摘要
在研究中国北方含煤盆地的基础上,对煤田勘查钻孔的放射性异常和航空能谱资料进行了二次开发,分析了此种盆地的含矿性特征,建立了砂岩型铀矿产出的模式地层层序。结果表明该种铀矿形成于较还原的环境中,具有还原性质的灰色砂岩层才是找矿的目标层位;铀矿成矿的含煤盆地按其形成的构造环境分为三类,在不同地质时期,地球上不同纬度的环境演化和盆地所处的大地构造位置是控制铀矿成矿作用分带的基础条件。
Based on the study of the coal-bearing basins in north China, we researched the material radioactive anomalies of drillings and aerial energy spectrum in the basins, analysed the ore-bearing features, and established the model stratigraphic sequence of the sandstone-hosted uranium deposit. It is suggested that the uranium deposit form in a deoxidizing environment, and it is grey sandstone form in deoxidizing environment that is the goal stra- tum for drill prespecting. In different geological period, different latitude environment evolving and basin tectonic position control the ore-forming process.
出处
《地质调查与研究》
2013年第2期81-84,共4页
Geological Survey and Research
基金
中国地质调查项目:华北地区铀矿勘查选区研究(1212011220494)
关键词
中国北方
含煤盆地
砂岩型铀矿
模式地层
放射性异常钻孔
north China
sandstone-hosted uranium deposit
model stratigraphic sequence
radioactive anomaly
