铀矿地质2025，Vol.41Issue(5)：853-868,16.DOI:10.3969/j.issn.1000-0658.2025.41.059
粤北热水复式岩体岩石成因及铀矿找矿启示
Petrogenesis of Reshui Complex Pluton in Northern Guangdong and Its Implications for Uranium Exploration
摘要
Abstract
Reshui complex pluton is situated in the south-central portion of China's most significant U-deposit bearing granite of Guidong complex granite.Based on its lithological characteristics,this pluton can be further subdivided into three distinct granite bodies:Reshui,Hongling,and Pingfeng.To elucidate the petrogenesis of Reshui complex pluton and assess its potential for uranium mineralization,this study integrates field geological investigations,zircon U-Pb dating,and whole-rock geochemical analyses.The results indicate that the forming ages of the three granite bodies are 162 Ma±2 Ma,161 Ma±2 Ma,and 161 Ma±1 Ma,respectively,which are regarded as the same period within the error range and interpreted as products of different phase of the same magmatic event,suggesting that Reshui complex pluton were formed in Early Yanshanian.Whole-rock geochemical analyses reveal that this complex pluton are peraluminous to strongly peraluminous granite,derived from the partial melting of Paleoproterozoic clay-rich metapelites under a post-orogenic extensional tectonic setting.Mineralogical and geochemical features confirm that Reshui complex pluton is a typical U-bearing granite in South China with the potential to host economically viable uranium resources.Future exploration efforts should focus on areas characterized by intense hydrothermal activity along the northeast-oriented fault zone and the contact zones between Reshui and Pingfeng granite bodies.关键词
花岗岩型铀矿/产铀花岗岩/岩石成因/热水复式岩体/粤北Key words
granite-type uranium mineralization/U-bearing granite/petrogenesis/Reshui complex pluton/Northern Guangdong分类
天文与地球科学引用本文复制引用
李俊,张跃跃,周堂波..粤北热水复式岩体岩石成因及铀矿找矿启示[J].铀矿地质,2025,41(5):853-868,16.基金项目
中国核工业地质局铀矿勘查项目"下庄矿田接触带型铀矿床成矿机理研究及成矿预测"(编号:202439-6)资助. （编号:202439-6）
