吉林省集安市花甸地区放射性测量特征分析  

Characteristics of Radioactivity Measurement in Huadian Area,Ji'an City,Jilin Province

作　　者：高雄伟 GAO Xiongwei(Jilin Provincial Bureau of Nuclear Industry Geology,Changchun Jilin 130000)

机构地区：[1]吉林省核工业地质局,吉林长春130000

出　　处：《河南科技》2021年第36期125-127,共3页Henan Science and Technology

摘　　要：全面收集前人有关地质、物探、化探以及放射性成果等资料,在花甸地区进行伽玛能谱测量工作,运用铀、钍成矿理论,综合分析铀、钍成矿规律、赋存地质条件和控制因素,为进一步找矿工作提供依据。铀钍矿化异常与古元古代钱桌沟岩体、集安岩群蚂蚁河岩组地层、强硅化花岗伟晶岩、石英脉等脉岩、北东向断裂构造关系密切。推测古元古代岩浆热液可能为铀钍源层,铀钍异常形成的原因分两种:一种由碱性矿物富集而显示出高放射性;另一种为构造热液活动期间热液沿脉岩、裂隙面侵入蚂蚁河岩组地层中,地球化学环境发生改变,导致铀钍元素局部地段富集。Comprehensive Collection of previous data on geology,geophysical exploration,geochemical exploration and radioactive achievements,gamma-ray spectrometry survey in Huadian area,and application of uranium and thorium metallogenetic theory,the metallogenic regularity,geological conditions and controlling factors of uranium and thorium are comprehensively analyzed to provide basis for further ore prospecting.The uranium-thorium mineralization anom⁃aly is closely related to the Paleoproterozoic Qianzhuogou Pluton,Mayihe formation of the Ji'an Rock Group,the high⁃ly silicified granite-pegmatite,quartz vein and other vein rocks,and the NE trending fault structures.It is speculated that the PALEOPROTEROZOIC magmatic hydrothermal solution may be the source bed of uranium and thorium,and the uranium and thorium anomalies can be divided into two reasons:one is enriched by alkaline minerals and shows high radioactivity.The other is that the hydrothermal solution intruded into the strata along the dikes and fracture sur⁃faces during the tectonic hydrothermal activity,and the geochemistry environment changed,resulting in the local en⁃richment of uranium and thorium.

关 键 词：花甸地区 放射性测量 铀钍矿成矿规律 

分 类 号：P631[天文地球—地质矿产勘探]