现代地质2024，Vol.38Issue(4)：1076-1091,16.DOI:10.19657/j.geoscience.1000-8527.2023.112
内蒙古赤峰柴胡栏子金矿田遥感地质解译和蚀变信息提取与找矿预测
Remote Sensing Geological Interpretation,Alteration Information Extraction,and Mineral Prospecting Prediction in the Chaihulanzi Gold Field,Chifeng,Inner Mongolia
摘要
Abstract
The Chaihulanzi gold field,situated at the northwesternmost end of the Chifeng-Chaoyang gold metal-logenic belt,is an significant gold-producing region in China.However,this region faces harsh natural condi-tions and has seen limited geological studies using remote sensing.Research on the distribution characteristics of key ore-controlling factors(e.g.,strata,structures,and igneous rocks)and alterations of host rocks related to gold mineralization remains relatively scarce.Therefore,utilizing remote sensing technology for prospecting in this ore field is of great significance.This paper uses Landsat 8 and GF-2 remote sensing images,along with the"Principal Component Analysis+Optimal Index Factor"method,to perform remote sensing geological inter-pretation of the Chaihulanzi gold ore field in Songshan District,Chifeng City,Inner Mongolia.Based on the spectral characteristics of altered minerals,a scheme was developed to extract alteration information from Land-sat 8 and Sentinel-2A remote sensing images.The scheme involves removing interference information,extrac-ting anomaly information,grading anomalies,and processing anomaly data.Three prospecting target areas were delineated based on previous regional geological and mining studies,integrating characteristics of alteration in-formation with geological interpretation results.This study shows that using multi-source remote sensing satellite images for geological interpretation and extracting alteration information in the study area generally meets the re-quirements for medium-scale prospecting prediction and comprehensive geological surveys,significantly enhan-cing prospecting efficiency.The research results provide crucial fundamental guidance for future prospecting and exploration in the Chaihulanzi gold ore field.关键词
柴胡栏子金矿田/多源遥感卫星影像/遥感解译/蚀变信息提取/主成分分析/找矿预测Key words
Chaihulanzi gold ore field/multi-source remote sensing satellite imagery/remote sensing interpre-tation/alteration information extraction/principal component analysis/ore prospecting prediction分类
天文与地球科学引用本文复制引用
韩燿徽,王翠芝,吴志杰,吕古贤,张宝林,张启鹏..内蒙古赤峰柴胡栏子金矿田遥感地质解译和蚀变信息提取与找矿预测[J].现代地质,2024,38(4):1076-1091,16.基金项目
内蒙古自治区地质勘查基金管理中心科研项目"内蒙古自治区赤峰市柴胡栏子地区典型矿田构造岩相测量与成矿规律研究"([2019]科研-02) （[2019]科研-02）
校企合作项目"绢云母红外光谱特征的制约因素研究"(BM-2019-08). （BM-2019-08）
