摘要
近几年的区调和普查工作证实 ,吐哈盆地西南部具有良好的砂岩型铀矿成矿前景 ,为查明砂岩型铀矿含矿岩系所属地层的时代归属 ,对其所含孢粉化石进行了鉴定与研究 ,结果表明为双束松粉属Pinuspollenites 云杉粉属Piceaepollenites 冠翼粉属Callialasporites组合 ,对应层位为下侏罗统八道湾组 ,反映温湿气候下的沉积产物。应用层序地层学的原理和方法 ,根据大量的钻孔岩芯和测井资料 ,并结合剖面露头观测 ,对含矿岩系进行了地层的划分与对比 ,为铀资源的准确预测和评价打下基础。
Regional geological surveying and drilling evaluation in recent years show that there are very large potential resources of sandstonetype uranium deposit in the southwestern part of TurpanHami basin. For finding out the age of orehosting rock series of sandstonetype uranium deposit, the sporomorph in rocks is identified and studied. The study shows that it is an assemblage of PinuspollenitesPiceaepollenitesCallialasporites, corresponding to the Badaowan Formation of Lower Jurassic, and the paleoclimate was warm and moist. Based on the principle of sequence stratigraghy, according to the data of numerous drilling cores, well logging information, and outcrop observation, this paper sets up a division and correlation in orehosting rock series. All the above mentioned has laid an important foundation for the accurate prediction and the evaluation of uranium resources in this region.
出处
《铀矿地质》
CAS
CSCD
2000年第5期272-279,共8页
Uranium Geology
关键词
砂岩型铀矿
孢粉组合
地层时代
层序地层
Sandstonetype uranium deposit, Sporopollen assemblages, Age of strata, Sequence stratigraghy
