论文部分内容阅读
Uranium contents and ~(234)U/~(238)U ratios have been determined on 29 water samples from the Taiyuanarea,Shanxi Province.The results show that the same artesian aquifer has similar uranium contents and~(234)U/~(238)U activity ratios,and the deeper aquifers have higher A.R.values but lower uranium contents.The A.R.values increase slightly towards groundwater flow in the artesian aquifers dominated by oxidizingground waters.The Lancun Spring and the famous Jinci Spring belong to two different karst groundwater systems,i.e.,the east and west karst groundwater systems.The recharge area of the Lancun Spring should cover the widelimestone outcrops of middle Ordovician in the northeast.The Ordovician fissure-karst ground water to theJinci Spring is extensively mixed with fissure water in Carboniferous-Jurassic formations and seepage waterfrom the Fenhe River.
Uranium contents and ~ (234) U / ~ (238) U ratios have been determined on 29 water samples from the Taiyuanarea, Shanxi Province.The results show that the same artesian aquifer has similar uranium contents and ~ (234) U / ~ 238) U activity ratios, and the deeper aquifers have higher ARvalues but lower uranium contents. ARvalues increase slightly towards groundwater flow in the artesian aquifers dominated by oxidizingground waters. The Lancun Spring and the famous Jinci Spring belong to two different karst groundwater systems, ie, the east and west karst groundwater systems. recharge area of the Lancun Spring should cover the widelimestone outcrops of middle Ordovician in the northeast. Ordovician fissure-karst ground water to the Jinci Spring is extensively mixed with fissure water in Carboniferous- Jurassic formations and seepage waterfrom the Fenhe River.