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摘要: 鄂尔多斯盆地是我国西北地区的大型构造沉积盆地,以前寒武系变质岩为基底,依次沉积了下古生界碳酸盐岩、上古生界-中生界碎屑岩和第四系沉积物,总厚度达6000m。根据盆地的地质构造特征和水文地质条件,将含水岩系划为周边寒武-奥陶系碳酸盐岩裂隙岩溶含水层系统、白垩系碎屑岩裂隙孔隙含水层系统和盆地东部基岩裂隙水与上覆第四系松散层孔隙含水层系统。然后系统论述了各含水层系统特征,区域地下水形成与演化规律,对鄂尔多斯盆地地下水资源与开发潜力进行了评价。Abstract: The Ordos Basin is a large-scale tectonic sedimentary basin in the northwestern China.Lower Paleozoic carbonates,Upper Plaeozoic-mesozoic clastic rocks,and quarternary sediments occur on the basement of Precambrian metamorphic rocks in this area with a total thickness of 6,000 m.The aquifer system in the Ordos Basin was divided into the peripheral Cambrian-Ordovician karst system,the Cretaceous clastic rock fracture-pore aquifer system,the eastern basement rock fractured aquifer system,and the overlying quaternary consolidated sediments aquifer system.The aquifer system features and the groundwater formation and evolution were discussed,and the water resources and its exploitation potential were also assessed.
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Key words:
- groundwater system /
- groundwater potential /
- the Ordos Basin
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