湘东丫江桥铀矿区物化探综合信息找矿预测  

Prospecting Prediction Based on Integrated Information of Geophysics and Geochemistry in Yajiangqiao Uranium area,east Hunan

作　　者：何友宇 黄中元 黄绍琼 吕宇明 徐华清 姜必广 HE Youyu;HUANG Zhongyuan;HUANG Shaoqiong;LÜYuming;XU Huanqing;JIANG Biguang(Institute of Geological and Geographic Information of Hunan Province,Changsha 410007,Hunan,China;Hunan Engineering Research Center for Uranium Exploration Technology,Hengyang 421008,Hunan,China)

机构地区：[1]湖南省地质地理信息所(湖南省地质大数据中心),长沙410007 [2]铀矿勘查技术湖南省工程研究中心,湖南衡阳421008

出　　处：《地质找矿论丛》2024年第2期249-255,共7页Contributions to Geology and Mineral Resources Research

基　　金：中南地区铀矿调查选区及含煤岩系放射性地质环境调查子项目“湖南攸县丫江桥地区铀矿1∶5万放射性测量和1∶5000伽马能谱综合剖面测量”(编号:201601)资助。

摘　　要：湘东丫江桥地区位于华南褶皱系湘桂粤褶皱带东北部,川口—明月峰隆起北段,隶属湘东重要的铀、钼、钨、锡、铜、铅、锌等多金属成矿带内,区内地质构造背景复杂,岩浆活动较强烈。矿区铀矿体与区内花岗岩体关系密切,且靠近岩体矿体厚度越大,受构造断裂带的控制,与铀矿化关系密切的蚀变有云英岩化、水云母化、赤铁矿化。随着找矿难度的日益加大,利用地、物、化、遥等地学信息进行成矿预测,越来越受到地质勘查领域的重视。本文通过对丫江桥地区铀矿的研究,在广泛收集、研究前人工作资料的基础上,结合本次在重点地段开展的1∶1万伽马总量测量结果,对区内地、物、化等多元信息进行分析研究,厘定区内U-^(210)Po-γeU组合异常是有利成矿的地球化学标志,^(210)Po、伽马能谱铀晕空间重叠为铀矿化赋存的有利部位。The Yajiangqiao area is located in the northeastern part of the Hunan,Guangxi and Guangdong fold belt of in the south China fold system,northern part of the Chuankou to Mingyuefeng uplift,belongs to the important uranium-molybdenum-tungsten-tin-copper-lead-zinc metallogenic belt in eastern Hunan,its geological structure background is complex and magma activity is strong.The uranium orebody is close to the granite body in the area,and the orebody is thicker near the rock body,its controlled by the tectonic fault zone,greisenization,hydromicatization and hematiization are close to uranium mineralization.With the increasing difficulty of prospecting,metallogenic prediction by using geological,Geophysical,geochemical and remote geological information,which is more and more attention has been paid to geological exploration.This paper is through the study of uranium deposit in Yajiangqiao area,is based on the extensive collection and study of predecessors works,Combined with the 1∶10,000 total gamma measurements carried out in the key locations,analysis and research the diversified information of geology,geophysical,geochemical multiple information in the region,points out the U-^(210)Po-γeU and combinatorial anomalies is a geochemistry indicator of favorable mineralization in the area,the spatial overlap of ^(210)Po and gamma-ray spectroscopic uranium halo is a favorable site for uranium mineralization.

关 键 词：铀矿区 多参量信息 成矿分析 找矿预测 丫江桥地区 湘东 

分 类 号：P619.14[天文地球—矿床学]