The natural soda water occurs mainly in the pore-fissure confined aquifer of the clastic rock of Nenjiang group, Upper Cretaceous.
天然苏打水主要赋存于上白垩统嫩江组碎屑岩孔隙裂隙承压含水层中。
In the research area, the primary surface formation are the Archeozoic - Proterozoic Jiaonan group there are kinds of Clastic rocks and Volcanic rocks in the metamorphite and Mesozoic Cretaceous.
研究区内出露的地层以太古界——元古界胶南群的各类变质岩和中生界白垩系各类碎屑岩和火山岩为主。
Permian system in Tazhong area may be divided into three lithology groups: lower clastic group, volcanics group and upper clastic group based on the data of core, drilling, logging and so on.
前言： 依据岩心、钻井、测井等资料，将塔中地区二叠系分为三个岩性组：下碎屑岩组、火山岩组、上碎屑岩组。
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