejiu formation and franc formation limestone strata. Local residual anomalies are extracted by factor score trend surface analysis. The remaining anomalies are processed by multi-factor superposition, and the target areas 鈪，

本文编号：1610362