Geological conditions in Xuzhou

The surface is covered by Quaternary clay about ten meters, and the lower part is directly Ordovician limestone. The geological structure of Xuzhou is simple as a whole, but there is a big fault passing through it. Therefore, from the perspective of crustal structure, Xuzhou should belong to the earthquake-prone area. The drinking water in Xuzhou is mostly groundwater, because the lower Ordovician limestone is a good aquifer, but limestone belongs to carbonate rock and can be dissolved in water, so the water quality in Xuzhou is hard.