遥感技术在黑龙江呼玛地区金矿找矿中的意义

The significance of remote sensing for gold prospecting in Huma, Heilongjiang

提出了森林茂密、松散覆盖层较厚地区的遥感基础图象制作方法 ;利用热红外波段及生物地球化学遥感技术进行了植被覆盖区与金有关异常信息的提取 ;建立了植被覆盖区遥感构造解译标志 ,解译出 4组线性构造、百余个环形构造和一个大型环块构造 ;将区域构造应力场的演化划分为3个阶段 ,NE-NNE与 NW、近 EW向构造带相互交织成菱形格子状构造是本区构造的基本格架 ;大型环块构造及其周边环形构造和菱格状构造的各“角”区 ,往往是金矿化的发育区 ,植被覆盖区内与金有关异常信息的集中区对金矿找矿有一定指导意义。

The foundamental image processing by remote sensing data is put forward in areas which have dense forest and deep loose sediments. Thermal infrared band and biogeochemical remote sensing methods were used to extract the gold anomaly information in the vegetation covering areas. Remote sensing signs of structural interpretion in the vegetation covering area are established, and four groups of linear, a hundred of annular structures and a large ring structure are interpreted. The evolution of tectonic stress field in the area is divided into three stages. The lozenge grid structure is the foundamental framework in the area which is formed by the cross of NE NNE trending, NW trending and near EW trending fault belts. The large ring structure and its circumferential annular structure, the angular areas of lozenge grid structure are always favourable areas for the gold mineralization. Areas with concentration of Au anomaly information in the vegetation covering areas have a certain guiding significance for gold exploration.