遥感技术在格陵兰岛西南部费斯肯纳色特一带找矿中的应用  

Application of Remote Sensing Technique to the Prospecting in the Fiskenasset Region of Southwest Greenland

作　　者：杨日红[1,2] 陈秀法[3] 赵宏军[3] 靳娟[4] 

机构地区：[1]国土资源部航空地球物理与遥感地质重点实验室,北京100083 [2]中国国土资源航空物探遥感中心,北京100083 [3]中国地质调查局发展研究中心,北京100037 [4]首都师范大学,北京100048

出　　处：《地质与勘探》2013年第4期751-759,共9页Geology and Exploration

基　　金：863计划重大项目课题(编号2012AA12A308);国外矿产资源风险勘查专项资金项目联合资助

摘　　要：伴随着遥感技术的快速发展,高分辨率遥感找矿技术已成为境外重点调查区或探矿权区矿产资源勘查和支撑我国矿产资源"走出去"战略的重要技术手段。本文在总结格陵兰岛西南部费斯肯纳色特一带铜镍矿和红宝石矿成矿地质特征的基础上,利用QUICKBIRD和WORLDVIEW-2高空间分辨率卫星数据,采用人机交互解译技术,获取了研究区与成矿作用密切相关的基性超基性岩体,结合研究区铜镍矿化和红宝石矿化蚀变特征,并根据铁质蚀变矿物的波谱特性,利用比值法提取了研究区铁质矿物异常信息,同时利用"遥感找矿五要素"技术圈定了铁质蚀变色调异常区。最后,基于控矿/导矿构造、赋矿岩层、铁质矿物异常和蚀变色调异常等遥感示矿信息进行综合找矿分析,圈定了15个遥感找矿有利区,经实地检测与验证,发现基于高分辨率遥感技术获取的遥感示矿信息与区内矿化现象十分吻合,表明所圈定的遥感找矿有利区具有重要的找矿应用价值。With the rapid development of remote sensing technology, the high-resolution remote sensing technique has become an important technical means used in major smwey areas or exploration of mineral resources areas abroad, supporting the China＇ s ＂going out＂ strategy for mineral resources. In this paper, based on previous geological work on copper-nickel mines of the ruby deposit in Fiskenasset of southwest Greenland, we use the QUICKBIRD and WORLDVIEW -2 high spatial resolution satellite data and interactive interpretation techniques to delimit basic-ultrabasic rocks which are closely re- lated to mineralization in the study area. And in combination with the copper nickel mineralization and ruby mineralization alteration characteristics, as well as the ferric altered mineral spectrum characteristics, we utilize the ratio method to extract iron mineral anomalies in the study area. Besides, we use the method ＂Five Elements of Remote Sensing Exploration＂ to delineate ferric contamination anomaly areas. Based on the ore-control/ore-structure, ore- bearing rocks, ferric contamination anomalies and altered tone abnm^aal information, we determine 15 remote sensing prospecting targets. The results of field examination and verification show that the mineralization indicator information from this effort is well consistent with the real case in the work area.. It means that the favorable prospecting zones determined by remote sensing are of great significance to mineral exploration.

关 键 词：格陵兰西南部 基性超基性岩体 铜镍矿和红宝石矿 QUICKBIRD卫星数据 WORLDVIEW-2卫星数据 铁质矿物异常 

分 类 号：P627[天文地球—地质矿产勘探]