利用航空伽马能谱数据进行铀成矿预测——以皖南夏林一带为例  

Airborne Gamma Spectrum Data Based Uranium Prognosis:A Case Study of Xialin Area in South Anhui Province

作　　者：董根旺 王琴 黄金辉[1,2] 林曼曼 王猛 田亮[1,2] DONG Genwang;WANG Qin;HUANG Jinhui;LIN Manman;WANG Meng;TIAN Liang(Geophysical Exploration Academy of China Metallurgical Geology Bureau,Baoding,Hebei 071051,China;Institute of Mineral Resources Research,China Metallurgical Geology Bureau,Beijing 101300,China;Institute of Earth Sciences,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国冶金地质总局地球物理勘查院,河北保定071051 [2]中国冶金地质总局矿产资源研究院,北京101300 [3]中国地质大学(北京)科学研究院,北京100083

出　　处：《铀矿地质》2021年第1期87-95,共9页Uranium Geology

基　　金：中国地质调查局“秦岭及天山等重点成矿区带航空物探调查”子项目“安徽青阳-芜湖地区1:5万航空物探(磁、放)调查”(编号:DD2016006645)资助。

摘　　要：航空伽马能谱测量可以快速获得研究区内放射性元素含量特征。笔者利用皖南宣城地区的1:5万航空伽马能谱数据,分析了夏林一带的放射性元素分布特征、铀元素迁移富集规律等,结合地质条件,推断研究区内震旦系-寒武系碳质地层是铀源层和含矿层,有碳硅泥岩型铀矿找矿潜力。结合航空伽马能谱数据,认为铀高和铀高钍低是最直接的铀矿找矿线索。另外,推断区内3处侵入岩尤其是北部刘村岩体内有花岗岩型铀矿找矿潜力。Airborne gamma spectrum survey can quickly obtain the distribution of radioactive element content in the study area.Based on the 1∶50000 airborne gamma spectrum data of Xuancheng area in southern Anhui province,the content of radioactive elements and their migration and enrichment features were analyzed,it was inferred that the Sinian-Cambrian carboniferous rocks are the uranium source and hosting strata in the study area which have the potential of forming carbonaceous-siliceous-argillaceous type uranium deposit.Based on the airborne gamma spectrum data,the area of high uranium but low thorium were circumscribed as the direct uranium prospecting clues.In addition,it is inferred that the three intruded granites in the area,especially Liucun pluton in the north,have prospecting protential for granite type uranium deposits.

关 键 词：航空伽马能谱 放射性元素 碳硅泥岩型铀矿 花岗岩型铀矿 

分 类 号：P631.62[天文地球—地质矿产勘探]