铀矿地质2017，Vol.33Issue(5)：280-287,8.DOI:10.3969/j.issn.1000-0658.2017.05.004
攀枝花大田铀矿床年代学特征及其意义
Chronology Characteristics and Significance of Datian Uranium Deposit in Panzhihua
摘要
Abstract
The chronology characteristics of Kangdian typical hydrothermal uranium ore (Datian uranium deposits) were studied by dating the U-Pb age of zircon and uraninite in the surrounding rock,dike in structure belt.Through careful dating,recognition was conclude in the follows:1) the original rock of migmatite in Datian area was formed before middle-late proterozoic (earlier than 900 Ma);2) the migmatization was formed in 840~900 Ma;3) the alkaline alteration belt (F3 tectonic belt) in Datian uranium ore area was formed in the late migmatization which was formed in the age of 820~840 Ma;4) Datian uranium mineralization epoch is about 777 Ma.Formation,development of Kangdian geo-axis and uranium mineralization has close relationship with the formation and evolution of Rodinia continental and tectonic magmatic thermal event caused by its cracking.The tectonic evolution of Datian region has important significance on uranium mineralization.关键词
大田铀矿床/混合岩化/晶质铀矿/年代学Key words
Datian uranium deposit/migmatite/uraninite/chronology分类
天文与地球科学引用本文复制引用
徐争启,张成江,欧阳鑫东,姚建,孙康,尹明辉..攀枝花大田铀矿床年代学特征及其意义[J].铀矿地质,2017,33(5):280-287,8.基金项目
中国核工业地质局重点科研项目"西南三江地区花岗岩铀成矿条件分析"和"康滇地轴中南段混合岩中特富铀矿成矿机制研究"(编号:201637、201638)资助. （编号:201637、201638）
