THE APPLICATION OF REMOTE SENSING TECHNIQUE ON GEOLOGICAL INVESTIGATION OF PLACER DEPOSIT

The practice has proved that it is an economic and effective method to investigate placer gold deposit by using multi-level information sources of remote sensing and multi-variate analysis methods, especially for the area with a sparse population and difficult condition like the Da Hinggan Mountains, China.The information sources used in our work includes Landsat TM, aerial infrared photography and their mosaic image maps and enlarged photos with different scales. According to statistic data, in the study area the gold-bearing rocks are mainly granite, alaskite, granodiorite and some old metamorphic rocks. On gold-bearing geological structures, the fault zones in the four directions (NE, NNE, NW and EW) are obvious, in which NNE and EW are the most key fault zones. On fluvial geomorphology the flow courses stored placer are in the tributaries of the 4th and 5th levels, especially in straight or slight curve reaches. On the basis of analysis the interpretative signs were set up, and the interpretative

黑龙江省呼玛地区TM图像解译新发现及其找金意义

通过呼玛地区ＴＭ图像解译新发现的分析，阐述了其对原生金矿找矿的意义。

EH4电磁成像系统在金矿勘探中的应用——以黄金洞金矿为例

EH4目前是国内外电磁勘探系统中较先进的找矿技术之一,特别是在寻找隐伏矿体具有较好的效果。本文应用EH4电磁勘探找矿技术,在黄金洞金矿进行了深部以及断裂破碎带的找矿勘探应用,认为EH4电磁成像系统在矿产勘察中具有强大的工作能力。

利用遥感等手段圈定紫金山铜金矿床外围找矿有利区

为了对福建省上杭县紫金山铜金矿床及其外围进行矿产资源潜力评价,以1∶5万地质图为基础,利用2001年获取的Landsat ETM+图像对该区域进行线性构造、环形构造、火山构造及侵入岩的遥感解译;并结合遥感蚀变异常信息以及物探、化探、重砂等资料,在936 km2范围内圈出6处找矿有利区,为该区域进一步找矿提供了新的线索。