摘要
遥感技术通过提取蚀变信息、判释和圈定遥感综合优选区,为地质矿产调查提供指导性依据。研究区内主要矿产类型有中低温热液型金矿、海相火山岩型铁矿、矽卡岩型铜钨矿等,围岩蚀变可作为找矿的间接标志。本文基于Landsat-8数据,利用主成分分析法提取出研究区羟基和铁染蚀变信息作为遥感找矿标志,结合地质情况综合分析,圈定了5处遥感综合优选区,在优选区内新发现矿化点1处、矿点1处。结果表明遥感蚀变信息提取可以为金属矿产调查提供有效的依据。
Remote sensing technology provides guiding basis for geological and mineral investigation by extracting alteration information,judging and delineating comprehensive optimal selection of remote sensing.The main mineral types in the study area are middle-low temperature hydrothermal gold,marine volcanic iron ore,skarn copper tungsten ore,etc.The surrounding rock alteration can be used as an indirect sign of prospecting.In this paper,based on Landsat-8 data,principal component analysis was used to extract hydroxyl and iron stain alteration information in the study area as remote-sensing prospecting indicators.Combined with comprehensive analysis of geological conditions,five remote-sensing comprehensive optimal selection areas were identified,and one new mineralization point and one ore point were found in the optimal area.The results show that remote sensing alteration information extraction can provide an effective basis for metal mineral investigation.
作者
陶迎冬
强德霞
TAO Yingdong;QIANG Dexia(Gansu Nonferrous Geological Survey Institute,Lanzhou730000,China;Gansu Forestry Polytechnic,Tianshui741020,China)
出处
《甘肃冶金》
2023年第5期117-119,123,共4页
Gansu Metallurgy
关键词
遥感蚀变信息
羟基蚀变
铁染蚀变
遥感综合优选区
围岩蚀变
矽卡岩型钨铜矿
remote sensing alteration information
hydroxyl alteration
iron staining alteration
remote sensing comprehensive optimal selection
surrounding rock alteration
skarn type tungsten-copper deposit
