摘要
桃山矿田是我国典型的花岗岩型铀矿田,2014年江西桃山地区铀矿勘查区被列入国家级整装勘查区。通过“整装勘查区矿产调查与找矿预测”项目实施,获得了一大批新的基础地质、水系沉积物测量数据。收集与整理几十年来桃山矿田铀矿勘查积累的地质、物探、化探、遥感和放射性测量数据,集成建立了多源信息数据库。基于该数据库,提取了构造、岩体以及放射性测量信息,分析了与铀矿化的相关关系。认为铀矿化与断裂和打古寨岩体关系密切,铀矿床主要位于断裂400 m缓冲区内;已发现的铀矿床、矿化点和异常点绝大部分位于岩体内或岩体外10 km的范围内;铀矿床-矿化点-异常点与航空放射性测量总计数率和钍含量变化的规律不明显,而钾和铀含量关系密切,具有逐渐降低的特点;基于航空放射性测量数据U、Th、K含量等值线图,通过数据处理获得了航空放射性测量数据多元信息综合异常图,为进一步研究航空放射性测量数据与铀成矿关系提供了思路。
Taoshan ore field is a typical granite-type one in China.In 2014,it was listed as a national-level integrated exploration area.A large number of new basic geological and stream sediment measurement data were obtained through the implementation of the project of"Mineral Investigation and Prospecting Prediction in Integrated Exploration Areas".Based on the geological,physical,chemical,remote and radiological survey data accumulated in the uranium exploration of Taoshan ore field for decades,a multi-source information database has been integrated and established.Based on the database,the structure,lithology and radioactivity data were extracted and used to analyze their correlation with uranium mineralization.It is believed that uranium mineralization is closely related to faults and Daguzhai intrusions,and uranium deposits are mainly located within 400 m buffer zone of faults.Most of the discovered uranium deposits,occurrence and anomalies are located within 10 km of the pluton or outside the pluton,they are not obviously related to the airborne total radioactivity count rate and thorium content,but closely related to Potassium and uranium content.Based on the contour map of the U,Th,K content of the aerial radioactivity measurement,a comprehensive anomaly map of the multi-information was obtained through data processing which provided ideas for the further research on the relationship between airborne radioactivity measurement data and uranium mineralization.
作者
孙璐
SUN Lu(CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China)
出处
《世界核地质科学》
CAS
2021年第2期153-161,共9页
World Nuclear Geoscience
基金
核工业北京地质研究院院长青年科技创新基金项目“潜力评价数据集成关键问题研究与应用”(编号:地QJ2002)
中国核工业地质局项目“中国铀成矿区划及找矿战略部署研究”(编号:2021-43-5)联合资助。
关键词
航空放射性测量数据
数据集成
铀矿田
桃山
江西
the aerial radioactivity measurement data
data integration
uranium ore field
Taoshan
Jiangxi
