摘要
在研究中国北方主要盆地中伊犁、吐哈、巴音戈壁、鄂尔多斯、二连和松辽6个万吨级以上铀资源基地的基础上,从含铀盆地的时空特征、区域地质、矿床地质等方面入手,对典型砂岩铀矿床成矿特征进行研究,得出砂岩铀矿四个找矿判据,分别是盆地特征判据、目的层砂体判据、砂体地球化学环境判据及微量元素判据.通过这些判据,可更加有效地在铀矿找矿实际中启示找矿思路,开创找矿方法,依据找矿判据信息,确定找矿方向,追索矿化异常,最终落实砂岩铀矿工业矿床分布.
Abstract
Based on the study of six uranium resource bases with a capacity of over 10 000 tons in major basins in northern China,including Ili,Tuha,Bayingobi,Ordos,Erlian,and Songliao,this article studies the mineralization characteristics of typical sandstone uranium deposits from the perspective of spatiotemporal characteristics of uranium bearing basins,regional geology,and deposit geology.Four prospecting criteria for sandstone uranium deposits are obtained,including basin characteristic criteria,target layer sand body criteria,sand body geochemical environment criteria,and trace element criteria.Through these criteria,it is possible to more effectively inspire exploration ideas and create exploration methods in uranium exploration practice.Based on the information of exploration criteria,the exploration direction can be determined,mineralization anomalies can be traced,and ultimately industrial sandstone uranium deposits can be implemented.
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