多元素组合异常向R型因子分析因子矿化类型转化的分析应用

利用多元素组合异常指示元素平均值与大兴安岭森林沼泽区水系沉积物地球化学元素丰度值的差，以及与其所在地球化学子区元素变化系数的乘积关系，度量多元素组合异常指示元素在成矿地质作用中的聚集变化强度；计算多元素组合异常元素变化强度的和，对多元素组合异常进行元素变化强度和的评序，遴选主要组合异常.利用多元素组合异常指示元素蕴涵R型因子分析因子结构组合元素矿化类型的意义，判别多元素组合异常因子矿化类型.依据主要组合异常分布、因子矿化类型以及与测区物探、遥感解译线性、环形构造的关系，建立测区主要组合异常聚集带、聚集区.依照主攻矿种元素、相应主要组合异常因子矿化类型信息和相关成矿地质理论，开展测区多元素组合异常优中选优的找矿验证工作.

STUDY AND APPLICATION OF THE TRANSFORMATION FROM MULTI-ELEMENT ASSEMBLAGE ANOMALIES TO MINERALIZATION TYPES FOR R-FACTOR ANALYSIS

In the stream sediment geochemical survey in the forest-swamp area of Daxinganling Mountains,the authors adopt the mean values,abundances and variation coefficients of elements to measure the concentration and variance intensity of the indicator elements for multi-element assemblage in the ore-forming geological processes. By calculating and sorting for the sum of the variance intensity of elements,the significant assemblage anomalies are selected. The factors of mineralization types are decided by R-factor analysis of multi-element assemblage anomalies of indicator elements. Basis on the distribution of assemblage anomalies,factors of mineralization types,geophysical exploration and remote sensing interpreted linear and circular structures,then,the concentration belts and areas of multi-element assemblage anomalies are delineated. Finally,the optimization and verification are carried out according to the target minerals,factors of mineralization types of main multi-element assemblage anomalies as well as related metallogenic geological theory.