中文摘要：

蒙古国扎门乌德地区位于重要的活动大陆边缘斑岩系列Cu、Mo、Au成矿带内,区域地理位置与气候条件较差,地质工作程度低,前期进行遥感地质找矿工作意义重大。通过分析该区域成矿地质条件,利用ETM数据的特点,对研究区进行了线、环构造解译,运用分形几何学的原理和方法对研究区的遥感线性构造进行定量分析,采用线密度-面积分形法计算出研究区线-环构造异常区,得出该区线-环构造密度具有良好的统计自相似性和分形特征,同时采用主成分与灰度-面积分形法提取了该区泥化、铁染蚀变异常信息;本文建立了以断裂为主,环形控制,蚀变定位的遥感信息综合找矿思路,通过野外验证,取得了较理想的成果。

英文摘要：

Zamyn-Uud area of Mongolia is located in an important active continental margin porphyry Cu,Mo,Au mineralization zone. Poor geographic and climatic conditions of this area and the low degree of geological work make preliminary remote sensing prospecting work significant. By analyzing the regional metallogenic geologic conditions,line and ring structures are interpreted based on ETM data and the method of fractal geometry is utilized to quantitatively analyze these lines. The linear density-area fractal method is used for the first time to calculate the line-ring structure anomaly areas and density of the line-ring structures has good statistical self-similarity and fractal characteristics. Then principal component and gray- area fractal methods are used to extract argillization and iron staining alteration anomalies. In this study, a fracture-based, ring-controlled and alteration-positioned remote sensing prospecting idea is established, which proved to have satisfactory effect through field verification.