二连盆地乌尼特坳陷砂岩型铀成矿古水文地质条件分析
Analyses on paleo hydrogeological conditions of sandstone type uranium metal-logeny in Wennite depression of Erlian Basin
周舰 1李占春 1王常东 1林天发 1唐国龙 1余弘龙 1于兵 1吴燕清 1董小宇1
作者信息
- 1. 核工业二四三大队,内蒙古 赤峰 024000
- 折叠
摘要
本文在分析二连盆地乌尼特坳陷基底、盖层结构特征基础上,对坳陷的古气候古水文地质条件开展研究,包括坳陷中各凹陷的地下水的形成发展史、同生沉积水的形成、分布及演化过程及地静压力系统、水静压力系统对地下水的改造作用.经分析认为,压挤水运动方向与盆缘补给区的含氧含铀水运动方向相反,在其径流过程中,两种不同性质的地下水相遇的混合部位,是水动力条件和水化学环境的变异部位,铀元素在这里富集成矿,并由此提出了铀成矿的有利时期及层位.
Abstract
On the base of analyzing features of basement,cap structure of Wunite Depression in Erlian Basin,the paleoclimate conditions of depression are studied,for example,underwater's formation and development his-tory,forming and development process,reformation effect of geostatic pressure system and hydrostatic pressure on underground water.The terrastatic moving direction contrasts that of oxygenated and uranium-bearing water from recharge areas of the basin margin.Two different property of underwater meet on the mixed parts where hydrodynamic condition and hydrochemistry environment varies during runoff process.Uranium enriched and mineralized in these varied parts.Uranium metallogenic favorable periods and layers are forecasted by this way.
关键词
二连盆地/乌尼特坳陷/砂岩型铀矿/古水文地质条件Key words
Erlian Basin/Wunite Depression/sandstone-type uranium deposit/paleo hydrogeological conditions引用本文复制引用
基金项目
中国核工业地质局铀矿调查项目(202102-6)
出版年
2024
NETL
NSTL
万方数据