新疆哈密黄山地区多金属矿床遥感地质信息提取与找矿模式研究

东天山地区是我国重要的矿产资源远景区，蕴藏着金、铜、镍、钼等矿种，其独特的地理特点非常有利于遥感找矿研究。在分析黄山地区多金属矿床研究资料的基础上，利用ETM影像进行遥感找矿研究，拟建立适合该区的遥感找矿模式，实现该区快速、节省资源勘探目标。研究的方法步骤为：首先对影像进行滤波处理提取区域构造信息，确定找矿远景区；进而利用与金属矿化有关的蚀变岩的ETM双峰波谱特性，采用比值主成分变换技术对已确定的成矿远景区进行蚀变信息提取，从而缩小勘探范围，确定勘探靶区，在此基础上建立该区多金属矿床资源勘查的遥感找矿模式。

Remote Sensing Exploration Model on Polymetallic Mineralizations in Huangshan Area,Hami Region

The easten Tianshan aera is rich in Au, Cu, Ni, and Mo mineral resources. Due to the large area,it is time-consuming and relatively expensive to explore the mineral deposits by only using the traditional methods. The remote sensing approach, which can allow for synoptic and repetitive coverage of large areas in a cost-effective way, has become an attractive tool for exploring the mineral resources. In our study, based on the existing geological data, the LANDSAT-ETM image was used as a remote sensing technique, which is very rapid and sensitive for such an arid area with low vegetation cover. Firstly, the tectonic information was extracted by applying convolution filters to the ETM image. Based on the filter results, a potential mineralization area was determined. Next, in the area determined, the alteration information was extracted by combinging a ration of ETM bands with principal component analysis. Hence the target district for exploring was found, and an remote esnsing exploration model for Huangshan ploymetallic mineralization area was established.