区域地球化学元素分布与组合求异方法

在与单元素异常处理方法比较基础上，应用多元素空间分布与空间定量组合求异方法，以吉林白山地区1∶ 20 万化探测量数据处理分析为例，进行空间定量组合求异模型研究，建立了该区的中大比例尺因子--泛克里格模型，应用DEM 原理表达三维元素空间分布模型，并给出地质解译。结果表明: 多元空间定量组合求异法较传统单元素求异法不仅精度更高，更能反应元素空间的内在结构与关联性，且提供了更多的地学信息，尤其使DEM 的三维表达更为直观。

Distribution of regional geochemical elements and combination anomaly method

On the basis of comparing with single-element anomaly method,taking 1/200,000 geochemical exploration data of Baishan area in Jilin as the example,the authors studied the spatial quantitative combination anomaly model,established the medium-large scale factor Pan-Kriging model in this area,applied DEM to express 3D element spatial distribution model and gave out geological interpretation with multi-elements spatial distribution and spatial quantitative combination anomaly methods.The results showed the multi-spatial quantitative combination anomaly method was higher in accuracy,better in internal structure and correlation and more in geo-information than traditional single element method,especially the three-dimension expression of DEM was more intuitive.