吉林大学学报(地球科学版) ›› 2020, Vol. 50 ›› Issue (6): 1660-1674.doi: 10.13278/j.cnki.jjuese.20190058
• 地质与资源 • 上一篇
孙宏伟1,2, 王杰1,2, 任军平1,2, 陈文3, 唐文龙1,2, 古阿雷1,2, 左立波1,2, 邢仕4, 刘子江4
Sun Hongwei1,2, Wang Jie1,2, Ren Junping1,2, Chen Wen3, Tang Wenlong1,2, Gu Alei1,2, Zuo Libo1,2, Xing Shi4, Liu Zijiang4
摘要: 中非卢菲里安地区以铜钴资源闻名于世,同时也赋存一定的铀矿资源。铀成矿作用分别与大陆裂谷及盆地成岩期(876~823 Ma)、早期洋盆形成或大陆碰撞期(720~652 Ma)、卢菲里安变质高峰期(550~530 Ma)相对应。受区域构造活动影响形成的多期次热流体,从基底及加丹加超群富铀岩石萃取铀元素并在构造发育的区域富集成矿为其主要的成矿模式,其变质基底或班委乌卢基底可能提供了铀物质来源,热流体为载体,断裂及穹窿构造则提供通道与空间。含铀矿体多受地层及构造双重控制,围岩褐铁矿化及方柱石化对找矿具有指示意义。研究区内铀矿成矿条件较好,下罗安群受断裂及逆冲推覆构造影响强烈且蚀变较为发育的区域为有利的找矿前景区。
中图分类号:
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