区域地球化学元素分布与组合求异方法

摘要

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 a-nomaly 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.%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.