How was Edwards aquifer formed?

The Edwards Aquifer was formed through a combination of geological processes over millions of years. It primarily developed in limestone and other carbonate rocks, which were shaped by erosion and the dissolution of soluble minerals, creating extensive underground caverns and channels. This process was influenced by the region's tectonic activity and the presence of groundwater, which gradually carved out the aquifer system. As a result, the aquifer serves as a significant source of freshwater for surrounding communities in central Texas.