因子分析在划分成矿远景区中的应用探讨——以甘肃文县地区为例

Discussion on the application of factor analysis in the classificationof mineralization prospective area:a study case of Wenxian area in Gansu

水系沉积物地球化学数据蕴含丰富的地球化学背景信息,因子分析是研究元素共生组合的有效手段和方法。以甘肃省文县地区1∶5万水系沉积物测量数据为例,通过充分提取样品中蕴含的地球化学信息,研究因子得分的空间分布规律,划分3个成矿远景区。通过野外实地勘查发现,原有矿床位置与成矿远景区高度吻合,且在远景区内均有发现不同程度的矿化线索。

The geochemical data of stream sediment survey contains the rich background information.Factor analysis is an effective method to study the symbiotic combination of elements.According to an example of data treatment in 1∶50,000 stream sediment survey in the Wenxian area of Gansu Province,by the exaction of the geochemical information contained in the analysis data,and the study of the spatial distribution of factor scores,three mineralization perspective areas are divided.Through the field investigation,it is found that the original deposit is highly consistent with the location of the mineralization perspective area,and there are various degrees of mineralization clues found in the perspective area.