粤北花岗岩型铀矿矿集区糜棱岩带特征及其与铀成矿的关系  

Feature of Mylonite Belt and Its Relation to Granite-type Uranium Deposit in Northern Guangdong Metallization Cluster

作　　者：梁良[1] 李建红[2] 刘成东[1] LIANG Liang;LI Jianhong;LIU Chengdong(East China Institute of Technology,Fuzhou ,Jiangxi 344000,China;Beijing Research Institute of Uranium Geology,Beijing 100029,China)

机构地区：[1]东华理工大学,江西抚州344000 [2]核工业北京地质研究院,北京100029

出　　处：《铀矿地质》2019年第2期73-79,共7页Uranium Geology

基　　金：国家自然科学基金项目(编号:41762016)资助

摘　　要：笔者通过对粤北花岗岩型铀矿矿集区内糜棱岩岩性、显微构造及岩石组构等要素的鉴定及测量,系统研究了糜棱岩带的力学性质和运动学特点,以及其形成的地质环境;根据相关年代学资料,探讨糜棱岩的形成时代及与铀成矿年龄的关系;结合构造地球化学研究,探索岩石组分活化转移与应力、应变的内在联系,揭示了韧性剪切环境下的铀成矿机制。这对该区糜棱岩成因认识的提升和指导找矿实践都具有重要意义。Mechanical property,kinematic character and geological forming condition of mylonite in northern Guangdong granite type uranium metallization cluster were systematically studied through a series of identification and measurements on the lithology,microstructure and petrofabrics.The forming age of mylonite and its relation to uranium mineralization age was discussed with the chronological data from Ar-Ar dating.The inherent relationship between the activation and transfer of rock components to the stress and strain of the geological environment was explored to reveal the mechanism of uranium mineralization in the ductile shearing environment,which can provide guidance for uranium prospection.

关 键 词：糜棱岩带 花岗岩型铀矿 成矿关系 粤北矿集区 

分 类 号：P612[天文地球—矿床学]