摘要
化探数据的各向异性分析对控矿因素分析具有重要的指示作用。据热液成矿理论,成矿元素含量对数值的空间分布为分数布朗运动,作者采用对数值的变差函数求解变程L、基台C以及Hausdorff维数H,并对其各向异性进行了研究。个旧地区的研究中发现区域范围内Sn等成矿元素的分布受北东向、北西向以及近南北向构造的控制。而矿区范围内,个旧东区还受到近东西向构造的影响,个旧西区则仍表现出北东向构造的控制作用。为个旧西区的新一轮危机矿山找矿工作提供了依据。
Anisotropy of geochemical exploration data has a guide for ore - controlling structure analysis. According to theory of hydrothermal deposit, special distribution of logarithm of element concentration may be a fractional Brown Motion （fMB）. Lag L, sill C and Hausdorff dimension H are extracted from logarithmic semi - variogram to discuss anisotropy. A case study in the Gejiu district of Yunnan province shows regional distribution of ore - forming elements are mainly controlled by NE -, NW - and NS - trending structures. In the local district, regional distribution of ore - forming elements in/he eastern Gejiu is controlled by EW - trending structures, and in the western Gejiu is controlled by NE - trending structures. The results will be helpful for ore prognoses in the western Gejiu.
出处
《地质与勘探》
CAS
CSCD
北大核心
2007年第6期81-85,共5页
Geology and Exploration
基金
横向合作项目:"个旧西区多元信息综合找矿预测研究"
关键词
化探数据
各向异性
分数布朗运动
个旧地区
geochemical exploration data, anisotropy, fractional Brown Motion, Gejiu district, Yunnan
