物探与化探2025，Vol.49Issue(4)：818-825,8.DOI:10.11720/wtyht.2025.1317
安徽石台地区碳硅泥岩型铀矿目标层伽马能谱异常特征及其与铀成矿关系
Anomaly characteristics in gamma-ray spectra and their relationship with uranium mineralization for target layers in carbonaceous-siliceous-argillaceous rock-hosted uranium deposits in Shitai area,Anhui Province,China
摘要
Abstract
The Shitai area in southern Anhui Province,China is located in the eastern part of the Xiushui-Ningguo carbonaceous-sili-ceous-argillaceous rock-hosted uranium metallogenic belt.The frequent activity of fault structures in this area contributes to great urani-um mineralization potential.To explore the uranium resource potential in the Shitai area,this study conducted 1∶50 000 ground-based gamma-ray spectrometry.Accordingly,this study extracted metallogenic information using traditional statistical methods and difference analysis of uranium content,followed by the analysis of the distribution characteristics of radioactive elements.Then,this study ana-lyzed the radioactive anomalies in the four members of the Hetang Formation based on the spectra and geological profiles.The analytical results revealed that the highest uranium content occurs in the first member of the Hetang Formation.By combining field geological sur-veys and microscopic petrographic analyses,this study further investigated the geological characteristics of the first member,as well as their potential relationships with uranium mineralization.The results indicate that the Hetang Formation serves as the primary uranium source in the Shitai area,with its first member identified as the main ore-bearing layer.This member is rich in ore-forming materials including organic matter,clay minerals,and pyrite,creating favorable conditions for uranium enrichment.The in-depth research on the target layer will provide technical guidance for exploring the same type of uranium deposits in this area.关键词
伽马能谱特征/地质剖面/碳硅泥岩型铀矿/石台地区Key words
gamma-ray spectrum characteristic/geological section/carbonaceous-siliceous-argillaceous rock-hosted uranium deposit/Shitai area分类
天文与地球科学引用本文复制引用
周乾,刘琛琛,杨彪,方翔宇,周忠平..安徽石台地区碳硅泥岩型铀矿目标层伽马能谱异常特征及其与铀成矿关系[J].物探与化探,2025,49(4):818-825,8.基金项目
安徽省公益性地质调查基金项目"安徽省池州市葛公镇-占大镇一带铀矿调查评价"(2021-g-1-1) （2021-g-1-1）
