安徽省全椒县后份王地区地质特征及磁异常地质解译  

Geological features and geological interpretation of magnetic anomalies in Houfenwang area,Quanjiao County,Anhui Province

作　　者：黄进调 HUANG Jin-tiao(Geographic Information Engineering Brigade,Jiangxi Provincial Bureau of Geology,Nanchang 330001,China)

机构地区：[1]江西省地质局地理信息工程大队,江西南昌330001

出　　处：《世界有色金属》2023年第16期108-110,共3页World Nonferrous Metals

摘　　要：全椒县后份王地区处于苏家湾-马厂-琅琊山矽卡岩型铜金矿成矿带内,地层、构造、岩浆岩以及航磁异常等地质、地球物理特征与苏家湾铜矿、马厂铜矿和琅琊山铜矿较为相似,具有形成矽卡岩型及斑岩型铜金矿床的良好条件。为科学评价该区找矿潜力,寻求进一步的找矿突破,在区内开展了以高精度磁法为主要技术手段的铜金多金属矿普查工作,主要取得了以下成果:①系统总结了后份王地区区域地质及查区地质特征;②区内磁异常整体为北东~南西向条带状展布,正负磁异常伴生特征;③通过反演定量计算,结果显示玄武岩产生磁异常与实测磁异常拟合较好。研究成果推定了玄武岩系引起区内磁异常主要地质原因,验证了高精度磁法在该区识别玄武岩的有效性,也为后续寻找与成矿作用相关的中酸性侵入岩体的甄别提供了物性依据。The Houfenwang area in Quanjiao County is located in the Sujiawan-Maqian-Langya Mountain silica-type copper-gold ore formation zone,and the geological and geophysical characteristics such as stratigraphy,tectonics,magmatic rocks and aeromagnetic anomalies are similar to those of Sujiawan copper mine,Maqian copper mine and Langya Mountain copper mine,which have good conditions for the formation of silica-type and porphyry-type copper-gold deposits.In order to scientifically evaluate the potential of the area and seek further breakthroughs,a copper-gold polymetallic ore census with high-precision magnetic method as the main technical means was carried out in the area.The results show that the magnetic anomalies generated by basaltic rocks fit well with the measured magnetic anomalies.The results of the study suggest that the basaltic system is the main geological cause of the magnetic anomalies in the area,and verify the effectiveness of the highprecision magnetic method in identifying basaltic rocks in the area,which also provides a physical basis for the subsequent screening of medium-acid intrusive rocks related to mineralization.

关 键 词：高精度磁测 地质特征 磁异常解译 玄武岩 全椒县后份王地区 

分 类 号：P631[天文地球—地质矿产勘探]