综合地质、地球物理及地球化学信息在桐城吕亭驿地区矿产勘查中的应用  

Application of comprehensive geological,geophysical and geochemical characteristics in mineral exploration in Lyutingyi area,Tongcheng

作　　者：武文杰[1] WU Wenjie(No.327 Geological Team,Bureau of Geology and Mineral Exploration of Anhui Province,Hefei 230011,Anhui,China)

机构地区：[1]安徽省地质矿产勘查局327地质队,安徽合肥230011

出　　处：《资源信息与工程》2022年第6期5-8,12,共5页Resource Information and Engineering

摘　　要：安徽桐城吕亭驿地区中生代岩体及古老变质岩岩系各时代岩石裂隙中普遍见有绿泥石化、绿帘石化,古老变质岩系的破碎带中具有硅化、黄铁矿化、金矿化,岩体中具有黄铁矿化、磁铁矿化、黄铜矿化、辉钼矿化等,有寻找破碎蚀变岩型金矿、多金属矿及斑岩型矿的前景。文章通过分析该区地质特征,并结合地球物理特征和地球化学特征得出找矿方向,认为:1)研究区磁异常主要为片麻岩、二长岩、辉长岩和闪长玢岩等侵入岩引起;2)地球化学异常明显,各元素异常吻合性较好,有待进一步查证;3)北部部分地区地表铜草发育,可能存在铜异常区,推测研究区西北部存在隐伏矿床的可能。In the Lyutingyi area of Tongcheng,Anhui Province,chloritization and epidotization are commonly seen in the rock fissures of Mesozoic rock bodies and ancient metamorphic rock series of different ages.The fracture zone of the ancient metamorphic rock series are characterized by silicification,pyritilization and gold mineralization,and the rock bodies are characterized by mineralization of pyrite,magnetite,chalcopyrite,and molybdenite,etc.,which has the prospect of finding fractured⁃altered⁃rock⁃type gold,polymetallic ore and porphyry⁃type ore.By analyzing the geological characteristics of the study area and combining the geophysical characteristics and geochemical characteristics,this paper summarized the prospecting direction of the research area in multiple ways.conclusions included that:1)The magnetic anomalies in the study area are mainly caused by intrusive rocks such as gneiss,monzonite,gabbro and diorite porphyry.2)The geochemical abnormality is obvious,and the abnormal anastomosis of each element is in a good agreement,which needs to be further verified;3)The development of surface copper grass in some parts of the north area means probable copper anomalies,and it is speculated that there may be hidden deposits in the northwest of the study area.

关 键 词：地球物理特征 地球化学特征 吕亭驿地区 

分 类 号：P618[天文地球—矿床学] P631[天文地球—地质学] P632