Application of Geochemical Method on the Prospecting Potential Evaluation of West Tianshan Belt in China
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摘要: 以西天山成矿带为例，以1：25万区域化探数据为基础，划分了西天山地球化学域、地球化学区和亚区等地球化学分区，阐述了各分区的地球化学特征。通过分析单元素地球化学异常分布规律，选取与地质矿产评价有关的均方差和异常下限等地球化学参数，结合单元素异常平均值和面积两个参数，综合以上参数，构建了成矿有利度和致矿物质量的概念，用于定量描述异常显著程度和各单元素异常的潜在资源量，通过建立典型矿床模型、模型与异常类比，将预测结果与已知矿产资源量信息进行对比，认为用致矿物质量来定量描述各综合异常的成矿潜力是一种可行的资源潜力评价方法。Abstract: Taking West Tianshan metallogenic belt as an example, based on regional geochemical data,geochemical fields,geochemical regions and subregions are divided, geochemical characteristic is expounded. By studying the distribution of geochemical anomalies, using geochemical parameters Mean Square Errorand Anomaly Threshold which relate to geological mineral evaluation., combining Average Value and Area of geochemical anomaly, built the concepts of Prospecting Favorable Degreesand Quality of Mineral which are used for quantitative description of the extent and potential of each geochemical anomalypotential amount of resources.Throughestablishing typical models of deposits, by analogy of deposit model and geochemical anomaly, comparing the predicted results with the known mineral resource,consider that using the Quality of Mineralto quantitatively describe the ore potential of multi-elementary anomaly is a viablemethod of prospecting potential evaluation.
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