高分遥感数据在胶东水道地区金成矿远景区圈定中的应用研究  

Application research of high-resolution remote sensing date in the delineation of gold metallogenic potential areas in Shuidao area of Jiaodong Peninsula

作　　者：邹键 唐文龙 王凤华[3] 胡峰 薄军委 王志新 刘治 魏绪峰 李勇 ZOU Jian;TANG Wenlong;WANG Fenghua;HU Feng;BO Junwei;WANG Zhixin;LIU Zhi;WEI Xufeng;LI Yong(No.3 Exploration Institute of Geology and Mineral Resources,Yantai,Shandong,264004;Tianjin Center,China Geological Survey,Tianjin,300170;Shandong GEO-Surveying&Mapping Institute,Jinan,250013)

机构地区：[1]山东省第三地质矿产勘查院,山东烟台264004 [2]中国地质调查局天津地质调查中心,天津300170 [3]山东省地质测绘院,济南250013

出　　处：《地质论评》2022年第6期2336-2348,共13页Geological Review

基　　金：中国地质调查局地质调查项目(编号:DD20160044、DD20190155);山东省地质矿产局科技攻关项目(编号:KY201501);烟台市自然资源和规划局战略性矿产勘查项目(编号:SDYTSJ2021-0105-02-1);山东省2020年度省级地质勘查项目(编号:SDGP370000202002001782-A16)的成果。

摘　　要：近年来遥感技术在分辨率、蚀变信息提取和覆盖能力方面有了大幅提升,已成功应用于国内外自然资源调查领域,并取得了不错的效果,遥感解译正成为地质调查工作中不可或缺的一种工作手段。水道地区位于华北克拉通东南缘与苏鲁造山带东北缘的衔接部位,是胶东牟平—乳山金矿带的核心地段,金矿资源丰富,目前运用遥感解译及信息提取技术开展该区的地质找矿工作较为薄弱。笔者等利用ENVI5.3遥感图像处理与分析软件对ASTER(先进星载热辐射与反射辐射计,Advanced Spaceborne Thermal Emission and Reflection Radiometer)、GF-1共9景遥感数据进行处理,使制作的图像信息逼真、线性构造明显,共解译线性构造929条、环形构造89个、韧性剪切带15条,其中北北东向断裂、环形构造和韧性剪切带边缘地段是金矿床产出的有利部位;基于ASTER数据采用“去干扰异常主分量门限技术”进行主成分分析,提取了铝、镁羟基和铁染异常信息,圈定异常浓集区36处,金矿床产出位置一般发育较强铝、镁羟基(Al—OH、Mg—OH)异常;结合区域金矿成矿规律开展了成矿预测,圈定金成矿远景区12处,经野外查证,新发现金矿点2处。遥感技术可为区域矿产地质调查提供强有力的技术支撑。Objectives:GF-1 and ASTER(Advanced Spaceborne Thermal Emission and Reflection Radiometer)remote sensing data were used to extract ore-control information,identify ore-control structures,extract alteration information such as Al—hydroxyl,Mg—hydroxyl and iron stain anomalies for Shuidao area with serious coverage of Muping—Rushan gold metallogenic belt,and prospected ore-forming prospective areas combined with metallogenic geological conditions,then carry out field geological verification.Methods:GF-1 and ASTER remote sensing data and field geological survey.Results:Remote sensing interpret 929 linear structures,89 annular structures and 15 ductile shear zones;extract 26 hydroxyl anomalies and 10 iron stain anomalies;12 prospective areas have been prospected.Conclusions:Gold deposits usually locate in the NNE faults,the edge of the annular structures and ductile shear zones.Iron stain anomalies located in the south and the north of the study area and not obvious relationship with mineralization.Al—hydroxyl and Mg—hydroxyl anomalies were distributed in the central of the study area,which were obviously related to the fault and annular structure.They were banded and arc-banded,which were presumed to be caused by alteration minerals in the fault zone,and many gold deposits were produced.The remote sensing anomalies of block or point distribution are presumed to be caused by intrusive rock.Combined with the regional gold metallogenic regularity and the obtained results,the gold metallogenic prediction is carried out,12 prospective areas have been prospected,the field verification shows well effect.

关 键 词：GF-1和ASTER遥感数据 地质构造解译 遥感异常信息提取 成矿预测 胶东半岛 牟平—乳山金矿带 

分 类 号：P618.51[天文地球—矿床学]