在上覆透水层，由于地表水的参与形成复杂的气水地球化学垒，使铀沉积成矿。
Because of the complicated gas-water geochemical barrier formed by the involvement of surface water, the precipitation of uranium occurred in overlying aquifers to form uranium deposit.
国外研究主要集中在水文地质模型的建立和利用水化学方法对泉水地球化学特征进行分析。
At abroad, research mainly concentrates on establishing hydrogeological model and using chemical methods to analyze chemical characteristics of springwater.
从鄂尔多斯白垩系盆地地下水地球物理勘查特点出发，分析了该地区地球物理勘查所要解决的两大问题：①查明白垩系盆地地层分布特征；
Stratigraphic distribution and groundwater quality are two key problems which need to be solved in the geophysical prospecting for groundwater in Ordos Cretaceous Basin.
从鄂尔多斯白垩系盆地地下水地球物理勘查特点出发，分析了该地区地球物理勘查所要解决的两大问题：①查明白垩系盆地地层分布特征；
Stratigraphic distribution and groundwater quality are two key problems which need to be solved in the geophysical prospecting for groundwater in Ordos Cretaceous Basin.
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