内蒙古卫境地区遥感线性构造分形特征

在综合分析多源地学信息的基础上,利用遥感影像对内蒙古卫境地区进行线性构造目视解译,结合Arc GIS与MATLAB软件对已解译的线性构造进行分形研究,快速获取研究区线性构造的分形维数、不同方向线性构造分形维数及不同区域线性构造分维值,并对计算结果进行了分析。结果表明:研究区内线性构造、不同走向线性构造及不同区域线性构造都具有自相似性;南北向、北西向线性构造分维值较大,复杂性较高,为区域主要构造方向;铀矿化主要分布在分维值0.82的区域内,分维值越大,越有利于热液活动和成矿。

Fractal characteristics of lineaments based on remote sensing in Weijing area, Inner Mongolia

With comprehensive analysis of multi-source geo-science information, visual interpretation of lineaments is carried out by remote sensing images in Weijing, Inner Mongolia. ArcGIS and MATLAB were used to conduct fractal analysis of the lineaments of the study area, and obtain the fractal dimension of lineaments, the fractal dimension of lineaments in different directions, and fractal dimension value of lineaments of different areas. The results indicate that lineaments of the study area, those in different directions and those of different areas all have self-similarity; the NS and NW-trending lineaments have larger fractal dimension and higher complexity, being the dominant structure of the study area; the uranium mineralization is mainly distributed in the region with fractal dimension value greater than 0.82. The greater the fractal dimension is, the more conducive to hydrothermal activity and mineralization it will be.