高分一号卫星数据遥感地质解译  

Geological Interpretation of GF-1 Satellite Imagery

作　　者：张焜[1] 马世斌[1] 李宗仁[1] 刘世英[1] 

机构地区：[1]青海省地质调查院,西宁810012

出　　处：《遥感信息》2016年第1期115-123,共9页Remote Sensing Information

基　　金：中国地质调查局地质调查项目(12120113099200)

摘　　要：针对境外地质矿产调查工作中基础地质资料难以获取的难点,开展了高分一号卫星(GF-1)在境外地质矿产信息提取中的应用研究。在综合前人研究成果及野外验证的基础上,通过各类地质体的影像特征分析,建立了塔吉克斯坦南部地区主要沉积岩、变质岩和侵入岩以及断裂构造、节理、褶皱构造、矿化蚀变带等的遥感解译标志。并于区内西南部新发现一处矿化蚀变带,带内具较强烈的褐铁矿化、高岭土化、角岩化等,且断层交汇处的矿化更加强烈,远离断层则矿化逐渐减弱。研究结果表明,GF-1卫星数据的融合图像(空间分辨率为2m)能够进一步识别各类岩性及矿化蚀变带、节理、断裂、岩脉等,充分展示出我国国产卫星数据在地质矿产勘查领域可以取得很好的应用效果。Based on former results and current field exploration, a study on geological phenomenon and structural characteristics in target area was applied, then interpretation keys for sedimentary rocks, metamorphic rocks, intrusive rocks, joint fault structure,fold structure and mineralized alteration zone in the southern Tajikistan area were formed referring ring geomorphologic landscape,tune,and stripes showed on GF-1 satellite imagery. A mineralized alteration zone was found in the southwest area, where the mineralized alteration zone develops strong alteration, such as ferritization, kaolinization, and angle of lithification. Some alteration adjacent in the belt was identified and analyzed. Furthermore, the mineral composition for those alterations was mapped using GF-1 remote sensing data. The experimental results for remote sensing data indicate that the mineralization and alteration can be enhanced in fault interchange, and the mineralization and alteration can be attenuated far away from fault interchange. The favorable minerals exploration areas were predicted also. The results show that integrated data images from GF-1 is able to identify lithological characters, mineralized alteration zone,joint and faultland vein. At last, the field investigation was introduced and some conclusions were made. It can be seen that the application potential of domestic satellite remote sensing technology to geological exploration is valuable in the future.

关 键 词：高分一号卫星 塔吉克斯坦 解译标志 地质矿产解译 解译精度 

分 类 号：P627[天文地球—地质矿产勘探]