青藏高原北部那曲地区矿产资源遥感地质调查应用研究

以ETM数据、雷达卫星数据为信息源,通过对青藏铁路沿线那曲地区遥感图像室内处理,信息增强,提取构造信息和矿化蚀变信息;结合野外的验证,一方面,验证了室内图像处理、信息提取的质量,另一方面,纠正了原有地质图的一些明显错误;通过遥感图像处理方法,发现遥感影像显示地质构造明显,可以有效地区分岩性、提取地层与隐伏构造信息,新发现一些有利于成矿的远景区和具体矿点。

Application of Remote Sensing technology on mineral resources investigation in the Northern Tibetan Plateau

This article is based on the item of ＂Mineral resources along the Qinghai-Tibet Railway remote sensing survey＂ issued by China Geological Survey Department of Resources Assessment to study. Using of remote sensing technology, we can carry out remote sensing geological interpretation and comprehensive analysis, abnormal screening of remote sensing exploration and the work of field verification in the investigation area, preliminary identification of the regional geological features and ore-forming geological features, providing the basic data for regional mineral resources exploration. Through the remote sensing image processing techniques, by enhancing the information of remote sensing image, we may found the evidence of geological structure on the image, and can distinguish the lithology effectively, extract stratum and information of buried structures, it is beneficial to analyze of the ore formation and delimiting the potential area deposits. The environment of the northern Tibetan plateau is hostile, it may be a tough work by using the traditional method of geology survey. Applied method and procedure of the remote sensing technology are introduced in the regional geological surveying. The procedure consists of remote sensing image integrating and processing with the aid of computers, mapping upon interpretation and interpretational horizon establishment, field verifying, etc. This survey of mineral resources of the region provides a number of useful geological information of remote sensing.